Patent US3310818A successfully refreshed from Google Patents.
US3310818A
Expired / Lapsed
US
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Shock absorbing apparatus
Assignee: Air Inflatable Products Corp
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Filing: 1964-10-22
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Granted: 1967-03-28
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Expires: 1984-10-22
Abstract
No abstract record available.
Inventors
- 👤 William H Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:36
CPC Classifications
A; A63; A63B; A63B6/00; A63B6/02; A63B2225/00; A63B2225/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
PNEUMATIC SHOCK ABSORBING APPARATUS, COMPRISING, IN COMBINATION: A. MEANS FORMING A PLURALITY OF SUPERIMPOSED CHAMBERS OF FLEXIBLE SHEET MATERIAL, (1) EACH OF SAID CHAMBERS HAVING MEANS FORMING AN OPEN AIR PASSAGE IN A WALL THEREOF, (A) SAID PASSAGES DECREASING IN SIZE FOR EACH SUCCESSIVE CHAMBER FROM THE TOP DOWN; B. A MANIFOLD OF FLEXIBLE SHEET MATERIAL IN FLUID COMMUNICATION WITH SAID CHAMBERS, (1) AN AIR INLET ON SAID MANIFOLD, AND (2) AN AIR VALVE OUTLET ON SAID MANIFOLD, (A) SAID VALVE OUTLET BEING NORMALLY CLOSED BUT OPENING ON A SLIGHT INCREASE IN MANIFOLD AIR PRESSURE; AND C. MEANS FOR INFLATING SAID MANIFOLD AND SAID CHAMBERS THROUGH SAID AIR INLET AND SAID AIR PASSAGES.
Claim 2
Dependent Claim
113 words
PNEUMATIC SHOCK ABSORBING APPARATUS, COMPRISING, IN COMBINATION: A. MEANS FORMING A PLURALITY OF SUPERIMPOSED CHAMBERS OF FLEXIBLE SHEET MATERIAL, (1) EACH OF SAID CHAMBERS HAVING MEANS FORMING AN OPEN AIR PASSAGE IN A WALL THEREOF, (A) SAID PASSAGES DECREASING IN SIZE FOR EACH SUCCESSIVE CHAMBER FROM THE TOP DOWN; B. A MANIFOLD OF FLEXIBLE SHEET MATERIAL IN FLUID COMMUNICATION WITH SAID CHAMBERS, (1) AN AIR INLET ON SAID MANIFOLD, AND (2) AN AIR VALVE OUTLET ON SAID MANIFOLD, (A) SAID VALVE OUTLET BEING NORMALLY CLOSED BUT OPENING ON A SLIGHT INCREASE IN MANIFOLD AIR PRESSURE; AND C. MEANS FOR INFLATING SAID MANIFOLD AND SAID CHAMBERS THROUGH SAID AIR INLET AND SAID AIR PASSAGES.
References Cited (Backward Citations)
US2245909A
Cited
US2906366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |