Patent ID: 7779746

Claim:
A diaphragm for containing fluids such that when said diaphragm is urged by a multitude of progressively increasing compressive displacements, thereby urging progressively increasing fluid pressures within the diaphragm, the diaphragm stresses will never exceed a predetermined magnitude, comprised of a diaphragm material for containing said fluids of a flexibility and size to accommodate a multitude of said compressive displacements and said pressures urged by said compression, whereby in the unurged state, the diaphragm surface contour assigns a multitude of predetermined and disposed spacings to an adjacent member surface at a multitude of predetermined and disposed diaphragm corresponding radial positions, and also, said spacings will reduce with said urged compression, such that, when urged from said unurged state to a predetermined compressed state, said urged pressures will increase, thereby increasing the diaphragm stresses, and where said stresses at predetermined radial locations increase to said predetermined maximum permissible stress magnitude, the diaphragm spacings at said maximum stress radial locations are predetermined to reduce to zero, thereby becoming contiguous to and supported by said adjacent member surface, thereby the diaphragm stresses in the contiguous regions are prevented from increasing further above said predetermined stress magnitude.