Patent US3556070A successfully refreshed from Google Patents.
US3556070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid valve pre-oiler
Assignee: Individual
•
Filing: 1968-12-30
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Granted: 1971-01-19
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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 paraboloidal piston acting in a valve controlled by a solenoid which in turn is actuated by an electrical system of the starter circuit. The paraboloidal surface of the piston assists in moving the piston to an open position in the valve body in reaction to the flow of lubricant in two directions through the valve body.
Inventors
- 👤 Clifton R Holcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:31
CPC Classifications
F; F01; F01M; F01M1/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
218 words
A preliminary lubricating device for an engine having an electrical circuit and a pressurizable lubricating system, comprising: a lubricant reservoir having an opening therein communicating with a discharge conduit depending from said reservoir, said reservoir having means to provide pressurized storage of lubricant; a valve body depending from said reservoir having a first bore communicating with a line of said lubricating system and a second bore communicating with both said first bore and said discharge conduit; a piston within said second bore and having a medial substantially paraboloidal surface exposable to impinging flow of lubricant from either said first bore or said discharge conduit into said second bore, said piston surface terminating at one end with an anterior spheroidal surface abutting closure means relative to said first bore to constitute said first closed position; a shaft extending from the other end of said piston sealably exteriorly of said valve body; a solenoid valve having a field coil connected in series to said electrical circuit, said solenoid including an armature coaxial with and attached to said piston shaft; and means biasing said piston to a normally closed position, said means being responsive to actuation of said solenoid wherein said piston is brought to an open position allowing said pressurized lubricant to flow from said reservoir into said lubricating system.
Claim 2
Dependent Claim
218 words
A preliminary lubricating device for an engine having an electrical circuit and a pressurizable lubricating system, comprising: a lubricant reservoir having an opening therein communicating with a discharge conduit depending from said reservoir, said reservoir having means to provide pressurized storage of lubricant; a valve body depending from said reservoir having a first bore communicating with a line of said lubricating system and a second bore communicating with both said first bore and said discharge conduit; a piston within said second bore and having a medial substantially paraboloidal surface exposable to impinging flow of lubricant from either said first bore or said discharge conduit into said second bore, said piston surface terminating at one end with an anterior spheroidal surface abutting closure means relative to said first bore to constitute said first closed position; a shaft extending from the other end of said piston sealably exteriorly of said valve body; a solenoid valve having a field coil connected in series to said electrical circuit, said solenoid including an armature coaxial with and attached to said piston shaft; and means biasing said piston to a normally closed position, said means being responsive to actuation of said solenoid wherein said piston is brought to an open position allowing said pressurized lubricant to flow from said reservoir into said lubricating system.
Claim 3
Dependent Claim
36 words
A preliminary lubricating 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 is in series relationship to said starter circuit.
Claim 4
Dependent Claim
61 words
A preliminary lubricating device as described in claim 2 wherein: said means to provide pressurized storage of lubricant in said reservoir includes a resilient diaphragm dividing said reservoir into a first and a second compartment, a rigid pressure plate abutting said diaphragm, and spring means abutting said plate and biasing said plate and said diaphragm toward said opening in said reservoir.
Claim 5
Dependent Claim
55 words
A preliminary lubricating device as described in claim 3 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.
Claim 6
Dependent Claim
28 words
A preliminary lubricating device as described in claim 4 wherein: said means biasing said piston to a normally closed position includes coil spring means disposed around said armature.
Claim 7
Dependent Claim
29 words
A preliminary lubricating device as described in claim 5 wherein: said means biasing said piston to a normally closed position includes coil spring means disposed around said piston shaft.
Claim 8
Dependent Claim
18 words
A preliminary lubricating device as described in claim 1 including means providing for manual release of said piston.
Claim 9
Dependent Claim
23 words
A preliminary lubricating device as described in claim 1 wherein said solenoid armature is attached to said piston shaft through mechanical advantage linkage.
References Cited (Backward Citations)
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US2755787A
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US2837174A
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US2867203A
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |