Ultrasonic distance detector for vehicles
System for detecting the presence of a possibly moving object
Object indicator for moving vehicles
Automatic alarm system for detecting obstacles behind a backing vehicle
Temperature and operating mode digital display having direct and mirror image viewing capability
Sonar distance sensing apparatus
Automotive rear safety checking apparatus
ApplicationNo. 442710 filed on 11/29/1989
US Classes:367/108, Digital readout367/909COLLISION AVOIDANCE
ExaminersPrimary: Tarcza, Thomas H.
Assistant: Pihulic, Daniel T.
Attorney, Agent or Firm
International ClassG01S 015/00
AbstractA loading dock range finding system is provided for permitting a driver of a vehicle backing towards a loading dock to determine a distance of the back end of the vehicle from a reference point at the loading dock. An ultrasonic transmitting and receiving transducer is positioned adjacent the loading dock for sending signals towards a back end of the truck, which are reflected and received by the transducer. A display unit is connected to the transducer and is mounted at a location adjacent the loading dock so that a visual display on the display unit can be easily viewed by a driver of the vehicle looking through his rear view mirror. A distance between the back end of the vehicle and the reference point is displayed in reversed image fashion on the visual display so that when the driver views the image through his rear view mirror, it is not a reversed image.