US4515245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filler extension
Assignee: Rockford Enterprises Inc
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Filing: 1983-08-15
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Granted: 1985-05-07
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Expires: 2003-08-15
Abstract
Abstract A sheet metal oil filler extension formed of a metal tube having a stamped metal fitting on one end with a seal and a spring washer therearound for sealed attachment to an engine valve cover, and an annular sheet metal cap on the other tube end to receive a removable cover.
Inventors
- 👤 Dennis E. Salmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:01
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M2011/0491
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
336 words
A sheet metal oil filler extension for providing an extended passageway to an opening of a conventional engine valve lifter cover having a cap connector, said cap connector including said opening at its periphery having a plurality of cut outs for receiving the bosses on the neck portion of a conventional cap and a depending flange providing camming ramps with tapered undersurfaces over which the bosses of said cap cam and follow to retain the cap on said valve lifter cover comprising: an elongated substantially rigid sheet metal tube; an annular sheet metal fitting secured to one end of said tube, said fitting including a cylindrical collar fitted on and secured to one end of the tube; a flange extending radially inwardly from said collar and defining a central opening communicating with the opening through said tube; a neck extending from said flange and having a smaller diameter than the diameter of said tube, said neck corresponding in shape to the neck portion of said conventional cap thereby having a plurality of bosses extending radially therefrom for attachment of said fitting and tube to a conventional oil filler opening of an engine valve lifter cover; seal means for sealing said fitting within the valve lifter cover; a second annular sheet metal fitting comprising a cap connector secured on the other end of said tube, said cap connector having a U-shaped cross-sectional configuration at its periphery thereby providing two concentric inner and outer flanges connected together by a bight portion and defining a central opening communicating with the opening through said tube; said outer flange being secured to said other end of said tube and said inner flange having tapered under surfaces providing camming ramps; said bight portion and said inner flanges having a plurality of cut outs for receiving the bosses on the neck portion of a conventional cap and said camming ramps providing tapered undersurfaces over which the bosses of said cap cam and follow to retain a conventional removable cap on said metal tube.
Claim 2
Dependent Claim
336 words
A sheet metal oil filler extension for providing an extended passageway to an opening of a conventional engine valve lifter cover having a cap connector, said cap connector including said opening at its periphery having a plurality of cut outs for receiving the bosses on the neck portion of a conventional cap and a depending flange providing camming ramps with tapered undersurfaces over which the bosses of said cap cam and follow to retain the cap on said valve lifter cover comprising: an elongated substantially rigid sheet metal tube; an annular sheet metal fitting secured to one end of said tube, said fitting including a cylindrical collar fitted on and secured to one end of the tube; a flange extending radially inwardly from said collar and defining a central opening communicating with the opening through said tube; a neck extending from said flange and having a smaller diameter than the diameter of said tube, said neck corresponding in shape to the neck portion of said conventional cap thereby having a plurality of bosses extending radially therefrom for attachment of said fitting and tube to a conventional oil filler opening of an engine valve lifter cover; seal means for sealing said fitting within the valve lifter cover; a second annular sheet metal fitting comprising a cap connector secured on the other end of said tube, said cap connector having a U-shaped cross-sectional configuration at its periphery thereby providing two concentric inner and outer flanges connected together by a bight portion and defining a central opening communicating with the opening through said tube; said outer flange being secured to said other end of said tube and said inner flange having tapered under surfaces providing camming ramps; said bight portion and said inner flanges having a plurality of cut outs for receiving the bosses on the neck portion of a conventional cap and said camming ramps providing tapered undersurfaces over which the bosses of said cap cam and follow to retain a conventional removable cap on said metal tube.
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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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |