US4830345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring-loaded seat assembly
Assignee: JIUCH JYH INDUSTRIAL Co Ltd
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Filing: 1987-11-19
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Granted: 1989-05-16
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Expires: 2007-11-19
Abstract
Abstract A cushion comprising two seat pieces combined with inside faces facing towards each other, and a plurality of coil spring members which connect the two seat pieces. Each of the seat pieces is a shallow circular plate having a smooth central concavity and includes internally a series of concentrically extending walls, a series of radially extending walls, and a plurality of appropriately spaced tubular walls with an upstanding cylinder formed inside. Each of the coil spring members is closely coiled at its two terminals and encompasses corresponding cylinders of the two seat pieces.
Inventors
- 👤 Shih L. Mar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:42
CPC Classifications
A; A47; A47C; A47C27/00; A47C7/00; A47C7/02; A47C7/14; A63; A63B; A63B22/00; A63B22/18; A63B21/00; A63B21/02; A63B21/023; A63B21/05; A63B2208/00; A63B2208/02; A63B2208/0228; A63B2208/0233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A spring-loaded seat assembly for sitting thereupon, comprising: two spaced apart seat pieces assembled in an inside face to inside face manner, each of said seat pieces having oppositely facing sitting surfaces, and each being a shallow circular plate with a smooth central concavity having internally a series of concentrically extending walls, a series of radially extending walls, and a plurality of tubular walls with respective upstanding cylinders formed therein, said tubular walls being evenly spaced on the concentrically extending walls; and a plurality of coil spring members elastically interconnecting the two seat pieces, each of said coil spring members being closely coiled at both opposite ends thereof for attachment to corresponding cylinders of said two seat pieces.
Claim 2
Dependent Claim
118 words
A spring-loaded seat assembly for sitting thereupon, comprising: two spaced apart seat pieces assembled in an inside face to inside face manner, each of said seat pieces having oppositely facing sitting surfaces, and each being a shallow circular plate with a smooth central concavity having internally a series of concentrically extending walls, a series of radially extending walls, and a plurality of tubular walls with respective upstanding cylinders formed therein, said tubular walls being evenly spaced on the concentrically extending walls; and a plurality of coil spring members elastically interconnecting the two seat pieces, each of said coil spring members being closely coiled at both opposite ends thereof for attachment to corresponding cylinders of said two seat pieces.
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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) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |