Patent US3168105A successfully refreshed from Google Patents.
US3168105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level control valve
Assignee: Individual
•
Filing: 1962-09-27
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Granted: 1965-02-02
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Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 Richard L Cisco
- 👤 Roger H Blanchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:00
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7287
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A VALVE FOR CONTROLLING THE LEVEL OF LIQUID IN A TANK COMPRISING A HOUSING HAVING A PASSAGE THERETHROUGH FOR FLOW OF LIQUID; A VALVE MEMBER MOVABLE IN SAID HOUSING TO OPEN AND CLOSE SAID PASSAGE; JET ASSEMBLY HAVING A NOZZLE MEANS IN COMMUNICATION WITH SAID PASSGE UPSTREAM OF SAID VALVE MEMBER AND A RECEIVER MEANS SPACED FROM SAID NOZZLE MEANS UPON WHICH A JET OF LIQUID FROM SAID NOZZLE MEANS IMPINGES TO TRANSFORM THE VELOCITY HEAD OF THE JET TO DIFFERENT PRESSURE HEADS ACCORDING TO WHETHER OR NOT THE JET IS SUBMERGED IN THE LIQUID IN THE TANK; AN ACTUATOR MEANS BEARING ON SAID VALVE MEMBER AND MOVABLE IN SAID HOUSING BY CHANGE IN PRESSURE HEAD ACTING THEREON THUS TO CONTROL MOVEMENT OF SAID VALVE MEMBER TO OPEN AND CLOSE SAID PASSAGE; SAID ACTUATOR MEANS AND HOUSING DEFINING A CHAMBER WHICH IS IN COMMUNICATION WITH SAID RECEIVER MEANS AND TO WHICH CHAMBER SUCH DIFFERENT PRESSURE HEADS ARE TRANSMITTED TO ACT ON SAID ACTUATOR MEANS.
Claim 2
Dependent Claim
164 words
A VALVE FOR CONTROLLING THE LEVEL OF LIQUID IN A TANK COMPRISING A HOUSING HAVING A PASSAGE THERETHROUGH FOR FLOW OF LIQUID; A VALVE MEMBER MOVABLE IN SAID HOUSING TO OPEN AND CLOSE SAID PASSAGE; JET ASSEMBLY HAVING A NOZZLE MEANS IN COMMUNICATION WITH SAID PASSGE UPSTREAM OF SAID VALVE MEMBER AND A RECEIVER MEANS SPACED FROM SAID NOZZLE MEANS UPON WHICH A JET OF LIQUID FROM SAID NOZZLE MEANS IMPINGES TO TRANSFORM THE VELOCITY HEAD OF THE JET TO DIFFERENT PRESSURE HEADS ACCORDING TO WHETHER OR NOT THE JET IS SUBMERGED IN THE LIQUID IN THE TANK; AN ACTUATOR MEANS BEARING ON SAID VALVE MEMBER AND MOVABLE IN SAID HOUSING BY CHANGE IN PRESSURE HEAD ACTING THEREON THUS TO CONTROL MOVEMENT OF SAID VALVE MEMBER TO OPEN AND CLOSE SAID PASSAGE; SAID ACTUATOR MEANS AND HOUSING DEFINING A CHAMBER WHICH IS IN COMMUNICATION WITH SAID RECEIVER MEANS AND TO WHICH CHAMBER SUCH DIFFERENT PRESSURE HEADS ARE TRANSMITTED TO ACT ON SAID ACTUATOR MEANS.
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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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |