US3929110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication system of a two-stroke internal combustion engine
Assignee: Individual
•
Filing: 1974-01-24
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Granted: 1975-12-30
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Expires: 1994-01-24
Abstract
Abstract In the disclosed lubricating system for an internal combustion two-stroke engine there is incorporated a positive displacement worm-type pump of which the worm is directly connected with the crankshaft of the associated engine. In this way the reliability of the performance of the lubricating system is enhanced.
Inventors
- 👤 Ivan Yakovlevich Raikov
- 👤 Pavel Andreevich Ivaschenko
- 👤 Alexandr Nikolaevich Judin
- 👤 Georgy Lvovich Pisarev
- 👤 Vladimir Yakovlevich Roslyakov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:15
CPC Classifications
F; F01; F01M; F01M3/00; F01M3/02; B; B65; B65C; B65C2210/00; B65C2210/0067; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
140 words
A lubricating system incorporable in a two-stroke internal combustion engine including means for introducing fuel into said engine through a carburetor, said system including a worm-type oil pump to effect continuous positive supply of a liquid lubricant into said engine, said oil pump having a worm connected directly to the crankshaft of said engine and a metering device comprising a smooth sleeve and a helically threaded stud received in said sleeve, the thread of said stud and the walls of said sleeve defining a throttling passage; said pump and said metering device being arranged in a common housing and connected hydraulically with each other so that the outlet passage of said pump serves as the inlet passage of said throttling passage of said metering device whose outlet passage is connected hydraulically with said means for introducing fuel into said engine.
Claim 2
Dependent Claim
140 words
A lubricating system incorporable in a two-stroke internal combustion engine including means for introducing fuel into said engine through a carburetor, said system including a worm-type oil pump to effect continuous positive supply of a liquid lubricant into said engine, said oil pump having a worm connected directly to the crankshaft of said engine and a metering device comprising a smooth sleeve and a helically threaded stud received in said sleeve, the thread of said stud and the walls of said sleeve defining a throttling passage; said pump and said metering device being arranged in a common housing and connected hydraulically with each other so that the outlet passage of said pump serves as the inlet passage of said throttling passage of said metering device whose outlet passage is connected hydraulically with said means for introducing fuel into said engine.
Claim 3
Dependent Claim
63 words
A lubricating system incorporable in a two-stroke internal combustion engine as claimed in claim 1, wherein hydraulic connection between the outlet passage of the throttling means and the means for introducing fuel into the engine is effected through a diaphragm-type delivery valve so that said metering device can be connected hydraulically with any point of said means for introducing fuel into the engine.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |