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:
Feb. 28, 1984
Filed:
May. 17, 1982
Applicant:
Inventors:
Lawrence B Craig, Glen Cove, NY (US);
Alfred J Farina, Baldwin, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C / ; F04C / ;
U.S. Cl.
CPC ...
418140 ; 418153 ; 418241 ;
Abstract
A centrifugal pump impeller with vanes extending radially from an elastomeric hub in the operation of which the unavoidable flexing, i.e. alternately changing angular orientation, of the vanes in the hub does not contribute to any rupture, because the hub is provided with a compartment cooperating with each vane so that the flexing movements occur in that compartment, rather than causing stretching and compression in the hub elastomeric construction material which ultimately produces rupture or other such breakdown.