Motor-controlled windshield wiper system

Details Motor-controlled windshield wiper system Motor-controlled windshield wiper system

1997-02-07

1999-07-13

Shoop, Jr., William M.

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318444, H02P 100

Patent

active

059231378

ABSTRACT:
In a wiper system using a reversible motor for reciprocating angular movement of a wiper arm, a separate relay and a separate position detecting segment are used for selectively defining a path for regenerative braking. Because the third relay and the third position detecting segment are provided separately from those used for controlling the power supply of the electric motor, and are therefore relatively free from any large time constant, it is possible to start the regenerative braking action at a prescribed angular location without involving any substantial time lag so that the wiper arm can be stopped at a prescribed angular position at each terminal point at high precision at all times.

REFERENCES:
patent: 4733147 (1988-03-01), Muller et al.
patent: 4742280 (1988-05-01), Ishikawa et al.
patent: 5568026 (1996-10-01), Welch
patent: 5654616 (1997-08-01), Suriano et al.

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