A roller assembly includes a housing that has a top end, a bottom end and a peripheral wall extending therebetween. The top end has a first well extending downwardly therein. The bottom end has a second well extending upwardly therein. The top end has a groove extending downwardly therein. The groov
A roller assembly includes a housing that has a top end, a bottom end and a peripheral wall extending therebetween. The top end has a first well extending downwardly therein. The bottom end has a second well extending upwardly therein. The top end has a groove extending downwardly therein. The groove extends into the first well. The first well may insertably receive a leg of a walker. The peripheral wall is convexly arcuate, giving the housing a spherical shape. A grip is positioned within the first well. The grip may engage the leg of the walker. A lock is coupled to the housing to releasably engage the leg. A roller is coupled to the housing. The roller may roll the walker along the support surface.
대표청구항▼
1. A roller assembly configured to be coupled to a walker, said assembly comprising: a housing having a top end, a bottom end and a peripheral wall extending therebetween, said top end having a first well extending downwardly therein, said bottom end having a second well extending upwardly therein,
1. A roller assembly configured to be coupled to a walker, said assembly comprising: a housing having a top end, a bottom end and a peripheral wall extending therebetween, said top end having a first well extending downwardly therein, said bottom end having a second well extending upwardly therein, said top end having a groove extending downwardly therein, said groove extending into said first well, said first well being configured to insertably receive a leg of a walker, said peripheral wall being convexly arcuate such that said housing has a spherical shape;a grip positioned within said first well, said grip being configured to engage the leg of the walker, said grip comprising a plurality of pads positioned within said first well, said pads being distributed around an entire perimeter of said first well;a lock coupled to said housing such that said housing is configured to releasably engage the leg when said lock is engaged;a roller coupled to said housing, said roller being configured to roll the walker along the support surface; anda plurality of spring biasing members each extending between a bounding surface of said first well and one of said pads, said spring biasing members biasing said pads inwardly from said bounding surface, said pads being configured to frictionally engage the leg of the walker. 2. The assembly according to claim 1, wherein said lock comprises a pin extending through arms positioned on opposite sides of said groove. 3. The assembly according to claim 2, further comprising a handle coupled to an end of said pin, said handle being positionable in a locked position to reduce a diameter of said first well, said lock being configured to retain said housing on the leg of the walker when said lock is positioned in said locked position. 4. The assembly according to claim 3, further comprising said lock being positionable in an open position to increase a diameter of said first well, said lock being configured to allow said housing to be removable from the leg of the walker when said lock is positioned in said open position. 5. The assembly according to claim 1, wherein said roller comprises a ball positioned within said second well, said ball being configured to abut the support surface such that the walker is easily rolled along the support surface. 6. The assembly according to claim 5, further comprising a bounding surface of said second well having a lower portion and an upper portion, said lower portion being concavely arcuate, said ball abutting said lower portion such that said ball is retained within said second well. 7. The assembly according to claim 6, further comprising a bearing positioned within said upper portion, said bearing engaging said ball, said bearing reducing a friction of said ball within said second well. 8. A roller assembly configured to be coupled to a walker, said assembly comprising: a housing having a top end, a bottom end and a peripheral wall extending therebetween, said top end having a first well extending downwardly therein, said bottom end having a second well extending upwardly therein, said top end having a groove extending downwardly therein, said groove extending into said first well, said first well being configured to insertably receive a leg of a walker, said peripheral wall being convexly arcuate such that said housing has a spherical shape;a grip positioned within said first well, said grip being configured to engage the leg of the walker, said grip comprising: a plurality of pads positioned within said first well, said pads being distributed around an entire perimeter of said first well; anda plurality of spring biasing members each extending between a bounding surface of said first well and one of said pads, said spring biasing members biasing said pads inwardly from said bounding surface, said pads being configured to frictionally engage the leg of the walker;a lock coupled to said housing such that said housing is configured to releasably engage the leg when said lock is engaged, said lock comprising: a pin extending through arms positioned on opposite sides of said groove; anda handle coupled to an end of said pin, said handle being positionable in a locked position to reduce a diameter of said first well, said lock being configured to retain said housing on the leg of the walker when said lock is positioned in said locked position, said lock being positionable in an open position to increase a diameter of said first well, said lock being configured to allow said housing to be removable from the leg of the walker when said lock is positioned in said open position;a roller coupled to said housing, said roller being configured to roll the walker along the support surface, said roller comprising: a ball positioned within said second well, said ball being configured to abut the support surface such that the walker is easily rolled along the support surface, a bounding surface of said second well having a lower portion and an upper portion, said lower portion being concavely arcuate, said ball abutting said lower portion such that said ball is retained within said second well; anda bearing positioned within said upper portion, said bearing engaging said ball, said bearing reducing a friction of said ball within said second well.
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이 특허에 인용된 특허 (18)
Deutsch Norman, Apparatus for making an object movable.
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