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:
Feb. 11, 2003
Filed:
Nov. 23, 2001
Andreas Schruefer, Wolfratshausen, DE;
Werner Wolf, Mammendorf, DE;
Guenther Lederer, Geretsried, DE;
Peter Droescher, Wolfratshausen, DE;
Josef Nosowicz, Geretsried, DE;
Georg Steigenberger, Muensing, DE;
Burgmann Dichtungswerke GmbH and Co. KG, Wolfratshausen, DE;
Abstract
A face seal device for use with components rotating at a high rotational speed includes a non-rotating face seal ring ( ) and a rotary face seal ring ( ). The rotary face seal ring is mounted in a loose fit for common rotation with a rotating component and includes a sealing face ( ) which, in operation, is essentially radially aligned for cooperation with an opposite sealing face ( ) of the non-rotating face seal ring. A heavy-mass-contributing element ( ) is arranged to rotate in common with the rotating component and engages a portion of the rotary face seal ring. The center of gravity of the heavy-mass-contributing element is axially spaced from that of the rotary face seal ring, whereby, in operation, a torque directed towards the non-rotating face seal ring is applied to the rotary face seal ring. This torque arises from the centrifugal forces that correspond to the mass-contributing element and the spacing between the centers of gravity.