Drive rod coupling for positive displacement pump

Abstract From the Canadian patent

Abstract of the Disclosure, A coupling device for use in a gas operated positive displacement reciprocating pump, which disconnectably accomodates two rigid, elongated reciprocating elements while maintaining contact between the elements and eliminating relative longitudinal movement. Included is a hemispherically faced connector head connected to one of the elements. The coupling device further includes a retainer connected to the other of said elements into which the head is positioned. The connector head is contained in the retainer by a retaining member and biased against a bearing within the retainer by a plurality of Belleville washers. The force developed by the washers is sufficient …