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:
Dec. 21, 1982
Filed:
Oct. 09, 1980
Lowell E Hershey, Portage, MI (US);
Durametallic Corporation, Kalamazoo, MI (US);
Abstract
A mechanical seal assembly having an improved packing arrangement between the gland and the insert. The packing arrangement utilizes a laminated graphite packing positioned within an annular recess formed between the gland and the insert. One of the annular seats for the packing, such as the inner annular surface defined on the insert, is provided with a slightly tapered configuration so that the continual urging of the insert toward the gland, coupled with the tapered configuration of the seating surface, causes the packing to be continuously compressed and reseated against the inner and outer seating surfaces, whereby leakage of corrosive and/or high temperature fluid past the packing is greatly reduced.