Title:
2-CYCLE VIBRATOR FOR FISH TYPE IDENTIFYING FISH FINDER
Document Type and Number:
Japanese Patent JPS5240165
Kind Code:
A
Abstract:
PURPOSE: One vibrator is designed to make simultaneous transmission and reception of ultrasonic waves of high frequency in a thickness direction and low frequency in a diametral direction, whereby a simple device that can readily detect fish shoal by identifying types of fish is obtained.
Inventors:
HONDA KEISUKE
Application Number:
JP11550275A
Publication Date:
March 28, 1977
Filing Date:
September 26, 1975
Export Citation:
Assignee:
HONDA KEISUKE
International Classes:
G01S7/521; G01S15/96; F02B75/02; (IPC1-7): G01S7/52; G01S9/70
Domestic Patent References:
| JP40025555A | ||||
| JPS4931874U | 1974-03-19 |