US3583525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine preoiler
Assignee: Individual
•
Filing: 1968-12-30
•
Granted: 1971-06-08
•
Expires: 1988-12-30
Abstract
Abstract A preliminary lubricating device for internal combustion engines is described in which lubricant is stored under pressure during off periods of the engine to be released upon closing of the starting circuit so that lubricant will flow immediately to parts of the engine which normally do not receive lubrication until the conventional lubricating system has built-up pressure. A pressurizable reservoir is in communication with the lubricating system of the engine and flow of lubricant into and from the reservoir is controlled by a plurality of pistons acting in a valve controlled by a solenoid which in turn is actuated by an electrical system of the starter circuit. The pistons are disposed coaxially on a piston shaft, are biased to a normally closed position, and cooperate to control the direction of flow of lubricant into and from the reservoir.
Inventors
- 👤 Clifton R Holcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:20
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/02; F01M5/025; F01M2005/028
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
241 words
A preliminary lubricating device for an engine having an electrical circuit and a pressurizable lubricating system, comprising: a lubricant reservoir having a first opening therein to permit passage of lubricant thereinto and therefrom and means to provide pressurizable storage of lubricant, a valve body depending from said reservoir having an inlet and an outlet, said inlet communicating with said opening of said reservoir, said outlet communicating with the lubrication system of said engine, three coaxial bores disposed so thaT a first and third of said bores each communicates with a middle one of said bores and said middle bore further communicates with said inlet, a piston shaft slidably disposed within said bores, valve means arranged on said shaft, including a valve member pinned to said shaft within said first bore, a first piston member slidably disposed on said shaft within said middle bore, and a second piston pinned to said shaft within said third bore, means biasing the valve member and the first piston to a closed position, bypass means communicating with said first and third bores, and solenoid means having a field coil connected in series to said electrical circuit, and a plunger leverably connected to said piston shaft, so that upon actuation of said solenoid means said piston shaft responds to movement of said plunger to move said valve member and said second piston to open position allowing pressurized lubricant to flow from said reservoir into said lubrication system.
Claim 2
Dependent Claim
241 words
A preliminary lubricating device for an engine having an electrical circuit and a pressurizable lubricating system, comprising: a lubricant reservoir having a first opening therein to permit passage of lubricant thereinto and therefrom and means to provide pressurizable storage of lubricant, a valve body depending from said reservoir having an inlet and an outlet, said inlet communicating with said opening of said reservoir, said outlet communicating with the lubrication system of said engine, three coaxial bores disposed so thaT a first and third of said bores each communicates with a middle one of said bores and said middle bore further communicates with said inlet, a piston shaft slidably disposed within said bores, valve means arranged on said shaft, including a valve member pinned to said shaft within said first bore, a first piston member slidably disposed on said shaft within said middle bore, and a second piston pinned to said shaft within said third bore, means biasing the valve member and the first piston to a closed position, bypass means communicating with said first and third bores, and solenoid means having a field coil connected in series to said electrical circuit, and a plunger leverably connected to said piston shaft, so that upon actuation of said solenoid means said piston shaft responds to movement of said plunger to move said valve member and said second piston to open position allowing pressurized lubricant to flow from said reservoir into said lubrication system.
Claim 3
Dependent Claim
37 words
A preliminary lubrication device as described in claim 1 wherein: said electrical circuit includes an ignition circuit, said ignition circuit further includes a starter circuit, and said solenoid means is in series relationship to said starter circuit.
Claim 4
Dependent Claim
78 words
A preliminary lubricating device as described in claim 2 wherein: said means to provide pressurized storage of lubricant includes a resilient diaphragm dividing said reservoir into a first and a second compartment, said first compartment including said first opening in said reservoir, a second opening in said reservoir communicating with said second compartment to permit introduction of pressurizing fluid into said second compartment, and valve means in said second opening to control the flow of said pressurizing fluid.
Claim 5
Dependent Claim
28 words
A preliminary lubricating device as described in claim 3 wherein: said valve body further includes a resilient sealing member disposed around said piston shaft within said third bore.
Claim 6
Dependent Claim
107 words
A preliminary lubricating device as described in claim 4 wherein: said closure means includes a resilient member disposed within a circumferential channel in said first bore, a first wall of said channel having a rounded edge acting as stop means to limit movement of said piston after contact of said piston with said resilient member. 6, A preliminary lubricating device as described in claim 5 wherein: said means biasing said valve member and said first piston to closed positions includes a first coil spring disposed around said piston shaft within said middle bore and a second coil spring disposed around said piston shaft within said third bore.
Claim 7
Dependent Claim
24 words
A preliminary lubricating device as described in claim 6 wherein: said first coil spring is more easily compressible than is said second coil spring.
Claim 8
Dependent Claim
34 words
A preliminary lubricating device as described in claim 7 wherein: said solenoid means includes means biasing said plunger to a first position to assist in closing of said valve member and said first piston.
Claim 9
Dependent Claim
31 words
A preliminary lubricating device as described in claim 8 wherein: said second piston includes at least one circumferential groove to permit flow of a minor amount of lubricant around said piston.
Claim 10
Dependent Claim
55 words
A preliminary lubricating device as described in claim 1 wherein: said solenoid includes a spool member upon which said field coil is disposed, a metallic member molded integrally with a flange of said spool, and means biasing said plunger to a first position to assist in closing of said valve member and said first piston.
Claim 11
Dependent Claim
151 words
A preliminary lubricating device mountable in any position relative to an engine having an electric starter ignition system and a pressure-lubricating system comprising: a lubricating oil accumulator having a flexible divider therein defining first and second substantially sealed chambers, a valve body having an outlet from said first chamber communicable with said engine pressurE-lubricating system, valve means in said valve body normally closing said outlet and sealing said first chamber, means to actuate said valve to open said outlet upon actuation of said starter ignition system, means associated with said valve means to maintain said valve open for flow from said first chamber into said outlet after said actuation, by the flow of said lubricant from said reservoir, means to refill said reservoir to a predetermined pressure from said lubricating system and close said valve means until the next start actuation, and means to apply predetermined pressure into the second chamber.
Claim 12
Dependent Claim
151 words
A preliminary lubricating device mountable in any position relative to an engine having an electric starter ignition system and a pressure-lubricating system comprising: a lubricating oil accumulator having a flexible divider therein defining first and second substantially sealed chambers, a valve body having an outlet from said first chamber communicable with said engine pressurE-lubricating system, valve means in said valve body normally closing said outlet and sealing said first chamber, means to actuate said valve to open said outlet upon actuation of said starter ignition system, means associated with said valve means to maintain said valve open for flow from said first chamber into said outlet after said actuation, by the flow of said lubricant from said reservoir, means to refill said reservoir to a predetermined pressure from said lubricating system and close said valve means until the next start actuation, and means to apply predetermined pressure into the second chamber.
References Cited (Backward Citations)
US2033992A
Cited
US2755787A
Cited
US2867203A
Cited
US3425404A
Cited
US3422807A
Cited
US3391900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |