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, 1989
Filed:
Jun. 04, 1987
Applicant:
Inventor:
Peter Stahl, Enskede, SE;
Assignee:
Flygt AB, Solna, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H / ; F16J / ;
U.S. Cl.
CPC ...
4161 / ; 277 32 ; 277 53 ; 277 56 ; 277 68 ; 277 70 ; 277133 ; 4151 / ; 416174 ;
Abstract
A device in a submersible pump or mixer prevents solid bodies from entering a housing containing a mechanical seal. The device has a helically formed groove so directed, that pollutant material is fed in a direction away from the mechanical seal, and the device has a cutting means to cut the pollutant material.