Title:
PORTABLE ULTRASONIC UNDERWATER SENSOR
Document Type and Number:
Japanese Patent JPH08195998
Kind Code:
A
Abstract:
PURPOSE: To provide a highly efficient, small-sized, light-weight, rugged and inexpensive portable ultrasonic underwater sensor.
CONSTITUTION: A cylinder 24 and a conical base 25 are axially symmetrically and integrally formed for a housing case 22 and a vibration body 22A is constituted. The center of a piezoelectric element 21 matches the center of the back surface of the conical base 25 of the vibration body 22A and is adhered and the entire vibration body 22A resonates in a vibration mode in which the flexural vibration of the center of the conical base 25 becomes maximum amplitude. The holding means of the vibration body 22A is installed on the nodal lines 27A to 27C of the vibration of the outer surface of the vibration body 22A.
Inventors:
SUZUKI HIDEYUKI
TANIZAWA KIMIHIKO
SAKAMOTO YASUHIRO
TANIZAWA KIMIHIKO
SAKAMOTO YASUHIRO
Application Number:
JP2232395A
Publication Date:
July 30, 1996
Filing Date:
January 18, 1995
Export Citation:
Assignee:
FUJI INDUSTRIES CO LTD
International Classes:
H04R17/10; G10K9/122; G10K9/20; H04B11/00; H04R17/00; (IPC1-7): H04R17/00; H04B11/00; H04R17/10
Attorney, Agent or Firm:
Shuji Shiokawa