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:
Sep. 20, 1994
Filed:
Feb. 19, 1993
Applicant:
Inventor:
Anton Pawlakowitsch, Alzenau, DE;
Assignee:
Leybold AG, Hanau, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277135 ; 277 / ; 277152 ;
Abstract
The invention relates to a shaft seal for sealing a shaft pass-through (3) of vacuum apparatus, which accommodates a shaft (2), having at least one annular seal (4) which is disposed in a housing part and with which a barrier liquid (5) is associated, while the sealing part (6) of the annular seal facing the shaft (2) forms with the shaft an annular chamber (8) in which the barrier liquid (5) is provided, in order in this manner to bind particles formed by attrition.