US3145020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring assisted foam cushion construction
Assignee: Individual
•
Filing: 1963-08-26
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Granted: 1964-08-18
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Calla Nick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:33
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
IN A SPRING ASSISTED FOAM CUSHION CONSTRUCTION, A FIRST FOAM ELEMENT HAVING UPPER AND LOWER SURFACES, THERE BEING A FIRST PLURALITY OF ANNULAR RECESSES EXTENDING FROM SAID LOWER SURFACE INTO THE BODY OF SAID FIRST FOAM ELEMENT TO FORM A PLURALITY OF SUBSTANTIALLY CYLINDRICAL PROTUBERANCES; MEANS INTERCONNECTING SAID ANNULAR RECESSES; A CORRESPONDING SECOND FOAM ELEMENT HAVING UPPERR AND LOWER SURFACES, THERE BEING A SECOND PLURALITY OF RECESSES EXTENDING FROM SAID UPPER SURFACE OF SAID SECOND FOAM ELEMENT CORRESPONDING IN LOCATION TO SAID FIRST PLURALITY OF ANNULAR RECESSES, TO FORM A SECOND PLURALITY OF CYLINDRICAL PROTUBERANCES AND A PLURALITY OF DETACHED AREAS ON SAID LAST MENTIONED UPPER SURFACE, AND A SPRING ELEMENT INCLUDING A PLURALITY OF COILS CORRESPONDING TO THE NUMBER OF ANNULAR RECESSES IN EACH OF SAID FIRST AND SECOND FOAM ELEMENTS, SAID COILS EACH BEING DISPOSED PARTIALLY WITHIN AN INDIVIDUAL ANNULAR RECESS IN EACH OF SAID FIRST AND SECOND FOAM ELEMENTS, SAID COILS HAVING A RELATIVELY UNSTRESSED LENGTH GREATER THAN THE COMBINED DEPTH OF THE RECESSES IN WHICH IT IS DISPOSED, SAID FIRST AND SECOND FOAM ELEMENTS BEING CEMENTED TOGETHER OVER THE LOWER SURFACE OF SAID FIRST FOAM ELEMENT AND THE UPPER SURFACE OF SAID SECOND FOAM ELEMENT TO PRESTRESS SAID COILS.
Claim 2
Dependent Claim
203 words
IN A SPRING ASSISTED FOAM CUSHION CONSTRUCTION, A FIRST FOAM ELEMENT HAVING UPPER AND LOWER SURFACES, THERE BEING A FIRST PLURALITY OF ANNULAR RECESSES EXTENDING FROM SAID LOWER SURFACE INTO THE BODY OF SAID FIRST FOAM ELEMENT TO FORM A PLURALITY OF SUBSTANTIALLY CYLINDRICAL PROTUBERANCES; MEANS INTERCONNECTING SAID ANNULAR RECESSES; A CORRESPONDING SECOND FOAM ELEMENT HAVING UPPERR AND LOWER SURFACES, THERE BEING A SECOND PLURALITY OF RECESSES EXTENDING FROM SAID UPPER SURFACE OF SAID SECOND FOAM ELEMENT CORRESPONDING IN LOCATION TO SAID FIRST PLURALITY OF ANNULAR RECESSES, TO FORM A SECOND PLURALITY OF CYLINDRICAL PROTUBERANCES AND A PLURALITY OF DETACHED AREAS ON SAID LAST MENTIONED UPPER SURFACE, AND A SPRING ELEMENT INCLUDING A PLURALITY OF COILS CORRESPONDING TO THE NUMBER OF ANNULAR RECESSES IN EACH OF SAID FIRST AND SECOND FOAM ELEMENTS, SAID COILS EACH BEING DISPOSED PARTIALLY WITHIN AN INDIVIDUAL ANNULAR RECESS IN EACH OF SAID FIRST AND SECOND FOAM ELEMENTS, SAID COILS HAVING A RELATIVELY UNSTRESSED LENGTH GREATER THAN THE COMBINED DEPTH OF THE RECESSES IN WHICH IT IS DISPOSED, SAID FIRST AND SECOND FOAM ELEMENTS BEING CEMENTED TOGETHER OVER THE LOWER SURFACE OF SAID FIRST FOAM ELEMENT AND THE UPPER SURFACE OF SAID SECOND FOAM ELEMENT TO PRESTRESS SAID COILS.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |