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. 29, 1983
Filed:
May. 05, 1982
David J Perduijn, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
The method utilizes two plates of piezoelectric material. In a first major surface of the first plate there are formed mutually parallel channels which extend from one edge of the major surface to the opposite edge. On both major surfaces of both plates there are provided metal layers and both plates are polarized by application of an electric voltage between these metal layers. The first major surface of the first plate and the first major surface of the second plate are covered with a layer of adhesive. In each channel a tube is arranged and the two plates are arranged one on the other in a registering manner so that the surfaces provided with adhesive face one another. Finally, the adhesive is subjected to a curing process.