Variable reach windshield wiper system

Details Variable reach windshield wiper system Variable reach windshield wiper system

1985-02-28

1986-02-18

Feldman, Peter

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

B60S 126

Patent

active

045702837

ABSTRACT:
A windshield wiper system includes a transmission shaft on a vehicle body rotatable about an axis thereof through a wipe arc, a drive plate on the transmission shaft perpendicular to the axis, a wiper support arm rotatable with the drive plate and radially shiftable relative to the axis, a scissors linkage pivoted at one end in the transmission shaft and connected at the opposite end to the support arm, and a cam channel on the vehicle body in which is received a follower connected to the scissors linkage at a control pivot of the latter between the ends thereof. As the transmission shaft angularly oscillates, the drive plate and wiper arm and the latter, in turn, angularly oscillates the scissors linkage, the cam channel causes the follower to radially displace the scissors linkage control pivot so that the scissors linkage expands and contracts and concurrently radially extends and retracts the wiper arm thereby to vary the radial reach thereof.

REFERENCES:
patent: 864741 (1907-08-01), Himrod
patent: 2629891 (1953-03-01), Greene
patent: 3831220 (1974-08-01), Gmeiner et al.
patent: 3831221 (1974-08-01), Gmeiner et al.
patent: 4418440 (1983-12-01), Sigety, Jr.
patent: 4447928 (1984-05-01), Schuch et al.

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