Piston for a rotary combustion engine

Details Piston for a rotary combustion engine Piston for a rotary combustion engine

2005-06-09

2009-02-17

Trieu, Thai-Ba (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

C418S091000, C418S094000, C123S200000, C123S205000

Reexamination Certificate

active

07491046

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.

REFERENCES:
patent: 3176915 (1965-04-01), Bentele et al.
patent: 3204614 (1965-09-01), Huber
patent: 3400604 (1968-09-01), Jones
patent: 3469505 (1969-09-01), Bensinger
patent: 3799706 (1974-03-01), Bilobran
patent: 3942918 (1976-03-01), Hermes
patent: 3988079 (1976-10-01), Ounsted et al.
patent: 4971533 (1990-11-01), Sutter et al.
patent: 37 28 943 (1989-03-01), None
patent: 54117808 (1979-09-01), None

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