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US 7,350,621 B2Granted
Ladder transport system
AssigneeInovent, Inc.
InventorRichard J. Abraham
Life of this patent
Estimating the term…
Abstract
Embodiments of ladders (22, 106) are disclosed which utilize a wheel (112) to allow users to transport these ladders easily by rolling along a surface without carrying the entire weight of the ladder. The wheel (112) are located in positions which do not interfere with the use of these ladders.
Claims4
A ladder comprises:
- a pair of rails, each of the pair of rails including an end surface;
- and
- a plurality of wheels adjustably clamped to the rails;
- the plurality of wheels for allowing a user to transport the ladder by lifting only a portion of weight of the ladder, the plurality of wheels are in contact with a ground surface when the end surface of the rails is above the ground surface when the ladder is transported and the plurality of wheels are above the ground surface when the end surface of the rails are in contact with the ground surface when the ladder is in use, wherein the plurality of wheels comprises two wheels coupled to each of the rails, the two wheels being orthogonal to each other.
1 more element
Dependencies are inferred from the claim text.