Patent US3581365A successfully refreshed from Google Patents.
US3581365A
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US
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Method of making valve element with molded resilient tip
Assignee: Industrial Electronic Rubber Co
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Filing: 1968-08-26
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Granted: 1971-06-01
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Expires: 1988-08-26
Abstract
Abstract THE TIP IS FORMED BY MOLDING RUBBER ABOUT THE HEAD OF A METAL PIN, THE PIN IS FORCED INTO AN END SOCKET OF AN ELONGATED BODY TO COMPLETE THE ELEMENT. THE PIN HAS A SHOULDER UNDER THE HEAD WHICH SPACES THE BOTTOM OF THE HEAD FROM THE BOTTOM OF THE MOLD CAVITY, SO THAT SOME RUBBER IS UNDER THE HEAD FOR MECHANICAL LOCKING, AND THE SHOULDER SEALS THE CAVITY OPENING THROUGH WHICH THE EXTENSION OF THE PIN PROJECTS FOR EXPOSURE IN THE FINISHED TIP PART. THE SEPARATELY FORMED ELEMENT BODY CAN BE MADE OF METAL OR PLALSTIC.
Inventors
- 👤 Myles N Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:47
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C45/14336; B29C45/14426; F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38; F16K1/385; B29L; B29L2031/00; B29L2031/748; B29L2031/7506; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |