US3763960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating system for internal combustion engines
Assignee: Hoechst AG
•
Filing: 1971-04-05
•
Granted: 1973-10-09
•
Expires: 1991-04-05
Abstract
Abstract A lubricating system for internal combustion engines, particularly for automobile engines, has a removably mounted reservoir for lubricating fluid, a dry sump, and an electric pump which draws lubricating fluid and air from the dry sump to the reservoir immediately prior to the first turn of the engine and maintains the air and lubricating fluid in the reservoir under pressure from immediately prior to the first turn of the engine and during the operation thereof to supply lubricating fluid to the lubricating points in the engine.
Inventors
- 👤 V John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:37
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/02; F01M11/00; F01M11/04; F01M2011/0483
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
An internal combustion engine lubricating system containing air and lubricating fluid therein comprising a dry sump, reservoir means for containing pressurized air and substantially all of the lubricating fluid in said system, conduit means connecting said reservoir to said engine and electric pump means for drawing lubricating fluid and air from said dry sump to said reservoir and for maintaining the air and lubricating fluid in said reservoir under pressure from at least immediately prior to the first turn of the engine and during the operation thereof whereby lubricating fluid is supplied from the reservoir to said engine through said conduit means immediately prior to the first turn of the engine and while the engine is running.
Claim 2
Dependent Claim
117 words
An internal combustion engine lubricating system containing air and lubricating fluid therein comprising a dry sump, reservoir means for containing pressurized air and substantially all of the lubricating fluid in said system, conduit means connecting said reservoir to said engine and electric pump means for drawing lubricating fluid and air from said dry sump to said reservoir and for maintaining the air and lubricating fluid in said reservoir under pressure from at least immediately prior to the first turn of the engine and during the operation thereof whereby lubricating fluid is supplied from the reservoir to said engine through said conduit means immediately prior to the first turn of the engine and while the engine is running.
Claim 3
Dependent Claim
18 words
A lubricating system as defined in claim 1 wherein said reservoir means is removably mounted on said engine.
Claim 4
Dependent Claim
18 words
A lubricating system as defined in claim 2 including an air relief valve mounted on said reservoir means.
Claim 5
Dependent Claim
15 words
A lubricating system as defined in claim 3 wherein said reservoir includes a filter bed.
Claim 6
Dependent Claim
67 words
A lubricating system as defined in claim 1 wherein said internal combustion engine includes an electric starter having a primary coil, said electric pump means being operatively connected to the primary coil of said starter whereby said pump means begins to operate prior to the first turn of said engine, thereby to supply lubricating fluid from said reservoir to said engine prior to the first turn thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |