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:
Mar. 07, 1989
Filed:
Oct. 07, 1987
Applicant:
Inventor:
Paul T Kachuk, Fort Wayne, IN (US);
Assignee:
Flint & Walling, Inc., Kendallville, IN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; F01D / ;
U.S. Cl.
CPC ...
310 90 ; 310 87 ; 4151 / ;
Abstract
A corrosion resistant ferrule secured to the end of a full carbon steel rotor shaft in order to reduce wear and corrosion of the sealing elements of the pump assembly, while enhancing the overall strength of the drive shaft. A threaded member is received in the end of the rotor shaft and ferrule in order to secure the pump impeller to the drive shaft. The corrosion resistant ferrule reduces manufacturing costs while allowing integral rotor shaft construction. The ferrule may be manufactured of stainless steel, plastic, or brass.