US4045081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reclining chair
Assignee: NHK Spring Co Ltd
•
Filing: 1976-02-13
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Granted: 1977-08-30
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Expires: 1996-02-13
Abstract
Abstract A reclining chair having a seat section slidably connected to a frame section. A rearward end portion of the seat section and a back-rest section are rockably and separably connected to a lower end portion of the back-rest section and to a rearward end portion of the frame section, respectively. A friction brake apparatus for non-stepwise controlling the sliding movement of the seat section is fitted to one side of the seat section, and through the brake apparatus the seat section is connected to the frame section by coupling means.
Inventors
- 👤 Kiyoshi Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:16
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/032; A47C1/03205; A47C1/0325; A47C1/03261; A47C1/03272; A47C1/03274; A47C1/03294
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
359 words
A reclining chair comprising: a seat section having a front end and a rear end, a back-rest section having a lower end rockably and separably connected to the rear end of said seat section; a frame section rockably and separably connected to said back-rest section and including a pair of mutually separably connected side frames and an upwardly extending portion; a friction brake apparatus tilted to one side of said seat section and including a housing, a slidable shaft having one end extended through said housing, a pair of coil springs differing in twisted direction from each other and fitted over said shaft so as to grip said shaft thereby to lock said shaft by frictional force between said coil springs and said shaft, release means rockably fitted over said shaft between said coil springs in a manner allowed to abut on the distal coil ends of mutually opposing end portions of said coil springs and so designed that when said release means has been rocked, said coil springs are twisted back to unlock said shaft, sleeve means received within said housing adjacent to said coil springs so as to cause respective coils of said coil springs to be twisted back uniformly, and bushing means fixed within said housing and having a pair of engaging means engaged with the distal bent coil ends of the other end portions of said coil springs, respectively, so as to prevent them from being rocked, and a pair of inclined shoulders each having a larger angle of inclination than the helical angle of said coil springs and abutting on the distal coil end of said other end portions of said coil springs, respectively; and coupling means for slidably coupling said seat section to said frame section through said brake apparatus, said coupling means including a fitting for fitting said housing of said brake apparatus to said seat section and a coupling mechanism for fixedly coupling an extended end portion of said shaft of said brake apparatus to said frame section, said coupling means including a connector separably fitted into said upwardly extending portion thereby slidably coupling said seat section to said frame section.
Claim 2
Dependent Claim
359 words
A reclining chair comprising: a seat section having a front end and a rear end, a back-rest section having a lower end rockably and separably connected to the rear end of said seat section; a frame section rockably and separably connected to said back-rest section and including a pair of mutually separably connected side frames and an upwardly extending portion; a friction brake apparatus tilted to one side of said seat section and including a housing, a slidable shaft having one end extended through said housing, a pair of coil springs differing in twisted direction from each other and fitted over said shaft so as to grip said shaft thereby to lock said shaft by frictional force between said coil springs and said shaft, release means rockably fitted over said shaft between said coil springs in a manner allowed to abut on the distal coil ends of mutually opposing end portions of said coil springs and so designed that when said release means has been rocked, said coil springs are twisted back to unlock said shaft, sleeve means received within said housing adjacent to said coil springs so as to cause respective coils of said coil springs to be twisted back uniformly, and bushing means fixed within said housing and having a pair of engaging means engaged with the distal bent coil ends of the other end portions of said coil springs, respectively, so as to prevent them from being rocked, and a pair of inclined shoulders each having a larger angle of inclination than the helical angle of said coil springs and abutting on the distal coil end of said other end portions of said coil springs, respectively; and coupling means for slidably coupling said seat section to said frame section through said brake apparatus, said coupling means including a fitting for fitting said housing of said brake apparatus to said seat section and a coupling mechanism for fixedly coupling an extended end portion of said shaft of said brake apparatus to said frame section, said coupling means including a connector separably fitted into said upwardly extending portion thereby slidably coupling said seat section to said frame section.
Claim 3
Dependent Claim
70 words
A reclining chair according to claim 1, wherein said coupling mechanism of said coupling means further includes a pin for pivotally joining said connector to said extended end of said shaft, and a reversed U-shaped guide member fixed to said seat section and having one axial slit formed in an inner wall of said guide member so as to slidably support and guide an extended end of said pivot pin.
Claim 4
Dependent Claim
81 words
A reclining chair according to claim 2, wherein said coupling mechanism of said coupling means further comprises a rockable roller mounted on said pivot pin and received within said guide member so as to abut on an upper wall of said guide member, and a separable clip ring fitting and end portion of said pivot pin extending from said guide slit to said guide slit to prevent said end portion of said pivot pin from falling off from said guide slit.
Claim 5
Dependent Claim
24 words
A reclining chair according to claim 3, wherein yokes respectively connect said connector and said extended end of said shaft to said pivot pin.
Claim 6
Dependent Claim
67 words
A reclining chair according to claim 4, wherein said seat section further includes a pair of side members, a cushion stretched between said side members and a bent connecting rod for connecting said side members at a point apart from said upwardly extending position of each of side members, said connecting rod being bent so as not to touch said cushion when subjected to a person's weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |