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Document |
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7383922 |
Load stopping system
A load stopping system for mechanically stopping a load in a relatively slow and controlled manner using rotational and frictional forces. The system includes a glide rod, a guide collar that moves...
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7370725 |
Motorized rungless ladder
A device supported by a ground surface and a structure for at least one of elevating and descending a user. The device includes a first guide rail having a first channel extending along a length...
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7281609 |
Elevator inspection safety devices
An elevator car includes a cross-head portion and a balustrade mounted to the cross-head portion. The balustrade is moveable from a retracted position for normal operation of the car to a deployed...
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7222697 |
Elevator
An elevator is described, comprising a first series connected pulley set installed in a fixing frame, a carriage located below the first series connected pulley set, a second series connected...
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7004288 |
Lift apparatus
The invention provides a lift apparatus for use with a ladder having two spaced upright stringers and a plurality of horizontal rungs bridging the stringers and spaced at a distance vertically from...
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6702064 |
Lifter having tiltable support rack assembly
A lifter includes a beam tiltably secured on top of an elevator for supporting an object to be elevated. A base is secured on top of the elevator, and a seat secured to the beam and having one end...
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6543578 |
Analog control
A control system for three mechanisms of a machine may include a pair of pivotable or rotatable structures and a telescoping or longitudinally urgeable structure that are coupled to a single...
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6471004 |
Self locking basket assembly
A self locking basket assembly has a basket extending from a base platform, and a gate system for releaseably securing a worker within the cage. The gate system includes a gate operatively mounted...
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6401864 |
Collapsible stabilizing devices
A stabilizing system includes at least one outrigger assembly. Each outrigger assembly has a pivotable first leg operably connected to a second leg. At least one locking mechanism is operatively...
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6378652 |
Lateral jib for vertical mast mobile elevating work platform
A lifting apparatus for a mobile crane work platform comprising a telescopic mast with a base section, and a plurality of vertically movable sections, the work platform being connected by an...
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6297744 |
Aerialift warning system and method
An aerialift warning system and method for use on aerialift equipment to warn the aerialift operator to fasten his/her safety lanyard and to warn persons within the zone of danger below the...
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6253878 |
Ergonomically adjustable machine operator platform
An ergonomically adjustable machine operator platform includes a worker support surface which includes a top surface and a bottom, a plurality of support legs disposed on a floor, wherein each...
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6174124 |
Load trays for personnel carrying vehicles
A multi-task capable work assist vehicle is designed for transporting an operator and items to be handled by the operator and for elevating the operator with such items supported upon a load tray...
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6170606 |
Analog control
A mobile machine which carries the operator of the machine is equipped with a control which has a shape, geometry and motion analogous to that of the machine and which causes machine motion...
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6095286 |
Personnel lift with adjustable shim wear blocks
A personnel lift (20) having adjustable side-to-side shim assemblies (38a-d) used in conjunction with a series of slide blocks (39, 40) in the mast of the personnel lift. The mast of the personnel...
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6095284 |
Elevatable stands for physically challenged hunters
An elevatable stand construction 10 for physically challenged hunters which includes a ladder style main framework member 20 supported in an upwardly angled disposition, a chair style platform...
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6065565 |
Hybrid power system for a vehicle
An apparatus includes a generator assembly having a power source operable to power a generator. The generator is connected to a battery assembly having one or more batteries. The battery assembly...
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6050365 |
Scissors-type work platform lift machine with electro-mechanical based lift actuation arrangement
A scissors-type work platform lift machine includes a mobile chassis having rear stationary wheels and front steerable wheels, a scissors lift mechanism mounted at a lower end on the chassis, a...
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6019190 |
Motor cover for a work assist vehicle
A work assist vehicle includes a self propelled, steerable body having a chassis and a drive mechanism supported on the chassis; a mast assembly coupled to the body; and, a personnel compartment...
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5992572 |
Personnel carrying vehicle
A personnel carrying vehicle comprising a self propelled, steerable body, a telescoping mast attached to and extending upwardly from said body, and a personnel compartment attached to the mast and...
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5950760 |
Scaffolding system for use on an inclined surface
A scaffolding system for use on an inclined surface, such as inside a ship cargo hold. The scaffolding system includes a scaffold pole and a support bracket that secures the scaffold pole to a...
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5890559 |
Personnel lift with automatic set-up transport wheel
A personnel lift (20) including a three-wheeled transport in which a rear or transport wheel (30) is connected to a lever arm or handle (32) that is designed to raise and lower the transport wheel...
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5875869 |
Personnel lift with automatic set-up transport wheel
A personnel lift (20) including a three-wheeled transport in which a rear or transport wheel (30) is connected to a lever arm or handle (32) that is designed to raise and lower the transport wheel...
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5850892 |
Personnel lift with adjustable shim wear blocks
A personnel lift (20) having adjustable side-to-side shim assemblies (38a-d) used in conjunction with a series of slide blocks (39, 40) in the mast of the personnel lift. The mast of the personnel...
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5803204 |
Personnel lift with clamshell cage assembly
A clamshell cage assembly is provided for use in conjunction with a portable personnel lift. The personnel lift may be either a jib boom lift or a lift having a multi-sectional telescoping mast....
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5755306 |
Personnel lift incorporating an outreach mechanism for an aerial work platform
An outreach mechanism (34) for an aerial work platform (22) on a personnel lift (20). The outreach mechanism (34) is designed to attach an aerial work platform (22) to the upper section (24A) of a...
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5722505 |
Man platform for an aerial boom
A man-lifting platform for mounting on an aerial boom comprising a frame adapted to be pivotally connected to the distal end of the aerial boom. The frame has a pair of sleeves on opposite sides...
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5645142 |
Wedge braking system for multi-stage lifts
Apparatus for braking relative vertical movement between two vertical members includes a ramp mounted on one of the members to oppose a vertical face on the other. If the ramp member accelerates...
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5636705 |
Apparatus for moving a work platform along a rail
The scaffolding comprises a post having a plurality of vertically aligned and equally spaced studs protruding on one of its surfaces. A frame supporting a work platform can move along the post, a...
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5586616 |
Rotatable scaffold
A scaffold adapted to be used with a forklift truck. The scaffold may be rotated manually 360 degrees by a worker after being lifted by the forklift. The unit is simple in construction,...
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5555953 |
Portable scaffolding attachment for front end loader or forklift
A scaffolding system which is attached to a prime mover such as a front end loader or forklift and has "Wings" or platforms extending outward from a "Center Frame" or platform and rotating in...
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5497851 |
Pivoting work platform
A lifting platform for elevating workers and materials during construction includes a load supporting deck (12). The deck is supported on a pair of intersecting channels (24). The channels are...
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5487446 |
Apparatus for self-adjusting the height of an outrigger attachable to scaffolding
An apparatus for self-adjusting the height of an outrigger attachable to scaffolding comprising a support having a back wall and side walls with a plurality of apertures located along the length of...
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5390104 |
Adaptive control man-augmentation system for a suspended work station
An adaptive control man-augmentation system controls the movement of a suspended work station. A support structure, usually mounted on a chassis, has an extendible boom and a work station at the...
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5370206 |
Driving system for elevator
A driving system for elevators includes a cab, a pair of chain suspenders on the bottom of the cab and suspended from the roof of a building, a synchronized transmission device having a plurality...
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5337858 |
Safety system for multi-stage lifts
A lift has a base frame supported on a pair of screw jacks and a pair of support legs when a multi-stage mast on the lift is to be raised. The support legs are slide mounted in guides and each is...
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5310018 |
Scaffold
An improved scaffold of the lift type having a base and a working platform on top of the base. Vertical support posts are provided at the corners of the base passing through guide means at the...
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5273132 |
Compact aerial lift vehicle with a vertically movable platform
An aerial lift vehicle, having a compact configuration and separable into several parts for storage, comprising a body having wheels, a detachable vertical post, and a platform attached to the...
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5271482 |
Electric light weight portable scaffolding
A light weight, easily assembled, readily portable by a single individual, adjustable to most any terrain electric scaffold having a base with a plurality of outrigger members with adjustable feet...
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5203425 |
Personnel lift devices
The present invention provides personnel lift devices that include at least one of six design features. Each of the design features is discussed individually. The lift device includes an operator's...
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5196998 |
Adaptive control man-augmentation system for a suspended work station
An adaptive control man-augmentation system controls the movement of a suspended work station. A support structure, usually mounted on a chassis, has with an extendable boom and a work station at...
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5158157 |
Vertically adjustable work station assembly
A vertically adjustable work station for use proximate a conveyor belt or the like. The work station includes a platform with side rail assemblies that is mounted for vertical displacement to...
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5131503 |
Vertically adjustable work station assembly
A vertically adjustable work station for use proximate a conveyor belt or the like. The work station includes a platform with side rail assemblies that is mounted for vertical displacement to...
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5119907 |
Vertically adjustable work station assembly
A vertically adjustable work station for use proximate a conveyor belt or the like. The work station includes a platform with side rail assemblies that is mounted for vertical displacement to...
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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...
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5082085 |
Platform leveling apparatus
A mobile aerial lift platform vehicle of the type having an upstanding pedestal and an elevating assembly mounted on the pedestal to raise and lower the work platform while maintaining the center...
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5052521 |
Stairway wheelchair lift
A stairway wheelchair lift includes a stationary motor drive unit, a rail assembly extending along the stairway and a mobile platform movable along the rail. A flexible drive member, such as a...
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5018923 |
Automated bricklaying apparatus
Automated installation for the laying for masonry on a wall, especially of a converter, comprising an operating station with a work plateform movable vertically inside the enclosure and capable of...
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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...
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4967876 |
Powered access platform units
A powered access platform unit having a wheeled base carrying a corner pillar to which is articulated one end of a parallel linkage boom articulated at the other end to the remote corner of a...
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