Patent US4479468A successfully refreshed from Google Patents.
US4479468A
Expired / Lapsed
US
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Automotive oil filter precharging arrangement
Assignee: Individual
•
Filing: 1983-12-09
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Granted: 1984-10-30
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Expires: 2003-12-09
Abstract
Abstract A port proximate to an automotive oil filter, and a closure therefor, used to precharge a newly installed oil filter with oil. The port may be located either in an adaptor mounting plate, which is located between the filter and the engine block, or in the engine block itself. The port is in fluid communication with the filter, allowing a newly installed filter to be precharged with oil to minimize engine wear.
Inventors
- 👤 Joseph E. Norwood, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:57
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/10; B; B01; B01D; B01D35/00; B01D35/30; B01D35/306
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
114 words
In an internal combustion engine having a lubrication system including oil passages in the engine block, and filter mounting means on the block for an oil filter in the flow of the oil, the improvement of an oil precharging means for said filter comprising: an externally accessible port in said engine block located proximate to said filter mounting means and in fluid communication with an oil passage leads to said filter through said mounting means, said port allowing manual introduction of oil into an empty, newly installed filter, before said engine is started, to minimize wear of said engine; and closure means for closing said port after the filter has been charged with oil.
Claim 2
Dependent Claim
114 words
In an internal combustion engine having a lubrication system including oil passages in the engine block, and filter mounting means on the block for an oil filter in the flow of the oil, the improvement of an oil precharging means for said filter comprising: an externally accessible port in said engine block located proximate to said filter mounting means and in fluid communication with an oil passage leads to said filter through said mounting means, said port allowing manual introduction of oil into an empty, newly installed filter, before said engine is started, to minimize wear of said engine; and closure means for closing said port after the filter has been charged with oil.
Claim 3
Dependent Claim
51 words
An oil filter precharging means in accordance with claim 1 further comprising an extension conduit in fluid communication with said port, extending upwardly therefrom to a height above said oil filter to allow said filter to be precharged with oil, and said closure means closes the open top of said conduit.
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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) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |