Patent US3108852A successfully refreshed from Google Patents.
US3108852A
Expired / Lapsed
US
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Method of making resilient and flexible cushioning and sealing elements
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1958-03-31
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Granted: 1963-10-29
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:47
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0053; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/26; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/249988
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE HEREIN DESCRIBED METHOD OF MAKING AN ARTICLE HAVING A CORE COMPOSED OF A RESILIENT CELLULAR MATERIAL AND A FLEXIBLE IMPERMEABLE SKIN WHICH COMPRISES ENVELOPING A BODY OF FOAMED THERMOPLASTIC MATERIAL WITH A THIN LAMINATED COVERING CONSISTING OF AN EXTERNAL LAYER COMPOSED OF VULCANIZABLE RUBBER COMPOUND AND AN INTERNAL LAYER COMPOSED OF A VULCANIZABLE SPONGE RUBBER COMPOUND CONTAINING A BLOWING AGENT, ENCLOSING SAID BODY AND ENVELOPING SHEET MATERIAL IN A MOLD AND APPLYING HEAT TO BLOW THE SPONGE RUBBER COMPOUND AND EXPAND THE SAME AND PRESS SAID EXTERNAL LAYER INTO CONFORMITY WITH THE INTERIOR OF THE MOLD CAVITY AND TO PRESS AND SET THE FOAMED CORE TO A SHAPE SUBSTANTIALLY CORRESPONDING TO THE EXTERNAL SHAPE OF THE MOLDED ARTICLE AND TO VULCANIZE THE RUBBER COMPOUNDS.
Claim 2
Dependent Claim
125 words
THE HEREIN DESCRIBED METHOD OF MAKING AN ARTICLE HAVING A CORE COMPOSED OF A RESILIENT CELLULAR MATERIAL AND A FLEXIBLE IMPERMEABLE SKIN WHICH COMPRISES ENVELOPING A BODY OF FOAMED THERMOPLASTIC MATERIAL WITH A THIN LAMINATED COVERING CONSISTING OF AN EXTERNAL LAYER COMPOSED OF VULCANIZABLE RUBBER COMPOUND AND AN INTERNAL LAYER COMPOSED OF A VULCANIZABLE SPONGE RUBBER COMPOUND CONTAINING A BLOWING AGENT, ENCLOSING SAID BODY AND ENVELOPING SHEET MATERIAL IN A MOLD AND APPLYING HEAT TO BLOW THE SPONGE RUBBER COMPOUND AND EXPAND THE SAME AND PRESS SAID EXTERNAL LAYER INTO CONFORMITY WITH THE INTERIOR OF THE MOLD CAVITY AND TO PRESS AND SET THE FOAMED CORE TO A SHAPE SUBSTANTIALLY CORRESPONDING TO THE EXTERNAL SHAPE OF THE MOLDED ARTICLE AND TO VULCANIZE THE RUBBER COMPOUNDS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |