Patent US3371675A successfully refreshed from Google Patents.
US3371675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid amplifier
Assignee: Schneider Electric Systems USA Inc
•
Filing: 1964-06-24
•
Granted: 1968-03-05
•
Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard W Hatch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:10
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/2234; Y10T137/2256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
A FLUID AMPLIFIER INTEGRAL DEVICE COMPRISING A MAIN FLUID INPUT PASSAGE, TWO OUTPUT PASSAGES BRANCHING FROM SAID MAIN PASSAGE, A SIDE WALL EXHAUST SETBACK AND CLEARANCE RECESS IN EACH OF SAID OUTPUT PASSAGES WHEREBY ORDINARY BI-STABLE ACTION IS AVOIDED IN THAT NO OUTPUT PASSAGE WALL SECTION IS PROVIDED FOR THE FLUID FLOW TO CLING TO, A SINGLE CENTRAL EXHAUST PASSAGE OPEN TO SAID MAIN FLUID INPUT PASSAGE AND LOCATED BETWEEN SAID TWO OUTPUT PASAGES, A PAIR OF INITIAL SIGNAL PASSAGES AS OPPOSING CONTROL INPUTS TO SAID DEVICE WHEREBY FLUID FLOW FROM SAID MAIN FLOW INPUT WILL BE DIVIDED BETWEEN SAID OUTPUT PASSAGES ACCORDING TO THE SIGNAL DIFFERENTIAL IN SAID CONTROL INPUT PASSAGES WITHOUT FLOW LOCK-UP IN EITHER OF SAID OUTPUT PASSAGES, A PAIR OF FEEDBACK SIGNAL OPPOSING CONTROL INPUTS TO SAID DEVICE, CROSSOVER FEEDBACK PASSAGES FROM SAID OUTPUT PASSAGES TO SAID FEEDBACK CONTROL INPUTS, A SERIES COMBINATION OF FLUID RESISTANCE AND FLUID CAPACITY MEANS IN EACH OF SAID CROSSOVER FEEDBACK PASSAGES, AN OUTPUT TAKE-OFF PASSAGE FROM EACH OF SAID CROSSOVER FEEDBACK PASSAGES, AND FLUID RESISTANCE MEANS IN EACH OF SAID OUTPUT TAKE-OFF PASSAGES, WHEREBY A FEEDBACK DIFFERENTIAL SIGNAL IS APPLIED TO SAID DEVICE IN THE SAME PROPORTION AND DIRECTION AS THE INITIAL SIGNAL DIFFERENTIAL, IN SUCH MANNER AS TO MAINTAIN THE OUTPUT DIFFERENTIAL AS A MEMORY OF THE INITIAL SIGNAL DIFFERENTIAL.
Claim 2
Dependent Claim
221 words
A FLUID AMPLIFIER INTEGRAL DEVICE COMPRISING A MAIN FLUID INPUT PASSAGE, TWO OUTPUT PASSAGES BRANCHING FROM SAID MAIN PASSAGE, A SIDE WALL EXHAUST SETBACK AND CLEARANCE RECESS IN EACH OF SAID OUTPUT PASSAGES WHEREBY ORDINARY BI-STABLE ACTION IS AVOIDED IN THAT NO OUTPUT PASSAGE WALL SECTION IS PROVIDED FOR THE FLUID FLOW TO CLING TO, A SINGLE CENTRAL EXHAUST PASSAGE OPEN TO SAID MAIN FLUID INPUT PASSAGE AND LOCATED BETWEEN SAID TWO OUTPUT PASAGES, A PAIR OF INITIAL SIGNAL PASSAGES AS OPPOSING CONTROL INPUTS TO SAID DEVICE WHEREBY FLUID FLOW FROM SAID MAIN FLOW INPUT WILL BE DIVIDED BETWEEN SAID OUTPUT PASSAGES ACCORDING TO THE SIGNAL DIFFERENTIAL IN SAID CONTROL INPUT PASSAGES WITHOUT FLOW LOCK-UP IN EITHER OF SAID OUTPUT PASSAGES, A PAIR OF FEEDBACK SIGNAL OPPOSING CONTROL INPUTS TO SAID DEVICE, CROSSOVER FEEDBACK PASSAGES FROM SAID OUTPUT PASSAGES TO SAID FEEDBACK CONTROL INPUTS, A SERIES COMBINATION OF FLUID RESISTANCE AND FLUID CAPACITY MEANS IN EACH OF SAID CROSSOVER FEEDBACK PASSAGES, AN OUTPUT TAKE-OFF PASSAGE FROM EACH OF SAID CROSSOVER FEEDBACK PASSAGES, AND FLUID RESISTANCE MEANS IN EACH OF SAID OUTPUT TAKE-OFF PASSAGES, WHEREBY A FEEDBACK DIFFERENTIAL SIGNAL IS APPLIED TO SAID DEVICE IN THE SAME PROPORTION AND DIRECTION AS THE INITIAL SIGNAL DIFFERENTIAL, IN SUCH MANNER AS TO MAINTAIN THE OUTPUT DIFFERENTIAL AS A MEMORY OF THE INITIAL SIGNAL DIFFERENTIAL.
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |