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. 14, 1981
Filed:
Apr. 14, 1980
Lowell E Hershey, Portage, MI (US);
Durametallic Corporation, Kalamazoo, MI (US);
Abstract
A mechanical seal construction having an annular face ring, preferably of hard material such as tungsten or silicon carbide, interference fitted within an annular flange formed on a seal ring. One of the face and seal rings is undercut so that the effective holding force between the flange and the face ring, as created by the interference fit, acts effectively only at, or at least adjacent, the central transverse plane of the face ring to substantially prevent distortion of the face ring. The inner end face of the face ring is axially spaced from the opposed end face on the seal ring, so that the face ring is supported on and engaged with the seal ring solely by the engagement therebetween substantially along the central transverse plane.