US3707202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter in crankcase pan
Assignee: Individual
•
Filing: 1970-07-31
•
Granted: 1972-12-26
•
Expires: 1990-07-31
Abstract
Abstract An external recess is formed in an oil pan so that an oil filter may be easily replaced therein. The filter is threadably engaged on a conduit. A gasket cooperates with the filter housing and an inlet means in the pan wall such that the oil travels from the pan to the filter and conduit then to the oil pump.
Inventors
- 👤 Roy H Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:29
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/0004; B; B01; B01D; B01D35/00; B01D35/02; B01D35/027; B01D35/0273; F01M11/03; F01M2011/0079
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
In an internal combustion engine having an oil pan and an oil pump, the improvement comprising an external recess formed in said pan and having a perforated flat wall, a conduit projecting through said wall, a spin-on replacement oil filter having the filtering material enclosed in a housing having a perforate end and threadably received on said conduit, and a gasket engagable with said wall and said filter housing and spaced from said conduit and surrounding the perforations in said end, an inlet means near the bottom of said pan and spaced therefrom, and opening into the space between the gasket and the conduit and lying between said wall and said filter, said conduit being connected to the inlet of the oil pump carried by said internal combustion engine for circulating oil through the lubrication system.
Claim 2
Dependent Claim
136 words
In an internal combustion engine having an oil pan and an oil pump, the improvement comprising an external recess formed in said pan and having a perforated flat wall, a conduit projecting through said wall, a spin-on replacement oil filter having the filtering material enclosed in a housing having a perforate end and threadably received on said conduit, and a gasket engagable with said wall and said filter housing and spaced from said conduit and surrounding the perforations in said end, an inlet means near the bottom of said pan and spaced therefrom, and opening into the space between the gasket and the conduit and lying between said wall and said filter, said conduit being connected to the inlet of the oil pump carried by said internal combustion engine for circulating oil through the lubrication system.
Claim 3
Dependent Claim
23 words
The filter of claim 1 wherein the pan recess is formed in the pan with the axis of the filter element generally horizontal.
Claim 4
Dependent Claim
36 words
The filter of claim 2 wherein the inlet means comprises a dip tube having the inlet end spaced from and near the bottom of the pan and having the outlet between the conduit and the gasket.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |