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US4607883A Expired / Lapsed US ⏱️ 0.0 years remaining

Reclining mechanism for easy chair

Assignee: Individual
•
Filing: 1985-08-23
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Granted: 1986-08-26
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Expires: 2005-08-23
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Abstract

Abstract A reclining mechanism for easy chair or swivel chair comprising a guide tube and a jack stay, wherein the guide tube is disposed horizontally along the longitudinal direction of the chair in the center above the upper portion of the leg base, having the forward portion thereof extended upwardly in an appropriate angle of elevation. The obliquely extended tube is provided with a guide slot which is formed along the longitudinal line on the upper side thereof and inside the tube at one side wall thereof is mounted a spring plate. The jack stay has its upper end firmly secured to the lower portion of the seat member or seat frame while its front edge being pivotally connected to a guide bar which projects into the guide slot. The guide bar is provided at the lower end thereof with a sliding block which is received and movable in the extended tube. The spring plate constantly presses against the sliding block so as to slow down the movement of the sliding block. In an easy chair adapted with the reclining mechanism of the present invention, the two sides of the back rest or back frame are connected pivotally each at the lower end thereof to an armrest rod which is in fixed connection with the chair seat at an appropriate location on each side by a pivot pin, whereas the rear end of the chair seat remains pivotally attached to the lower end of the back rest with the front end thereof being supported on the guide tube by means of the jack stay. Therefore, in using the easy chair or swivel chair having reclining mechanism of the present invention, when the backrest thereof is pivoted into a reclining position or a forwardly inclined position opposite to the lying-down position or sitting position of the body of the chair occupant, the seat pad will also be involved and moved forwardly or backwardly. During this movement, the guide bar and the sliding block will likewise be moved in the guide tube, and being urged by the pressure of the spring plate, both the movement of the chair seat and the reclination or inclination of the backrest will thereby be slowed down.

Inventors

  • 👤 Huang Y. Tzu-Chun

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 16:53
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/022; A47C1/024; A47C1/027; A47C1/031; A47C1/032; A47C1/03255; A47C3/00; A47C3/18

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 173 words
A reclining mechanism for easy chair or swivel chair of the type including a leg base and a chair seat, said mechanism comprising a guide tube firmly secured above the leg base, a jack stay projected from beneath the chair seat; said guide tube being slightly tilted upward at the front portion thereof to form an obliquely extended tube, said extended tube having a guide slot formed on the upper side thereof, a guide bar pivotably connected with the lower end of said jack stay and adapted to pass through said guide slot, said guide bar being provided at the lower end thereof with a sliding member which is contained and slidably movable in said extended tube, a space formed between said sliding member and an inner wall of one side of said obliquely extended tube, and an arc-shaped spring plate mounted on the inner side wall of said extended tube, said spring constantly pressing against said sliding member so as to exert a slow-down effect on the movement of said sliding member.
Claim 2
Dependent Claim 173 words
A reclining mechanism for easy chair or swivel chair of the type including a leg base and a chair seat, said mechanism comprising a guide tube firmly secured above the leg base, a jack stay projected from beneath the chair seat; said guide tube being slightly tilted upward at the front portion thereof to form an obliquely extended tube, said extended tube having a guide slot formed on the upper side thereof, a guide bar pivotably connected with the lower end of said jack stay and adapted to pass through said guide slot, said guide bar being provided at the lower end thereof with a sliding member which is contained and slidably movable in said extended tube, a space formed between said sliding member and an inner wall of one side of said obliquely extended tube, and an arc-shaped spring plate mounted on the inner side wall of said extended tube, said spring constantly pressing against said sliding member so as to exert a slow-down effect on the movement of said sliding member.

References Cited (Backward Citations)

US2512353A Cited
DE2359440A1 Cited
US3947069A Cited
US4068888A Cited
US4174088A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-08-25 1990-02-24 1990-08-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-08-25 1994-02-24 1994-08-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-08-25 1998-02-24 1998-08-26 $7700.00 Window Closed / Lapsed

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