Pump of electronically controlled brake system

Details Pump of electronically controlled brake system Pump of electronically controlled brake system

2011-08-09

2011-08-09

Freay, Charles G (Department: 3746)

Pumps

Expansible chamber type

Valved piston

C417S454000, C417S570000, C137S539000

Reexamination Certificate

active

07993115

ABSTRACT:
A pump including a bore formed in a modulator block and connected with a suction port and a discharge port is provided. The pump includes a piston installed in the bore in a reciprocating movable manner and defining an inlet path therein, an inlet valve to open or close an exit-side end of the inlet path according to a position of the piston, and an outlet valve provided at one side of the bore, operations of the inlet and outlet valves being contrary to each other. The outlet valve includes a valve seat, a sleeve to surround the valve seat, an outlet ball interposed between the sleeve and the valve seat and used to open or close a path defined in the valve seat, and a valve cap provided at one side of the sleeve to isolate an interior from an exterior of the bore.

REFERENCES:
patent: 6394770 (2002-05-01), Siegel et al.
patent: 6471496 (2002-10-01), Merklein et al.
patent: 6866489 (2005-03-01), Hinz et al.
patent: 7278835 (2007-10-01), Schmitt et al.
patent: 2003/0053920 (2003-03-01), Hinz et al.
patent: 2004/0113487 (2004-06-01), Yang
patent: 2004/0166004 (2004-08-01), Schmitt et al.
patent: 2005/0112005 (2005-05-01), Yang
patent: 10346237 (2004-09-01), None
patent: 99/40323 (1999-08-01), None
United States Office Action issued in U.S. Appl. No. 12/482,208, mailed Apr. 12, 2011.

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