Patent US4909205A successfully refreshed from Google Patents.
US4909205A
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US
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Method and apparatus for changing engine oil
Assignee: Individual
•
Filing: 1989-01-19
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Granted: 1990-03-20
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Expires: 2009-01-19
Abstract
Abstract Disclosed herein is a method of and apparatus for changing oil and an oil filter in an engine or the like having an oil sump and a mount for an oil filter. The method includes the steps of draining or adding oil to the oil sump to or from an external reservoir by use of a manually or electrically actuated pumping action. Simultaneously, if desired, the method includes the steps of changing the oil filter at a remote disconnected position. The method can be carried out by various apparatus, each of which has a first portion permanently connected to the engine to establish oil communication from the existent oil sump and filter mount to quick-disconnect couplers joined to a removable second portion including an external oil reservoir and a mount for an oil filter.
Inventors
- 👤 Edson P. Bewley, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:38
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M11/0458
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
50 words
The method of changing oil in an engine or the like having an oil sump which comprises the steps of connecting an external reservoir containing clean oil to the oil sump, pumping the clean oil to the oil sump, and subsequently pumping oil after use back to said external reservoir.
Claim 2
Independent Claim
50 words
The method of changing oil in an engine or the like having an oil sump which comprises the steps of connecting an external reservoir containing clean oil to the oil sump, pumping the clean oil to the oil sump, and subsequently pumping oil after use back to said external reservoir.
Claim 3
Dependent Claim
22 words
The method of changing oil according to claim 1, which comprises the initial step of draining used oil from the oil sump.
Claim 4
Dependent Claim
47 words
The method of changing oil according to claim 1 which comprises energizing the pumping action in one flow direction to pump the clean oil into the oil sump, and energizing the pumping action in the opposite flow direction to pump used oil out of the oil sump.
Claim 5
Dependent Claim
19 words
The method of changing oil according to claim 1 wherein said pumping steps are both achieved by manual actuation.
Claim 6
Dependent Claim
19 words
The method of changing oil according to claim 1 wherein said pumping steps are both achieved by electrical actuation.
Claim 7
Dependent Claim
29 words
The method of changing oil according to claim 1 which comprises simultaneously connecting an oil filter to the engine while connecting the external oil reservoir to the oil sump.
Claim 8
Dependent Claim
19 words
The method of changing oil according to claim 6 wherein said oil filter is releasably connected to the engine.
Claim 9
Dependent Claim
21 words
The method of changing oil according to claim 1 wherein said external oil reservoir is connected releasably to the oil sump.
Claim 10
Dependent Claim
45 words
Apparatus for changing oil in an engine or the like having an oil sump which comprises an oil reservoir external to the engine, means establishing oil communication between said reservoir and the engine sump, and means for pumping oil between said reservoir and the sump.
Claim 11
Dependent Claim
45 words
Apparatus for changing oil in an engine or the like having an oil sump which comprises an oil reservoir external to the engine, means establishing oil communication between said reservoir and the engine sump, and means for pumping oil between said reservoir and the sump.
Claim 12
Dependent Claim
18 words
Apparatus for changing oil according to claim 9 wherein said reservoir is a container with a removable cap.
Claim 13
Dependent Claim
16 words
Apparatus for changing oil according to claim 9 wherein said reservoir is a flexible, collapsible bag.
Claim 14
Dependent Claim
25 words
Apparatus for changing oil according to claim 9 wherein said means for establishing oil communication includes a quick-disconnect coupling between said reservoir and the sump.
Claim 15
Dependent Claim
13 words
Apparatus for changing oil according to claim 9 wherein said pump is reversible.
Claim 16
Dependent Claim
14 words
Apparatus for changing oil according to claim 13 wherein said pump is electrically actuated.
Claim 17
Dependent Claim
14 words
Apparatus for changing oil according to claim 13 wherein said pump is manually actuated.
Claim 18
Dependent Claim
92 words
Apparatus for changing oil and an oil filter in an engine having an oil sump and an oil filter mount which comprises a first portion adapted for oil communication with the sump and the filter mount and establishing oil communication with external quick-disconnect couplers, pumping means in said first portion for establishing oil flow into and out of the sump and a second portion connected to said quick-disconnect couplers and including an external oil reservoir connected to one of said couplers, and an oil filter connected to another pair of said couplers.
Claim 19
Dependent Claim
92 words
Apparatus for changing oil and an oil filter in an engine having an oil sump and an oil filter mount which comprises a first portion adapted for oil communication with the sump and the filter mount and establishing oil communication with external quick-disconnect couplers, pumping means in said first portion for establishing oil flow into and out of the sump and a second portion connected to said quick-disconnect couplers and including an external oil reservoir connected to one of said couplers, and an oil filter connected to another pair of said couplers.
Claim 20
Dependent Claim
21 words
Apparatus for changing oil and an oil filter according to claim 16 wherein said oil filter is a standard oil filter.
Claim 21
Dependent Claim
45 words
Apparatus for changing oil and an oil filter according to claim 16 wherein said external oil reservoir includes an annular bag, and said oil filter is an annular unit both of said bag and said filter are adapted for mounting around the engine carburetor throat.
Claim 22
Dependent Claim
30 words
Apparatus for changing oil and an oil filter according to claim 16 which comprises a swivel mount for said first portion allowing angular adjustment of said second portion relative thereto.
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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |