Windshield wiper device for automobiles
AssigneeToyo Kogyo Co., Ltd.
InventorsMituru Nagaoka, Sizuo Sumida
Life of this patent
Estimating the term…
Abstract
A windshield wiper device for automobiles including a control circuit for controlling a wiper drive motor. The control circuit has a wiper switch including an intermittent position wherein the wiper is intermittently driven. In the intermittent position of the wiper switch, the wiper is at first driven for one complete stroke. Then, after a desired time, the operator actuates a time interval setting switch whereby the wiper is thereafter driven intermittently with the desired time interval.
Claims4
A windshield wiper device for an automobile comprising wiper blade means adapted for wiping engagement with a windshield, blade driving motor means for driving the wiper blade means, control circuit means for controlling the blade driving motor means and including a wiper switch for producing a first signal, a time interval setting switch for producing a second signal, an up-down counter which is able to count in two different directions, said up-down counter starting a count in a first one of said two different directions from a reference value upon receipt of said first signal and for stopping the count upon receipt of the second signal, a memory responsive to the second signal for memorizing the counted value in the up-down counter when the second signal is produced, said up-down counter receiving the counted value memorized in the memory as a set input and repeatedly counting in a second one of said two different directions from the counted value toward the reference value to produce a pulse signal each time the reference value is reached, and energizing means for receiving the pulse signal directly from the up-down counter, and responsive thereto for energizing the blade drive motor means to drive the wiper blade means.
Dependencies are inferred from the claim text.