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. 10, 1985
Filed:
Mar. 23, 1984
Robert S Wentworth, Temecula, CA (US);
Borg-Warner Corporation, Chicago, IL (US);
Abstract
A pressure balanced mechanical seal, especially adaptable for use in a swivel in an oil well drilling arrangement comprising a pair of relatively rotatable seal rings constructed of silicon carbide or tungsten carbide each received in a cavity defined by a cylindrical and a radial wall in the respective housing for the ring with the inner cylindrical surface of each exposed to high pressure, high temperature drilling mud and with means to communicate drilling mud to the outer cylindrical surfaces thereof, and means for balancing the axial forces on the rings and to insure sufficient axial forces for perfecting the seal. Tensional and compressive forces on the rings are minimized insuring reasonable life to the seal, far in excess of that in the conventional packings now used in the oil drilling system.