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:
Apr. 01, 2008
Filed:
Apr. 01, 2005
Bryan N Zeigler, Fort Wayne, IN (US);
Bryan N Zeigler, Fort Wayne, IN (US);
Press-Seal Gasket Corporation, Fort Wayne, IN (US);
Abstract
An expansion ring assembly and method for sealingly installing a gasket within an opening in a wall of a structure. The expansion ring assembly includes an expansion ring having first and second adjacent end portions, and first and second cam members are rotatably coupled to the first and second end portions. Each cam member includes tool engagement structure for rotating the cam members, and cam surfaces of the cam members are engageable with one another such that, upon rotation of each cam member, the cam surface thereof engages the cam surface of the other cam member to drive the first and second end portions of the ring apart from one another, thereby radially expanding the ring to compress a gasket into sealing engagement with the wall opening. Only one cam member may be rotated, or alternatively, both cam members may be rotated sequentially, depending upon the amount of expansion which is needed. The expansion ring assembly also includes structures which prevent reverse rotation of the cam members to lock the expansion ring in its radially expanded condition, and optionally, may include only a single cam member.