Patent US2405074A successfully refreshed from Google Patents.
US3200845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot operated fluid direction change-over valve
Assignee: KYB Corp
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Filing: 1963-07-16
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Granted: 1965-08-17
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Expires: 1983-07-16
Abstract
No abstract record available.
Inventors
- 👤 Nakazima Masaya
- 👤 Ishikawa Hiroaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:01
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0402; F16; F16K; F16K31/00; F16K31/12; F16K31/42; F16K31/423; F16K31/426; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A CONTROL VALVE COMPRISING A VALVE BODY HAVING A BORE, A VALVE MMEMBER SLIDABLY MOUNTED IN SAID BORE, SAID BODY MEMBER HAVING FLUID SUPPLY PASSAGEWAYS, EACH INTERCOMMUNICATING A PORT COMMUNICABLE WITH A SOURCE OF FLUID UNDER PRESSURE, AND OPPOSITE ENDS OF SAID VALVE MEMBER, SAID BODY MEMBER HAVING FLUID DISCHARGE PASSAGEWAYS EACH COMMUNICATING WITH ONE OF SAID FLUID SUPPLY PASSAGEWAYS, FIRST AND SECOND INDEPENDENTLY MOVABLE MEANS MOUNTED IN SAID VALVE BODY EACH COOPERATING WITH ONE OF SAID FLUID SUPPLY PASSAGEWAYS AND SELECTIVELY OPERABLE FOR OBSTRUCTING THE COOPERATING FLUID SUPPLY PASSAGEWAY AND HAVING MEANS OPERABLE SIMULATANEOUSLY FOR OBSTRUCTING THE FLUID DISCHARGE PASSAGEWAY COMMUNICATING WITH THE OTHER OF SAID FLUID SUPPLY PASSAGEWAYS TO PERMIT A PRESSURE INCREASE AT ONE OF SAID VALVE MEMBER
Claim 2
Dependent Claim
121 words
A CONTROL VALVE COMPRISING A VALVE BODY HAVING A BORE, A VALVE MMEMBER SLIDABLY MOUNTED IN SAID BORE, SAID BODY MEMBER HAVING FLUID SUPPLY PASSAGEWAYS, EACH INTERCOMMUNICATING A PORT COMMUNICABLE WITH A SOURCE OF FLUID UNDER PRESSURE, AND OPPOSITE ENDS OF SAID VALVE MEMBER, SAID BODY MEMBER HAVING FLUID DISCHARGE PASSAGEWAYS EACH COMMUNICATING WITH ONE OF SAID FLUID SUPPLY PASSAGEWAYS, FIRST AND SECOND INDEPENDENTLY MOVABLE MEANS MOUNTED IN SAID VALVE BODY EACH COOPERATING WITH ONE OF SAID FLUID SUPPLY PASSAGEWAYS AND SELECTIVELY OPERABLE FOR OBSTRUCTING THE COOPERATING FLUID SUPPLY PASSAGEWAY AND HAVING MEANS OPERABLE SIMULATANEOUSLY FOR OBSTRUCTING THE FLUID DISCHARGE PASSAGEWAY COMMUNICATING WITH THE OTHER OF SAID FLUID SUPPLY PASSAGEWAYS TO PERMIT A PRESSURE INCREASE AT ONE OF SAID VALVE MEMBER
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |