Loading dock range finding system
November 29, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3226673 3673553 3732555 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 InventorsAssigneeApplicationNo. 442710 filed on 11/29/1989US Classes:367/108, Digital readout367/909COLLISION AVOIDANCEExaminersPrimary: Tarcza, Thomas H.Assistant: Pihulic, Daniel T. Attorney, Agent or FirmInternational ClassG01S 015/00AbstractA 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. | |
