Master cylinder and method of producing the same

Power plants – Pressure fluid source and motor – Pulsator

Reexamination Certificate

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C060S585000, C029S888044

Reexamination Certificate

active

07003952

ABSTRACT:
A master cylinder has a cylinder member in the shape of a cylinder, one end of which is closed, and a piston inserted in the cylinder member to form a pressure chamber in the cylinder member. The cylinder member is formed with a port for providing communication between the pressure chamber and a reservoir. The port is formed during casting of the cylinder member, thereby eliminating the need to form the port by boring, and forming the port into an elongated-hole shaped sectional configuration.

REFERENCES:
patent: 4458743 (1984-07-01), Logvinov et al.
patent: 4757857 (1988-07-01), Henkel
patent: 4899799 (1990-02-01), Drazy
patent: 4919189 (1990-04-01), Sato et al.
patent: 5131144 (1992-07-01), Saalbach et al.
patent: 5603217 (1997-02-01), Majersik et al.
patent: 5715681 (1998-02-01), Williamson
patent: 6578360 (2003-06-01), Mouri et al.

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