US3279749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valve
Assignee: Individual
•
Filing: 1963-12-23
•
Granted: 1966-10-18
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Lambert W Fleckenstein
- 👤 Andrew J Fleckenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:24
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/126
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
A VALVE INCLUDING A VALVE BODY HAVING PASSAGES ADAPTED TO COMMUNICATE WITH ONE ANOTHER THROUGH A VALVE SEAT, A DIAPHRAGM-TYPE CLOSURE SURFACE POSITIONED OVER SAID VALVE SEAT, SAID DIAPHRAGM BEING CAPABLE OF FLEXING MOVEMENT TOWARD AND AWAY FROM SAID SEAT, AND AN OPERATING MEMBER POSITIONED ADJACENT TO SAID DIAPHRAGM ON THE OPPOSITE SURFACE THEREOF FROM SAID VALVE SEAT AND BEING MOUNTED IN SAID VALVE BODY FOR MOVEMENT IN A DIRECTION PARALLEL TO BUT SPACED FROM THE GENERAL PLANE OF SAID VALVE SEAT, SAID MEMBER BEING IN SLIDING ENGAGEMENT WITH SAID OPPOSITE SURFACE, SAID MEMBER HAVING A PROJECTING PORTION WITH A FLAT SURFACE MOVABLE THEREWITH AND FORMED AND ADAPTED TO REMOVE TO AND FROM POSITIONS HOLDING SAID DIAPHRAGM SNUGLY AGAINST SAID SEAT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |