Piston for a rotary combustion engine
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United States of America Patent
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Feb 17, 2009
Grant Date -
Dec 15, 2005
app pub date -
Jun 9, 2005
filing date -
Jun 9, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rotary combustion engine with at least one working unit, which has essentially a peripheral engine housing, a side housing plate on one side, a side housing plate on the power takeoff side, a triangular piston, and an eccentric shaft. The piston is configured of several parts, which are connected to each other. The connection is accomplished by electron-beam welding under vacuum, which yields excellent results as long as certain conditions are met. The one sidewall and the power takeoff sidewall of the piston are preferably welded to a piston housing, as a result of which the casting molds can be of simpler design and simpler contours can be used, which leads to welds of higher quality and to a decrease in the costs of casting.
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