US 12,290,482 B2
Elevating walker chair and components
Garrett W. Brown, Philadelphia, PA (US); Ryan Christopher Meers, West Chester, PA (US); Daniel Richard Lefebvre, Philadelphia, PA (US); and Stephan Michael Lawson, Malvern, PA (US)
Assigned to EXOKINETICS, INC., West Chester, PA (US)
Filed by Exokinetics, Inc., West Chester, PA (US)
Filed on Feb. 11, 2021, as Appl. No. 17/174,157.
Application 17/174,157 is a continuation in part of application No. 16/982,365, granted, now 11,602,469, previously published as PCT/US2019/023661, filed on Mar. 22, 2019.
Application 17/174,157 is a continuation in part of application No. 16/346,363, granted, now 11,685,188, previously published as PCT/US2017/060163, filed on Nov. 6, 2017.
Application 16/982,365 is a continuation in part of application No. 15/326,113, filed on Jan. 13, 2017, granted, now 10,842,706, issued on Nov. 24, 2020.
Claims priority of provisional application 62/975,449, filed on Feb. 12, 2020.
Claims priority of provisional application 62/649,809, filed on Mar. 29, 2018.
Claims priority of provisional application 62/649,746, filed on Mar. 29, 2018.
Claims priority of provisional application 62/420,383, filed on Nov. 10, 2016.
Prior Publication US 2021/0205158 A1, Jul. 8, 2021
Int. Cl. A61G 5/14 (2006.01); A61G 5/10 (2006.01); A61H 3/04 (2006.01)
CPC A61G 5/14 (2013.01) [A61G 5/1059 (2013.01); A61H 3/04 (2013.01); A61H 2201/0192 (2013.01); A61H 2201/1253 (2013.01); A61H 2201/1418 (2013.01); A61H 2201/1642 (2013.01); A61H 2201/165 (2013.01); A61H 2201/1671 (2013.01); A61H 2201/1676 (2013.01); A61H 2203/0431 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An elevating walker chair comprising:
a frame having four wheels;
a seat attached to the frame;
an adjustable lifting mechanism attached to the seat comprising:
a parallelogram structure having four pivotally connected links, the parallelogram connected to the frame at at least two of the four pivots and on opposite sides of the seat; and
a spring pivotably extending from a first link of the parallelogram to an adjustable termination point on a second link of the parallelogram to form a lifting triangle, wherein the spring termination point is displaced from a first pivot of the parallelogram; and
a height adjustment mechanism comprising:
an arcuate height adjustment strut;
a wall of the height adjustment strut having a series of holes; and
a height adjustment pin associated with a parallelogram link and selectively insertable into the holes to lock in a selected height of the seat.