Screen wiper apparatus including controlled means for varying th

Details Screen wiper apparatus including controlled means for varying th Screen wiper apparatus including controlled means for varying th

1992-09-24

1995-02-28

Scherbel, David A.

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

1525035, B60S 132

Patent

active

053924851

ABSTRACT:
A screen wiper apparatus, especially for a motor vehicle, is of the kind comprising a wiper arm which carries at least one wiper blade and which is mounted pivotally about a pivot axis on a drive head for the arm. Torque applying means, coupled between the drive head and the wiper arm, apply a wiping torque to the latter, and include at least one spring which applies a substantially constant nominal torque to the wiper arm. The torque applying means includes at least one complementary spring for applying a load to the wiper arm wherein that the algebraic value of this load is adjustable in such a way that the value of the wiping torque can be increased or reduced as a function of at least one operating parameter of the vehicle.

REFERENCES:
patent: 2799039 (1957-07-01), Oishei
patent: 4718139 (1988-01-01), Okuda et al.

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