US3802564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter and adapter
Assignee: Individual
•
Filing: 1972-06-09
•
Granted: 1974-04-09
•
Expires: 1992-06-09
Abstract
Abstract An oil filter adapted to fit between an oil filter and the filter mounting on a vehicle engine, with a valve arrangement for providing partial flow filtering above a predetermined minimum oil pressure. The adapter feeds pressurized oil through a valve into the central core of the filter, the oil returning through the body of the filter and passing through a metering port back to the engine at substantially ambient pressure. A special filter for use with the adapter has a valve in the filter core which traps oil and minimizes dripping when the filter is changed, the filter valve and the adapter valve acting together to control the oil flow.
Inventors
- 👤 W Turman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:27
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D35/306; B01D27/00; B01D27/04; B01D27/06; B01D27/07; B01D27/08; B01D27/10; B01D27/106; B01D35/14; B01D35/153
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
An oil filter adapter for insertion between an oil filter and filter mounting having an oil supply source, the filter having a hollow central core and a filter element surrounding the core, and with oil conducting openings for passage of oil passed through the filter element, the adapter and filter comprising: a body having means for attachment to the filter mounting, the body having an end face for sealed engagement with the filter mount, with a channel in the end face, said body having a central bore and ducts converging from said channel to the bore, a connector in said bore having a plug portion for connection into the central core of the filter, said connector having an oil inlet port with a valve normally closing the port, said valve being biaed to open and admit oil to the core of the filter at a predetermined pressure, said body having means for collecting oil from the openings of the filter, and said body having an oil return outlet communicating with said collecting means.
Claim 2
Dependent Claim
173 words
An oil filter adapter for insertion between an oil filter and filter mounting having an oil supply source, the filter having a hollow central core and a filter element surrounding the core, and with oil conducting openings for passage of oil passed through the filter element, the adapter and filter comprising: a body having means for attachment to the filter mounting, the body having an end face for sealed engagement with the filter mount, with a channel in the end face, said body having a central bore and ducts converging from said channel to the bore, a connector in said bore having a plug portion for connection into the central core of the filter, said connector having an oil inlet port with a valve normally closing the port, said valve being biaed to open and admit oil to the core of the filter at a predetermined pressure, said body having means for collecting oil from the openings of the filter, and said body having an oil return outlet communicating with said collecting means.
Claim 3
Dependent Claim
15 words
The structure of claim 1, wherein said return outlet has a restricted metering port therein.
Claim 4
Dependent Claim
31 words
The structure of claim 1, and including a one way valve in the central core adjacent said plug for admitting oil to the core after passage through the first mentioned valve.
Claim 5
Dependent Claim
19 words
The structure of claim 3, and including a restricted metering port between said collecting means and said return outlet.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |