US4730583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve stem oil deflector
Assignee: Macrotech Fluid Sealing Inc
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Filing: 1987-08-10
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Granted: 1988-03-15
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Expires: 2007-08-10
Abstract
Abstract A molded thermoplastic valve stem oil deflector for an internal combustion engine comprises a two piece cup-shaped member having a skirt and a neck defined by two axially spaced radial flanges. The flanges have apertures therethrough defining a radially inwardly opening annulus for the acceptance of a conventional O-ring that seals on the valve stem and supports the oil deflector relative thereto.
Inventors
- 👤 Bernard G. Stritzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/08; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
An oil deflector for attachment to the stem of a valve of an internal combustion engine or the like comprising a molded relatively rigid plastic cup-shaped shell having a generally cylindrical wall section and a transverse end wall, the end wall of said shell including an opening for receiving a valve stem, and an annular axially extending flange radially spaced from the cylindrical wall section of said shell and the stem of said valve; an annular retainer ring having an axially extending flange acceptable between the axially extending flange on said shell and the cylindrical outer wall thereof, and having a radially inwardly extending portion coextensive with the transverse end wall on said shell, and; an O-ring disposed between the transverse end wall of said shell and the radially inwardly extending portion of said retainer and resiliently engagable with the valve stem of said valve.
Claim 2
Dependent Claim
145 words
An oil deflector for attachment to the stem of a valve of an internal combustion engine or the like comprising a molded relatively rigid plastic cup-shaped shell having a generally cylindrical wall section and a transverse end wall, the end wall of said shell including an opening for receiving a valve stem, and an annular axially extending flange radially spaced from the cylindrical wall section of said shell and the stem of said valve; an annular retainer ring having an axially extending flange acceptable between the axially extending flange on said shell and the cylindrical outer wall thereof, and having a radially inwardly extending portion coextensive with the transverse end wall on said shell, and; an O-ring disposed between the transverse end wall of said shell and the radially inwardly extending portion of said retainer and resiliently engagable with the valve stem of said valve.
References 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) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |