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. 02, 1990
Filed:
Jun. 20, 1988
Applicant:
Inventor:
Richard Riback, Deerfield, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
4162 / ; 4161 / ;
Abstract
A pump including an impeller adapted to be removably mounted on a powered shaft, the impeller including a bore opening for complimentary reception of the shaft. The bore opening of the impeller has a torque inducing surface which abuts a complimentary torque inducing surface on the shaft. The impeller includes a plurality of circumferentially spaced flexible finger members disposed in axially extending relation about the bore opening which include inwardly directed bosses for axially securing the impeller to the shaft, and a cap element to retain the finger members compressively against the shaft.