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:
Aug. 04, 1987
Filed:
Jan. 22, 1986
Applicant:
Inventor:
Donald Murphy, Wellesley, MA (US);
Assignee:
Piezo Electric Products, Inc., Cambridge, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417322 ; 417410 ; 417436 ; 416 83 ; 310330 ;
Abstract
An acoustic pump including a resonant member having low internal damping and asymmetrically tapered to a thin edge; a piezoelectric driver mounted on the resonant member; and means for applying an alternating voltage to the piezoelectric driver in the resonant range of the resonant member for vibrating the resonant member and pumping fluid away from the thin edge.