US3128039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stable fluid device
Assignee: International Business Machines Corp
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Filing: 1961-12-20
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Granted: 1964-04-07
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Expires: 1981-12-20
Abstract
No abstract record available.
Inventors
- 👤 Richard E Norwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:53
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/08; F15C1/10; F15C1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2147; Y10T137/2158; Y10T137/2229; Y10T137/224; Y10T137/2245; Y10T137/8593; Y10T137/877
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A FLUID DEVICE COMPRISING TWO ELEMENTS, EACH COMPRISING MEANS PROVIDING AN INLET FOR CONVEYING A FLUID POWER STREAM, A PLURALITY OF OUTLETS, AND A PLURALITY OF CONTROL PORTS SELECTIVELY CHARGEABLE WITH PRESSURE FLUID FOR SWITCHING THE STREAM IN THAT ELEMENT TO DESIRED OUTLETS; MEANS FOR SUPPLYING INPUT PRESSURE FLUID PULSES CONCURRENTLY TO AT LEAST ONE CONTROL PORT OF EACH ELEMENT; AND MEANS INTERCONNECTING ONE OUTLET OF EACH ELEMENT WITH ONE OTHER CONTROL PORT OF THE OTHER ELEMENT AS NECESSARY TO CAUSE SUCCESSIVE INPUT PULSES TO SWITCH THE STREAM IN A CERTAIN ONE OF SAID ELEMENTS ALTERNATELY BACK AND THEN FORTH BETWEEN TWO OUTLETS THEREOF AND UPON EVERY OTHER PULSE SWITCH THE STREAM OF THE REMAINING ELEMENT MOMENTARILY FROM ONE OUTLET THEREOF TO THE OTHER OUTLET THEREOF FOR PROVIDING A REGENERATIVE SIGNAL PULSE.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |