Control circuits for windscreen wipers for road vehicles

Details Control circuits for windscreen wipers for road vehicles Control circuits for windscreen wipers for road vehicles

1977-07-07

1979-06-19

Smith, Jr., David

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

Variable periods or intervals between controlling operations

1525012, 1525013, H02P 104, B60S 108

Patent

active

041587987

ABSTRACT:
In order to be able to use a standard windscreen wiper switch with a biased open contact for selecting flick wipe or intermittent wipe operation the control circuit includes a flip-flop which is set when the contact is closed, but is reset by a timing circuit if the contact is held closed for more than a predetermined time. The output of the flip-flop controls a timer i.c. which in turn intermittently energizes the wiper system while the flip-flop remains set.

REFERENCES:
patent: 3487282 (1969-12-01), Gasiorek et al.
patent: 3656042 (1972-04-01), Keisuke
patent: 3657626 (1972-04-01), Royure et al.

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