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A visiter aussi: Glossary of English to French Translations Automotive / Cars & Trucks Terms :

http://www.proz.com/glossary-translations/english-to-french-translations/9   Site 27/06/2005


Ce glossaire fournit des définitions pour des termes employés pour décrire les produits, systèmes, procédures et d'autres aspects de l'industrie du matérielle de manutention. This glossary provides definitions for terms used to describe the products, systems, procedures and other aspects of the material handling industry.

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Address: A number or combination of numbers and or letters used to designate a specific storage slot.

Adjustable Forks: Forks that can be moved closer together or farther apart to fit a load.

ANSI: American National Standards Institute. Section B56.1 refers to regulations for safety and stability for powered industrial trucks.

Articulated: Crown has units with articulated wheels or drive units. The articulated or jointed mechanism provides a pivoting action for a leveling effect on the load and to maximize control and traction.

Attachments: A device other than conventional forks mounted on the fork carriage of a truck for handling particular loads. Popular types are carton or roll clamps, rotating devices, sideshifters, carpet rams, slip sheet attachments, etc.

Automatic Coupler: A hitch used on tow tractors or carts that connects a trailer to the tow tractor or to other trailers without manual assistance and allows carts to be connected together into a train of carts.

Automatic Sortation: The electronic recognition of cartons by size or code enabling these to be sorted into groups.

Automotive Battery: A classification of battery used on lift trucks where minimal usage is required.


Banding: The location of stock in bands at different rack levels depending upon its turnover and in such a way as to minimize order picker travel. The fastest movers are placed at the most convenient levels for picking (generally the first and second rack levels), with the slower moving items placed at floor and higher levels. High-level order picker trucks are normally used to facilitate selection from higher levels.

Batch Pick: A technique used to group orders to maximize order selection efficiency, by totalizing all orders for the same item and picking them all during one visit to the pick-front.

Batch Picking: Picking lists for two or more orders are combined so that they can be picked on the same run, thereby minimizing order picker travel. After selection, items are sorted at an accumulation point into individual orders.

Battery Discharge Indicator: A meter or gauge utilized on lift trucks that indicates the state-of-charge in the battery. Also referred to as Discharge Indicator or B.D.I.

Battery Lift Stacker: A manually propelled truck that uses battery power to operate the lift function. (B Model)

Bins: Open containers usually used for storing small stock keeping units.

Board: A printed circuit board that contains electronic components and circuitry to operate specific functions on a lift truck. Also referred to as PCB, P.C. Boards, or cards.

Buffer Storage: The part of a warehouse in which back up or reserve stock is stored awaiting transfer into active storage.

Bulk Storage: An area in the warehouse set aside for storage of multiple pallets of a given product.

Cantilever Racks: Have arms cantilevered off a vertical column and loads are placed either directly on the arms or on shelves supported by them. They are used extensively in steel, lumber, and furniture warehousing, having the advantage of long, unobstructed shelves with no uprights to restrict storage of long and varied loads.

Capacity: The rating given a truck indicating the amount of weight that a truck will lift to a predetermined fork height at a specified load center.


Captive Pallet: A special pallet used for a specific purpose, usually in conjunction with a gravity flow rack or stacker crane system. Also referred to as a "slave pallet."

Card: A printed circuit (PC) board containing various electronic components and circuitry that perform specific functions.

Casters: Non-powered wheels containing a swiveled base that allows them to turn freely. Used for additional stability in trucks.

Center Controlled: A truck, such as a PC (Center Controlled Walkie-Rider Pallet Truck) that has a platform located in the center between the forks and control handle or between the forks and counterweight. When riding, the operator stands on the platform and operates the truck.

Charger, Battery: A device for restoring the energy of a battery. A charger may be an integral part of some trucks or separate, housed at a charging station.

Charging Station: An area in a plant or warehouse containing the necessary equipment to maintain and recharge truck batteries.

Chassis: The entire structure of a truck including areas that house the main electrical components, power and drive units.

Clamp: An attachment which grasps or holds the load, such as a carton clamp or roll clamp.


Coast Control: A mechanical device located at the base of the control arm on such trucks as the TW, TWR, PC, PE, that when positioned in the coast position allows the truck to coast to the next picking slot.

Cold Conditioning: A means of preparing a lift truck to operate in colder than normal environments such as freezers. Some conditioning may include low temperature hydraulic oil and lubrication, special coating or plating of components, heaters, etc.

Collapsed Height: The overall vertical dimension from the floor to the top of the truck when the forks of the truck are in their fully lowered position.

Conductors: The physical hook-up that allows the transfer of an element or substance between specific points, such as hydraulic hoses, electrical wiring, or circuits on a P.C. board.

Control Handle: The mechanism that contains the wiring, controls and related hardware for controlling the various functions of a truck.

Controlled Plugging: When direction of travel is changed by the operator, the drive motor decelerates or slows the truck to a stop then accelerates the truck in the opposite direction.

Control Valves: A valve that controls the direction of flow of the hydraulic fluid.

Conveyor: A means of transporting materials to specific areas by a series of automated belts or rollers.

Counterbalanced: To oppose with weight. A truck that utilizes weight in the chassis to counterbalance the load eliminating the need for outriggers. Some of Crown's counterbalanced units are WB, RC, and SC.


CPU: Abbreviation for Central Processing Unit. The CPU is a microprocessor, ãthe brainsä of a computerized system. It performs the calculations necessary to provide various information.

Creep Speed: The slowest speed a truck, with SCR speed control, will travel when the directional contactors are just pulled in.

Cube: The true storage capacity of a building: L x W x H.

Cube Utilization: The ratio of occupied cubic space to total cubic space available usually expressed as a percentage.

Current Limit: A circuit in the SCR control that maintains a set level to prevent current peaks from damaging the motors or controls.

Cushion Chamber: The area of a cylinder where the hydraulic fluid is metered to provide a smooth stop when the cylinder reaches the end of its stroke.

Cylinder, Double-Acting: A hydraulic cylinder that has power strokes in both directions. These type of cylinders are used on trucks with steer cylinders, sideshifters, clamp attachments, etc.

Cylinder, Single-Acting: A hydraulic cylinder that has a power stroke in one direction only. The return stroke is dependent on gravity along with the weight being imposed by the device it is operating. Main lifting cylinders are normally single-acting.

Data Entry: As merchandise is received or shipped, it is entered into the computer memory through a terminal to update computerized records.


Deadman Brake (Automatic): A brake system utilized on trucks that apply the brake automatically when the operator leaves the operator compartment or lets go of the handle.

Dedicated Aisles: An aisle in a warehouse serving only one function. This aisle can be for either order selection or storage of product.

Discharge Meter: A meter that indicates the state-of-charge in a truck's battery.

Disk: A flat rotating device for the magnetic storage of information, to be accessed by a computer.

Dockboard: A device that acts as a bridge between the gap of a dock and the bed of vehicles.

Drive-In Racks: Have shelves running perpendicular to the storage aisle, each consisting of a pair of rails on which pallets may be placed two or more deep. These rails are fastened to upright columns and run the entire depth of the rack. The rack is laterally supported at the rear by cross bracing. Fork trucks may be driven into the racks, between the rails to place pallets in the racks. This type of rack is normally utilized for repetitive products to take advantage of cubic space available for storage when the unit loads do not lend themselves to block stacking.

Dock Seal: A sealing device around a dock opening that not only seals out inclement weather or unwanted ambient temperatures, but can also act as a cushion to absorb force from a backing truck.


Double-Deep Racks: They are usually two rows of selective racks, one placed behind the other on which pallets may be placed two deep by a double reach truck.

Drawbar Pull: The pulling or towing force, in pounds, at the hitch or coupler of a tow tractor such as the TW, TWR, or TR.

Drive Through Racks: Similar to drive-in racks in that they allow the fork truck and pallet to enter the rack structure and place the pallet on rails. However, the drive through rack is not obstructed at the end by bracing, but gets it's rigidity from it's own overhead bracing or by tying into the overhead structure. FIFO movement is possible with drive through racks, whereas LIFO movement must usually be acceptable with drive-in racks.

Drive Tire: The tire located on the drive unit that propels the vehicle, usually made of solid rubber or polyurethane.

Driver: Transistorized switch typically used with an SCR system to energize the coils of contactors.

Dual Command (Combined Cycle): A single run on which a fork truck or S/R machine places a load into storage and also retrieves a load from storage.

Dual Load Wheels: Two load wheels located side-by-side on one shaft or axle.

Dynamic Brake: An electrical braking system that requires manually actuating a switch to activate the brakes. This system was utilized on the discontinued Series W Intermediate truck prior to the mechanical brake system.


Eighty/Twenty Rule: The theory that a large proportion of warehouse activity will be generated by a small proportion of the SKU. Twenty percent of items give eighty percent of activity. The rule is used in many aspects of business.

Electrolyte: In lead acid industrial truck batteries the electrolyte is a mixture of sulfuric acid and water.

Emergency Power Disconnect: A means that allows the operator to quickly cut off all battery power to the truck.

End Controlled: A truck, such as Crown's PE, RC, RR that has a platform located on the end opposite the forks that an operator can ride on to control the truck.

Extended Height: The measurement from the floor to the top most part of the truck when the mast and forks or platform are in the fully extended position.

Extended Tip: An elongated style of fork tip utilized primarily on pallet trucks that have the load wheels positioned closer to the chassis. This permits the wheels to drop in the first opening of the second pallet when handling two pallets. It maintains a shorter turning radius when compared to standard tip, two pallet handling forks.

Facings: A storage location that can be reached without moving another storage slot first.

Family Grouping: A method of storing the same, or similar products in a common area. FIFO/LIFO - First in, first out/Last in, first out.

Filters: Devices that remove unwanted noise or interference in electrical circuits or contaminants in hydraulic oil.

Fixed Forks: Forks that are welded to the fork carriage and whose spread cannot be changed or adjusted.

Fixed Platform: A platform, in place of forks, that is welded to the carriage.



Fixed Slot: A storage slot reserved for a specific SKU.

Float: The amount of time available before picking slots must be replenished from reserve slots or re-supply from vendors.

Floating Slot: A storage slot that becomes available for any SKU as soon as it is empty.

Floor Slot: A storage slot at floor level.

Floor Space Utilization: The ratio of occupied floor space to total floor space available, usually expressed as a percentage.

Floor Stacking: The stacking of unit loads directly on top of each other with the floor as a base.

Flow Racks: (Gravity storage, live storage) non-powered conveyor lanes pitched at a slight incline so that two or more loads can be stored in one lane with gravity providing the means of movement within that lane.

Flyback Current: The current generated by the rotation of a motor when battery power is not being applied.

Fork Carriage: A support structure for forks or attachments, roller mounted, traveling vertically within the mast.

Fork Extensions: An accessory that when attached to the forks, increases the fork length and load carrying length.


Fork Face: The front surface of the forks.

Fork Heel: The bottom surface located at the bend in the fork.

Fork Length: The total length of the forks measured from the fork face to the fork tip.

Forks: Horizontal prongs for picking-up and supporting loads. The forks can be either fixed or adjustable with formed or forged forks.

Fork Spread: The dimension from the outside of one fork to the outside of the other fork.

Fork Tip: The section at the end of a fork. Some trucks, such as pallet trucks, may have extended or standard tips. A forged fork can have a chiseled or tapered point.

Fork Width: The dimension or width of a fork.

Free Lift: The height the forks reach before the overall collapsed height of the truck begins to increase.

Full Free Lift: A truck where the fork carriage travels to the top of the inner mast before the inner mast begins to rise has full free lift.



Gradeability: The maximum percent of slope the truck can negotiate with a capacity load.

Grade Clearance: The maximum grade that a truck will clear empty and loaded without contact between the floor or dock board and the truck.


Hand Truck: A truck that is not powered but manually operated. Crown's PTH is a hand truck.

Hash Filters: A resistor capacitor combination used to filter out electrical noise that may interfere with the operation of solid state components. Crown uses a hash filter primarily in horn circuits.

Head Length: The distance or length from the fork face to the rear of the truck.

Heavy Duty: A truck that is capable of working continuous shift operation at maximum capacity.

Hertz: An electrical term meaning cycles per second, abbreviation is Hz.

Hitches: The couplers that secure carts or trailers to the back of two tractors. Hitches available on Crown Tow Tractors are Automatic, Pintle, Pin & Eye, and Clevis.

Hose Reel: A hose reel is a means of storing excess hydraulic hose when not in use. It is a spring loaded device that automatically retracts or reels in and feeds out the hose as required. A hose reel is used to supply hydraulic oil pressure to operate attachments.

Hydrometer: An instrument for measuring the specific gravity of the electrolyte in a battery. A fully charged lead acid battery has a specific gravity of 1.265 to 1.285. A discharged battery will drop to 1.130.


Inch Pound Rating: A rating given a truck to determine what capacity load a truck can lift at extended load centers.

Industrial Battery: A classification of battery used on lift trucks capable of handling extended usage and recharging several times over it's life.

Inner Mast: Inner mast pertains to the 2nd or 3rd stage mast on a telescopic (TL, TF, TT) lift truck.

Inside Straddle Dimension (I.D.): The inside distance between the outriggers. Crown recommends that this dimension be 2" wider than the width of the load.

Intermediate Duty: A truck designed to lift less than capacity loads during a full work cycle or lift capacity loads during a limited or intermittent cycle.

Inventory Control: In a complete inventory management system, it includes stock levels, stock locations, reorder points, balance-on-hand, item physical description, rotation, etc.

ITA: Industrial Truck Association is an organization that includes representatives from most lift truck manufacturers.



Lanyard: The rope or strap secured on one end to a position on the truck, such as the overhead guard, and fastened on the other end to a safety belt. This arrangement, utilized by the operator, provides additional safety on a stockpicker should the operator accidentally step off the platform.

Let Down: Lowering a unitized or partial load down to where it can be orderpicked.

Lift Chains: A flexible series of connecting links that transmit the lift force from the hydraulic cylinder to the fork carriage and forks.

Lift Height: The maximum height a truck can lift. Lift height is measured from the floor to the top of the forks.

Lift Interrupt: Measures the state-of-charge of the battery and when the charge falls below a predetermined level, the lift interrupt locks out the lift contacts to prevent lift. Batteries can be damaged by continually discharging to very low levels.


Lift Speed: The speed generally in feet per minute (fpm) when raising the forks empty and/or loaded.

Limited Free Lift: The amount the forks raise before the overall lowered height increases. (TL)

Limit Switch: A switch that limits the lift height or maximum travel speed when the forks reach a predetermined height.

Line: A line is a single transaction. It represents a line on an invoice, or one stop at a bin front.

Line Driver: A radio frequency signal generator. The line driver generates a radio signal through the guidepath or wire in the floor for trucks with wire guidance.

Line Item: (A term used synonymously with SKU.) A unique item of inventory-similar definition to "part number".

Load Backrest: A device extending vertically from the fork carriage which helps to stabilize the pallet load.

Load Center: One-half the length of a load measured vertically (V.C.G.) or horizontally(H.C.G.).

Load Wheels: The wheels located on the load end of a truck, such as in the outriggers or the forks of a pallet truck. Load wheels can be single, dual or tandem and typically made of polyurethane, nylon or steel.



Man-Up: A concept where the operator is located in a compartment or platform that raises and lowers with the forks, such as used on the Turret Sideloader or Stockpicker.

Mast: The vertical support member that provides guideways for the vertical movement of the carriage and forks.

Master Manual: Identifies a Service/Parts Manual that has all the published information that pertains to a truck(s) since the beginning of the truck(s) production.

Microprocessor: An integrated circuit (IC) that contains the control and processing elements of a micro-computer.


Nameplate: A plate attached to each truck that contains pertinent information concerning the truck, such as model and serial number, weight, capacity, etc.

Narrow-Aisle: Aisles that are narrower than the 12 feet wide aisle necessary to properly maneuver and operate a conventional sit-down rider counterbalanced truck. A narrow aisle is normally considered 7 to 9 feet wide.

Non-Telescopic: A truck with a single mast.


Operator Manual: A manual explaining controls, operation, ratings, planned maintenance, preliminary safety checks and safe operating procedures included with each new Crown truck.

Order Batch: An accumulation of orders released for order picking.

Orderpicker: The person performing the physical selection of goods to fill orders.

Orderpicking: Physical selection of goods to fill orders.

OPD: (Order Picking Document) This is another term for a pick list.

OSHA: Occupational Safety and Health Administration. The governing body that monitors and enforces standards relating to industrial safety.

Outriggers: A stabilizing structural member extending from the lift structure. Sometimes called base legs or straddle legs.

Outs: (or Outages) A term used to describe the items ordered by customers which are not available in the warehouse.

Overall Collapsed Height: The maximum height of the vehicle from the ground to the extreme top point of the truck with the fork carriage in the fully lowered position.

Overall Lowered Height: Same as Overall Collapsed Height.

Overhead Guard: A framework fitted to a truck located above the head of the operator, driver's overhead guard (D.O.G.).


P/D Station: Pick up/Discharge Station, Input/Output Station. The location where inbound material is placed for pick up and storage by a sideloader, turret truck, or S/R machine, and outboard material is placed for delivery to production, shipping, or wherever required.

Pallet Truck: A truck equipped with forks which go between the top and bottom boards of a double-faced pallet. The wheels lower into spaces between the bottom boards to raise the pallet off the floor (GPW, PW, PE, PC and PR).

Palletization: The building of a unit load on a pallet to facilitate storing and handling merchandise.

Pallet Overhang: The condition created when the overall width and/or depth of the material on the pallet is greater than the width and/or depth of the pallet.

Pantograph: A scissor-like extension used on WR, RR and RD trucks. Sometimes call a reach mechanism.

P.C.B.: Abbreviation for Printed Circuit Board.

P.C. Board: Printed Circuit Board containing various electronic components and circuitry. Also referred to as card or board.

Pick Aisles: A pick aisle is any aisle in which an order selector can pick orders.

Pick Slot: A location in the warehouse where merchandise is available for order selection. (Same as: Picking Face)


Picking Time: The amount of time required by the order picker to select the merchandise, place it into his picking container and mark his picking list.

Picking Face: The facing from which merchandise is picked to fill orders. (Same as: Pick Slot)

Picking Rate: This is usually expressed in terms of number of cases or number of lines picked by one order selector per hour.

Pictorial Diagram: A layout of a hydraulic or electrical system graphically depicting components and interconnecting lines or leads.

Piece: Is a unit that must be physically picked. If a box of 10,000 bolts is to be picked, that is only one piece, but if the box is to be opened and two bolts picked from it, then two pieces are to be picked.

Pivot: Rotation along a horizontal plane. The TS has a pivoting or turret mechanism that allows the operator to pivot the forks in a 180 degree arc.

Platen: (See Push/Pull) A flat piece of metal used in place of forks to retrieve and support loads being transferred on slip sheets. Crown utilizes the platen concept on Series SSR trucks.

Platform, Operator: The area of a rider truck reserved for the operator.

Plugging: The sudden reversing of the direction of a truck by reversing the direction of the drive motor(s).


PMT: Pulse Monitor Trip. This is a feature built into a SCR control. It checks the main SCR by monitoring the pulses to the motor when the motor is in the SCR range. If no pulse is present when in the SCR range, the PMT trips interrupting power to the motor.

Postural Relief: The act of changing postures to reduce stress.

Power Unit: The section of a truck that houses the contactor panels, SCR controls, hydraulic components, drive unit, and related parts.

Proportional Plugging: The operator can control the rate of deceleration with the acceleration control.

Pulse: A brief and abrupt change in voltage and current produced by turning a SCR on and off in an SCR System.

Pump: A device that converts mechanical force and motion into hydraulic fluid power. Pump Motor - An electric motor used in combination with a pump to supply oil pressure to lift forks, power an attachment, etc.

Push/Pull: An attachment which pushes or pulls a load from the platen or forks. The Series SSR uses such an attachment to load or unload slip sheets.



Quick Disconnect: A device or method that allows an operator to quickly disconnect or cut off the battery power on a truck.



Rack: A framework on which items are stored. Some types of racks are conventional, drive-in, cantilever, double-deep, pallet, etc.

Rail Guidance: A method of guiding a truck in the aisle by attaching side rollers to the truck that engage rails secured to the floor in the aisles.

Reach Truck: A truck equipped with a pantograph type reach mechanism that allows the forks to extend out past the supporting outriggers to pick-up and deposit loads (RR).

Replenishment: Is the function of transferring stock from a reserve storage area, or directly from shipping to a primary picking location which has become empty.

Reservoir: A container used for the storage of fluid in a hydraulic power system.

Resistor: A device that impedes the flow, provides resistance to electrical current in a circuit.

Resistor Control: A type of speed control that utilizes resistors to reduce the voltage to the motor. The lower the voltage, the lower the speed. Also referred to as contactor control.

Rider Truck: A truck designed to be controlled by an operator that rides on it. A truck can be either a sit-down or stand-up rider.

Right Angle Stacking: The ability to turn a truck 90 degrees (right angle) in an aisle to deposit or retrieve a load.

Rolling Load Capacity: The maximum capacity in pounds that a tow tractor is designed to transport on a level floor.

Rotator: An attachment that uses a revolving action when handling a load. A drum rotator picks up a load and rotates it.


Schematic: A systematic drawing of an electrical/hydraulic circuit with components designated by electrical/electronic symbols or hydraulic symbols.

SCR: Silicon Controlled Rectifier. An electronic switch that can be turned on and off very quickly (up to 300 times a second) that allows current to pass through in one direction.

SCR Control: A speed control using solid state components. These controls offer smoother operation and reduced battery drain in comparison to resistor controlled units. SKU - Stock Keeping Unit represents one unique inventory item. Example: one style of shirt, in six colors and five collar sizes, would be 30 different SKU's.

Seasonality: Storage and shipment of material from a warehouse caused by seasonal surges in customer demands.

Selective Racks: Commonly referred to as pallet racks, shelves running parallel to the aisle each consisting of a pair of horizontal beams on which pallets may be placed one deep. These beams are connected to the front and rear columns of a vertical truss. Every pallet face is exposed to the aisle providing 100% selectivity.

Selectivity: Ease of accessibility of merchandise. The number of "facings"or immediately accessible storage slots. Selectivity is sometimes expressed as the percentage of the total storage slots which are immediately accessible.

Semi-lndustrial Battery: A battery classification between automotive and industrial grade with industrial being the strongest.

Shrinkage: An inventory adjustment because of pilferage, over or under shipment, or receiving errors.


Side Guide Rollers: Rollers attached to the side of a truck that contact rails anchored in the floor of aisles for the purpose of guiding a truck down the aisle.

Sideloader: A truck that is able to work in very narrow aisles (6 feet wide). This truck reaches to the side to load and unload without changing the direction of travel.

Sideshift: An attachment which can move the forks horizontally to the left or right to aid in retrieving or placing a load.

Skid Adapter: A framework that attaches to a pallet truck to provide an elevated surface when handling skids.

Slip Sheet: A thin, flat sheet made of fiberboard or plastic used in lieu of pallets or skids that requires a special attachment for handling.

Slots: A location in the warehouse with a specific address.

Software: Tapes, discs, or other data mediums containing programs, routines, codes, etc. for use with computers.

Solenoid: An electromagnetic device consisting of a coil with movable core. Energizing the coil causes the core to move and perform some type of mechanical action.


Solid State: Any device that can control current flow without requiring a movement of parts, a heating of filaments, or a vacuum gap. Some solid state devices used in Crown equipment are diodes, rectifiers, etc.

Stacker Crane: A crane type system with a suspended fork lift mast capable of handling palletized loads or tote boxes. This system is usually built-in.

Staging Areas: Areas where goods are temporarily stored awaiting processing by the next operation.

Standard Tip: A type of fork tip utilized on a pallet truck that could contain single, dual, or tandem load wheels and is long enough to handle the length of one or more pallets.

Steering Arm: The mechanism on such trucks as PE, WR, etc. that includes the control pod, control handle (column between pod and power unit), and related parts that the operator uses to steer and operate the truck.

Stockpicker: A lift truck with all controls for raise/lower, travel, etc. mounted on an operator's platform that raises and lowers with the forks. Also referred to as an Orderpicker, Stock Selector, etc.

Storage Aisle: The aisle from which one stores material or has access to material stored.

Straddle: Indicates the load is positioned between a truck's outriggers or that the outriggers straddle the load.

Straddle Stacker: A lift truck that has outriggers (straddles) that go on either side of a load.

System: A planned method in a controlled environment with enforced disciplines.


Tandem Load Wheels: Wheels located on outriggers or the forks of pallet trucks.

Telescopic Mast: The second or inner mast works on the same principle as a telescope. Used when a high lift height is required with a low collapsed height.

Terminal:  (a) A terminal is any device into which an operator enters or receives information from a computer. Commonly, a television screen equipped with a keyboard.  (b) A terminal can also be the Distribution Center itself. In the freight or trucking industry, for instance, shipments are brought into a Terminal to be consolidated for onward shipment or broken down into local delivery consignments.


T-Handle: An extra wide T-shaped steering mechanism utilized on Crown's PC and TR models which contains the controls for travel, raise, lower, horn, and brakes. The wide handle allows the operator to walk along the side of the truck and move the truck forward without getting back on the truck.

Thermal Protector: A device that is sensitive to temperature and reacts to abnormal or excessive temperatures to protect critical components. Thermal protectors are used on SCR controls.

Throughput: The amount of merchandise shipped through a system or warehouse in a given time. This is referred to in cases, lines, or tons of product.

Tilt: An action of changing the angle of the forks or mast on a truck for retrieving or depositing loads.

Time Delay Relay: A remote controlled electrical switch that, when energized, a lapse of time occurs before its contacts close or open.

Tote Box: An open topped rigid box for holding material or stock.

Tow Line: An automated chain with spurs that runs in a trough located in the floor. Its purpose is for the controlled movement of carts or trailers used in material handling. When a cart reaches the desired destination, the spur automatically detaches the cart from the automated line.

Tow Tractor: A power propelled truck used for pulling several carts or trailers. A tow tractor has no lifting capabilities. A tow tractor is rated by rolling load capacity and draw bar pull. Crown has the TW, TR, and TWR tow tractors.


Trail Wheels: The rear non-powered wheels on a tow tractor. Some people also refer to the load wheels as trail wheels.

Transistor Control: A speed control for smooth operation and reduced battery drain. Traverse - The horizontal or sideways movement of the auxiliary mast and forks across the carriage of a Turret Sideloader.

Triple Stage: A lift truck that is composed of three masts that telescope to achieve higher lift heights with lower collapsed heights. TT designates a triple telescopic mast on a Crown lift truck.

Turning Radius: The radius of a circle created by the outmost projection of a lift truck when the operator has the steering mechanism in the tightest turning position.

Turnover: The number of times the total inventory value is achieved in sales volume in a year. (Turns)

Turret: The revolving mechanism on a Turret Sideloader that allows the operator to pivot the

Turret: The revolving mechanism on a Turret Sideloader that allows the operator to pivot the forks horizontally in a 180 degree arc.

Twist Grip: The handles that control speed and direction on Crown trucks.


Underwriters’ Laboratories: Also referred to as UL. An independent testing organization with nationally recognized standards for fire and electrical safety approval on manufactured equipment.

Unit Load: An assembly of cartons or cases into a convenient multiple for movement as a composite unit.

Unit Load Size: The overall width, depth, and height of the unit load including the pallet or container, if used.

Unit Load Weight: The overall weight of the unit load including pallet or container


Valves: A hydraulic device that controls fluid flow direction, pressure, or flow rate.

Velocity Fuse: An internal safety device located in the bottom of some main lift cylinders that monitors the flow of hydraulic fluid leaving the cylinder. An abnormal increase in flow, due to a line break, will activate the fuse, closing the cylinder port and locking the cylinder in the position it is at until repairs are made.

Velocity Slotting: Storage of items in descending order of their popularity by number of order-lines received for them.

Viscosity: The property of fluids that determine their resistance to flow. Hydraulic fluids come in different viscosities for different ambient applications.

Voltage: The measurement of the force
which causes electrical current to flow in a conductor.


Walkie Rider: A power propelled, power lift truck controlled by an operator either walking along the side or riding.

Walkie Truck: A power propelled, power lift truck which an operator walks with controlling direction and speed, raise and lower by a control handle.

Wire Guidance: An electronic device (line driver) generates a signal and applies it to a guidepath (wire in-laid in floor). The signal is picked up by sensors mounted on the truck and relayed to steering mechanisms for the purpose of automatic guidance.

Zone Picking: A method used to divide the warehouse into order selection areas. An operator is responsible for orders selected from that area. This method of order selection requires merging of all parts of the order prior to shipment.




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