The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 1991
Filed:
Jan. 16, 1990
Charles D Bice, Clinton Township, Butler County, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A pump includes an annular runner and annular seal ring mounted for undergoing relative rotation. The runner includes an annular support member and an annular faceplate member. The faceplate member has a sealing surface and is mounted by a clamp ring member to the annular support member. The support member includes an annular body having outer and inner circumferential edges, an outer raised circumferential rib defined on the body adjacent to its outer circumferential edge at one side of the support member for engagably supporting the faceplate member at an adjacent side thereof, an inner raised circumferential rib defined on the body adjacent to its inner circumferential edge at the one side of the support member for retaining a separate O-ring between the adjacent sides of the faceplate and support members, and an annular recessed cavity defined in the body at the one side of the support member between the outer and inner ribs for substantially spacing the faceplate member from the support member at the adjacent sides thereof to thermally insulate the faceplate member from the support member. Also, a middle raised circumferential rib is defined on the annular support member body between the outer and inner ribs for defining a seat groove with the inner rib for the O-ring.