Matches 1 - 50 out of 179 1 2 3 4 >


Match Document Document Title
9027710 Surgeon lift system  
A surgeon lift comprising a base, wheels attached to the base, each wheel comprising a locking mechanism, a cylinder supported on the base, a platform operatively connected to the cylinder, a...
8985275 Lift safety system  
A lift safety system that prevents the lifting of a support platform from a support base until all of the support legs for the support base are supporting a minimum amount of weight to ensure...
8944217 Suspension work platform hoist system with communication system  
A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical...
8863899 Lift safety system  
A lift safety system that prevents the lifting of a support platform from a support base until all of the support legs for the support base are supporting a minimum amount of weight to ensure...
8851236 Safety lockout system  
A safety lockout system for releasably locking a mast guided working surface to a mast is provided. The safety lockout system may include an outer rollcase, an inner rollcase, and a lockout...
8763757 Ladder climbing apparatus  
A ladder climbing apparatus is provided for use with a ladder having a plurality of rungs. The ladder climbing apparatus includes a frame, a prime mover mounted to the frame and a power supply...
8733509 Multiple input voltage hoist system  
A suspension work platform hoist system powered by an input power source for raising a work platform on a rope. The system includes a hoist having a motor that drives a traction mechanism designed...
8706363 System and method for adjusting a boundary for a machine  
A system for modifying a boundary of operation of a machine has a change in terrain sensor system. A controller determines a change in terrain based at least in part upon a change in terrain...
8627925 Foldable work platform  
The present invention generally relates to work platforms, and, more particularly, to a work platform for use with a lift truck to elevate personnel safely and conveniently.
8505688 Mast lift and mast lift system  
A lift system is coupled between a work platform and a mast on a mast lift. The lift system includes an overload clutch that slips upon an overload on the lift system, an overrun brake that...
8434594 Rotating platform for observation, photography, and/or hunting  
A highly stable rotating platform with a base, a roller deck assembly on top of the base, and a shooting deck coupled to the roller deck via leg assemblies. The leg assemblies contain two vertical...
8418810 Collapsible man-lift for use in wind turbine towers  
A collapsible man-lift for use in the hollow tower portion of a wind turbine includes a support frame assembly, a foldable floor assembly and a collapsible cage assembly. The support frame...
8403112 Hoist system with high system power factor  
A suspension work platform hoist system having reduced reactive power to produce a hoist system power factor of at least 0.95 when operating at a steady state full-load condition as the motor...
8333263 Front-end carrier for tractor  
This implement attaches to the hydraulic system of a front-end loader for a tractor or similar vehicle. It has two planar surfaces, a deck and a back, that are fastened together at an...
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...
8292039 Mast lift and mast lift system  
A lift system is coupled between a work platform and a mast on a mast lift. The lift system includes at least one lifting rope connected between the work platform and the mast via an idler roller...
8056677 Lift system with articulably joined subchassis  
This lift system serves as a powered ladder having a small footprint. The system is divided into two subchasses with a mast fixedly attached to a first subchassis for support of a liftable...
8016074 Work platform  
A platform for an aerial lift enables unobstructed access to a work area adjacent the platform. The platform includes a floor structure with front and rear sides and ends, and a safety rail...
7975807 Elevator climbing system  
A portable elevator climbing system removably attachable to a cantilevered overhang on an adjacent structure, whereby an elevator car travels up and down a plurality of roller chains. The roller...
7909139 Powered lift platform  
The present invention is a powered lift platform including a platform, at least one guide rail section in operative contact with the platform, each of the at least one guide rail sections...
7857097 Scaffolding apparatus and method  
An apparatus comprising a frame scaffold with a mechanically operated sliding support, as well as methods of assembling, using and disassembling a frame scaffold using the sliding support are...
7849971 Powered controlled acceleration suspension work platform hoist system  
A powered controlled acceleration suspension work platform hoist system for raising and lowering a work platform at a predetermined acceleration. The system incorporates several hoists attached to...
7760497 Powered controlled acceleration suspension work platform hoist control cooling system  
The hoist control cooling system for preferentially cooling components of a variable frequency drive that is controlling a hoist motor. The cooling system includes an inverter temperature sensor,...
7631730 Powered controlled acceleration suspension work platform hoist system  
A powered controlled acceleration suspension work platform hoist system for raising and lowering a work platform at a predetermined acceleration. The system incorporates several hoists attached to...
7546902 Personnel lift apparatus  
Accordingly, embodiments of the inventive disclosures made herein comprise a personnel lift apparatus for raising or lowering a standing person between two or more elevations or from a base...
7523809 Elevator top of car safety  
An elevator car (2) comprises a cover (14; 40) extending over at least a portion of the top surface of the car (24). The cover (14; 40) is mounted on a resilient support (28, 42). The car (2)...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...

Matches 1 - 50 out of 179 1 2 3 4 >