Patent US3147998A successfully refreshed from Google Patents.
US3147998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back rest
Assignee: Hamilton Cosco Inc
•
Filing: 1962-09-10
•
Granted: 1964-09-08
•
Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Earl F Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:18
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A BACK REST FOR A CHAIR OR THE LIKE, (A) A TUBULAR FRAME CONNECTED TO SAID CHAIR OR THE LIKE AND HAVING A PAIR OF LATERALLY SPACED UPRIGHT STRETCHES INTERCONNECTED BY A PAIR OF VERTICALLY SPACED TRANSVERSELY EXTENDING MEMBERS, (B) THE ADJACENT FACES OF SAID MEMBERS HAVING PAIRS OF TRANSVERSELY SPACED SLOTS FORMED THEREIN, (C) A PLURALITY OF PAIRS OF SPLATS CONNECTED TO SAID MEMBERS AND FORMING A RESILIENT AREA OF SUPPORT, (D) THE SPLATS IN EACH OF SAID PAIRS OF SPLATS COMPRISING GENERALLY PLANAR STRIPS OF SHEET-METAL HAVING OPPOSITELY CURVED, INTERSECTING, ARCUATE CONFIGURATIONS AND PROVIDED WITH PAIRS OF FINGERS AT THEIR ENDS RECEIVED IN SAID PAIRS OF TRANSVERSELY SPACED SLOTS, AND (E) SHOULDERS ADJACENT THE FINGERS ON EACH OF SAID SPLATS ABUTTING THE ADJACENT FACES OF SAID PAIR OF MEMBERS ADJACENT THE SLOTS FORMED THEREIN.
Claim 2
Dependent Claim
137 words
IN A BACK REST FOR A CHAIR OR THE LIKE, (A) A TUBULAR FRAME CONNECTED TO SAID CHAIR OR THE LIKE AND HAVING A PAIR OF LATERALLY SPACED UPRIGHT STRETCHES INTERCONNECTED BY A PAIR OF VERTICALLY SPACED TRANSVERSELY EXTENDING MEMBERS, (B) THE ADJACENT FACES OF SAID MEMBERS HAVING PAIRS OF TRANSVERSELY SPACED SLOTS FORMED THEREIN, (C) A PLURALITY OF PAIRS OF SPLATS CONNECTED TO SAID MEMBERS AND FORMING A RESILIENT AREA OF SUPPORT, (D) THE SPLATS IN EACH OF SAID PAIRS OF SPLATS COMPRISING GENERALLY PLANAR STRIPS OF SHEET-METAL HAVING OPPOSITELY CURVED, INTERSECTING, ARCUATE CONFIGURATIONS AND PROVIDED WITH PAIRS OF FINGERS AT THEIR ENDS RECEIVED IN SAID PAIRS OF TRANSVERSELY SPACED SLOTS, AND (E) SHOULDERS ADJACENT THE FINGERS ON EACH OF SAID SPLATS ABUTTING THE ADJACENT FACES OF SAID PAIR OF MEMBERS ADJACENT THE SLOTS FORMED THEREIN.
References Cited (Backward Citations)
US2566622A
Cited
US2851090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |