Patent US3137489A successfully refreshed from Google Patents.
US3137489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat spring structure
Assignee: Van Dresser Specialty Corp
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Filing: 1963-05-09
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Granted: 1964-06-16
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Clair S Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:59
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A SEAT SPRING STRUCTURE, COMPRISING A SEAT FRAME HAVING SPACED SUBSTANTIALLY PARALLEL LONGITUDINALLY EXTENDING FRONT AND REAR MEMBERS AND HAVING SPACED SUBSTANTIALLY PARALLEL TRANSVERSELY EXTENDING SIDE MEMBERS TERMINALLY SECURED TO SAID LONGITUDINALLY EXTENDING MEMBERS AT OPPOSITE ENDS THEREOF, TRANSVERSELY EXTENDING METAL STRIPS WELDED TO AND EXTENDING LENGTHWISE OF SAID TRANSVERSELY EXTENDING MEMBERS INTERMEDIATE THE ENDS THEREOF, HORIZONTALLY DISPOSED METAL PLATES WELDED TO THE REAR LONGITUDINALLY EXTENDING MEMBER AND TO SAID TRANSVERSELY EXTENDING SIDE MEMBERS, AND A SINGLE UPWARDLY ARCHED LAYER OF LOAD SUPPORTING SPRING WIRES EXTENDING LONGI-
Claim 2
Dependent Claim
87 words
A SEAT SPRING STRUCTURE, COMPRISING A SEAT FRAME HAVING SPACED SUBSTANTIALLY PARALLEL LONGITUDINALLY EXTENDING FRONT AND REAR MEMBERS AND HAVING SPACED SUBSTANTIALLY PARALLEL TRANSVERSELY EXTENDING SIDE MEMBERS TERMINALLY SECURED TO SAID LONGITUDINALLY EXTENDING MEMBERS AT OPPOSITE ENDS THEREOF, TRANSVERSELY EXTENDING METAL STRIPS WELDED TO AND EXTENDING LENGTHWISE OF SAID TRANSVERSELY EXTENDING MEMBERS INTERMEDIATE THE ENDS THEREOF, HORIZONTALLY DISPOSED METAL PLATES WELDED TO THE REAR LONGITUDINALLY EXTENDING MEMBER AND TO SAID TRANSVERSELY EXTENDING SIDE MEMBERS, AND A SINGLE UPWARDLY ARCHED LAYER OF LOAD SUPPORTING SPRING WIRES EXTENDING LONGI-
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |