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:
Nov. 24, 1987
Filed:
Feb. 24, 1986
Applicant:
Inventors:
David N AbuJudom, II, Brookfield, WI (US);
Joseph P Dougherty, Niles, MI (US);
Kevin M Stengel, Glendale, WI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417322 ; 417415 ; 417418 ; 310328 ; 310330 ; 310332 ;
Abstract
A piezoelectric fluid pumping apparatus includes pumping means for supplying a fluid under pressure and an energizer arranged in driving relationship therewith. The energizer includes a generally planar flexure member having first and second piezoelectric laminates supported thereon. The flexure member includes a first edge and a second edge, the edges being resiliently constrained for substantially preventing longitudinal movement thereof when an electrical signal is applied to the laminates. Preferred embodiments of the flexure member include bimorphous, biunimorphous and quadrimorphous piezoelectric structures.