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. 21, 1993
Filed:
Apr. 30, 1991
Applicant:
Inventors:
Andrew Mitchell, Montoursville, PA (US);
Galen Ingram, Muncy, PA (US);
Assignee:
The Young Industries, Inc., Muncy, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28B / ; B28B / ;
U.S. Cl.
CPC ...
264138 ; 29558 ; 29890132 ; 264154 ; 264162 ; 264163 ; 264294 ; 264296 ; 264310 ;
Abstract
A method of making a rotor for a rotary valve including cutting a round slug of a plastic material to a desired length, turning the round slug on a lathe to provide a desired outside diameter, milling the slug on a vertical milling machine to form a plurality of circumferentially spaced pockets, each of the pockets having rounded wall junctures and corners on a vertical milling machine, and milling an axial hole in the slug for receiving an end portion of a drive shaft.