METAL STATORS - ROPER PUMP COMPANY

Title:

METAL STATORS

Document Type and Number:

WIPO Patent Application WO/2014/078145

Kind Code:

A3

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.

Inventors:

COGHLAN EDMOND III (US)
ANDERSON TYSON BENTLEY (US)
PURCELL JOHN EUGENE (US)
RIVARD ZACHARIAH PAUL (US)

Application Number:

PCT/US2013/068707

Publication Date:

August 28, 2014

Filing Date:

November 06, 2013

Export Citation:

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Assignee:

ROPER PUMP COMPANY (US)

International Classes:

F04C2/107

Foreign References:

US20100284843A1	2010-11-11
US3975121A	1976-08-17
GB1238237A	1971-07-07
GB1567880A	1980-05-21
US5832604A	1998-11-10

Other References: