Flow quantity control valve

Details Flow quantity control valve Flow quantity control valve

2005-01-04

2005-01-04

Look, Edward K. (Department: 3754)

Valves and valve actuation

Valve

Removable seat engaging element

C137S338000

Reexamination Certificate

active

06837485

ABSTRACT:
A flow quantity control valve includes second spring holder that is fixed within housing and holds one end of valve spring which is located on a side of valve disk. The second spring holder is a roughly cylindrical member made of a material with a lower thermal conductivity than that of the housing1made of cast iron; and is composed of roughly circular internal bottom, stay portion that is a body portion extending from the outer periphery of the internal bottom and surrounding the valve spring, a through hole formed in a center of the internal bottom and having a larger internal diameter than the external diameter of surrounding wall constituting another through hole of the housing and flange portion radially and outwardly extending from a upper part of the stay portion and having a roughly rectangular periphery portion.

REFERENCES:
patent: 4840348 (1989-06-01), Takigawa et al.
patent: 5494255 (1996-02-01), Pearson et al.
patent: 5632258 (1997-05-01), Tsuzuki et al.
patent: 6247461 (2001-06-01), Smith et al.
patent: 695 01 757 (1994-06-01), None
patent: 11-270417 (1999-05-01), None

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