Automatic air vent device for fluid pump of internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 29, 1988
Grant Date -
N/A
app pub date -
Feb 17, 1987
filing date -
Feb 18, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Several embodiments of venting arrangements for the lubricant pump of a two-cycle, crankcase compression internal combustion engine for an outboard motor and having a positive lubricating system. In each embodiment, the lubricant pump is provided with a vent passage that extends from an upper portion of a chamber of the pump for venting air from it. In each embodiment, an arrangement is provided for permitting air flow from the fluid pump without returning to the fluid pump. In some embodiments, this means comprises a check valve and in another embodiment, it comprises a restricted orifice.
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