Patent ID: 6876127
Filing Date: 2005-04-05
Classification: G01S,G10K

Abstract:
1. An ultrasonic transceiver comprising: a piezoelectric member; an inner housing having a bottom portion, a first tubular side wall extending from one end surface of the bottom portion and a first flange portion formed on an outer peripheral portion of the first tubular side wall, said bottom portion and first tubular side wall providing a tubular cavity therebetween, said piezoelectric member being mounted on the one end surface of the bottom portion in the tubular cavity; an outer housing having a second tubular side wall coaxially arranged around the outer peripheral portion of the first tubular side wall with a predetermined gap therebetween, said second tubular side wall being provided with one end portion which is opposite to one end surface of the first flange portion and contacted thereto; and a first absorption member inserted in the gap between the first tubular side wall and the second tubular side wall.