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:
Sep. 02, 1980
Filed:
Nov. 30, 1978
Harry W Kompanek, Santa Barbara, CA (US);
Other;
Abstract
An electromechanical transducer is made from a member providing for the introduction of electrical energy and the conversion of such energy to mechanical vibrations radially. First means cooperate with the transducer member in limiting the vibrations of the member in a direction for radially contracting the member. When the transducer member has a narrow gap extending along the length of the transducer member, the first means includes a resilient member having a width greater than the width of the gap and disposed in the gap to prestress the transducer member and prevent the ends of the gap from contacting each other during such vibrations. Second means cooperate with the transducer member for limiting the vibrations of the member in a direction for radially expanding the member. The second means include at least one band extending circumferentially around the transducer member for limiting the mechanical vibrations of the member in a direction for expanding the member. Means are provided for introducing electrical signals to the transducer member to produce the mechanical vibrations.