Patent ID: 6748979
Filing Date: 2004-06-15
Classification: B41J,F16K,Y10T

Abstract:
A fluid supply valve comprising:a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material; and a fixed valve seat placed opposite to said fluid supply port such that said fluid supply port is closed when said valve body abuts said fixed valve seat and is opened when said valve body is separated from said fixed valve seat, wherein said valve body is equipped with at least one inflectional portion in the radial direction between said fluid supply port and the peripheral portion in said valve body, wherein a thickness of the valve body at the inflectional portion is at least as great as that at a disc portion of said valve body, and in which the at least one inflectional portion has at least a continuous concave cross section portion, only in the vicinity of the peripheral portion thereof along the circumferential direction.