US3280807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metering valve for hydraulic valve lifter
Assignee: Lubrizol Corp
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Filing: 1965-10-28
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Granted: 1966-10-25
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Expires: 1985-10-28
Abstract
No abstract record available.
Inventors
- 👤 Dean C Bardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:13
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
IN A VALVE APPARATUS FOR METERING OIL FROM AN OIL CHAMBER THROUGH AN OUTLET APERTURE, SAID VALVE APPARATUS COMPRISING A SEAT AT THE CHAMBER END OF SAID OUTLET APERTURE AND A GENERALLY PLATE-LIKE ELEMENT MOVEBLE INTO AND OUT OF ABUTMENT WITH SAID SEAT, THE ABUTTING SURFACE OF ONE OF SAID SEAT AND PLATE-LIKE ELEMENT BEING AT LEAST PARTIALLY CURVED ABOUT A SINGLE AXIS AND THE OTHER SURFACE BEING SUBSTANTIALLY FLAT WHEREBY SAID OUTLET APERTURE IS ONLY PARTIALLY CLOSED WHEN SAID SEAT AND PLATE-LIKE ELEMENT ARE IN ABUTMENT; THE IMPROVEMENT WHICH COMPRISES AT LEAST ONE TRANSVERSE GROOVE INTERSECTING SAID CURVED SURFACE.
Claim 2
Dependent Claim
100 words
IN A VALVE APPARATUS FOR METERING OIL FROM AN OIL CHAMBER THROUGH AN OUTLET APERTURE, SAID VALVE APPARATUS COMPRISING A SEAT AT THE CHAMBER END OF SAID OUTLET APERTURE AND A GENERALLY PLATE-LIKE ELEMENT MOVEBLE INTO AND OUT OF ABUTMENT WITH SAID SEAT, THE ABUTTING SURFACE OF ONE OF SAID SEAT AND PLATE-LIKE ELEMENT BEING AT LEAST PARTIALLY CURVED ABOUT A SINGLE AXIS AND THE OTHER SURFACE BEING SUBSTANTIALLY FLAT WHEREBY SAID OUTLET APERTURE IS ONLY PARTIALLY CLOSED WHEN SAID SEAT AND PLATE-LIKE ELEMENT ARE IN ABUTMENT; THE IMPROVEMENT WHICH COMPRISES AT LEAST ONE TRANSVERSE GROOVE INTERSECTING SAID CURVED SURFACE.
Claim 3
Dependent Claim
125 words
IN A HYDRAULIC VALVE LIFTER APPARATUS CONTAINING AN OIL CHAMBER; AN OIL INLT APERTURE; AN OUTLET APERTURE FOR THE PASSAGE OF OIL TO A HOLLOW PUSH ROD; AND A VALVE MEANS FOR CONTROLLING THE FLOW OF OIL THROUGH SAID OUTLET APERTURE, SAID VALVE MEANS COMPRISING A SEAT AT THE CHAMBER END OF SAID OUTLET APERTURE AND A GENERALLY PLATE-LIKE ELEMENT FREELY MOVABLE INTO AND OUT OF ABUTMENT WITH SAID SEAT, THE ABUTTING SURFACE OF SAID SEAT BEING AT LEAST PARTIALLY CYLINDRICALLY CURVED ABOUT A SINGLE AXIS AND SAID PLATE-LIKE ELEMENT BEING SUBSTANTIALLY FLAT; THE IMPROVEMENT WHICH COMPRISES TWO TRANSVERSE GROOVES IN SAID CURVES SURFACE, SAID GROVES BEING PERPENDICULAR TO THE AXIS OF CURVATURE OF SAID SURFACE AND EQUIDISTANT FROM THE CENTER OF SAID OUTLET APERTUE.
Claim 4
Dependent Claim
125 words
IN A HYDRAULIC VALVE LIFTER APPARATUS CONTAINING AN OIL CHAMBER; AN OIL INLT APERTURE; AN OUTLET APERTURE FOR THE PASSAGE OF OIL TO A HOLLOW PUSH ROD; AND A VALVE MEANS FOR CONTROLLING THE FLOW OF OIL THROUGH SAID OUTLET APERTURE, SAID VALVE MEANS COMPRISING A SEAT AT THE CHAMBER END OF SAID OUTLET APERTURE AND A GENERALLY PLATE-LIKE ELEMENT FREELY MOVABLE INTO AND OUT OF ABUTMENT WITH SAID SEAT, THE ABUTTING SURFACE OF SAID SEAT BEING AT LEAST PARTIALLY CYLINDRICALLY CURVED ABOUT A SINGLE AXIS AND SAID PLATE-LIKE ELEMENT BEING SUBSTANTIALLY FLAT; THE IMPROVEMENT WHICH COMPRISES TWO TRANSVERSE GROOVES IN SAID CURVES SURFACE, SAID GROVES BEING PERPENDICULAR TO THE AXIS OF CURVATURE OF SAID SURFACE AND EQUIDISTANT FROM THE CENTER OF SAID OUTLET APERTUE.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |