Carburetor having an automatic choke
Abstract
Abstract A CARBURETOR, HAVING A CHOKE VALVE WITH THERMOSTATIC MEANS ADAPTED TO URGE THE COKE VALVE IN THE CLOSING DIRECTION WHEN COLD, IS PROVIDED WITH PRESSURE RESPONSIVE MEANS WHICH COMMUNICATES WITH A SOURCE OF ENGINE VACUUM FOR MOVING THE CHOKE VALVE IN A DIRECTION OPPOSITE TO THAT OF THE THERMOSTATIC MEANS UPON ENGINE STARTING, THE DEGREE OF EFFECTIVE COMMUNICATION BETWEEN THE PRESSURE RESPONSIVE MEANS THE SOURCE OF ENGINE VACUUM IS CONTROLLED IN ACCORDANCE WITH THE POSITION OF THE CARBURETOR THROTTLE VALVE IS ORDER THAT THE PRESSURE RESPONSIVE MEANS WILL BE EFFECTIVE FOR MOVING THE CHOKE VALVE TO A FIRST PARTLY OPENED POSITION WHEN THE THROTTLE VALVE IS IN THE NOMINALLY CLOSED POSITION AND TO A VARIABLE SECOND MORE FULLY OPENED POSITION WHEN THE THROTTLE VALVE IS MOVED TO A PART THROTTLE POSITION.
Inventors
- 👤 Robert D Mitchell
Bibliographic Details
Claims Analysis
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |