公开(公告)号：AU2013345132A1

公开(公告)日：2015-05-14

申请号：AU2013345132

申请日：2013-11-06

Applicant: ROPER PUMP COMPANY

Inventor： COGHLAN III EDMOND ,  ANDERSON TYSON BENTLEY ,  PURCELL JOHN EUGENE ,  RIVARD ZACHARIAH PAUL

IPC: F04C2/107

Abstract: A stator for a helical gear device is formed from multiple rigid disks and support rings bonded to the disks. Each disk forms part of a profile having equally spaced or opened lobes which interact with the convex portions of rotor lobes. The disks are bonded to one another to form a disk stack defining a helically convoluted elongated chamber therein. The support rings are fixed concentrically against respective end disks of the disk stack. The rings have an inside diameter substantially equal to the major diameter of the central aperture defined by the radially extending lobes of the disks. As a rotor rotates and nutates inside the stator, it is supported at both ends of the disk stack by the support rings touching tips of the rotor lobes. Thus the full force of the rotor's operational inertia is not borne by the disks alone, thereby increasing their life.