Patent US461578A successfully refreshed from Google Patents.
US3572218A
Expired / Lapsed
US
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Connecting means between diaphragm and actuator rod
Assignee: Briggs and Stratton Corp
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Filing: 1968-03-14
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Granted: 1971-03-23
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Expires: 1988-03-14
Abstract
Abstract A HERMETICALLY TIGHT CONNECTION BETWEEN A FLEXIBLE DIAPHRAGM AND AN ACTUATOR ROD WHICH PASSES THROUGH A HOLE IN THE DIAPHRAGM IS PROVIDED BY CLAMPING THE DIAPHRAGM BETWEEN A WASHER WHICH BEARS AGAINST A SHOULDER ON THE ROD AND A CUP-SHAPED RETAINING MEMBER FORCED ONTO THE ROD AND SECURED IN PLACE BY FINGERS WHICH BITE INTO THE ROD. A COIL SPRING SEATED IN THE CUP-SHAPED RETAINING MEMBER BIASES THE DIAPHRAGM IN ONE DIRECTION.
Inventors
- 👤 Herbert A Gumtow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:34
CPC Classifications
F; F02; F02M; F02M1/00; F02M1/08; F02M1/14; Y; Y10; Y10S; Y10S411/00; Y10S411/918
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |