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8739935 Portable wheel chair lift  
A portable wheel chair lift device includes a lift car, a support base, and a lifting mechanism coupled thereto to selectively raise or lower the lift car while allowing the floor of the lift car...
8316994 Battery powered vertical lift assembly  
The invention is a battery powered vertical lift assembly adapted for vertically raising and lowering a load along a substantially vertical structure. The vertical lift assembly comprises a...
8302738 Power train handler  
A power train handler having a first inverted T-shaped stand and a second inverted T-shaped stand the height of each of which is preferably independently adjustable. A T-shaped support is slidably...
8078368 Lift truck safety system  
A method of operating a lift truck, the method including the steps of actuating an override to move the lift truck from a safety configuration into a working configuration, positioning a load onto...
7996992 Methods for mounting one or more ropes on a rope pulley  
A method for mounting one or more ropes on a rope pulley includes fitting a first end of the one or more ropes into one or more corresponding rope grooves of the rope pulley, attaching a rope...
7926618 Portable wheel chair lift  
A portable wheel chair lift device includes a lift car, a support base, and a lifting mechanism coupled thereto to selectively raise or lower the lift car while allowing the floor of the lift car...
7523587 Portable observation tower  
A portable structure from which hunters and wildlife observers can command elevated views of wildlife habitat. Commonly called a blind, it may also be constructed as a permanent or semi-permanent...
7491026 Lift gate assembly  
A lift gate assembly including a pair of spaced-apart columns, a pair of support members telescopingly received within the pair of spaced apart columns, a platform having a first section operably...
7395900 Portable wheelchair lift  
Systems and methods for lifting a wheelchair in non-residential indoor facilities. Guide rails extend from a wheeled-base and include a bearing and transmission system for raising and lowering a...
7281736 Pothole protection mechanism  
A pothole protection mechanism provides additional support for the vehicle in the event a wheel is driven into a hole while the platform is elevated. The mechanism includes an extendible and...
7275908 Swivel ram roller  
A roller mechanism for transporting loads over a surface, the roller mechanism including a body, at least one roller assembly that permits the body to move in at least one translational direction,...
7090457 Portable lift for installing and uninstalling computer-related equipment into a storage cabinet  
A portable lift (10) for installing and uninstalling computer-related equipment (12) into a storage cabinet (14) broadly comprises a frame (16) operable to be removably secured to the storage...
6523647 Elevating platform assembly  
An elevating platform assembly includes a generally vertical mast having a generally vertical rack mounted thereon. A first trolley is coupled to the mast and is moveable therealong. A drive...
6431319 Height-adjustable equipment cart with detachable table  
A height-adjustable cart is provided and includes an undercarriage having a wheeled frame, a double scissor-type lift mechanism and a support frame which is height-adjustable relative to the...
6308802 Mobile elevator assembly  
A mobile elevator assembly which may be used for gaining access to balconies and the like for purposes of moving furniture further comprises a trailer base upon which all components are mounted, a...
6089354 Forklift  
A forklift with four wheels mounted on a chassis and a gantry which carries the forks and can be folded down longitudinally for transporting the forklift. The chassis of the forklift consists of...
5890737 Pothole protection mechanism for a lifting device  
A mechanism for preventing tipping of a lifting device having a main frame supported by a plurality of ground engaging support elements and a lifting element raisable and lowerable with respect to...
5848668 Portable lifting system for easy movement of moderately heavy items  
A method, device and system are provided that is a portable lifting system for easy movement of moderately heavy items, including a base member, a vertical support member connected to the base...
5584363 Locking system for stabilizers  
A swing-up stabilizer for a portable lift has a bracing strut with a pivoted locking mechanism at its upper end including a locking plate on the strut which is spring biased into a tilted locking...
5429210 Adjustable height wagon  
An adjustable height wagon capable of being manipulated between an orientation allowing maximum lift and an orientation allowing maximum height. The provision of a lift mechanism below an...
5425433 Elevating apparatus  
An elevating apparatus comprises a rack (1) supporting the apparatus, and an elevating platform (7) adjustable in height and suitably guided by at least one mast (8) or column. The mast (8) may be...
5397209 Workpiece-transport trolley  
A device for transporting workpieces to be machined and worked having a base housing or frame which may be moved on wheels and a bed which holds workpieces. The bed is connected with the base...
5340082 Portable surface lift for a vehicle  
A portable surface lift for a vehicle and a pair of manually retractable wheels respectively attached to a mid-portion of opposite sides of the lift for rolling the lift over a garage floor...
5159989 Automatic hydraulic leveling system  
An automatic leveling system for a four-wheel vehicle system having outrigger assemblies at each of the four corners of the vehicle chassis and in which each outrigger assembly has an outrigger...
5156238 Portable surface lift for a vehicle  
A portable surface lift for a vehicle and retractable spring-loaded wheels attached to the lift for rolling the lift over a garage floor surface when the vehicle is not lifted on the lift. The...
5149241 Dual mast apparatus for storage and retrieval vehicles  
A novel dual mast storage and retrieval vehicle comprising structure which maintains each mast essentially vertical as variably weighted heavy loads are placed on a carriage disposed between the...
5149242 Vertical drive apparatus for storage and retrieval vehicles  
A novel vertical drive assembly for a storage and retrieval vehicle wherein a cable drive motor is horizontally juxtaposed between a lift cable winding and unwinding drum. The vertical drive...
5121816 Lift safety system  
A portable multi-stage lift is provided with multiple outriggers for stability. The lift cannot be raised unless the outriggers are positioned in a fully extended, load-bearing relationship with...
5105913 Tilt mechanism for portable hoist  
A portable telescopic hoist has an auxiliary tilt-back frame at the rear for supporting the hoist when it is tilted from its normal upright position to a backward sloped position to clear an...
5102179 Hunter's blind  
A hunter's blind having hinged walls which may be fastened together when in a vertical position and compactly stored when in a horizontal position, a connecting roof, ball rollers cooperating with...
4987976 Telescoping portable lift  
A manually-operated portable lift which may telescopically raise its mast or post so as to raise a lifting platform above the lift's initial height. The lift may be folded up to a compact and...
4984955 Lift apparatus  
The present invention comprises a lifting apparatus installed near or upon a generally horizontal raised bed of a vehicle for safely moving a wheelchair and its occupant operator to and from the...
4979592 Device for raising and lowering a step in a transfer lift  
A device for raising and lowering a transfer step provided at one end of a vertically movable table in a lift includes a lug projecting from the step and an axially movable rod extending along the...
4953666 Elevating apparatus having an offset upper boom maintaining a workstation level on a cantilevered angularly movable support that retracts into a compact position  
The invention provides an elevating apparatus for raising and lowering a work station holding personnel, equipment, and/or materials between a downward declining, compact retracted position and an...
4930598 Scissors lift apparatus  
A scissors lift apparatus having a wheeled tube chassis and a platform connected together by one or more scissors arm assemblies, each scissors arm assembly including a center arm and two outside...
4890692 Platform elevating apparatus  
An elevating device for a workman's platform in which a single lift cylinder is utilized, positioned below the lift arms when the arms are in their fully retracted or lowered position. A piston of...
4886413 Loader platform interface control and stop means  
Interface control for controlling the altitude of two roll planes of a deck surface relative to each other and providing cooperation with a stop that precludes the lowering of one of the roll...
4867277 Portable lifting device and cart  
A portable lifting device and cart is disclosed including a base having a pantographic lifting mechanism and a platform slidably connected and supported to upstanding support members. A...
4793437 Portable lift with telescopic booms and load-carrying apparatus  
Inclined telescopic booms actuated and regulated from the ground with detachable rungs forming a level track between the telescopic booms. A two-stacked load carrier, both stages on crawler type...
4655466 Cart  
A cart having a frame, front and rear wheels, and a handle. A pair of elevating link mechanisms are mounted on the frame, each comprising a pair of arms pivotally connected to each other at...
4619346 Elevator-type work platform  
An elevator has a horizontal chassis, a telescopingly extensible and retractable mast having upper and lower ends, a guide extending along the mast between its ends, and a platform adapted to...
4563121 Cargo elevator system  
A cargo elevator system, that includes a pivotable cargo platform, particularly adapted for mounting on a truck. The system is operable through a unique open/close sequence for translating the...
4550806 Elevating apparatus  
An elevating apparatus comprises an inclined elevator and a load-carrying carriage. The inclined elevator comprises a pair of guide rails, and the carriage is movable along the guide rails by...
4502568 Fork-lift truck with synchronized variable travelling and lifting surfaces  
The fork-lift truck comprises two elements independent of each other, each element comprising a vertical mast integral with a horizontal side frame provided with wheels and integral with two...
4479753 Wheelchair lift for passenger vehicles  
A lift is provided characterized by its ability to be simply retrofitted into a van or similar vehicle of virtually any style construction without requiring the modification of the existing...
4466509 Elevating device  
An elevating apparatus installed on a mobile body such as a crawler-type vehicle or truck comprises at least a pair of middle supporting beams pivotably coupled together by a pivot and unfoldable...
4435113 Self-propelled freight handling truck  
The self-propelled freight handling truck is comprised of a manually guided wheeled frame on which is mounted a mast and lifting forks, with a motor for supplying power to raise, lower, and tilt...
4427093 Locking device  
An automatic locking device is provided for a telescoping work platform that includes: a base frame, a middle frame and a platform frame, the locking device comprises a first sliding member...
4427094 Portable elevator device  
This invention is an electrically powered movable elevator device comprised of a base mounted on wheels upon which is mounted a substantially vertical hollow support member through which a screw...
4408948 Controlled-folding and controlled-unfolding multiple section platform assembly  
A controlled-folding and controlled-unfolding multiple section platform assembly for a structural entry. A platform assembly includes an inner and an outer platform section which are pivotally...

Matches 1 - 50 out of 105 1 2 3 >