Rotary pistons

Internal-combustion engines – Precombustion and main combustion chambers in series – Precombustion chamber is carried by a valve

Reexamination Certificate

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Details

C418S268000, C418S260000

Reexamination Certificate

active

06945218

ABSTRACT:
A rotary piston for use in pumps or motors, the piston having a cylindrical rotor with radially movable vanes rotating within a housing, the movement of the vanes controlled by pins of the vanes travelling in races in the housing.

REFERENCES:
patent: 2728330 (1955-12-01), Petersen
patent: 3431861 (1969-03-01), Martin
patent: 3464395 (1969-09-01), Kelly
patent: 3478728 (1969-11-01), Kelly
patent: 3514237 (1970-05-01), Spyridakis
patent: 3863611 (1975-02-01), Bakos
patent: 3873253 (1975-03-01), Eickmann
patent: 4917584 (1990-04-01), Sakamaki et al.
patent: 4958995 (1990-09-01), Sakamaki et al.
patent: 6554596 (2003-04-01), Patterson
patent: 6776136 (2004-08-01), Kazempour
patent: 2628539 (1977-01-01), None
patent: 29720052 (1998-02-01), None
patent: 2078303 (1982-01-01), None
patent: 2 401 402 (2004-11-01), None
patent: 57-032095 (1985-02-01), None
UK Search Report for Application No. GB0422435.8 dated Dec. 8, 2004.

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