US4151823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-change oil filter/reservoir system for internal combustion engine
Assignee: Individual
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Filing: 1977-07-28
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Granted: 1979-05-01
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Expires: 1997-07-28
Abstract
Abstract A quick-change oil filter/reservoir system for an internal combustion engine is provided in the form of a cartridge or canister containing an oil filter and precharged with a fresh supply of engine oil. The cartridge is releasably carried on a mount by quick-release fasteners and includes non-manipulative, self-sealing input and output fittings on the bottom surface which engage corresponding oil lines provided on the cartridge mount and connected to the engine oil pumps. In addition to the engine's primary oil pump, a secondary or scavanging oil pump is provided to continuously return engine oil from the engine's sump to the filter/reservoir cartridge. To accomplish an oil and filter change, the used cartridge, containing the used filter and the bulk of the used engine oil, is merely replaced with a new cartridge containing a fresh filter and engine oil.
Inventors
- 👤 Leland J. Grosse
- 👤 John B. Wessman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:03
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M11/03; F01M1/00; F01M1/10; F01M2001/105; F01M2001/1071; F01M2011/0483; F02; F02B; F02B2275/00; F02B2275/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
A quick-change oil filter/reservoir system for an internal combustion engine having a primary oil pump and oil sump comprising: a cartridge containing an oil filter element and a supply of oil, said cartridge having non-manipulative and self-sealing input and output fittings; a cartridge mounting for releasably carrying said cartridge, said mounting including input and output oil pipes corresponding to and engageable by said input and output fittings, respectively; scavenging pump means for continuously returning oil from said sump to said input oil pipe; and means connecting said output pipe to the input of said primary oil pump.
Claim 2
Dependent Claim
97 words
A quick-change oil filter/reservoir system for an internal combustion engine having a primary oil pump and oil sump comprising: a cartridge containing an oil filter element and a supply of oil, said cartridge having non-manipulative and self-sealing input and output fittings; a cartridge mounting for releasably carrying said cartridge, said mounting including input and output oil pipes corresponding to and engageable by said input and output fittings, respectively; scavenging pump means for continuously returning oil from said sump to said input oil pipe; and means connecting said output pipe to the input of said primary oil pump.
Claim 3
Dependent Claim
38 words
Apparatus according to claim 1 wherein said input and output fittings are disposed on one planar surface of said cartridge and said cartridge mounting includes a planar surface adapted to abut said mounting planar surface of said cartridge.
Claim 4
Dependent Claim
45 words
Apparatus according to claim 2 wherein the ends of said input and output oil pipes extend outwardly from said planar surface of said mounting and each of said fittings comprises a a tubular orifice and a resilient, split-diaphragm self-seal adapted to receive said pipe therethrough.
Claim 5
Dependent Claim
18 words
Apparatus according to claim 3 comprising at least one O-ring disposed between said pipe and said tubular orifice.
Claim 6
Dependent Claim
116 words
A quick-change oil filter/reservoir system for an internal combustion engine having a primary oil pump and an oil sump comprising: a cartridge containing an oil filter element and a supply of oil, said cartridge having female input and output fittings disposed on one planar surface, said fittings being self-sealing and non-manipulative; a cartridge mounting having quick-release fasteners for releasably carrying said cartridge, said mounting including a planar surface having a male input and output oil pipes corresponding to and engageable by said input and output fittings, respectively; scavanging pump means for continuously returning oil from said sump to said input oil pipe; and means connecting said output pipe to the input of said primary oil pump.
Claim 7
Dependent Claim
116 words
A quick-change oil filter/reservoir system for an internal combustion engine having a primary oil pump and an oil sump comprising: a cartridge containing an oil filter element and a supply of oil, said cartridge having female input and output fittings disposed on one planar surface, said fittings being self-sealing and non-manipulative; a cartridge mounting having quick-release fasteners for releasably carrying said cartridge, said mounting including a planar surface having a male input and output oil pipes corresponding to and engageable by said input and output fittings, respectively; scavanging pump means for continuously returning oil from said sump to said input oil pipe; and means connecting said output pipe to the input of said primary oil pump.
Claim 8
Dependent Claim
27 words
Apparatus according to claim 5 wherein each of said fittings comprises a tubular female orifice and a resilient, split-diaphragm self-seal adapted to receive said male pipe therethrough.
Claim 9
Dependent Claim
48 words
Apparatus according to claim 5 wherein said cartridge comprises a generally hollow cylinder, said filter element being cylindrical and coaxial therewith to define a peripheral region exterior of said filter element for receiving scavanged oil and a central region interior of said filter element for receiving filtered oil.
Claim 10
Dependent Claim
23 words
Apparatus according to claim 7 wherein said input fitting communicates with said exterior portion and said output fitting communicates with said central portion.
Claim 11
Dependent Claim
48 words
Apparatus according to claim 5 wherein said cartridge comprises two joined hollow, abutting cylinders, one of said cylinders comprising a filter chamber and the other of said cylinders comprising a reservoir chamber and an aperture therebetween for supplying filtered oil from said filter chamber to said reservoir chamber.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |