US 12,642,355 B2 · Powered chair with independent seat

Abstract

A powered chair comprises a chair framework, which includes a pair of oppositely disposed armrests, a chair seat frame which is fixedly connected to the pair of armrests, a footrest, a backrest, a first linear actuator mounted upon the pair of armrests and operatively connected to the footrest, and a second linear actuator mounted upon the armrests and operatively connected to the backrest. When the first and second linear actuators are actuated, they can respectfully actuate or move the footrest and backrest, however, in view of the fact that the first and second linear actuators are not operatively connected to the chair seat frame, and in view of the additional fact that the chair seat frame is fixedly mounted upon the pair of armrests, the chair seat frame will remain stationary despite movements of the footrest and backrest, to any one of their multiple positions, as a result of the actuation of the first and second linear actuators.

Claims17

Dependent claims

A powered chair, comprising:

a pair of oppositely disposed armrests;
a chair seat frame fixedly secured to said pair of oppositely disposed armrests;
a backrest pivotally mounted upon said pair of oppositely disposed armrests;
a footrest pivotally mounted upon said pair of oppositely disposed armrests;
a first cross-bar member fixedly mounted upon said pair of oppositely disposed armrests;
a second cross-bar member pivotally mounted upon said pair of oppositely disposed armrests;
and
a linear actuator operatively connected to said footrest so as to move said footrest between retracted and extended positions and having first and second oppositely disposed ends thereof pivotally mounted upon said first and second cross-bar members;
whereby, since said chair seat frame is fixedly mounted upon said pair of oppositely disposed armrests, said chair seat frame will remain stationary despite movement of said footrest between said retracted and extended positions by said linear actuator.

6 more elements

A powered chair, comprising:

a pair of oppositely disposed armrests;
a chair seat frame fixedly secured to said pair of oppositely disposed armrests;
a backrest pivotally mounted upon said pair of oppositely disposed armrests;
a footrest pivotally mounted upon said pair of oppositely disposed armrests;
a first cross-bar member is fixedly mounted upon said pair of oppositely disposed armrests;
a second cross-bar member is pivotally mounted upon said pair of oppositely disposed armrests;
and
a linear actuator operatively connected to said backrest so as to move said backrest between upright and reclined positions and having first and second oppositely disposed ends thereof pivotally mounted upon said first and second cross-bar members;
whereby, since said chair seat frame is fixedly mounted upon said pair of oppositely disposed armrests, said chair seat frame will remain stationary despite movement of said backrest between said upright and reclined positions by said linear actuator.

6 more elements

A powered chair, comprising:

a pair of oppositely disposed armrests;
a chair seat frame fixedly secured to said pair of oppositely disposed armrests;
a backrest pivotally mounted upon said pair of oppositely disposed armrests;
a footrest pivotally mounted upon said pair of oppositely disposed armrests;
a first cross-bar member is fixedly mounted upon said pair of oppositely disposed armrests;
a second cross-bar member is pivotally mounted upon said pair of oppositely disposed armrests;
a first linear actuator operatively connected to said footrest so as to move said footrest between retracted and extended positions and having first and second oppositely disposed ends thereof pivotally mounted upon said first and second cross-bar members;
and
a second linear actuator operatively connected to said backrest so as to move said backrest between upright and reclined positions;
whereby, since said chair seat frame is fixedly mounted upon said pair of oppositely disposed armrests, said chair seat frame will remain stationary despite movement of said footrest between said retracted and extended positions by said first linear actuator, as well as despite movement of said backrest between said upright and reclined positions by said second linear actuator.

7 more elements

Dependencies are inferred from the claim text.

Powered chair with independent seat

Life of this patent

Powered chair with independent seat

Life of this patent

Abstract

Claims17