US3273547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic tappet with metering means
Assignee: Stanadyne LLC
•
Filing: 1965-01-12
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Granted: 1966-09-20
•
Expires: 1985-01-12
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Lesher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:40
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7904; Y10T137/7908; Y10T137/7909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A METERING VALVE FOR A TAPPET HAVING A HOLLOW OPEN ENDED CYLINDER, A HOLLOW PLUNGER MOUNTED FOR RECIPROCATION THEREIN, A PASSAGE FORMED IN THE CYLINDER WALL AND IN THE PLUNGER WALL THROUGH WHICH OIL MAY REACH THE INTERIOR OF THE PLUNGER, A PRESSURE CHAMBER DEFINED WITHIN THE CYLINDER AND BETWEEN IT AND THE PLUNGER, A CLOSURE FOR SAID PLUNGER, A PASSAGE THROUGH SAID CLOSURE, SAID VALUE COMPRISING MEANS WITHIN THE PLUNGER FOR METERING FLOW THROUGH SAID CLOSURE PASSAGE COMPRISING A DISKLIKE MEMBER, A PLURALITY OF RAISED PORTIONS FORMED ONE ON EACH FACE OF SAID MEMBER, EACH COMPRISING A WALL-LIKE MEMBER HAVING ADJACENT ENDS APPROACHING BUT SEPARATED FROM EACH OTHER, THE AREA OF SEPARATION OF THE ENDS OF EACH PAIR OF WALL-LIKE MEMBERS BEING IDENTICAL, AND A SURFACE FORMED ON SAID CLOSURE WITHIN SAID PLUNGER AGAINST WHICH THE ADJACENT WALL-LIKE MEMBER IS ADAPTED TO BE SEATED IN RESPONSE TO PRESSURE WITHIN THE PLUNGER, SAID WALL-LIKE MEMBERS BEING
Claim 2
Dependent Claim
156 words
A METERING VALVE FOR A TAPPET HAVING A HOLLOW OPEN ENDED CYLINDER, A HOLLOW PLUNGER MOUNTED FOR RECIPROCATION THEREIN, A PASSAGE FORMED IN THE CYLINDER WALL AND IN THE PLUNGER WALL THROUGH WHICH OIL MAY REACH THE INTERIOR OF THE PLUNGER, A PRESSURE CHAMBER DEFINED WITHIN THE CYLINDER AND BETWEEN IT AND THE PLUNGER, A CLOSURE FOR SAID PLUNGER, A PASSAGE THROUGH SAID CLOSURE, SAID VALUE COMPRISING MEANS WITHIN THE PLUNGER FOR METERING FLOW THROUGH SAID CLOSURE PASSAGE COMPRISING A DISKLIKE MEMBER, A PLURALITY OF RAISED PORTIONS FORMED ONE ON EACH FACE OF SAID MEMBER, EACH COMPRISING A WALL-LIKE MEMBER HAVING ADJACENT ENDS APPROACHING BUT SEPARATED FROM EACH OTHER, THE AREA OF SEPARATION OF THE ENDS OF EACH PAIR OF WALL-LIKE MEMBERS BEING IDENTICAL, AND A SURFACE FORMED ON SAID CLOSURE WITHIN SAID PLUNGER AGAINST WHICH THE ADJACENT WALL-LIKE MEMBER IS ADAPTED TO BE SEATED IN RESPONSE TO PRESSURE WITHIN THE PLUNGER, SAID WALL-LIKE MEMBERS BEING
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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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |