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A universal intermittent windshield wiper circuit adapt. [21] Appl. No.: 47,173 able to the windshield wiper mechanism of automotive. [22] Filed: ... wiper circuit compnses an R-C timer circuit periodically ener ... manufactured overseas using only external connections. .... 555 CN manufactured by National Semiconductor, Inc.
United States Patent [191

[111

4,286,200

Brown

[45]

1 Aug. 25, 1981

Best Available Copy

[54] UNIVERSAL INTERMI'I'I‘ENT

Primary Examiner-Ulysses Weldon Attorney, Agent, or Firm-Remy J. VanOphem

WINDSHIELD WIPER CIRCUIT

[75] Inventor: Ralph V. Brown, Cayuta, NY. [73] Asslgnee: Facet Enterprises’ Inc" Tulsa’ Okla‘ [21] Appl. No.: 47,173

[57] ABSTRAC1. A universal intermittent windshield wiper circuit adapt able to the windshield wiper mechanism of automotive

[22] Filed:

vehicles is disclosed herein. "ljhe ‘intermittent wiper circuit compnses an R-C timer circuit periodically ener

Jun. 8’ 1979

[51] [52]

Int. Cl.3 ............................................. .. HOZP 1/04 US. Cl. ............ .................... .. 318/443; 318/444; _ 318/484 [58] Fleld of Search """""""""" " 318/443’ 444’ 484' 446;

307/141; 15/25012; 361/160’ 191

[56]

gizing a three pole double throw relay, The internal interconnections of the relay switch contacts permit the intermittent windshield wiper circuit to be connected to the wiper mechanism of almost all domestically manu

factured automotive vehicle as well as many vehicles

References Cited

manufactured overseas using only external connections.

Us PATENT DOCUMENTS

The circuit is equally adaptable to external and con cealed wiper mechanism.

3,657,626

4/1972

3,783,362

l/l974

3,927,436

12/1975

Rouvre et al. .............. .. 15/250.l2 X Basso et al.

......

. . . . . . ..

318/443

Inone et al. .................... .. 318/443 X

12 Claims, 5 Drawing Figures

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