Patent US3333036A successfully refreshed from Google Patents.
US3333036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel free method for forming a corrugated hose
Assignee: Eagle Picher Co
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Filing: 1962-11-27
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Granted: 1967-07-25
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Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 John L Maurer
- 👤 Davidson James Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:02
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; B29C; B29C49/00; B29C49/08; B29C49/10; B29C49/14; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A METHOD COMPRISING STRETCHING AN INTERMEDIATE PORTION OF A TUBE OF UNCURED RUBBER TO REDUCE ITS GAUGE WHILE RETAINING THE GAUGE OF THE TUBE TERMINALS SUBSTANTIALLY THE SAME, SUBJECTING THE STRETCHED INTERMEDIATE PORTION TO A MOLDING OPERATION TO FORM AXIALLY-SPACED CIRCUMFERENTIAL CREASES, AXIALLY COMPRESSING THE TUBING ACCORDION FASHION, AND CURING THE RUBBER WHILE THE TUBE IS IN THE COMPRESSED STATE.
Claim 2
Independent Claim
60 words
A METHOD COMPRISING STRETCHING AN INTERMEDIATE PORTION OF A TUBE OF UNCURED RUBBER TO REDUCE ITS GAUGE WHILE RETAINING THE GAUGE OF THE TUBE TERMINALS SUBSTANTIALLY THE SAME, SUBJECTING THE STRETCHED INTERMEDIATE PORTION TO A MOLDING OPERATION TO FORM AXIALLY-SPACED CIRCUMFERENTIAL CREASES, AXIALLY COMPRESSING THE TUBING ACCORDION FASHION, AND CURING THE RUBBER WHILE THE TUBE IS IN THE COMPRESSED STATE.
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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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |