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:
May. 16, 2000
Filed:
Jun. 02, 1997
Takeshi Nakamura, Uji, JP;
Yoshiaki Heinouchi, Joyo, JP;
Abstract
A piezoelectric speaker has a substantially reduced size and reproduces sound in the low sound range. The piezoelectric speaker includes a cylindrical main body. First and second sounding members are secured to apertures of both sides of the main body in an air tight arrangement via ringed dampers made of rubber. An external opening is created at the middle of a side surface of the main body. The opening is created so as to have an area which is less than area of a vibrating portion of the sounding members. Sound absorbing members are provided within the main body, on the outside of the first sounding member and on the outside of the second sounding member. Caps having a plurality of holes are secured to the apertures of the both sides of the main body so as to cover the sound absorbers. The main body is supported on concave portions of leg members.