Apparatus for adjusting a pressing force of a wiper

Details Apparatus for adjusting a pressing force of a wiper Apparatus for adjusting a pressing force of a wiper

1990-10-22

1992-07-14

Hornsby, Harvey C.

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

B60S 134, B60S 132

Patent

active

051291231

ABSTRACT:
There is disclosed an apparatus for adjusting a pressing force of a wiper. The apparatus includes a spring, an operation lever connected to a proximal end of the spring, an arm head for swayably supporting the top of this lever, an arm member provided at a proximal end of the lever, and a cam member. The arm member impinges upon the cam member rotated by a driving motor to undergo a displacement of the spring biasing direction towards the window face. The cam member has its cam face arranged to vary an impingment position of the arm member from a large diameter portion via a stepped portion to a small diameter portion by rotation of the cam member.

REFERENCES:
patent: 2289552 (1942-07-01), Rousseau
patent: 4370774 (1983-02-01), Bienert et al.

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