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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...
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6619427 |
Foldable dual track ladder
The ladder system is disposed between two spaced storage shelves of the types found in crowded warehouse-type retail outlets. The ladder is mounted on an overhead track system and may be moved...
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6523640 |
Undercarriage for mobile ladders and platforms
An undercarriage for a mobile ladder stand or other similar warehouse apparatus includes a pair of retractable wheels located at the rear of the undercarriage frame and a pair of retractable wheels...
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6230841 |
Track ladder
A track ladder that includes a ladder frame, plurality of steps secured to the ladder frame and a carriage assembly secured to the ladder frame. The ladder frame rides on an upper track and a lower...
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6131869 |
Ladder deflecting device
A device for deflecting ladders and other moving structures away from sensitive and readily damageable stationary equipment. More particularly, disclosed is a device in the form of a wedge-shaped...
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6073725 |
Multi-position ladder and support therefor
A multi-position ladder includes a ladder, a longitudinally extending support member for supporting the ladder, and a connecting member connecting the support member and the ladder. The connecting...
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5653307 |
Dual track mounted pivoting ladder assembly
The ladder system is located adjacent the front face of a storage rack. The ladder is carried by a cantilever supported carriage assembly having a pair of pivotally mounted frames. The ladder is...
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5480002 |
Dual track mounted ladder system
The ladder system is located adjacent the front face of a storage rack. The ladder is carried by a cantilever supported carriage assembly. The ladder may move longitudinally along the front face of...
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5413191 |
Dual track ladder
A ladder system is disposed between two spaced storage shelves. The ladder may move longitudinally along the shelves, and may also be moved laterally between the shelves. Further, the ladder may...
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5148889 |
High level package retrieval system
A new and improved overhead package retrieval system, including a series of C-shaped tracks which are mounted onto storage shelf units, a platform that has rollers that fit within these C-shaped...
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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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4753321 |
Traveling worker platform
A worker platform for sandblasting a cylindrical fuel storage tank includes a lookout frame section secured to the tank top that has an arm extending radially outward beyond the tank wall and a...
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4660677 |
Personnel evacuation apparatus for an offshore platform
Personnel evacuation apparatus for use with an offshore platform. A launching ramp that is mounted to the platform by a gimbal is stowed in a vertical position with a survival vessel secured in the...
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4311208 |
Ladder safety lamp
A warning light assembly for use on ladders having a plurality of rungs to indicate the presence of someone on the ladder. The warning light assembly has a switch activated by a person's foot...
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4232759 |
Mobile ladder-scaffolding system
A track supported mobile ladder-scaffolding system with self-adjusting lateral supporting structure at the top for engaging a roof by means of a vehicle which engages track structure attachable to...
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3735838 |
WHEELED LADDER WITH A WEIGHT ACTUATED SELF-LOCKING WHEEL THEREON
The ladder is elevated above its supporting surface and has an arm pivotally mounted on the lower end portion thereof, which is yieldably biased in one angular direction thereof, into a stopped...
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3729062 |
SHIFTABLE LADDER INSTALLATION
A guide follower assembly secured to the lower portion of an inclined ladder engages a downwardly open guide rail channel for stabilizing the position of the lower portion of a ladder with respect...
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3340960 |
Ladder
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3283851 |
Wheel brake
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3029897 |
Ladder and support
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2946397 |
Ladder mount for vehicles
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2881040 |
Disappearing and slidable step-chair for kitchen cabinets and the like
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2840290 |
Telescopic ladders
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2806673 |
Drill wagons for use in tunneling or the like
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0938016 |
Title is not available
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