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:
Dec. 07, 1976
Filed:
Sep. 22, 1975
Applicant:
Inventor:
Harvey Van Fossen, Mishawaka, IN (US);
Assignee:
Wheelabrator-Frye, Inc., Mishawaka, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137807 ; 137 13 ; 251 65 ; 251305 ;
Abstract
A flow control valve for magnetic abrasive is disclosed. The valve employs a plurality of permanent magnets spaced around its circumference to set up a magnetic flux pattern. A valve disc of magnetic material mounted to a shaft for rotation is provided for controlling flow through the valve. When in the closed position, the disc completes the flux pattern set up by the magnets, preventing flow of magnetic abrasive through the valve without the need for effecting a complete mechanical seal.