Patent ID: 8701546

Claim:
A coupling of a pump connecting a plunger and a plunger adaptor, the coupling comprising: a first body having a first recess into which a plunger flange of the plunger is received; and a second body coupled to the first body, the second body having a second recess into which a plunger adaptor flange of the plunger adaptor is received; wherein, in an installation orientation, the first recess and the second recess face in a first direction with a first angular orientation relative to a coupling axis, wherein, in a locked orientation, the first recess faces in the first direction with the first angular orientation relative to the coupling axis, and the second recess faces in a second direction with a second angular orientation relative to the coupling axis, the first angular orientation is 180° opposite the second angular orientation, and wherein the first body and the second body are adjusted 180° relative to one another to move from the installation orientation to the locked orientation, and wherein said plunger flange is in said first body recess and said adaptor flange is in said second body recess when said first body and second body are in said installation orientation and in said locked orientation.