US3926157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-cycle engine with inlet porting by rotary valve
Assignee: Bombardier Inc
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Filing: 1973-10-12
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Granted: 1975-12-16
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Expires: 1993-10-12
Abstract
Abstract A two-cycle engine with rotary valve induction control, has a rotary valve drive shaft connected to the crankshaft through a worm gear and also drives additional auxiliary and accessory systems such as the engine oil pump and water pump. With conventional arrangements it is difficult to provide for the drive of all necessary auxiliary and accessory systems directly from the ends of the crankshaft.
Inventors
- 👤 Hans Heinz Lippitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
F; F01; F01L; F01L7/00; F01L7/12; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A two-cycle engine with rotary valve induction control, comprising: an engine casing defining a crankcase; a crankshaft rotatably mounted in said casing to deliver power from said engine; a drive shaft rotatably mounted in said casing transversely of said crankshaft, worm gear means drivingly connecting said crankshaft to said driveshaft; a rotary valve means to control the supply of combustion mixture to said crankcase directly connected to said drive shaft at one end thereof for rotation thereby; at least one additional auxiliary system drivingly connected to the other end of said drive shaft, said at least one additional auxiliary system comprising a liquid coolant circulation pump having a housing which is at least in part integral with said casing and an impeller within said housing directly connected to said other end of said drive shaft for rotation thereby; an oil injection pump in said casing, said oil injection pump being gear driven and including a driven gear; and said rotary valve means including a hub comprising a driving pinion meshing with said driven gear.
Claim 2
Dependent Claim
174 words
A two-cycle engine with rotary valve induction control, comprising: an engine casing defining a crankcase; a crankshaft rotatably mounted in said casing to deliver power from said engine; a drive shaft rotatably mounted in said casing transversely of said crankshaft, worm gear means drivingly connecting said crankshaft to said driveshaft; a rotary valve means to control the supply of combustion mixture to said crankcase directly connected to said drive shaft at one end thereof for rotation thereby; at least one additional auxiliary system drivingly connected to the other end of said drive shaft, said at least one additional auxiliary system comprising a liquid coolant circulation pump having a housing which is at least in part integral with said casing and an impeller within said housing directly connected to said other end of said drive shaft for rotation thereby; an oil injection pump in said casing, said oil injection pump being gear driven and including a driven gear; and said rotary valve means including a hub comprising a driving pinion meshing with said driven gear.
References Cited (Backward Citations)
US914366A
Cited
US1277742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |