Patent ID: 7222486
Filing Date: 2007-05-29
Classification: F02M,F16D

Abstract:
1. A diaphragm assembly including a cap formed of a rigid material and a diaphragm formed of an elastomeric material, characterized in that: the diaphragm is generally tubular and includes an upper annular collar portion defining an open upper end of the diaphragm and a main body portion extending downwardly from the collar portion, defining a closed lower end of the diaphragm, and including, in cross section, a plurality of hollow radially extending circumferentially spaced arms; and the cap includes an upper disc portion sized to receive the collar portion of the diaphragm and a rib portion extending downwardly from the disc portion and including, in cross-section, a plurality of radially extending circumferentially spaced arms positioned respectively within the arms of the main body portion of the diaphragm.