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8593265 |
Motorized wheel system with wireless remote control unit for ladders
A motorized wheel system with wireless remote for portable support structure such as ladders and scaffolds to enable a user to relocate the ladder without dismounting by attaching wheels to the... |
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8434592 |
Mobile tower drive system
A mobile tower drive system for efficiently attaching a removable drive system to a scaffolding unit and driving the scaffolding unit from the work platform. The mobile tower drive system... |
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7004284 |
Scaffold moving device
A portable scaffold moving device for connecting to scaffolding and which provides rotary motion to a drive wheel, to move scaffolding in select directions. The portable scaffold moving device... |
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6929093 |
Accessory for a ladder
An accessory for a ladder includes a set of wheels that can be attached to the feet of the ladder and a gear mechanism that couples those wheels to an operating handle. The operating handle... |
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6880672 |
Self propelled scaffolding
A light-weight self-propelled scaffold vehicle is guidable through the use of a toggle switch. It is dimensioned and designed to be able to be utilized in small areas and through 30 inch doorways... |
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6786299 |
Swivel-power scaffold mobilizing device
A novel and unique user-friendly swivel-power scaffold mobilizing device that provides movement in any direction parallel to the ground and rotation about a vertical axis. The device may be... |
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6533067 |
Scaffold moving device
A portable device for connecting to scaffolding and which provides rotary motion to a drive wheel, to move scaffolding in select directions. The device includes a power wheel, rotary driven... |
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6431314 |
Mobile scaffold vehicle
The mobile scaffold vehicle has a motorized base with an upper surface and a first frame member and a second member. The first and second fame members are pivotally mounted near respective... |
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6227553 |
Attachment assembly for use on flat roofs
An attachment assembly provides a secure attachment point for the fall arrest tether lines of safety harnesses of workers on flat roofs, the assembly being movable over the roof as required. The... |
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6109390 |
Universal motorized scaffold truck
A universal motorized scaffold truck with a horizontal support frame adapted for removably supporting scaffold or "A" ladders thereon and supported by wheels for lateral movement on a ground... |
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5960906 |
Movable ladder support assembly
A ladder support system, comprising a free-standing frame having an upper and lower horizontal member, and a ladder that is supported on the upper horizontal member and lower horizontal member.... |
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5863020 |
Lifeline mounting apparatus
Clamping apparatus for providing a fixed support on a fixed beam or other similar structures wherein outer and inner elongated members are mounted for relative sliding telescoping movement... |
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5722506 |
Movable working platform
A movable working platform comprises a scaffold including a front frame having a pair of support posts, and a pair of front wheels mounted on opposite sides of a lower end of the front frame, a... |
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5653305 |
Self-propelled step ladder
A self-propelled stepladder including a moveable platform having a front end, a rear end, a front pair of wheels secured the front end, and a rear pair of wheels secured to the rear end; a motor... |
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4967733 |
Lifting carriage
A lifting carriage having a rectangular frame provided with four corner posts for guiding an elevating platform mounted between these posts. Each post has a toothed rack on which a toothed gear... |
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4917215 |
Space station transport system for extravehicular activity
A rail transport system is secured to a space station and provides a path for astronaut travel. Releasable bindings are journalled to a rail so that an astronaut can quickly travel from one point... |
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4911263 |
Ambulatory ladder
Ambulatory ladder apparatus constructed as a stepladder frame supported on a set of four base wheels. A user-powered drive is mounted under the lowermost step of the ladder, and is mechanically... |
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4899847 |
Mobile supports
This invention is directed at a mobile ladder which has a two pairs of rollers. One pair of rollers moves in a first metal trough and the other pair moves in another metal trough. The metal trough... |
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4765424 |
Apparatus for transporting a suspension cradle
The invention relates to a suspension cradle or cradles which can be transported along an upper region such as the rim of an upright edifice such as a cooling tower, the rim having a substantially... |
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4662476 |
Portable scaffold and retrofit kit therefor
A retrofit kit for a portable scaffold having a relatively open frame supported for movement on a plurality of wheels and a platform for a worker disposed on the frame includes a wheel and a mount... |
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4475611 |
Scaffold propulsion unit
A propulsion unit for span scaffolds having vertical castered columns at the four corners thereof. The propulsion unit includes a first elongated frame member extending between the columns on one... |
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4437543 |
Control system for cage supported by articulated boom
A control system for a personnel carrier attached to a boom which is displaceable by pressure fluid. The control system comprises at least one hand operable controlled handle axially rotatable in... |
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4319662 |
Fire fighting apparatus for a storage/retrieval machine
A storage/retrieval machine (10) is provided with equipment to adapt the machine for use in fighting fires in a warehouse in which the machine is installed. A plurality of platforms (26, 30) and... |
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4273214 |
Track mounted aerial lift platform apparatus
An aerial lift platform apparatus having tracks. A rotatable upper works is mounted on a chassis, and includes a turntable, a telescopic boom having a workman's platform at its outer end, and an... |
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4267900 |
Emergency escape system
An emergency escape system designed for use with multistory buildings. The system comprises generally a vertical zigzag track formed by a plurality of special contour structures, each structure... |
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4207965 |
Gliding cars and tracks type high building emergency escaping device
An emergency escaping device of this invention consists of a continuous W shape metallic tracks vertically mounted alongside the outer wall of a building or between buildings. Said tracks having... |
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4155416 |
Occupant-operated mobile work vehicle for paraplegics
An occupant-operated motorized vehicle for supporting paraplegics in a standing posture for working with their hands comprising a three-wheeled chassis steered by its rear single wheel, a platform... |
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4088202 |
Scaffolding cart
An electrically powered steerable scaffolding cart having a vertically positionable platform and handrails transports and supports a workman while he performs overhead work. |
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4064968 |
Scaffold for working on a pipeline movable relative to a base
The invention involves working on a pipeline which is subject to movements relative to a base such as ground, the deck of a floating barge, and the like. A rollable scaffold is frictionally... |
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3937297 |
Milking chair apparatus
A mobile milking chair apparatus which is controlled by the operator to place the operator in a position to milk a series of cows in a milking parlor. The chair conveys the operator along a line... |
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3930548 |
Motorized scaffold attachment
A small portable motorized attachment for propelling portable scaffolds from place to place is provided comprising a pair of electrically operated propulsion units adapted to detachably replace... |
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3703218 |
RESCUING DEVICE
Rescuing device for rescuing persons from the chairs of inoperative chairlifts or the like in which on a supporting member rollers are provided, against which the cable carrying the chairs is... |
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3584705 |
CONTROL SYSTEM FOR MOBILE WORK PLATFORMS
A control system for mobile work platforms adapted elevationally to position a worker relative to workpieces such as trees in an orchard and the like with such a platform being mounted on a mobile... |
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3534832 |
AERIAL PLATFORM STRUCTURE
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3520382 |
OCCUPANT PROPELLED SCAFFOLD
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3503466 |
SCAFFOLD MOVING AND GUIDING DEVICE
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3429398 |
ADJUSTABLE MOVABLE SCAFFOLD
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3338195 |
Device for the attendance of an embroidery machine
1,105,674. Embroidery machines. ADOLPH SAURER Ltd. 26, Oct., 1965 [3, Nov., 1964], No. 45217/65. Heading D1G. An embroidery machine has a ladder to provide a platform on which the operator can... |
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3282377 |
Elevated work-supporting platform
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3258084 |
Aerial lift construction
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3256954 |
Self-propelled means for scaffolds
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3232375 |
Self-propelled scaffold
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3124213 |
Title is not available
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3076522 |
Bridge scaffold apparatus
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3059721 |
Suspension device
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3035659 |
Form stripping scaffold
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3003579 |
Boom
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2970667 |
Self propelled aerial platform and hydraulic control system therefor
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2912130 |
Swivel seat for mechanical shovels
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2902110 |
Ladder construction
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