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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