초록 ▼

A backup washer for clamping a diaphragm having a flexible washer disposed next to a rigid washer, the flexible washer including a material less stiff than a material of the rigid washer. The flexible washer may include an elastomer material such as rubber. A flexible washer having a varied stiffnes

A backup washer for clamping a diaphragm having a flexible washer disposed next to a rigid washer, the flexible washer including a material less stiff than a material of the rigid washer. The flexible washer may include an elastomer material such as rubber. A flexible washer having a varied stiffness profile may also be provided to the face by incorporating materials having different stiffnesses, contouring, or both. The rigid washer may include a metal, plastic, composite materials, or combinations of these and may also be bowed or ribbed. The flexible washer and rigid washer of the backup washer may mechanically fastened, bonded, or molded together. A diaphragm pump having a diaphragm which is clamped by at least one backup washer having a flexible washer which includes a material less stiff than the material of the diaphragm and a rigid washer next to the flexible washer which includes a material more stiff than the diaphragm material.

대표청구항 ▼

[ Having described the invention what is claimed is:] [1.] A diaphragm pump comprising:at least one diaphragm;first and second backup washers for clamping said at least one diaphragm, each backup washer comprising a flexible washer and a rigid washer disposed next to said flexible washer, said flexi

[ Having described the invention what is claimed is:] [1.] A diaphragm pump comprising:at least one diaphragm;first and second backup washers for clamping said at least one diaphragm, each backup washer comprising a flexible washer and a rigid washer disposed next to said flexible washer, said flexible washer comprising a material less stiff than a material of said rigid washer, wherein each flexible washer of said backup washers is in contact with said at least one diaphragm and each rigid washer of said backup washers is rigidly secured to a reciprocating rod of said pump.