Patent US3137251A successfully refreshed from Google Patents.
US3137251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Merchandise racks
Assignee: Southern Spring Bed Co
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Filing: 1961-02-13
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Granted: 1964-06-16
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Expires: 1981-02-13
Abstract
No abstract record available.
Inventors
- 👤 Jr John Brittain Pendergrast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:04
CPC Classifications
A; A47; A47F; A47F5/00; A47F5/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
166 words
IN A MERCHANDISE RACK, AN UPSTANDING SUPPORT HAVING A PLURALITY OF SPACED SHELF DEPRESSIONS FORMED THEREON, MEANS FOR RETAINING SAID SUPPORT IN AN UPSTANDING POSITION, AT LEAST ONE SHELF PIVOTED ON SAID RACK, A SHELF SUPPORT ON SAID RACK COMPRISING A FIRST MEMBER ON ONE SIDE OF SAID UPSTANDING SUPPORT AND A SECOND MEMBER ON THE OTHER SIDE OF SAID SUPPORT, AT LEAST ONE OF SAID FIRST AND SECOND MEMBERS BEING IN ONE OF SHELF DEPRESSIONS, A APRING ASSOCIATED WITH SAID FIRST AND SECOND MEMBERS AND HAVING ONE END THEREOF FASTENED BETWEEN SAID FIRST AND SECOND MEMBERS AND HAVING THE OTHER END THEREOF FASTENED TO SAID SHELF, SAID SPRING BEING TENSIONED BETWEEN SAID FIRST AND SECOND MEMBERS AND THE SHELF TO CREATE A CLAMPING ACTION ABOUT SAID UPSTANDING SUPPORT, SAID SPRING BEING FURTHER TENSIONED IN THE DOWNWARD POSITION OF SAID SHELF TO RETURN SAID SHELF WHEN EMPTY AND TO EXERT ADDITIONAL PRESSURE BETWEEN SAID FIRST AND SECOND MEMBERS THEREBY TO RETAIN THE SHELF SUPPORT IN POSITION.
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 |