Stair chair
First Claim
1. A chair including a backrest, a seat, and at least one wheel assembly having an axle defining an assembly axis, said at least one wheel assembly being constrained to rotate about said assembly axis, the at least one wheel assembly comprising a plurality of wheels, each of said wheels being rotatable about its own axis, and said chair including means for selectively engaging and disengaging said at least one wheel assembly to resist rotation of said wheel assembly about said assembly axis when said means are engaged.
2 Assignments
0 Petitions
Accused Products
Abstract
A stair chair is provided and includes a seat 30, a backrest 34, a foot rest 32, upper handles 84 and lower handles 82. Three wheels 62 are mounted at each side of the chair. The wheels are pivotal about their own axis and also a common axis. Rotation about the common axis can be braked or locked. The chair can be lowered downstairs with a person pulling on the upper handle 84 and another person pushing on the lower handles 82 in order to slow movement of the chair down the stairs.
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Citations
14 Claims
- 1. A chair including a backrest, a seat, and at least one wheel assembly having an axle defining an assembly axis, said at least one wheel assembly being constrained to rotate about said assembly axis, the at least one wheel assembly comprising a plurality of wheels, each of said wheels being rotatable about its own axis, and said chair including means for selectively engaging and disengaging said at least one wheel assembly to resist rotation of said wheel assembly about said assembly axis when said means are engaged.
Specification