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US 5,690,207 AGranted
Windshield wiper clutch assembly
AssigneeGrimes Aerospace Company
InventorsRichard P. Scherch, Robert E. Neer
Life of this patent
Estimating the term…
Abstract
A clutch mechanism for use in a windshield wiper system having a park eccentric, the clutch incorporates a unidirectional sprag clutch bearing and a torsional return spring to provide the clutch function.
Claims7
In a windshield wiper system having a linkage containing a park eccentric, a clutch assembly in association therewith, said clutch assembly comprising;
- a sprag clutch having an inner race and an outer race, said outer race secured to said park eccentric;
- a torsional return spring in association with said park eccentric;
- and
- an eccentric stop block mounted to said system to limit the rotation of said park eccentric.
1 more element
A clutch assembly for a windshield wiper system, comprising:
- an input shaft to said clutch assembly;
- an output shaft in association with said clutch assembly, said output shark adapted to drive a windshield wiper arm linkage;
- a sprag clutch having an inner race and an outer race, said inner race in association with said input shaft to turn as said input shaft turns;
- and
- a torsional return spring in association with said sprag clutch and a park eccentric such that during normal running operation of the windshield wiper system the torsional return spring will be in its minimum tension position but during the parking of the windshield wiper system the torsional return spring will be placed in tension.
2 more elements
Dependencies are inferred from the claim text.