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:
Jun. 11, 2002
Filed:
Jun. 16, 2000
Jürgen Aenis Dipl.-Ing., Radolfzell, DE;
Allweiler AG, Radolfzell, DE;
Abstract
A centrifugal pump with a floating ring seal ( ) provided in a sealing chamber ( ) for pumped fluid and web-like flat pieces arranged in the sealing area ( ) between the outer wall and the floating ring seal ( ) extending in a longitudinal section approximately parallel to the pump shaft ( ). At least one closable ventilation opening ( ) is arranged in the head area of the sealing chamber ( ), in addition to one blade-like flat piece ( ) which is disposed on the peripheral wall ( ) on both sides of the ventilation opening ( ). From a cross-sectional point of view, both flat pieces ( ) are inclined towards each other and define an antechamber with a slit ( ) which is parallel to the pump shaft ( ) at a distance from the peripheral wall. Preferably, the blade-like flat pieces ( ) are fixed to the radial wall ( ) and the free blade edge parallel thereto defines a radial slit with the other radial wall.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile