Patent US3265350A successfully refreshed from Google Patents.
US3265350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller
Assignee: Cadillac Gage Co
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Filing: 1963-10-11
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Granted: 1966-08-09
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Expires: 1983-10-11
Abstract
No abstract record available.
Inventors
- 👤 Emory N Yount
- 👤 Jr Charles N Mckinnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:42
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/24; B64G1/26; B64G1/40; B64G1/401; F; F02; F02K; F02K9/00; F02K9/80; F02K9/805; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN A CONTROLLER, A SUPPLY PORT, A WORKING PORT AND AN EXHAUST PORT, A FIRST CONNECTION BETWEEN SAID SUPPLY AND EXHAUST PORTS, A SECOND CONNECTION BETWEEN SAID SUPPLY AND WORKING PORTS, A PILOT VALVE IN SAID FIRST CONNECTION, MEANS FOR CONTROLLING THE POSITION OF SAID PILOT VALVE, A RESTRICTION BETWEEN SAID PILOT VALVE AND EXHAUST PORT, A POPPET-TYPE MAIN VALVE IN SAID SECOND CONNECTION COMPRISING A SPOOL, A FIRST BELLOWS CONNECTED TO ONE END OF SAID SPOOL, THE INTERIOR OF SAID FIRST BELLOWS BEING CONNECTED TO SAID FIRST CONNECTION BETWEEN SAID PILOT VALVE AND RESTRICTION, A SECOND BELLOWS CONNECTED TO THE OTHER END OF SAID SPOOL, THE INTERIOR OF SAID SECOND BELLOWS BEING CONNECTED TO THE EXIT SIDE OF SAID RESTRICTION, AND AN INLET CHAMBER IN COMMUNICATION WITH SAID SUPPLY PORT, SAID FIRST BELLOWS AND MAIN VALVE SPOOL BEING DISPOSED IN SAID INLET CHAMBER, THE RELATIVE AREAS OF SAID FIRST BELLOWS AND SPOOL BEING SUCH THAT PRESSURE IN THE INLET CHAMBER WILL TEND TO MAINTAIN THE MAIN VALVE IN ITS CLOSED POSITION.
Claim 2
Dependent Claim
172 words
IN A CONTROLLER, A SUPPLY PORT, A WORKING PORT AND AN EXHAUST PORT, A FIRST CONNECTION BETWEEN SAID SUPPLY AND EXHAUST PORTS, A SECOND CONNECTION BETWEEN SAID SUPPLY AND WORKING PORTS, A PILOT VALVE IN SAID FIRST CONNECTION, MEANS FOR CONTROLLING THE POSITION OF SAID PILOT VALVE, A RESTRICTION BETWEEN SAID PILOT VALVE AND EXHAUST PORT, A POPPET-TYPE MAIN VALVE IN SAID SECOND CONNECTION COMPRISING A SPOOL, A FIRST BELLOWS CONNECTED TO ONE END OF SAID SPOOL, THE INTERIOR OF SAID FIRST BELLOWS BEING CONNECTED TO SAID FIRST CONNECTION BETWEEN SAID PILOT VALVE AND RESTRICTION, A SECOND BELLOWS CONNECTED TO THE OTHER END OF SAID SPOOL, THE INTERIOR OF SAID SECOND BELLOWS BEING CONNECTED TO THE EXIT SIDE OF SAID RESTRICTION, AND AN INLET CHAMBER IN COMMUNICATION WITH SAID SUPPLY PORT, SAID FIRST BELLOWS AND MAIN VALVE SPOOL BEING DISPOSED IN SAID INLET CHAMBER, THE RELATIVE AREAS OF SAID FIRST BELLOWS AND SPOOL BEING SUCH THAT PRESSURE IN THE INLET CHAMBER WILL TEND TO MAINTAIN THE MAIN VALVE IN ITS CLOSED POSITION.
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |