Patent US3262434A successfully refreshed from Google Patents.
US3262434A
Expired / Lapsed
US
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Self-adjusting hydraulic valve lifter for piston engines
Assignee: Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
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Filing: 1964-02-27
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Granted: 1966-07-26
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Kuchen Richard
- 👤 Sossna Hans-Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
SELF-ADJUSTING HYDRAULIC VALVE LIFTER FOR PISTON ENGINES COMPRISING TWO LONGITUDINALLY SLIDABLE TELESCOPED CYLINDRICAL MEMBERS CLOSED AT THEIR EXTREME ENDS DEFINING BETWEEN THEM A PRESSURE CHAMBER, CHECK VALVE MEANS CONNECTING SAID PRESSURE CHAMBER WITH AN ANTECHAMBER LOCATED IN ONE OF SAID CYLINDRICAL MEMBERS, RADIALLY DIRECTED BORE HOLES THROUGH THE CYLINDRICAL WALL OF SAID ANTECHAMBER, MEANS TO PROVIDE A HYDRAULIC FLUID TO SAID ANTECHAMBER THROUGH SAID BORE HOLES, SAID CYLINDRICAL MEMBERS BEING TELESCOPED INTO EACH OTHER WITH RELATIVELY LARGE CLEARANCE, ELASTIC SEALING ELEMENTS SEALING OFF SAID CYLINDRICAL MEMBERS WITH RESPECT TO EACH OTHER, AT LEAST ONE VENT BORE FROM SAID PRESSURE CHAMBER TO THE OUTSIDE OF THE VALVE LIFTER, AN ADDITIONAL STRUCTURAL ELEMENT ADJACENT THE WALL OF THE PRESSURE CHAMBER IN THE AREA OF THE VENT BORE TO FORM AN ANNULAR SLIT BETWEEN THE WALL OF THE PRESSURE CHAMBER AND SAID ADDITIONAL STRUCTURAL ELEMENT, SAID SLIT BEING OF SUCH A WIDTH THAT ADDITIONAL THROTTLING OF THE VENT BORE RESULTS, SAID ADDITIONAL STRUCTURAL ELEMENT BEING OF A HEAT EXPANDABLE MATERIAL WHEREBY IT EFFECTS A CONSTRICTION OF THE THROTTLE SLIT UPON HEATING.
Claim 2
Dependent Claim
178 words
SELF-ADJUSTING HYDRAULIC VALVE LIFTER FOR PISTON ENGINES COMPRISING TWO LONGITUDINALLY SLIDABLE TELESCOPED CYLINDRICAL MEMBERS CLOSED AT THEIR EXTREME ENDS DEFINING BETWEEN THEM A PRESSURE CHAMBER, CHECK VALVE MEANS CONNECTING SAID PRESSURE CHAMBER WITH AN ANTECHAMBER LOCATED IN ONE OF SAID CYLINDRICAL MEMBERS, RADIALLY DIRECTED BORE HOLES THROUGH THE CYLINDRICAL WALL OF SAID ANTECHAMBER, MEANS TO PROVIDE A HYDRAULIC FLUID TO SAID ANTECHAMBER THROUGH SAID BORE HOLES, SAID CYLINDRICAL MEMBERS BEING TELESCOPED INTO EACH OTHER WITH RELATIVELY LARGE CLEARANCE, ELASTIC SEALING ELEMENTS SEALING OFF SAID CYLINDRICAL MEMBERS WITH RESPECT TO EACH OTHER, AT LEAST ONE VENT BORE FROM SAID PRESSURE CHAMBER TO THE OUTSIDE OF THE VALVE LIFTER, AN ADDITIONAL STRUCTURAL ELEMENT ADJACENT THE WALL OF THE PRESSURE CHAMBER IN THE AREA OF THE VENT BORE TO FORM AN ANNULAR SLIT BETWEEN THE WALL OF THE PRESSURE CHAMBER AND SAID ADDITIONAL STRUCTURAL ELEMENT, SAID SLIT BEING OF SUCH A WIDTH THAT ADDITIONAL THROTTLING OF THE VENT BORE RESULTS, SAID ADDITIONAL STRUCTURAL ELEMENT BEING OF A HEAT EXPANDABLE MATERIAL WHEREBY IT EFFECTS A CONSTRICTION OF THE THROTTLE SLIT UPON HEATING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |