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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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
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...
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...
3534832 AERIAL PLATFORM STRUCTURE  
3520382 OCCUPANT PROPELLED SCAFFOLD  
3503466 SCAFFOLD MOVING AND GUIDING DEVICE  
3429398 ADJUSTABLE MOVABLE SCAFFOLD  
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...
3282377 Elevated work-supporting platform  
3258084 Aerial lift construction  
3256954 Self-propelled means for scaffolds  
3232375 Self-propelled scaffold  
3124213 Title is not available  
3076522 Bridge scaffold apparatus  
3059721 Suspension device  
3035659 Form stripping scaffold  
3003579 Boom  
2970667 Self propelled aerial platform and hydraulic control system therefor  
2912130 Swivel seat for mechanical shovels  
2902110 Ladder construction  

Matches 1 - 50 out of 104 1 2 3 >