Patent US5713632A successfully refreshed from Google Patents.
US5713632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel chair having a body-fit structure
Assignee: Individual
•
Filing: 1997-01-03
•
Granted: 1998-02-03
•
Expires: 2017-01-03
Abstract
Abstract A swivel chair having a body-fit structure is provided with a movable seat, a chair frame, an adjustable stud, a seat cushion split into two arched halves, springs, two sliding blocks, two fixing plates, and an extensible shade. The movable seat having octopus-like legs extending radiatedly provides the supporting footing at the bottom. The two arched halves of the seat cushion are supported by the fixing plates and the sliding blocks. The fixing plates are fixedly secured to the bottom of the two arched halves of the seat cushion, and engaged with the sliding blocks by inserting pins at one side and springs at the other side. By means of the adjustable stud passing through the two sliding blocks gliding on a groove track of the chair frame, the distance between the two arched halves of the seat cushion can be adjusted to best suit the hips of different people according to the physical shape of a human body so that a user can sit comfortably a long time on it without feeling tired or hurting the muscle of the person.
Inventors
- 👤 Ching-Chuan Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:41
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/024; A47C7/029; A47C7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
378 words
A swivel chair having a body-fit structure, comprising a movable seat stand, a chair frame, an adjustable stud, a seat cushion, springs, sliding blocks, and fixing plates wherein: the movable seat stand has a plurality of radially extending legs, each leg having a moving wheel disposed thereon to provide a supporting footing for the swivel chair, and a central conical axle disposed at a top; the chair frame is mounted on the axle of the movable seat stand and is formed with a rectangular hollow chamber, the chamber having a locating hole disposed at one lateral side and an U-shaped groove disposed at an opposite lateral side, a middle section of said rectangular hollow chamber having a central axle hole and an interior front lateral side thereof having a groove track; a seat back supported by a backbone extending from a rear of the chair frame; the adjustable stud rotatably mounted on the chair frame, the adjustable stud having screw threads disposed on left and right sections thereof and is provided with a pivoting post smaller in diameter than said adjustable stud at one end and an adjusting wheel at an opposite end; a plurality of sliding blocks, each sliding block located on the chair frame and threadingly engaged with one of the left and right sections of the adjustable stud, each sliding block comprising a triangular plate having two upwardly extending portions with through holes disposed thereon, and a first mounting seat disposed on one side; one of the fixing plates pivotally connected to each sliding block, each fixing plate comprising a triangular plate provided with two pin holes, a pin passing through the two pin holes and the through holes of one of the sliding blocks, and a second mounting seat on each fixing plate; the seat cushion comprising a pair of arched seat halves, one arched seat half attached to each fixing plate, each arched seat half being resiliently supported by a spring extending between first and second mounting seats; and, a resilient cover disposed over exteriors of the arched seat halves, whereby rotation of the adjustable stud, varies a distance between the two arched seat halves of the seat cushion to suit the hips of different people in accordance with the physical shape thereof.
Claim 2
Dependent Claim
378 words
A swivel chair having a body-fit structure, comprising a movable seat stand, a chair frame, an adjustable stud, a seat cushion, springs, sliding blocks, and fixing plates wherein: the movable seat stand has a plurality of radially extending legs, each leg having a moving wheel disposed thereon to provide a supporting footing for the swivel chair, and a central conical axle disposed at a top; the chair frame is mounted on the axle of the movable seat stand and is formed with a rectangular hollow chamber, the chamber having a locating hole disposed at one lateral side and an U-shaped groove disposed at an opposite lateral side, a middle section of said rectangular hollow chamber having a central axle hole and an interior front lateral side thereof having a groove track; a seat back supported by a backbone extending from a rear of the chair frame; the adjustable stud rotatably mounted on the chair frame, the adjustable stud having screw threads disposed on left and right sections thereof and is provided with a pivoting post smaller in diameter than said adjustable stud at one end and an adjusting wheel at an opposite end; a plurality of sliding blocks, each sliding block located on the chair frame and threadingly engaged with one of the left and right sections of the adjustable stud, each sliding block comprising a triangular plate having two upwardly extending portions with through holes disposed thereon, and a first mounting seat disposed on one side; one of the fixing plates pivotally connected to each sliding block, each fixing plate comprising a triangular plate provided with two pin holes, a pin passing through the two pin holes and the through holes of one of the sliding blocks, and a second mounting seat on each fixing plate; the seat cushion comprising a pair of arched seat halves, one arched seat half attached to each fixing plate, each arched seat half being resiliently supported by a spring extending between first and second mounting seats; and, a resilient cover disposed over exteriors of the arched seat halves, whereby rotation of the adjustable stud, varies a distance between the two arched seat halves of the seat cushion to suit the hips of different people in accordance with the physical shape thereof.
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) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |