×

Anti-freezing system for a windshield-wiper

  • US 4,387,290 A
  • Filed: 11/21/1980
  • Issued: 06/07/1983
  • Est. Priority Date: 12/03/1979
  • Status: Expired due to Term
First Claim
Patent Images

1. An anti-freezing system for a windshield-wiper of an engined vehicle, comprising:

  • (a) a heater adapted to heat said windshield-wiper;

    (b) a first relay switch for supplying heating electric power to said heater when energized with a current value greater than a predetermined value;

    (c) an electric generator driven by the engine to produce electric power;

    (d) a second relay switch connected to said electric generator for supplying electric power when energized; and

    (e) a temperature sensitive means including a resistance changing with the ambient temperature for sensing the ambient temperature, said temperature sensitive means being connected between said second relay switch and said first relay switch so as to supply a current greater than the predetermined value from said second relay switch to said first relay switch for energization when the ambient temperature as sensed by said temperature sensitive means is below a predetermined value.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×