US3331380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and delay device for liquid fluid circuits
Assignee: Unisys Corp
•
Filing: 1964-11-27
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Granted: 1967-07-18
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Schonfeld Arnold
- 👤 John C Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:51
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/08; F15C1/10; F15C1/02; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2071; Y10T137/212; Y10T137/2125; Y10T137/2147
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
IN A FLUID AMPLIFIER HAVING A PAIR OF OUTPUT CHANNELS, A PAIR OF CONTROL CHANNELS AND MEANS SELECTIVELY PROVIDING ONE OR THE OTHER OF SAID OUTPUT CHANNELS WITH A LIQUID POWER STREAM, LIQUID CONTAINER MEANS, CONDUIT MEANS CONNECTING ONE OF SAID CONTROL CHANNELS TO SAID CONTAINER MEANS, SAID CONDUIT MEANS DEPENDING INTO SAID CONTAINER TO A PREDETERMINED DEPTH WHEREBY WHEN THE LIQUID IN SAID CONTAINER MEANS FALLS BELOW SAID DEPTH SAID POWER STREAM WILL BE SWITCHED BETWEEN SAID OUTPUT CHANNELS.
References Cited (Backward Citations)
US3185166A
Cited
US3159168A
Cited
US3117593A
Cited
US3158166A
Cited
US3228410A
Cited
US3267949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |