Emission control device
Abstract
Abstract A MECHANISM FOR VARYING THE PHASE RELATIONSHIP OF A CAMSHAFT WITH RESPECT TO CRANKSHAFT. A DRIVEN MEMBER IS SECURED IN FIXED RELATIONSHIP TO THE CAMSHAFT AND IS CONNECTED THROUGH A HELICAL BALL SPLINE TO A PISTON MEMBER WHICH IS NONROTATABLY RELATED TO THE CRANKSHAFT. THE PISTON MEMBER AND THE DRIVEN MEMBER DEFINE A FLUID CHAMBER THEREBETWEEN. A SHIFTABLE VALVE MEMBER PERMITS FLOW OF FLUID TO SAID CHAMBER CAUSING THE PISTON TO MOVE AXIALLY RELATIVE TO THE DRIVEN MEMBER, WHEREBY THE HELICAL BALL SPLINE CAUSES THE DRIVEN MEMBER TO ROTATE RELATIVE TO THE PISTON, WHICH IN TURN CAUSES ROTATION OF THE CAMSHAFT RELATIVE TO THE CRANKSHAFT. THE VALVE MEMBER MAY BE CONTROLLED EITHER MANUALLY OR AUTOMATICALLY IN RESPONSE TO AN ENGINE OPERATING CONDITION.
Inventors
- 👤 George B K Meacham
- 👤 James L Oliver
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |