Patent US3420255A successfully refreshed from Google Patents.
US3420255A
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US
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Fluid control devices
Assignee: General Electric Co
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Filing: 1965-09-01
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Granted: 1969-01-07
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Expires: 1985-09-01
Abstract
No abstract record available.
Inventors
- 👤 Robert B Wilkerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:05
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/218; Y10T137/2202; Y10T137/2213; Y10T137/2218; Y10T137/2229; Y10T137/2262
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A FLUID CONTROL DEVICE, A FLUID AMPLIFIER SECTION HAVING A NOZZLE FOR GENERATING A JET OF FLUID, FLUID RECEIVING JET DEFLECTION CONTROL CHAMBERS, AND JET RECEIVING LOAD PASSAGES; A VALVE SECTION ON ONE SIDE OF SAID AMPLIFIER SECTION HAVING A VALVE CYLINDER AND HAVING A PLURALITY OF PASSAGES INCLUDING A FIRST PASSAGE CONNECTING THE CYLINDER IN COMMUNICATION WITH SAID LOAD PASSAGES, AND
Claim 2
Dependent Claim
63 words
IN A FLUID CONTROL DEVICE, A FLUID AMPLIFIER SECTION HAVING A NOZZLE FOR GENERATING A JET OF FLUID, FLUID RECEIVING JET DEFLECTION CONTROL CHAMBERS, AND JET RECEIVING LOAD PASSAGES; A VALVE SECTION ON ONE SIDE OF SAID AMPLIFIER SECTION HAVING A VALVE CYLINDER AND HAVING A PLURALITY OF PASSAGES INCLUDING A FIRST PASSAGE CONNECTING THE CYLINDER IN COMMUNICATION WITH SAID LOAD PASSAGES, AND
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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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |