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Windshied washer apparatus with flow control coordinated with a wiper displacement range

  • US 5,819,360 A
  • Filed: 08/19/1996
  • Issued: 10/13/1998
  • Est. Priority Date: 09/19/1995
  • Status: Expired due to Fees
First Claim
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1. A wiper-cooperative washing apparatus for washing a glass surface of a vehicle in coordination with a wiper drive mechanism for effecting forward movement and return movement of a wiper blade assembly over a wiper blade travel range, said wiper blade assembly having a wiper blade with a forward edge defined by a direction of said forward movement, said wiper-cooperative washing apparatus comprising:

  • a nozzle pipe having nozzles disposed thereon for emitting a washing liquid toward said forward edge of said wiper blade, said nozzle pipe having first and second ends and said nozzle pipe being mountable on said wiper blade assembly;

    a washer pump for pumping said washing liquid;

    a feed pipe for feeding said washing liquid from said washer pump to said nozzle pipe for emission by said nozzles;

    said nozzles including at least a first end nozzle at said first end of said nozzle pipe and a second end nozzle at said second end of said nozzle pipe;

    at least one of said first end nozzle and said second end nozzle having a ball valve device for reducing an initial emission rate of said washing liquid by said at least one of said first end nozzle and said second end nozzle in response to a continuous flow of said washing liquid;

    a washer switch for initiating a washing operation of said wiper-cooperative washing apparatus; and

    control means for controlling said wiper drive mechanism to effect said forward movement and said return movement of said wiper blade assembly a predetermined number of times when said washer switch is operated, and for controlling said washer pump to operate over an emission range of 55% to 75% of said wiper blade travel range during said forward movement of said wiper blade assembly such that said emission of said washing liquid by said first end nozzle and said second end nozzle is limited to said emission range.

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