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Patent US3263247A successfully refreshed from Google Patents.
US3263247A
Expired / Lapsed
US
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Headed hollow body support
Assignee: Individual
•
Filing: 1964-03-03
•
Granted: 1966-08-02
•
Expires: 1984-03-03
Abstract
No abstract record available.
Inventors
- 👤 Richard R Knittel
- 👤 Charles H Burnette
- 👤 Ronald H Beckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; Y; Y10; Y10S; Y10S297/00; Y10S297/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A LOAD SUPPORTING, BELLOWS SPRING COMPRISING: A HOLLOW BODY FORMED OF A PLURALITY OF INTEGRALLY INTERCONNECTED INDIVIDUAL BELLOWS FORMING A RESILIENT SUPPORT; EACH OF SAID BELLOWS HAVING A RESILIENT HINGE AT ITS OUTER PERIPHERAL EXTREMITY TO COLLECTIVELY PROVIDE SUPPORT TO SAID BODY; THE INTERIOR OF SAID BODY BEING VENTED TO THE ATMOSPHERE TO PREVENT SIGNIFICANT PNEUMATIC INTERFERENCE; ONE END OF SAID SPRING HAVING AN ENLARGE HEAD EXTENDING RADIALLY BEYOND THE BELLOWS, BEING POLYGONAL IN CROSSSECTIONAL CONFIGURATION, AND HAVING A PERIPHERAL CONTACT SURFACE OF SUBSTANTIAL HEIGHT; AND THE OTHER END OF SAID SPRING HAVING A POLYGONAL HEAD OF SMALLER SIZE, AND WITH PERIPHERAL CONTACT SURFACE OF SUBSTANTIAL HEIGHT TO INTERFIT WITH THE ENLARGED HEADS OF ADJACENT INVERTED SPRINGS.
Claim 2
Dependent Claim
117 words
A LOAD SUPPORTING, BELLOWS SPRING COMPRISING: A HOLLOW BODY FORMED OF A PLURALITY OF INTEGRALLY INTERCONNECTED INDIVIDUAL BELLOWS FORMING A RESILIENT SUPPORT; EACH OF SAID BELLOWS HAVING A RESILIENT HINGE AT ITS OUTER PERIPHERAL EXTREMITY TO COLLECTIVELY PROVIDE SUPPORT TO SAID BODY; THE INTERIOR OF SAID BODY BEING VENTED TO THE ATMOSPHERE TO PREVENT SIGNIFICANT PNEUMATIC INTERFERENCE; ONE END OF SAID SPRING HAVING AN ENLARGE HEAD EXTENDING RADIALLY BEYOND THE BELLOWS, BEING POLYGONAL IN CROSSSECTIONAL CONFIGURATION, AND HAVING A PERIPHERAL CONTACT SURFACE OF SUBSTANTIAL HEIGHT; AND THE OTHER END OF SAID SPRING HAVING A POLYGONAL HEAD OF SMALLER SIZE, AND WITH PERIPHERAL CONTACT SURFACE OF SUBSTANTIAL HEIGHT TO INTERFIT WITH THE ENLARGED HEADS OF ADJACENT INVERTED SPRINGS.
References Cited (Backward Citations)
US1648951A
Cited
US2150747A
Cited
US2433012A
Cited
US2878012A
Cited
US2979739A
Cited
US2897520A
Cited
US3201111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |