US3282171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm device
Assignee: HOCHDRUCK DICHTUNGS FABRIK SCH
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Filing: 1965-03-23
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Granted: 1966-11-01
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Expires: 1985-03-23
Abstract
No abstract record available.
Inventors
- 👤 Tuckmantel Hans-Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:17
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/10; F16; F16J; F16J3/00; F16J3/02; F16K; F16K31/00; F16K31/12; F16K31/126; F16K31/1262; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0633
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A DIAPHRAGM COMPRISING A GENERALLY FLEXIBLE CIRCULAR BODY HAVING INNER AND OUTER PERIPHERAL PORTIONS, SAID PERIPHERAL PORTIONS OCCUPYING AXIALLY SPACED PARALLEL PLANES, A NON-DEFORMABLE TRANSITION PORTION ADJACENT AND INCLINED RELATIVE TO EACH OF SAID INNER AND OUTER PERIPHERAL PORTIONS, SAID TRANSITION PORTIONS BEING DISPOSED TO THE SAME SIDE OF THE PLANE OF THE ADJACENT PERIPHERAL PORTION, ONE OF SAID TRANSITION PORTIONS MERGING INTO AN ARCUATE PORTION HAVING IDENTICAL ENTRANCE AND EXIT ANGLES, AND A FRUSTO-CONICAL PORTION BETWEEN SAID ARCUATE PORTION AND THE OTHER OF SAID TRANSITION PORTIONS, WHEREBY SAID ARCUATE PORTION IS CAPABLE FOR MOVEMENT BETWEEN SAID TRANSITION PORTIONS WHILE MAINTAINING SAID IDENTICAL ANGULAR RELATIONSHIP.
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |