Patent US3266473A successfully refreshed from Google Patents.
US3266473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle closed position limiter
Assignee: Walker Manufacturing Co
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Filing: 1964-03-17
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Granted: 1966-08-16
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Expires: 1984-03-17
Abstract
No abstract record available.
Inventors
- 👤 Keith H Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:33
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/06; F02M3/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
A DEVICE FOR CONTROLLING THE EMISSIONS IN THE EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE UNDER CERTAIN OPERATING CONDITIONS, SAID DEVICE BEING ATTACHABLE AS A UNIT TO THE ENGINE AND COMPRISING HOUSING MEANS DEFINING FIRST AND SECOND FLUID CHAMBERS CONNECTED BY A FLUID PASSAGE, THE FIRST OF SAID CHAMBERS DEFINING AT LEAST IN PART A FLUID MOTOR, AN ACTUATING MEMBER SUPPORTED FOR MOVEMENT WITH SAID FIRST FLUID CHAMBER, SAID ACTUATING MEMBER BEING ADAPTED TO BE CONNECTED TO A THROTTLE VALVE OF THE INTERNAL COMBUSTION ENGINE, SAID ACTUATING MEMBER BEING MOVABLE BETWEEN FIRST AND SECOND POSITIONS IN RESPONSE TO PRESSURE CHANGES WITHIN SAID FIRST FLUID CHAMBER FOR MOVING THE THROTTLE VALVE BETWEEN A NORMAL IDLE POSITION AND A PARTIALLY OPENED POSITION, VALVE MEANS INTERPOSED IN SAID FLUID PASSAGE FOR CONTROLLING THE COMMUNICATION OF PRESSURE BETWEEN SAID FIRST AND SECOND FLUID CHAMBERS, PRESSURE RESPONSIVE MEANS IN SAID SECOND FLUID CHAMBER FOR MOVING SAID VALVE MEANS BETWEEN A NORMAL CLOSED POSITION AND AN OPENED POSITION WHEN THE PRESSURE IN SAID SECOND FLUID CHAMBER FALLS BELOW A PREDETERMINED VALUE, SAID ACTUATING MEMBER BEING MOVABLE BETWEEN ITS FIRST AND SECOND POSITIONS WHEN SAID VALVE MEANS IS OPENED, AND CONDUIT MEANS FOR INTERCONNECTING SAID SECOND FLUID CHAMBER WITH THE INDUCTION SYSTEM OF THE ENGINE POSTERIOR TO THE THROTTLE VALVE.
Claim 2
Independent Claim
213 words
A DEVICE FOR CONTROLLING THE EMISSIONS IN THE EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE UNDER CERTAIN OPERATING CONDITIONS, SAID DEVICE BEING ATTACHABLE AS A UNIT TO THE ENGINE AND COMPRISING HOUSING MEANS DEFINING FIRST AND SECOND FLUID CHAMBERS CONNECTED BY A FLUID PASSAGE, THE FIRST OF SAID CHAMBERS DEFINING AT LEAST IN PART A FLUID MOTOR, AN ACTUATING MEMBER SUPPORTED FOR MOVEMENT WITH SAID FIRST FLUID CHAMBER, SAID ACTUATING MEMBER BEING ADAPTED TO BE CONNECTED TO A THROTTLE VALVE OF THE INTERNAL COMBUSTION ENGINE, SAID ACTUATING MEMBER BEING MOVABLE BETWEEN FIRST AND SECOND POSITIONS IN RESPONSE TO PRESSURE CHANGES WITHIN SAID FIRST FLUID CHAMBER FOR MOVING THE THROTTLE VALVE BETWEEN A NORMAL IDLE POSITION AND A PARTIALLY OPENED POSITION, VALVE MEANS INTERPOSED IN SAID FLUID PASSAGE FOR CONTROLLING THE COMMUNICATION OF PRESSURE BETWEEN SAID FIRST AND SECOND FLUID CHAMBERS, PRESSURE RESPONSIVE MEANS IN SAID SECOND FLUID CHAMBER FOR MOVING SAID VALVE MEANS BETWEEN A NORMAL CLOSED POSITION AND AN OPENED POSITION WHEN THE PRESSURE IN SAID SECOND FLUID CHAMBER FALLS BELOW A PREDETERMINED VALUE, SAID ACTUATING MEMBER BEING MOVABLE BETWEEN ITS FIRST AND SECOND POSITIONS WHEN SAID VALVE MEANS IS OPENED, AND CONDUIT MEANS FOR INTERCONNECTING SAID SECOND FLUID CHAMBER WITH THE INDUCTION SYSTEM OF THE ENGINE POSTERIOR TO THE THROTTLE VALVE.
References Cited (Backward Citations)
US2506511A
Cited
US3027884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |