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:
Jan. 31, 1984
Filed:
May. 10, 1983
Applicant:
Inventor:
Hans Forch, Birkenau, DE;
Assignee:
Firma Carl Freudenberg, Weinheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277 25 ; 277133 ; 277153 ;
Abstract
A seal ring seals a shaft in a housing dynamically and statically. The dynamic seal function is provided by a porous compact which rotates with the shaft to pump liquid media centrifugally back into the sealed space and generally radial, inward channels which similarly pump gases which penetrate the compact to the channels. An annular gas impingement surface is spaced from the discharge ends of the channels at an obtuse angle to entrain the pumped gases back into the sealed space. The static seal centrifugally opens upon rotation.