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. 30, 1979
Filed:
Feb. 23, 1978
Applicant:
Inventors:
Claes B Sjoholm, Malmo, SE;
Karl J Martensson, Lund, SE;
Assignee:
Alfa-Laval AB, Tumba, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277 24 ; 277 15 ; 277 59 ; 277 68 ; 277 / ;
Abstract
A rotatable shaft extends from the interior of a receptacle through a wall thereof forming a closed chamber surrounding the shaft; and a first sealing ring surrounding the shaft is operable to prevent flow into the chamber from the receptacle interior but to allow flow in the opposite direction, a second sealing ring surrounding the shaft to prevent flow from the chamber in the axial direction away from the receptacle interior. Valve means are operable selectively to connect the chamber to either a cleaning liquid supply source or a draining passage or to disconnect the chamber simultaneously from both said source and passage.