Patent US4875551A successfully refreshed from Google Patents.
US4875551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-lubricant oil pressure adapter
Assignee: RPM Industries Inc
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Filing: 1987-10-13
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Granted: 1989-10-24
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Expires: 2007-10-13
Abstract
Abstract A pre-lubricant oil pressure adapter that enables oil and oil pressure to be supplied to an engine before it is engaged to crank. The adapter is comprised of an oil pump that is linked to an oil filter, and both of these are in turn linked to an oil system of an engine. Oil from the engine oil system is able to flow into the filter through the linkage, as well as oil from the oil pump. The oil cleaned by the filter passes from the filter back into the engine. When the engine is started, a delay switch allows the pump to operate but not the engine. The switch senses when the pressure is great enough in the engine and at that time allows the engine to engage. The pump is then disengaged. In another embodiment, the oil pump is disposed in the engine and is fluidically connected to an existing oil pump of an engine to provide oil pressure to the engine before it is engaged to crank.
Inventors
- 👤 John F. Lulich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/02; F01M5/025; F01M1/00; F01M1/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
248 words
An apparatus for providing oil and oil pressure to an engine having an oil system before the engine engages comprising: an oil filter; an oil pump for pumping oil and raising the oil pressure in the engine; a linkage having at least one linkage chamber for linking the oil filter and the oil pump so oil pumped by the oil pump is provided only to the oil filter via the linkage chamber which fluidically connects the oil pump and the oil filter, said linkage also linking the oil filter and the engine oil system at a first location, said linkage having at least a first opening and a second opening, said second opening allowing oil to pass from the engine oil system to the oil filter to be filtered; an O-ring assembly that has a channel, said O-ring assembly being mounted in the engine and connecting the engine oil system at the first location with the linkage by way of the first opening so oil that has been filtered by the oil filter passes through the channel of the O-ring assembly into the engine oil system; means for starting the pump and engine; means for delaying the starting of the engine until there is oil pressure in the engine oil system, said delay means disengaging the pump after the engine engages, said delay means electrically connected to the starting means; and supply means for fluidically connecting the oil pump to the engine oil system at a second location.
Claim 2
Independent Claim
248 words
An apparatus for providing oil and oil pressure to an engine having an oil system before the engine engages comprising: an oil filter; an oil pump for pumping oil and raising the oil pressure in the engine; a linkage having at least one linkage chamber for linking the oil filter and the oil pump so oil pumped by the oil pump is provided only to the oil filter via the linkage chamber which fluidically connects the oil pump and the oil filter, said linkage also linking the oil filter and the engine oil system at a first location, said linkage having at least a first opening and a second opening, said second opening allowing oil to pass from the engine oil system to the oil filter to be filtered; an O-ring assembly that has a channel, said O-ring assembly being mounted in the engine and connecting the engine oil system at the first location with the linkage by way of the first opening so oil that has been filtered by the oil filter passes through the channel of the O-ring assembly into the engine oil system; means for starting the pump and engine; means for delaying the starting of the engine until there is oil pressure in the engine oil system, said delay means disengaging the pump after the engine engages, said delay means electrically connected to the starting means; and supply means for fluidically connecting the oil pump to the engine oil system at a second location.
Claim 3
Dependent Claim
111 words
An apparatus as described in claim 1 wherein the engine oil system at the first location has an engine oil system intake channel communicating with the O-ring and an outtake channel communicating with the second opening and wherein the oil filter includes a filter element circumferentially lining the filter and a hollow core, said oil filter being connected to the linkage through the O-ring assembly so oil from the outtake channel flows through the second opening of the linkage into the filter element and is cleaned, and oil cleaned by the filter element passes into the core and through the O-ring assembly into the intake channel of the engine oil system.
Claim 4
Dependent Claim
73 words
An apparatus as described in claim 2 wherein the oil pump is an electric oil pump having an inlet and an outlet, said outlet being connected to the linkage so oil that is pumped passes through the outlet into the linkage, said intake having a check valve disposed in it so oil can be drawn into the pump through the intake from the supply means but oil cannot flow back through the intake.
Claim 5
Dependent Claim
41 words
An apparatus as described in claim 3 wherein the linkage has at least one chamber that connects the pump with the oil filter so oil pumped by the pump flows through the chamber into the filter element of the oil filter.
Claim 6
Dependent Claim
65 words
An apparatus as described in claim 4 wherein the engine has an oil drain pan where oil in the engine oil system collects, and wherein the supply means is a tee connection between the oil drain pan and a hose that also connects to the check valve of the oil pump so oil can be drawn by the oil pump from the oil drain pan.
Claim 7
Dependent Claim
103 words
An apparatus as described in claim 5 wherein the delay means includes a plunger that is positioned in the engine oil system intake channel, and a switch, said switch being open and allowing electricity to pass only to the oil pump to operate only said oil pump when the oil pressure is below a desired oil pressure, but when the pressure in the intake channel is above the desired oil pressure and is great enough to push the plunger upwards, the switch is closed and electricity is allowed to pass only to the engine to actuate the engine, thus stopping the oil pump.
Claim 8
Dependent Claim
157 words
A pre-lubricant oil pressure apparatus comprising: an oil filter; an oil pump; a linkage having at least one linkage chamber for linking the oil filter and the oil pump so oil pumped by the oil pump is provided only to the oil filter via the linkage chamber which fluidically connects the oil pump and the oil filter, said linkage having at least a first opening to allow filtered oil to pass out of the oil filter and out the linkage, and at least a second opening to allow additional oil to enter the oil filter to be cleaned; means for starting the oil pump; means for delaying electricity to pass to a starter of an engine until the oil pump operates for at least a predetermined time, said delay means disengaging the oil pump after the predetermined time, said delay means electrically connected to the starting means; and supply means for providing oil to the oil pump.
Claim 9
Dependent Claim
157 words
A pre-lubricant oil pressure apparatus comprising: an oil filter; an oil pump; a linkage having at least one linkage chamber for linking the oil filter and the oil pump so oil pumped by the oil pump is provided only to the oil filter via the linkage chamber which fluidically connects the oil pump and the oil filter, said linkage having at least a first opening to allow filtered oil to pass out of the oil filter and out the linkage, and at least a second opening to allow additional oil to enter the oil filter to be cleaned; means for starting the oil pump; means for delaying electricity to pass to a starter of an engine until the oil pump operates for at least a predetermined time, said delay means disengaging the oil pump after the predetermined time, said delay means electrically connected to the starting means; and supply means for providing oil to the oil pump.
Claim 10
Dependent Claim
73 words
An apparatus as described in claim 7, wherein the pump is an electric oil pump having an inlet and an outlet, said outlet being connected to the linkage so oil that is pumped passes through the outlet into the linkage, said intake having a check valve disposed in it so oil can be drawn into the oil pump through the intake from the supply means but oil cannot flow back through the intake.
Claim 11
Dependent Claim
43 words
An apparatus as described in claim 8, wherein the linkage has at least one chamber that connects the oil pump with the oil filter so oil pumped by the oil pump flows through the chamber into the filter element of the oil filter.
Claim 12
Dependent Claim
45 words
An apparatus as described in claim 9, wherein the supply means is a tee connection between an oil source and a hose that also connects to the check valve of the oil pump so oil can be drawn by the pump from the oil source.
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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) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |