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:
Jul. 05, 1988
Filed:
Oct. 27, 1986
Applicant:
Inventors:
G Allen Blakeslee, Bellefonte, PA (US);
Frederick E Coffman, State College, PA (US);
Assignee:
Chemcut Corporation, State College, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
415141 ; 416240 ;
Abstract
An impeller is provided that is adapted to be rotationally driven, and which is constructed of a resiliently stretchable elastomeric material, such that, with increased centrifugal force that is applied to the impeller vanes with increased rotation of the impeller, the impeller increases in diameter and provides increased output performance beyond the output performance of a non-stretchable impeller of the same general size as the impeller at rest.