Ultrasonic ranging device

Details Ultrasonic ranging device Ultrasonic ranging device

1987-07-07

1989-02-07

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367909, 340904, G01S 1593, G08G 116

Patent

active

048036706

ABSTRACT:
An improved ultrasonic ranging device having a ultrasonic sensor unit provided for detecting the distance between a ground object and a rear end of a vehicle includes: a casing body composed of a front casing and a rear casing with a round opening formed in the opposing ends; a control unit with a plurality of microswitches and a control circuit installed at one end of the casing body and electrically connected to the ultrasonic sensor unit; a gear system with a motor and a reduction gear member disposed at another end of the casing body and electrically connected to the control circuit; and a protective cover with a transmission arrangement movably connected to the casing body with the transmission arrangement meshed with the reduction gear and the control unit; thereby, the protective cover can be automatically raised up and lowered down along with the backward and forward movements of a vehicle for protecting the ultrasonic ranging device against water, dust and mud.

REFERENCES:
patent: 4278962 (1981-07-01), Lin
patent: 4654834 (1987-03-01), Dorr

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