Pulsation absorbing means having one or more valve shoes divided into two parts each displays suitable function

Claim 1

A pulsation absorbing device comprising: a cylindrical pressure vessel; a cylindrical resilient diaphragm and an inner cylinder; and one or more communicating holes formed around a periphery of said inner cylinder, said cylindrical resilient diaphragm and said inner cylinder being disposed within said pressure vessel, said inner cylinder being concentric with said vessel and with said diaphragm; valve means for said device comprising, one or more arched resilient valve members and one or more separate arched leaf springs laminated with each other and disposed along the outer surface of said inner cylinder with said leaf springs in position to cover said communicating holes, said leaf springs being capable of being raised or lowered dependent upon the extent of applied fluid pressure to open and close said communicating holes; said valve members each having an at rest radius substantially equal to the radius of the inner cylinder plus the thickness of the leaf spring and the at rest radius of the leaf spring being less than the radius of said inner cylinder so that such communicating holes are opened when the laminated valve members and leaf springs are not acted upon by fluid flow and/or diaphragm urging.