Decompression device for an engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 29, 2000
Grant Date -
N/A
app pub date -
Sep 11, 1998
filing date -
Sep 16, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cam gear is mounted on a camshaft, and an intake cam and an exhaust cam are formed on the cam gear for operating an intake valve and an exhaust valve of a hand starting four-cycle engine. A decompression device is rotatably mounted in the cam gear. A decompression cam of the decompression device is exposed from the exhaust cam. The decompression device has a weight, and a spring is provided for urging the weight to the cam shaft. Elastic force of the spring is set so that the weight is urged toward the camshaft in hand starting operation of the engine and moved apart from the camshaft by centrifugal force, thereby projecting the decompression cam in the compression stroke of the engine as to open the corresponding valve.
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