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Document Title |
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4593791 |
Automatic sequencing circuit for lift cylinders
The carriage lift and mast lift cylinders are sequentially extended and retracted in the reverse order of pressure required to actuate them by a sequencing valve to insure proper sequential...
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4552250 |
Lift truck
A lift truck having a frame and a two-stage telescopic mast in which an outer, movable mast is mounted to telescope over an inner mast which is fixed to the frame, each mast having a substantially...
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4544323 |
Quick coupling and lift device
The invention concerns improvements in universal vertical lift system couplings and attachments therefor; in vertical lift systems, improvements in wide engagement and narrow engagement universal...
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4538954 |
Stacker crane having narrow mast structure
The invention relates to a stacker crane comprising an upright rigid mast rotatably connected at its upper end to a horizontally movable trolley, an intermediate mast that is vertically movable...
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4496031 |
Material handling apparatus
A lift truck mast arrangement minimizes stresses occurring in mast members using rearward chain anchor placement to apply a rearward counterbalancing moment to the mast so as to create a bending...
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4484663 |
Portable personnel platform lift
A portable personnel platform lift is provided, having a base mast or section and a plurality of extendible, nesting masts or sections with a personnel platform on the upper section. The extendible...
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4476960 |
Adjustable chain anchor for lift trucks
The lift system for the mast assembly of a lift truck normally includes at least one hydraulic cylinder and a pair of lift chains for selectively raising and lowering a movable assembly (upright or...
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4467893 |
Folding fork lift with a multiple telescoping top lift attachment
An attachment for a lift truck includes a base unit attachable to a vertically movable carriage of the lift truck, a lower stage slidably engaged on the base unit, at least one upper stage slidably...
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4458785 |
Lift
A multistage portable lift has an arm projecting rearwardly from one of the movable lift stages and a reeving system including a cable transferring a downward counterbalancing force to the arm from...
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4449614 |
Lift device
A lift device for a load transporter such as a fork-lift vehicle, comprises a load carrier for holding a load, a pair of chains, one end of each of which is connected to the load carrier, a pair of...
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4442922 |
Adjustable slider bearing assembly
The invention provides several embodiments of support assemblies (26,30,32) suitable for use in a lift mast (10). Each support assembly (26,30,32) has two slider bearings (36) for symetrically...
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4441585 |
Lift mast assembly
This invention relates to a lift mast assembly (10) preferably for a vehicle (34) which eliminates the problems of reduced visibility, reduced load carrying capacity for a given vehicle size and...
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4431083 |
Apparatus for lifting a member using parallelogram mounted links
Conventional lifting mechanisms for positioning materials with respect to a frame such as lift trucks, cranes, and front end loaders frequently have undesirable components of motion. For example,...
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4413708 |
Industrial truck with pivotal front frames
Industrial trucks commonly include a unitary frame having a roller mast and carriage assembly mounted forwardly thereon. The ability of such trucks to traverse narrow aisles is limited and their...
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4393959 |
Hydraulic stabilizer for axle on mast lift vehicle
A hydraulic axle stabilizer for a pivotal axle on a fork lift truck operating responsive to extension of a mast lift to provide stability of the fork lift truck for higher lifts on the mast.
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4392554 |
Lift mast assembly
This invention relates to an improved visibility free lift mast (10) which eliminates the problems of reduced lift height, upright strength and excessive guide bearing loading. The lift mast...
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4369861 |
Multiple section mast with a pair of lift jacks behind the primary section uprights
A pair of three-element, constant speed lift jacks are positioned at the rear of the stationary mast section uprights above the tilt jack connections with the same uprights, thus permitting the...
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4354579 |
Apparatus for guiding lift truck mast segments
This is a unique mast roller as is used by lift trucks, and the like. It is characterized by a number of roller assemblies which are both removable and adjustable to compensate for variations in...
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4307792 |
Forklift roller mast lock
A lock holds together two masts of a multi-stage forklift truck. A spring-loaded bolt carried by the inner mast is forced into an opening in the outer mast when the carriage is lowered to a...
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RE30815 |
Lift truck mast
A lift truck mast having extensible uprights received one within the other. Each upright includes a pair of rail members each of which has a web and flanges such that the members are I-shaped in...
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4280205 |
Ultrasonic fork height measuring apparatus
The height to which the forks of a lift truck are raised is measured by an ultrasonic height measuring arrangement including a downward facing transmitting transducer, positioned on the truck...
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4240526 |
Safety device for forklifts and the like
A safety device for use with a forklift having an elevatable carriage, a vertical guide for the carriage, and a horizontal cross bar mounted on the guide, the device having a pair of members spaced...
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4231450 |
Overload warning system
An overload warning system for an industrial lift truck including a fluid supported rear suspension, pressure responsive switches communicating with the fluid suspension, and a mast height sensor....
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4219302 |
Cylinder arrangement for raising a carriage and uprights of a mast
A lift truck having a mast assembly for lifting a load. The assembly includes a first fixed pair of spaced-apart uprights and a second movable pair of spaced-apart uprights with the second pair...
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4207967 |
Combined lifting mechanism and overhead guard for lift vehicles
A lift mechanism for lift vehicles of a type including an operator's station and a carriage arranged for vertical travel upon a mast assembly. In one embodiment, the lift mechanism includes a lever...
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4164270 |
Mast support construction for fork lift truck
A bracket member which connects an axle shaft housing to the chassis of a fork lift truck and supports a tiltable mast, is formed with a circular recess into which fastening bolts and flanges of...
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4155428 |
Deflection constraint device for telescopic uprights
A system for reducing the lateral bending moments and deflection in side loading telescopic uprights, such as for lift trucks. Hydraulic actuated restraint device is mounted between each adjacent...
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4126209 |
Mast mounting
A lift truck having a frame which includes parallel beams having forward ends that terminate in bifurcated ends forming upper and lower portions with U-shaped openings therebetween adapted to...
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4126208 |
Adjustable lock for mast hanger
An adjustable lock arrangement for a lift truck mast hanger pin to retain it within an upwardly opening slot, such as formed by a J-hook member provided on the front of a lift truck frame,...
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4102463 |
Transporter for slab casting tables
A mobile transporter for use in transporting equipment during the construction of a building, said transport comprising a lower section supported on ground engaging means for movement thereon, a...
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4084715 |
Lift truck with means to pivot mast and the fork carriage thereon
A fork carriage attitude adjusting arrangement includes a mounting tower secured to and extending upwardly from the forward end of a longitudinally extending frame. A lever arrangement is pivotally...
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4069932 |
Fork lift truck
A fork lift truck includes an operator's protective structure carried on a longitudinally extending frame. The protective structure has a channel member which also forms part of a lift mast...
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4060151 |
Adjustable arbor wheel mounting arrangement
An adjustable arbor wheel mounting arrangement has a support frame having a mounting surface and an arbor having an axis and an end mounting surface. A wheel means is mounted on the arbor and...
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4059172 |
Lift truck mast positioning mechanism
An upwardly extending mast is disposed adjacent a forward end of a lift truck main frame which has a mounting tower secured to and extending upwardly therefrom. A pair of longitudinally extending...
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4054185 |
Mast control mechanism
An upwardly extending mast is disposed adjacent the forward end of a vehicle main frame of a lift truck. A mounting plate device extends upwardly from the forward end of the main frame with the...
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4034855 |
Suspended guide rollers
The invention is concerned with an improvement in a system for guiding a pair of generally vertical elements to travel linearly relative to one another, which system includes contact means...
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4026432 |
Lift-vehicle assembly
A lift assembly for an industrial vehicle, e.g. a fork-lift truck, comprises a pair of transversely spaced uprights mounted upon a common tiltable frame formed with cylinders for plunger-type...
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4024973 |
Forklift truck with selectively connectable mast
Disclosed herein is a forklift truck including a wheel-supported frame, a mast, pins for selectively mounting the mast to the ground supported frame in either a lower position or an upper position,...
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3999267 |
Method for assembling a lift truck mast
A method for assembling a lift truck mast having a slider element positioned within a channel element.
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3961689 |
Spacer and noise suppressor cushions for lift truck mast units
A plurality of spacer and noise suppressor cushions employed in a lift truck mast unit between facing beam flanges in relativey movable upright units, the cushions being formed from resilient...
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3951471 |
Recirculating ball bearing assembly for fork lift mast units
An anti-friction, recirculating ball bearing assembly of minimum thickness particularly contemplated for use between the structural beams of relatively movable upright sections in a fork lift mast...
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3937346 |
Movable stacking device
A moveable stacking device having a mobile substructure which carries a tower with a fixed outer frame and an inner frame guided by the outer frame for vertical movement relative thereto. An...
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3934681 |
Overhead service unit
An overhead service unit provided with a base having a fixed frame projecting upwardly therefrom. A series of movable frames are slidably interconnected to each other and to said fixed frame with a...
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3876039 |
Mechanical lift truck
A manually operable material handling and lifting vehicle capable of lifting loads, supporting them during transport and raising them to an elevated position. The vehicle comprises a wheeled base...
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3871494 |
LIFT TRUCK MAST
A lift truck mast having extensible uprights received one within the other. Each upright includes a pair of rail members each of which has a web and flanges such that the members are I-shaped in...
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3854699 |
MEANS FOR PROTECTING THE ROD OF A HYDRAULIC LIFT JACK FROM DAMAGE BY THE LIFT CHAIN
A protective band of flexible material is connected at its opposite ends to the lift chain of a lift truck and passes over the upper end of the rod of the lift jack beneath the chain roller. The...
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3851732 |
MAST AND CARRIAGE FOR A LIFT TRUCK
A lift truck incorporates a pair of fixed, laterally spaced apart upright channel members the edge flanges of which are directed inwardly. A pair of interconnected elongated members are associated...
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3841442 |
LIFT TRUCK UPRIGHT
A lift truck upright having outer, intermediate and inner telescoped mast sections with a load carriage elevatable in the inner mast section, and lift cylinders and lifting chains mounted in tandem...
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3830342 |
MATERIAL HANDLING VEHICLES
Lateral bending moments which lift truck mast sections must oppose when loads are shifted laterally are reduced by disclosed chain-sprocket arrangements wherein a load carriage or other upper mast...
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3814272 |
BALANCED FORK LIFT TRUCK
A balanced fork lift truck comprising a motorized steerable chassis having upright elevator masts tiltably mounted on opposite ends thereof, means for effecting inward tilting of the respective...
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