Invalid walker with wheel control mechanism
First Claim
1. A walker device, comprising, a frame having a plurality of support points, roller means for providing full mobility of the device, releasable lock means on said roller means, lock release means operatively associated with said lock means,means initiated by a user and thereafter independent of operator control for actuating said lock means and said lock release means through a cycle which includes a lock release and subsequent reengagement of the lock whereby the user is free from control judgement over the distance the walker will advance after lock release;
- said roller means being a wheel with a drum carried thereby,said lock means being a series of aligned holes spaced circumferentially around said drum, and a retractable lock pin insertable in any aligned hole in said drum,said drum having a plurality of laterally spaced circumferential paths of holes therealong, each path having a different number of holes, and means to selectively and manually position said pin in alignment with one of said paths, whereby a lock cycle will release the wheel for advance a distance represented by the circumference of the wheel divided by the number of said holes in the selected path.
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Accused Products
Abstract
A walker to aid an invalid is disclosed. The walker includes a frame mounted on at least one wheel to allow the walker to roll along the floor. The frame and at least one wheel have coacting lock-catch-and-release means arranged such that when the user pushes down on the frame the lock will release and allow the walker to roll a measured, predetermined distance and thereat lock. Further movement is prevented until the frame is released and pressure again applied.
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Citations
3 Claims
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1. A walker device, comprising, a frame having a plurality of support points, roller means for providing full mobility of the device, releasable lock means on said roller means, lock release means operatively associated with said lock means,
means initiated by a user and thereafter independent of operator control for actuating said lock means and said lock release means through a cycle which includes a lock release and subsequent reengagement of the lock whereby the user is free from control judgement over the distance the walker will advance after lock release; -
said roller means being a wheel with a drum carried thereby, said lock means being a series of aligned holes spaced circumferentially around said drum, and a retractable lock pin insertable in any aligned hole in said drum, said drum having a plurality of laterally spaced circumferential paths of holes therealong, each path having a different number of holes, and means to selectively and manually position said pin in alignment with one of said paths, whereby a lock cycle will release the wheel for advance a distance represented by the circumference of the wheel divided by the number of said holes in the selected path. - View Dependent Claims (2, 3)
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Specification