US4112910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-lube device
Assignee: PRELUBE CORP
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Filing: 1976-04-23
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Granted: 1978-09-12
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Expires: 1996-04-23
Abstract
Abstract A pre-lube device for internal combustion engines. A quantity of oil, heated if desired, is stored in a chamber. Upon activation of the ignition for the engine, an electromagnet is energized, releasing a holding device for a coiled power spring which allows the spring to fully extend. The extending spring drives a piston located within the oil chamber to a fully extended position, thereby forcibly evacuating the oil from the chamber through a conduit into and throughout the engine galley in order to fully lubricate the engine prior to start, for the purpose of minimizing wear on the engine.
Inventors
- 👤 Donald W. Percy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:56
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/02; F01M5/025; F01M2005/028
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
270 words
A device for lubricating an internal combustion engine upon ignition and prior to the start thereof, comprising: chamber means for storing a quantity of oil of sufficient amount to prelubricate said engine, said chamber means being adapted for fluid communication with said engine, pump means in fluid communication with an oil pan of the engine and with said chamber means for the supplying oil under pressure to said chamber, rigid moveable piston means disposed within said chamber for evacuating oil from the chamber to said engine, said piston means having an elongated rod associated therewith; said piston rod having a head mounted to an end surface thereof, power chamber means disposed adjacent to said oil chamber means, said power chamber means including power spring means, at least one surface of which abuts said piston means for moving the piston means under pressure within said oil chamber means in order to evacuate oil therefrom, and locking means for releaseably receiving said piston rod head, comprising moveable roller means adapted to receive and secure said head said roller means comprising multiple rollers adapted to move radially outwardly from the diameter of said piston rod and adapted to secure said head around the circumference thereof, in order to secure said piston means associated therewith against movement such that when said ignition is actuated it causes movement of said roller means thereby releasing said head and said power spring means, whereby said piston means is moved under pressure in such a manner as to evacuate the oil from said chamber into and throughout said engine in order to lubricate the engine prior to start.
Claim 2
Independent Claim
270 words
A device for lubricating an internal combustion engine upon ignition and prior to the start thereof, comprising: chamber means for storing a quantity of oil of sufficient amount to prelubricate said engine, said chamber means being adapted for fluid communication with said engine, pump means in fluid communication with an oil pan of the engine and with said chamber means for the supplying oil under pressure to said chamber, rigid moveable piston means disposed within said chamber for evacuating oil from the chamber to said engine, said piston means having an elongated rod associated therewith; said piston rod having a head mounted to an end surface thereof, power chamber means disposed adjacent to said oil chamber means, said power chamber means including power spring means, at least one surface of which abuts said piston means for moving the piston means under pressure within said oil chamber means in order to evacuate oil therefrom, and locking means for releaseably receiving said piston rod head, comprising moveable roller means adapted to receive and secure said head said roller means comprising multiple rollers adapted to move radially outwardly from the diameter of said piston rod and adapted to secure said head around the circumference thereof, in order to secure said piston means associated therewith against movement such that when said ignition is actuated it causes movement of said roller means thereby releasing said head and said power spring means, whereby said piston means is moved under pressure in such a manner as to evacuate the oil from said chamber into and throughout said engine in order to lubricate the engine prior to start.
Claim 3
Dependent Claim
40 words
The device of claim 1 in which said locking means includes a hinged arm associated with said roller means which is adapted to move said roller means upon actuation of said ignition for the purpose of releasing said piston rod-head.
Claim 4
Dependent Claim
39 words
The device of claim 2 in which said hinged arm is in moveable contact with said roller means by a plate secured at one surface to said arm and at another surface to a housing for said roller means.
Claim 5
Dependent Claim
42 words
The device of claim 3 in which a spring means is associated with said roller means, said spring means being mounted to a support for said roller housing, said spring means being adapted to lock the roller means to said piston rod-head.
Claim 6
Dependent Claim
48 words
The device of claim 4 including solenoid means adapted to be energized upon actuation of said ignition, whereby the said movement of a plunger in said solenoid causes said hinged arm to bend, thereby moving said plate and said roller means, whereby said piston rod head is released.
Claim 7
Dependent Claim
58 words
The device of claim 1 in which said power spring is adapted to generate at least 900 pounds of pressure on said piston means upon release of said piston rod head, whereby oil is forcibly evacuated from said chamber into said engine substantially instantaneously upon release of said head, in order to lubricate the engine prior to start.
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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |