US3245426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic selector relay
Assignee: Robertshaw Controls Co
•
Filing: 1962-11-13
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Granted: 1966-04-12
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Kreuter
- 👤 Klaus P Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:57
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/022; F15; F15B; F15B13/00; F15C; F15C3/00; F15C3/04; F16K31/00; F16K31/12; F16K31/126; F16K7/00; F16K7/12; F16K15/00; F16K15/14; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/2574; Y10T137/2605; Y10T137/2607; Y10T137/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PNEUMATIC RELAY COMPRISING; A PAIR OF CHAMBERS, A FIRST INLET AND OUTLET IN ONE CHAMBER, A SECOND INLET IN THE OTHER CHAMBER, A FLEXIBLE DIAPHRAGM MOUNTED BETWEEN THE CHAMBERS FOR MOVEMENT IN RESPONSE TO FLUID PRESSURE DIFFERENTIALS BETWEEN THE CHAMBERS INTO SEALING ENGAGEMENT WITH THE INLET HAVING THE LOWER PRESSURE, AND AT LEAST ONE SLIT IN THE DIAPHRAGM OPERATIVE, WHEN THE FIRST INLET IS SEALED BY THE DIAPHRAGM, TO PERMIT FLUID FLOW FROM THE SECOND INLET ONLY TO THE OUTLET.
Claim 2
Dependent Claim
81 words
A PNEUMATIC RELAY COMPRISING; A PAIR OF CHAMBERS, A FIRST INLET AND OUTLET IN ONE CHAMBER, A SECOND INLET IN THE OTHER CHAMBER, A FLEXIBLE DIAPHRAGM MOUNTED BETWEEN THE CHAMBERS FOR MOVEMENT IN RESPONSE TO FLUID PRESSURE DIFFERENTIALS BETWEEN THE CHAMBERS INTO SEALING ENGAGEMENT WITH THE INLET HAVING THE LOWER PRESSURE, AND AT LEAST ONE SLIT IN THE DIAPHRAGM OPERATIVE, WHEN THE FIRST INLET IS SEALED BY THE DIAPHRAGM, TO PERMIT FLUID FLOW FROM THE SECOND INLET ONLY TO THE OUTLET.
References Cited (Backward Citations)
US2416091A
Cited
US2707481A
Cited
US2778373A
Cited
US2858840A
Cited
US2897835A
Cited
US3008481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |