Vehicle signalling apparatus for warning of approaching road conditions

• US 3,044,043 A
• Filed: 07/21/1958
• Issued: 07/10/1962
• Est. Priority Date: 07/21/1958
• Status: Expired due to Term

• Current Assignee: Wendt, Frank S.
• Original Assignee: Wendt, Frank S.
• Inventors: Wendt, Frank S.
• Application Number:
  US03/749,983
• Time in Patent Office: 1,450 Days
• US Class Current: 340/905
• CPC Class Codes: E01F 9/30 Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters E01F11/00 takes precedence
• CPC Class Codes: E01F 9/529 specially adapted for signalling by sound or vibrations, e.g. rumble strips; specially adapted for enforcing reduced speed, e.g. speed bumps
• CPC Class Codes: G08G 1/052 with provision for determining speed or overspeed speed measuring in general G01P
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element

Claims