LIQUID METER DRIVE COUPLING MECHANISM

摘要

An drive post (84) and dog (86) arrangement for transferring the motion of the piston (68) in an oscillating piston meter from the piston (68) to the exterior of the measuring chamber (60) is disclosed. The contact area (132) of the improved dog (130) is similary shaped as the contact area of the drive post (84) whereby the noise produced by repeated disengagement and re-engagement of the drive post (84) and the dog (130) is reduced.