Device for indicating objects rearwardly of a vehicle

• US 3,226,673 A
• Filed: 06/18/1962
• Issued: 12/28/1965
• Est. Priority Date: 06/18/1962
• Status: Expired due to Term

• Current Assignee: Allen L. Cudworth
• Original Assignee: Allen L. Cudworth
• Inventors: Cudworth, Allen L.
• Application Number:
  US04/203,053
• Time in Patent Office: 1,289 Days
• US Class Current: 340/904
• CPC Class Codes: G01S 13/931 of land vehicles
• CPC Class Codes: G01S 15/04 Systems determining presence of a target
• CPC Class Codes: G01S 2013/9317 Driving backwards
• CPC Class Codes: G01S 2013/9324 Alternative operation using ultrasonic waves
• CPC Class Codes: G01S 2013/93272 in the back of the vehicles
• CPC Class Codes: G01S 2013/93275 in the bumper area
• CPC Class Codes: Y10S 367/909 Collision avoidance

Claims

1. IN A DEVICE FOR USE IN A VEHICLE FOR INDICATING THE DISTANCE BETWEEN THE VEHICLE AND AN OBJECT TOWARDS WHCIH IT IS BACKING, AN INDICATOR INCLUDING A BULB OF THE GAGEOUS DISCHARGE TYPE, A PERMANENT MAGNET SPACED THEREFROM, AND MEANS TO ROTATE SAID BLUB AND SAID MAGNET ABOUT A COMMON AXIS, PULSE GENERATING MEANS INCLUDING A PICKUP COIL IN SAID INDICATOR AND SO DISPOSED REALTIVE TO THE PATH OF SAID MAGNET AS TO GENERATE A PULSE ON EACH PASS OF SAID MAGNET, SAID GENERATING MEANS INCLUDING A SERIES OF SIGNAL EMITTING TRANSDUCERS SUPPORTED TRANSVERSELY AND DISPOSED REARWARDLY OF THE VEHICLE, AND SIGNAL RECEIVING MEANS FOR RECEIVING PULSES REFLECTED FROM AN OBJECT WITHIN A PREDETERMINED RANGE AND INCLUDING SAID BLUB, A SERIES OF REARWARDLY DISPOSED SIGNAL RECEIVING TRANSDUCERS DISPOSED TRANSVERSELY OF THE REAR OF SAID VEHICLE, AND MEANS TO CONVERT THE RECEIVED SIGNALS INTO ELECTRIC BULB-FLASHING PULSES, SAID GENERATING MEANS DELIVERING PULSES DIRECTLY TO SAID RECEIVING MEANS TO ESTABLISH A ZEROREFERENCE FLASHING OF SAID BULB.