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| Number | Title | Issue Date |
| 8074769 | Ladder accessory A device is provided for aiding a user in transporting a load up and down a ladder assembly. The ladder assembly includes a fly ladder having slidably connected to a base ladder. Each ladder includes first and second spaced rails interconnected by a plurality of spa... | 12/13/2011 |
| 7942243 | Intermediate cable fairlead An intermediate cable fairlead is comprised of a frame assembly, a left and right wheel assembly affixed to the frame assembly, and a pulley wheel attached to the wheel assembly. The intermediate cable fairlead can be attached to a ladder and utilized to move materi... | 05/17/2011 |
| 7900745 | Motor driven lifting assembly A motor driven lifting assembly includes a ladder, a plurality of fastening members removably and pivotally attached to an upper end of the ladder, and a plurality of wheels attached to a lower end of the ladder. A platform supports the air-conditioning unit and is ... | 03/08/2011 |
| 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 engagement with the rails of the ladder. The wheel and roller axle assembl... | 09/16/2008 |
| 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 thereof and a second guide rail having a second channel extending along... | 05/13/2008 |
| 7314406 | Tree hoist system A tree hoist system is provided utilizing a mast having a plurality of steps to allow the upper portion of the mast to be secured to a tree without requiring a ladder. The tree hoist system includes a cable and brake winch to lock or raise/lower an attached game fee... | 01/01/2008 |
| 7246682 | Ladder elevator device An elevator device that is installed on one or more ladders to lift loads from the ground to a desired position on a roof. A base securing device can be added to each of the ladders to insure stability. An outrigger mounted on a user's truck can be employed to furth... | 07/24/2007 |
| 7025318 | Container support A container (10) having a plurality of panels (12–18) joined together to form a sleeve (64). The panels (12–18) each have an end edge that cooperate to define an imaginary plane (P) at one end of the sleeve (64). The container ... | 04/11/2006 |
| 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 one another. The lift apparatus comprises a frame, a prime mover mou... | 02/28/2006 |
| 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 each include the platforms which are controlled by motors t... | 03/18/2003 |
| 6505785 | Method and means for mounting a wind turbine on a tower The apparatus of this invention is utilized for mounting a wind turbine on the upper end of a wind turbine tower. The invention also relates to the method of erecting the same. The tower is provided with a pair of guide rails positioned on opposite sides ... | 01/14/2003 |
| 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 lift up rail extension assembly includes a first rail extensi... | 07/23/2002 |
| 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 the guide rails and is used to transport items up and down ... | 03/19/2002 |
| 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 plate. The back plate has a front side, a back side, a top ... | 06/12/2001 |
| 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 manually applied to a handle. The ladder can then be moved a... | 04/17/2001 |
| 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 foot of the ladder and manually actuable means (32) for disp... | 01/30/2001 |
| 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 member 30 slidably disposed on the main framework member 20, a... | 08/01/2000 |
| 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 portion providing a platform for a load. The sled is movable ... | 06/15/1999 |
| 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 foot a comfortable support, in addition to the ladder rung... | 08/16/1994 |
| 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 ends of the floor plates, with the side plates arranged i... | 01/04/1994 |
| 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 device for moving the rung along the supports for adjusting the... | 09/08/1992 |
| 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 the associated apparatus relative to an underlying support ... | 09/01/1992 |
| 5072808 | Ladder adaptable platform A ladder adaptable platform for attachment to a typical extension ladder which has a pair of parallel side rails and spaced rungs. The ladder adaptable platform has a platform surface which is engageable at the backside of a desired rung, the platform sur... | 12/17/1991 |
| 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 assembly. The adjustable scaffolding supporting device is adapted... | 11/27/1990 |
| 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 upper ends of the ladder rails are extended in bow-like f... | 06/05/1990 |
| 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 accomodate a range of angles of inclination of the ladder relativ... | 01/31/1989 |
| 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 movable along said tracks, and a segmented maneuvering ar... | 09/20/1988 |
| 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 of a telescopic hydraulic cylinder. A carriage with a work ... | 11/17/1987 |
| 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 of a cable. The carriage is movable along the guide rails... | 11/05/1985 |
| 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 loads to the top of a house, to the different floors of a... | 10/15/1985 |
| 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 along guide rails of the elevator. Telescopic guides are pr... | 10/15/1985 |
| 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 supported. The band has projecting dogs engaging the rungs ... | 08/28/1984 |
| 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 wheelchair supporting platform can be removed from the ramp and th... | 08/24/1982 |
| 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 rails having horizontal steps disposed therebetween. The o... | 03/31/1981 |
| 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 running in channel-like side members of the ladder. The carriage... | 01/15/1980 |
| 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. Hydraulically actuated piston and cylinder means are provide... | 09/20/1977 |
| 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 ladder rail, whereby the lifter is braked and it is securely s... | 06/28/1977 |
| 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 of vertically spaced horizontal shafts carried by a first... | 04/05/1977 |
| 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 section of a ladder to co-operate with the side rail of anot... | 07/20/1976 |
| 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 contraction of the ladder, that when it is stopped at any d... | 06/29/1976 |
