Patent US5131718A successfully refreshed from Google Patents.
US5131718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable chair
Assignee: Flux Enterprises Inc
•
Filing: 1991-01-31
•
Granted: 1992-07-21
•
Expires: 2011-01-31
Abstract
Abstract A chair is provided with a seat which is rotatable and translatable with respect to its pedestal. Specifically, the chair includes a support pinion on top of the pedestal and a bearing surface mounted on the underside of the seat. The pinion has bearings on its upper surface which contact the bearing surface to support the seat. The seat also has a pair of racks mounted on it, the racks including recesses which interlock with complementary bosses on the support pinion to inhibit movement of the seat with respect to the pedestal. A pair of grips are attached, one to each rack, such that lifting either grip disengages both racks from the pinion allowing the seat to translate and rotate via the bearings on the support pinion and the bearing surface.
Inventors
- 👤 Jack Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:15
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/18; A47C1/00; A47C1/02; A47C1/022; A47C1/023; A47C7/00; A47C7/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
132 words
A chair comprising: a seat; support means disposed adjacent said seat for supporting said seat in a manner to allow translation and rotation of said seat with respect to said support means; locking means disposed adjacent said support means for acting between said seat and said support means, said locking means being movable between a released position in which said seat is freed to permit simultaneous rotational and translational movement of said seat with respect to said support means and an engaged position in which said seat is locked against such rotational and translational movement; biasing means disposed adjacent said locking means for biasing said locking means toward said engaged position; and a single release means disposed adjacent said locking means for moving said locking means between said engaged and release positions.
Claim 2
Dependent Claim
132 words
A chair comprising: a seat; support means disposed adjacent said seat for supporting said seat in a manner to allow translation and rotation of said seat with respect to said support means; locking means disposed adjacent said support means for acting between said seat and said support means, said locking means being movable between a released position in which said seat is freed to permit simultaneous rotational and translational movement of said seat with respect to said support means and an engaged position in which said seat is locked against such rotational and translational movement; biasing means disposed adjacent said locking means for biasing said locking means toward said engaged position; and a single release means disposed adjacent said locking means for moving said locking means between said engaged and release positions.
Claim 3
Dependent Claim
49 words
A chair according to claim 1 wherein said locking means comprises first and second interlocking members, said first interlocking member being mounted on said support means and said second interlocking member being mounted on said seat; said single release means operating to bring said interlocking members out of engagement.
Claim 4
Dependent Claim
38 words
A chair according to claim 2 wherein said first interlocking member comprises a pinion with an array of bosses; and said second interlocking member comprises a pair of hinged racks, said racks having recesses complementary to said bosses.
Claim 5
Dependent Claim
19 words
A chair according to claim 3 wherein said support means includes a pedestal upon which said pinion is mounted.
Claim 6
Dependent Claim
12 words
A chair according to claim 4 wherein said recesses include chamfered edges.
Claim 7
Dependent Claim
43 words
A chair according to claim 4 wherein said release means comprises two handles, each handle being connected to a different rack and being operable with the other said handle such that movement of either said handle disengages both said racks from said bosses.
Claim 8
Dependent Claim
31 words
A chair according to claim 4 wherein said support means includes bearing means mounted on said pinion to facilitate the rotation and translation of said seat with respect to said pedestal.
Claim 9
Dependent Claim
21 words
A chair according to claim 4 wherein said support means includes a tray mounted on said seat to receive said pinion.
Claim 10
Dependent Claim
38 words
A chair according to claim 8 wherein said support means further includes a plate slidably mounted within said tray, said plate being adapted to receive said pinion and to facilitate the rotation thereof with respect to said tray.
Claim 11
Dependent Claim
144 words
A kit for converting a chair having a seat and a pedestal to allow the translation and rotation of said seat with respect to said pedestal, the kit comprising: support means including first and second interlocking members, said first interlocking member being adapted for mounting on said pedestal and said second interlocking member being adapted for mounting on said seat, said support means acting between said seat and said pedestal in a manner to allow simultaneous translational and rotational movement of said seat with respect to said pedestal; biasing means for moving said interlocking members into an engaged position in which the translational and rotational movement is inhibited; and a single release means for operating against said biasing means to move said first and second interlocking members into a released position in which said seat is freed to permit said rotational and translational movement.
Claim 12
Dependent Claim
144 words
A kit for converting a chair having a seat and a pedestal to allow the translation and rotation of said seat with respect to said pedestal, the kit comprising: support means including first and second interlocking members, said first interlocking member being adapted for mounting on said pedestal and said second interlocking member being adapted for mounting on said seat, said support means acting between said seat and said pedestal in a manner to allow simultaneous translational and rotational movement of said seat with respect to said pedestal; biasing means for moving said interlocking members into an engaged position in which the translational and rotational movement is inhibited; and a single release means for operating against said biasing means to move said first and second interlocking members into a released position in which said seat is freed to permit said rotational and translational movement.
Claim 13
Dependent Claim
36 words
A kit according to claim 10 wherein said first interlocking member comprises a pinion with an array of bosses; said second interlocking member comprises a pair of racks, said racks having recesses complementary to said bosses.
Claim 14
Dependent Claim
47 words
A kit according to claim 11 wherein said release means comprises two handles, each said handle being connected to a different rack and being operable with the other said handle such that movement of either said handle moves both said racks out of engagement with said pinion.
Claim 15
Dependent Claim
32 words
A kit according to claim 12 wherein said support means further includes bearing means mounted on said pinion to facilitate the rotation and translation of said seat with respect to said pedestal.
Claim 16
Dependent Claim
22 words
A kit according to claim 13 wherein said support means also includes a tray mounted on said seat to receive said pinion.
Claim 17
Dependent Claim
38 words
A kit according to claim 14 wherein said support means further includes a plate slidably mounted within said tray, said plate being adapted to receive said pinion and to facilitate the rotation thereof with respect to said tray.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-21 | 1996-01-20 | 1996-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-21 | 2000-01-20 | 2000-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-21 | 2004-01-20 | 2004-07-21 | $7700.00 | Window Closed / Lapsed |