Adjustable reclining chair

• US 7,575,279 B2
• Filed: 10/13/2004
• Issued: 08/18/2009
• Est. Priority Date: 10/30/2003
• Status: Active Grant

• Current Assignee: DewertOkin Technology Group Co., Ltd.
• Original Assignee: Robco Designs Limited
• Inventors: Robertson, Dale
• Primary Examiner(s): Brown; Peter R.
• Application Number:
  US10/577,674
• Publication Number:
  US 20070132292A1
• Time in Patent Office: 1,770 Days
• Field of Search: 297/69, 297 83- 86, 297/330, 297/331, 297/335, 297/DIG.10
• US Class Current: 297/330
• CPC Class Codes: A47C 1/0242 by electric motors
• CPC Class Codes: A47C 7/506 of adjustable type
• CPC Class Codes: A61G 5/14 Standing-up or sitting-down aids
• CPC Class Codes: Y10S 297/10 Occupant-arising assist

Abstract

One aspect of the invention concerns a lift-recliner chair comprising a base portion (12), a seat portion (14) pivotally connected to the base portion, a back portion (16) pivotally connected to the seat portion and a first actuator (62) for moving the seat portion with respect to the base portion and a second actuator (64) for moving the back portion with respect to the seat portion so as to alter the configuration of the chair. The actuators are substantially enclosed within the base portion of the chair between a pair of opposed structural base portion side panels (18) in all configurations of the chair. The seat portion is pivotally connected to the side panels (18) and is movable between a retracted and nested position within the base portion to an raised position in which it is telescopically extended from the base. The nested configuration can reduce the risk of entrapment between moving parts of the chair.

Claims

1. A lift-recliner chair comprising a base portion having a pair of upstanding rigid side panels and a rigid rear panel extending between the side panels, a seat portion pivotally connected to the base portion, a back portion pivotally connected to the seat portion and actuator means for moving the seat portion with respect to the base portion between a fully retracted position and a fully raised position to alter the configuration of the chair, the actuator means also for moving the back portion with respect to the seat portion to alter the configuration of the chair, wherein the actuator means is located between the side and rear panels of the base portion, wherein the seat portion has a pair of downwardly depending rigid side panels and a rigid rear panel, and wherein the side and rear panels of the seat portion and the side and rear panels of the base portion overlap and nest with each other, respectively, in both the fully retracted and fully raised positions to enclose a region containing the actuator means in all configurations of the chair including the fully retracted and fully raised positions.

2. A lift recliner chair as claimed in claim 1 wherein the seat portion is nested within and extendable from the base portion.

3. A lift-recliner chair as claimed in claim 1 wherein the seat portion is pivoted with respect to the base portion about a pivot axis positioned towards a front of the base portion.

4. A lift-recliner chair as claimed in claim 1 wherein the seat portion is pivotally connected to the side panels of the base portion.

5. A lift-recliner chair as claimed in claim 1 wherein the back portion comprises a generally rectangular frame and a pair of pivot arms which extend from the frame and pivotally connect the frame to the seat portion.

6. A lift recliner chair as claimed in claim 5 wherein the pivot arms pivotally connect the back portion to the side panels of the seat portion.

7. A lift-recliner chair as claimed in claim 5 wherein the pivot arms comprise part of a bell-crank arrangement for moving the back portion about a pivot axis spaced from the said rectangular frame.

8. A lift-recliner chair as claimed in claim 5 wherein the pivot arms extend parallel with and adjacent to respective vertical side panels of the seat portion on an interior side thereof.

9. A lift-recliner chair as claimed in claim 5, wherein the pivot arms extend substantially parallel with and adjacent to respective side panels of the seat portion on an interior side thereof.

10. A lift-recliner chair as claimed in claim 1 wherein the back portion pivots away from the seat portion when the seat portion is moved towards an inclined position.

11. A lift recliner chair as claimed in claim 10 wherein the back portion pivots away from the seat portion when the seat portion is moved by the actuator means to a pre-determined position between the lowered and inclined position of the seat portion.

12. A lift-recliner chair as claimed in claim 1 wherein the actuator means comprises a first actuator for moving the seat portion and a second actuator for moving the back portion.

13. A lift-recliner chair as claimed in claim 12 wherein the first and second actuators are mounted in fixed relation to the base portion.

14. A lift-recliner chair as claimed in claim 12 wherein the first actuator is fixed in relation to the base portion and the second actuator is fixed in relation to the seat portion.

15. A lift-recliner chair as claimed in claim 1 wherein the base portion further comprises a front panel and the front panel is pivotally movable with respect to the side and rear panels of the base portion for movement from a generally vertical position to a generally horizontal position to provide a retractable foot rest.

16. A lift-recliner chair as claimed in claim 15 wherein the actuator means comprises a third actuator fixed in relation to the side panels of the base portion for moving the front panel about a pivot axis.

17. A lift-recliner chair as claimed in claim 15 wherein the said front panel is pivotally moveable with respect to the base portion about a pivot axis corresponding substantially to the position of the seated user'"'"'s knee joint.

18. A lift recliner chair as claimed in claim 15 wherein the pivot axis of the said front panel is coincident with the pivot axis connecting the seat portion to the base portion.

19. A lift-recliner chair as claimed in claim 1 wherein the actuator means comprises a linear actuator.

20. A lift-recliner chair as claimed in claim 1 wherein said actuator means is enclosed within the base portion on the underside of the seat portion.

21. A lift-recliner chair as claimed in claim 1, wherein the seat portion is pivotally connected to the base portion about a first pivot axis and pivotally connected to the back portion about a second pivot axis, and wherein the rear panel of the seat portion is curved having a center of curvature substantially coincident with the first pivot axis.

22. A lift-recliner chair as claimed in claim 1, wherein the side panels of the seat portion and the side panels of the base portion extend substantially vertically in an upright configuration of the chair and substantially parallel with and adjacent to each other on respective sides of the chair.

23. A lift-recliner chair comprising:

a base portion having a pair of upstanding rigid side panels and a rigid rear panel extending between the side panels;

a seat portion pivotally connected to the base portion;

a back portion pivotally connected to the seat portion; and

an actuator for moving the seat portion with respect to the base portion between a fully retracted position and a fully raised position to alter the configuration of the chair, the actuator also for moving the back portion with respect to the seat portion to alter the configuration of the chair, wherein the actuator is located substantially between the side and rear panels of the base portion, wherein the seat portion has a pair of downwardly depending rigid side panels and a rigid rear panel, wherein the side and rear panels of the seat portion and the side and rear panels of the base portion overlap and nest with each other, respectively, in both the fully retracted and fully raised positions to enclose a region containing the actuator in all configurations of the chair including the fully retracted and fully raised positions.