US2839440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an air cushion assembly
Assignee: Aerojet Rocketdyne Holdings Inc
•
Filing: 1956-07-23
•
Granted: 1958-06-17
•
Expires: 1976-07-23
Abstract
No abstract record available.
Inventors
- 👤 Paul O Pfeiffer
- 👤 Charles O Slemmons
- 👤 Julius R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:01
CPC Classifications
B; B29; B29D; B29D22/00; B29D22/02; B29D22/023; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1005; Y10T156/1028; Y10T156/1033
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
THE METHOD OF MAKING AN ELONGATED INFLATABLE CUSHION WHICH COMPRISES FORMING CORD REINFORCED SHEET MATERIAL INTO AN OPEN ENDED MULTIPLE LAYER TUBE, SUPPORTING THE TUBE IN SUBSTANTIALLY CYLINDRICAL FORM, TRIMMING THE CORD MATERIAL LAYERS ONE AT A TIME AT ONE END OF THE CYLINDRICAL TUBE TO PROVIDE STAGGERED END EDGES ON THE CORD MATERIAL LAYERS, FLATTENING THE TUBE AND APPLYING BINDING STRIPS ACROSS THE STAGGERED END EDGES OF THE FLATTENED TUBE, THE BINDING STRIPS EACH EXTENDING OVER THE TUBE END AND ACROSS A PLURALITY OF SAID STAGGERED END EDGES.
References Cited (Backward Citations)
US2208540A
Cited
US2482072A
Cited
US2575764A
Cited
US2628652A
Cited
US2742301A
Cited
US2743480A
Cited
US2703770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |