Patent US3869905A successfully refreshed from Google Patents.
US3869905A
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Apparatus and method for testing engine oil pressure
Assignee: Individual
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Filing: 1973-11-19
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Granted: 1975-03-11
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Expires: 1993-11-19
Abstract
Abstract An apparatus and method for use on an engine to isolate the oil pump assembly from the engine''s lubricating system for indicating which of these is producing an oil pressure problem.
Inventors
- 👤 Marshall T Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:23
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/18; F01M1/20; G; G01; G01M; G01M15/00; G01M15/04; G01M15/09
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
143 words
A method for testing oil pressure in an engine to determine if low oil pressure is being caused by a faulty oil pump assembly or by a faulty engine lubricating system, said method comprising the steps of: a. removing the spin-on oil filter from the oil filter mounting pad of the engine to expose the oil inlet passage, the oil outlet passage and the oil chamber thereof; b. sealing the oil chamber of said mounting pad to contain the oil supplied thereto from the oil pump assembly; c. blocking the oil outlet passage of said mounting pad to prevent oil from being supplied therefrom to the engine lubricating system; and d. sensing the pressure of the oil contained within the oil chamber of said mounting pad with the engine running to determine if the oil pump assembly is operating at its rated capacity.
Claim 2
Independent Claim
143 words
A method for testing oil pressure in an engine to determine if low oil pressure is being caused by a faulty oil pump assembly or by a faulty engine lubricating system, said method comprising the steps of: a. removing the spin-on oil filter from the oil filter mounting pad of the engine to expose the oil inlet passage, the oil outlet passage and the oil chamber thereof; b. sealing the oil chamber of said mounting pad to contain the oil supplied thereto from the oil pump assembly; c. blocking the oil outlet passage of said mounting pad to prevent oil from being supplied therefrom to the engine lubricating system; and d. sensing the pressure of the oil contained within the oil chamber of said mounting pad with the engine running to determine if the oil pump assembly is operating at its rated capacity.
Claim 3
Independent Claim
143 words
A method for testing oil pressure in an engine to determine if low oil pressure is being caused by a faulty oil pump assembly or by a faulty engine lubricating system, said method comprising the steps of: a. removing the spin-on oil filter from the oil filter mounting pad of the engine to expose the oil inlet passage, the oil outlet passage and the oil chamber thereof; b. sealing the oil chamber of said mounting pad to contain the oil supplied thereto from the oil pump assembly; c. blocking the oil outlet passage of said mounting pad to prevent oil from being supplied therefrom to the engine lubricating system; and d. sensing the pressure of the oil contained within the oil chamber of said mounting pad with the engine running to determine if the oil pump assembly is operating at its rated capacity.
Claim 4
Independent Claim
143 words
A method for testing oil pressure in an engine to determine if low oil pressure is being caused by a faulty oil pump assembly or by a faulty engine lubricating system, said method comprising the steps of: a. removing the spin-on oil filter from the oil filter mounting pad of the engine to expose the oil inlet passage, the oil outlet passage and the oil chamber thereof; b. sealing the oil chamber of said mounting pad to contain the oil supplied thereto from the oil pump assembly; c. blocking the oil outlet passage of said mounting pad to prevent oil from being supplied therefrom to the engine lubricating system; and d. sensing the pressure of the oil contained within the oil chamber of said mounting pad with the engine running to determine if the oil pump assembly is operating at its rated capacity.
Claim 5
Dependent Claim
42 words
A method for testing oil pressure as claimed in claim 1 comprising the additional step of plugging the filter by-pass valve, when said mounting pad is supplied with a by-pass valve, to prevent oil from passing therethrough to the engine lubricating system.
Claim 6
Independent Claim
157 words
An apparatus for determining if low oil pressure in an engine is due to a faulty oil pump assembly or due to a faulty engine lubricating system comprising in combination: a. an engine having an oil filter mounting pad in which an oil chamber is pRovided for receiving oil from the oil pump assembly of said engine and from which oil is supplied to the lubricated parts of said engine through an externally threaded stud protruding from said mounting pad; b. adapter means sealingly demountably attached to the mounting pad of said engine for containing the oil supplied to the oil chamber of the mounting pad and preventing that oil from being supplied therefrom to the lubricated parts of said engine; and c. pressure indicating means coupled to said adapter means and in communication with the oil chamber of said mounting pad for sensing the pressure of the oil contained therein and giving a visual indication thereof.
Claim 7
Independent Claim
157 words
An apparatus for determining if low oil pressure in an engine is due to a faulty oil pump assembly or due to a faulty engine lubricating system comprising in combination: a. an engine having an oil filter mounting pad in which an oil chamber is pRovided for receiving oil from the oil pump assembly of said engine and from which oil is supplied to the lubricated parts of said engine through an externally threaded stud protruding from said mounting pad; b. adapter means sealingly demountably attached to the mounting pad of said engine for containing the oil supplied to the oil chamber of the mounting pad and preventing that oil from being supplied therefrom to the lubricated parts of said engine; and c. pressure indicating means coupled to said adapter means and in communication with the oil chamber of said mounting pad for sensing the pressure of the oil contained therein and giving a visual indication thereof.
Claim 8
Dependent Claim
114 words
An apparatus as claimed in claim 3 wherein said adapter means comprises: a. a plate having an aperture formed therethrough for receiving the stud of said mounting pad, said plate having an oil passage formed therethrough to which said pressure indicating means is coupled; b. a gasket affixed on one surface of said plate for forming a seal between said plate and said mounting pad; and c. a mounting nut within the aperture of said plate and in threaded engagement with the stud of said mounting pad, said nut adapted to sealingly demountably attach said plate to said mounting pad and to block the flow of oil through the stud of said mounting pad.
Claim 9
Dependent Claim
64 words
An apparatus as claimed in claim 4 wherein said mounting nut comprises: a. a head having means thereon by which said head may be gripped for axial rotation; and b. at least one internally threaded boss integral with said head and extending axially therefrom, said boss having a circumference which is smaller than the peripheral dimension of said head to form a shoulder therebetween.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |