Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1988-12-20
1990-04-03
Stinson, Frankie L.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525032, 1525027, B60S 132
Patent
active
049128027
ABSTRACT:
A windshield or screen wiper assembly includes a first arm which is rotatably mounted about a first fixed axis and a second arm which is mounted rotatably about a second fixed axis, substantially parallel to the first axis but offset with respect thereto. The two arms are substantially parallel to each other and their ends furthest from the axes of rotation are connected together by means of a link which is pivoted on each of these ends of the arms, while a wiper blade is connected to this link. One of arms is a driving arm while the other arm is freely mounted for rotation about its axis and is driven by the link from the driving arm. The effective lengths of the two arms between their pivots with the link and their axes of rotation are different. The assembly includes a second wiper blade the length of which is much smaller than that of the first blade, the second blade being situated closer to the axes of rotation. The orientation of the second blade with respect to the first blade is different between one extreme position of the sweep and the other, in such a way as to enable the swept area of the surface being wiped to be increased.
REFERENCES:
patent: 2787018 (1957-04-01), Smith
patent: 2821735 (1958-02-01), Perkins et al.
patent: 2915772 (1959-12-01), Ziegler
patent: 3525115 (1970-08-01), Zoltok
patent: 3551938 (1971-01-01), Yonke
patent: 3818535 (1974-06-01), Ito
patent: 4621389 (1986-11-01), Grare
patent: 4641390 (1987-02-01), Mizhalke
Stinson Frankie L.
Valeo Systems d'Essuyage
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