Self-deicing windshield wiper

Details Self-deicing windshield wiper Self-deicing windshield wiper

1980-09-11

1982-01-12

Feldman, Peter

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

1525038, B60S 104

Patent

active

043097898

ABSTRACT:
A self-deicing automotive windshield wiper system comprises a flexible wiper blade conforming to the contour of the windshield, with an expansible air-tight internal cavity extending along essentially the entire length thereof. The flexible outer walls of the wiper blade abut the internal cavity and are influenced by expansion of the cavity. An air fitting, mounted to the outside of the wiper blade communicates with the cavity. A flexible tubing connected to the fitting joins the wiper blade cavity to a pump or compressor producing a pulsating compressed air output. The pulsating air supply causes the expansible cavity to alternately expand and contract, and the pulsations are transferred to the flexible outer walls, causing them to expand and contract in unison. The flexing of the outer walls shatters any accumulations of ice clinging to the outer walls.

REFERENCES:
patent: 3048872 (1962-08-01), Kerrigan
patent: 3371368 (1968-03-01), Walker
patent: 3418676 (1968-12-01), Byezkowski et al.
patent: 3431577 (1969-03-01), Minsky
patent: 4208758 (1980-06-01), Timmis et al.

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