×

Wiper apparatus with reversing motor protected from overload

  • US 5,086,260 A
  • Filed: 02/15/1991
  • Issued: 02/04/1992
  • Est. Priority Date: 02/16/1990
  • Status: Expired due to Fees
First Claim
Patent Images

1. A wiper apparatus comprising:

  • a wiper motor for driving a wiper blade;

    an overcurrent detection means for detecting an overcurrent flowing in said wiper motor;

    a timer means actuated according to a signal output from the overcurrent detection means when the overcurrent is detected by said overcurrent detection means; and

    a control means for actuating the wiper blade reciprocatingly by rotating the wiper motor in the reverse direction every time the wiper blade arrives at a predetermined position, and for rotating said wiper motor in the reverse direction when the overcurrent detection means continues to detect the overcurrent flowing in the wiper motor for a period predetermined by said timer means;

    said timer means comprising a first timer means actuated according to a signal output from the overcurrent detection means when said overcurrent detection means detects the overcurrent flowing in the wiper motor, and a second timer means actuated according to a signal output from the overcurrent detection means when said overcurrent detection means detects the overcurrent again after reversing the wiper motor by detecting the overcurrent continuing for a period predetermined by said first timer means.

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