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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...
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7424932 |
Lifting hoist assembly
A hoisting device and method for hoisting material up an extension ladder. The device includes a load-carrying carriage having a wheel and roller axle assembly that also serves as rollers for...
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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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6533070 |
Roof buddy
Raisable and lowerable platforms for use with ladders that are laid against exterior and interior walls, and against other inclined surfaces such as pitched roof surfaces. Two or more ladders can...
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6422341 |
Lift-up rail extensions
A lift up rail extension assembly is to be mounted onto an existing ladder which has a first rail and an opposite second rail. The first and second rails are connected by at least one step. The...
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6357549 |
Guide rail climbing lifting platform and method
A guide rail system is used to erect towers, to place equipment on towers and for maintenance of towers. The guide rail may be added to existing towers, a climbing lifting platform is attached to...
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6244381 |
Ladder hoist device
A ladder hoist device for hoisting material up an extension ladder. The ladder hoist device includes a device that is able to move materials up and down an extension ladder. The device has a back...
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6216818 |
Mobile ladder including a goods lift
A mobile ladder (10) including a goods lift (12) which can be driven between upper (FIG. 3) and lower (FIG. 4) positions. The ladder has a default-immobile state which can be overcome by a force...
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6179087 |
Ladder
A default-immobile ladder (10) includes mobility means (12) displaceable between a ladder immobile position and a ladder mobile position in which the mobility means extends downwardly beyond the...
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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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5911287 |
Lifting device for use with a ladder
A lifting device for raising a load intended for support by a roof of a building utilizing a ladder. Device includes a sled having first portion for slidingly contacting the ladder and a second...
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5337857 |
Ladder adaptable platform
The present invention comprises a platform for an aluminum extension ladder which platform is adjustable upwardly and downwardly, and is pivotable between a pair of side frames, to permit a user's...
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5275256 |
Ladder carriage apparatus
An apparatus having first and second floor plates defining a floor opening to receive a ladder therethrough is provided, with the floor plates having first and second side plates mounted to opposed...
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5145031 |
Electric ladder
An adjustable ladder comprising, a pair of side supports, a device for retaining the supports in a spaced relationship, a rung, a device for slidably mounting the rungs in the supports, and a...
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5143181 |
Platform lift apparatus
An apparatus wherein a base plate mounts a plurality of base plate tubes, each mounting stabilizer legs, wherein the stabilizer legs are provided to include leveling screws to provide leveling of...
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4972922 |
Adjustable scaffolding assembly
The present invention relates to an improved adjustable scaffolding assembly and is seen to include an adjustable scaffolding supporting device, a roller assembly, and a peak stabilizer bar...
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4930599 |
Ladder and carriage combination
A combination ladder and carriage carried by the ladder for up and down movement to carry loads up the ladder at construction sites including building, repairs and the like at elevated heights. The...
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4800988 |
Adjustable platform for a rung ladder
An adjustable platform for a rung ladder has a footplate which provides sufficient surface area to enable full contact by the users feet. A footplate support system enables the footplate to...
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4772175 |
Space station erectable manipulator placement system
An erectable manipulator placement system for use on a space station and comprising an elongate lattice-like boom having dual guide tracks attached to parallel chords thereof, a carriage-like dolly...
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4706779 |
Transportable, twin telescopic arm platform hoist
The present invention is a transportable hoist consisting of a twin-arm telescopic unit comprising a given number of rectangular telescopic elements, which can be extended longitudinally by means...
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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 means...
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4546854 |
Load-carrying platform
The invention relates to a load-carrying platform, particularly for moving furniture or the like along an inclined elevator. The load-carrying platform is supported by a carriage which is movable...
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4546853 |
Portable folding platform apparatus used with a ladder and winch
A portable folding platform apparatus is disclosed which may be removably mounted on an extension ladder having a winch removably mounted at the top of the ladder. The apparatus may be used to lift...
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4467889 |
Ladder-guided service elevator
A service elevator, designed to carry persons up or down along a building wall or other structure, comprises a ladder secured to that structure and a carriage on which an endless conveyor band is...
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4345669 |
Wheelchair lift
A lift for moving a wheelchair over a stairway includes a ramp, a wheelchair supporting platform and a mechanism for operating the platform over the ramp. When the lift is inoperative, the...
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4258826 |
Combination stepladder and load lifting apparatus
Two frame sections are hingedly attached at their top and each frame section contains a pair of wheels at the bottom. One of the frame sections consists of a pair of laterally spaced parallel side...
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4183423 |
Ladder hoist
A cart bolted to a short bottom section of a ladder carries a winch. A cable on the winch runs over a pulley on a short top section of the ladder and is connected to a carriage having wheels...
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4049081 |
Operator-actuated elevating device
An elevatable operator-actuated lifting device, including a lower support frame and a platform section telescopically interfitted with the support frame as to be elevatable with respect thereto....
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4031980 |
Braking device for ladder lifter
There is provided a cam type braking device for a ladder lifter arranged so that as soon as the lifting wire rope for the ladder lifter is broken, a brake cam is pressed against the associated...
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4015685 |
Apparatus for aligning a mobile lift work platform
Apparatus for aligning a work platform which is cantilevered outwardly and laterally on a carriage for movement up and down on parallel rails of an elevated tower is illustrated as including a pair...
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3970170 |
Ladder bridging device
This invention relates to a device useful in connection with bridging two sections of an extension ladder. The device takes the form of a sleeve structure which extends from the side rail of one...
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3966018 |
Working platform lifting apparatus for aerial ladder truck
A working platform lifting apparatus for an aerial ladder truck, wherein the working platform movable up and down along the ladder is arranged so that it does not interfere with the extension and...
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3949833 |
Safety device for lifter-equipped extensible ladder vehicle
A device for use with a high-altitude working vehicle provided with a vertically and horizontally revolvable and extensible ladder and an operator-carrying lifter movable up and down along the...
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3921758 |
Aerial ladder truck
There is provided an aerial ladder truck having suitable means whereby obstacles such as ice and snow to the rolling movement of the ladder extending and contracting rollers and lifter raising and...
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3910378 |
Scaffold structure
A scaffold structure comprising a ladder assembly that is maintained in a substantially vertical orientation during use by means of two arms extending outwardly from two support members and that...
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3908801 |
Vertical hoist assembly
A vertical hoist car assembly such as would be used in a large power plant chimney, a silo, a dam structure, or the like, is disclosed. The assembly includes a ladder shaped guide track having...
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3891062 |
Telescopic lift for construction works
There is disclosed a mobile lift made up of a rectilinear guide adjustably held in upward inclined position by a support having a base of which the end is wheel-mounted so that the lift may be...
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3804207 |
LIFTING ATTACHMENT FOR LIGHTWEIGHT VEHICLES
This lifting attachment is adapted for mounting on a pickup truck. When stowed it is carried on a ladder rack on the vehicle, and when in use it is mounted on the vehicle trailer hitch. The...
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3799289 |
ELECTRIC STEPLADDER
A self-standing, collapsible stepladder including laterally spaced side members or rails supporting therebetween a platform for movement up and down along the rails for raising and lowering a load,...
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3749202 |
STAIRWAY SEAT CAR ELEVATOR
The stairway seat elevator is composed of a pair of guide rails mounted on the side of a staircase in vertically spaced parallel relation, a seat car frame extending between said rails for guided...
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3737007 |
ADJUSTABLE SCAFFOLD
An adjustable scaffold has movable ladder sections and a base with a fixed ladder portion. Cable and pulley assemblies in conjunction with a counterweight permit raising and lowering of the movable...
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3666054 |
LADDER DOLLY AND WINCH
A hand truck mounted on wheels has a load carrying framework and an extendable handle for steering the hand truck to the base of a ladder. The rear side of the hand truck framework has flanged...
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3493225 |
MEDICAL EXAMINATION APPARATUS
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3490558 |
STEPLADDER SCAFFOLD APPARATUS WITH ELEVATING WORKING PLATFORM
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3476212 |
COMBINATION STEPLADDER AND VERTICALLY MOVABLE PLATFORM
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3430734 |
PORTABLE ELEVATING APPARATUS
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3428145 |
ELEVATOR FOR EXTENSION LADDERS
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3402786 |
Personnel protective equipment for working energized conductors
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3344885 |
Personnel lift
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3237719 |
Power lift for ladders
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