Metered mechanical tappet with slotted pushrod seat
Abstract
Abstract A METERED MECHANICAL TAPPET UTILIZING A PUSHROD SEAT PERMANENTLY RETAINED BY A SEPARATE RETAINER OR BY A PRESSFIT WITHIN THE CAVITY OF THE TAPPER UPON AN ANNYLAR SHOULDER OF THE LATTER. OIL FLOW IS OBTAINED BY A SLOT IN THE SURFACE OF THE SEAT SUPPORTED BY SAID SHOULDER, THE SLOT AT LEAST EXTENDING RADIALLY FROM THE OIL RESERVOIR DIRECTLY BELOW THE SEAT TO THE OUTER WALL OF THE SEAT, FROM WHENCE IT PASSES TO THE INTERIOR OF THE SEAT AND TO THE PUSHROD BY MEANS OF AN ANNULAR PATH BETWEEN THE OUTER SEAT WALL AND THE CAVITY ALONG AT LEAST A PORTION OF THE AXIAL EXTENSION OF THE SEAT. THE ACTUAL METERING IS ACCOMPLISHED BY EITHER THE SLOT, IN WHICH THE CASE THE ANNULAR PATH HAS A SUBSTANTIAL RADIAL THICKNESS, OR BY THE ANNULAR PATH, IN WHICH CASE ITS THICKNESS IS CONSIDERABLY LESS THAN ANY OF THE DIMENSIONS OF THE SLOT.
Inventors
- 👤 Ronald R Erickson
- 👤 Richard D Cornell
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |