US3588041A
Expired / Lapsed
US
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Exhalation valve
Assignee: Linde Sverige AB
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Filing: 1968-10-29
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Granted: 1971-06-28
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Expires: 1988-10-29
Abstract
Abstract AN EXHALATION VALVE FOR A BREATHING APPARATUS HAVING A VALVE MEMBER URGED AGAINST A VALVE SEAT BY AN ADJUSTABLE RETAINING FORCE. A MECHANISM IS PROVIDED TO ADJUST THE RELATIVE POSITION BETWEEN THE VALVE MEMBER AND THE VALVE SEAT INDEPENDENTLY OF THE RETAINING FORCE.
Inventors
- 👤 Dag Olof Alfred Johannisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:35
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/18; A61; A61M; A61M15/00; A61M15/0001; A61M15/0018; A61M16/00; A61M16/20; A61M16/208; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7876; Y10T137/7877
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |