Variable pressure windshield wiper arm

Details Variable pressure windshield wiper arm Variable pressure windshield wiper arm

1993-09-07

1995-06-06

Scherbel, David A.

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

1525035, 1525031, 192 84B, B60S 132, B60S 134

Patent

active

054210550

ABSTRACT:
An automotive windshield wiper system with adjustable wiping pressure includes a drive shaft, a head rigidly mounted to the drive shaft for unitary rotation therewith, a wiper arm pivotally connected to the head at a first end and retaining a wiper blade at a second end, and a spring between the head and the wiper arm inducing a force pivoting the wiper arm toward an associated wiping surface. A controller is disposed between the spring and the head and relies exclusively on the relative rotation between the wiper arm and the vehicle body as a source of all motive power to selectively displace an end of the spring and thereby vary the force on the wiper arm.

REFERENCES:
patent: 3044593 (1962-07-01), Scarrott et al.
patent: 4718139 (1988-01-01), Okuda et al.
patent: 4736484 (1988-04-01), Bauer et al.
patent: 4791697 (1988-12-01), Fry
patent: 4993102 (1991-02-01), Honda et al.

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