Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1993-02-12
1994-03-01
Gerrity, Stephen F.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525035, B60S 132
Patent
active
052896072
ABSTRACT:
A screen wiping apparatus, for example for a motor vehicle windscreen, comprises a wiper arm which is articulated about a pivot axis on a drive head, with means being arranged between the drive head and the wiper arm so as to apply a wiping torque to the latter. These torque-applying means comprise at least one spring which applies to the arm a substantially constant nominal wiping torque, together with an actuator for applying a complementary torque. The actuator comprises a body associated with the drive head, together with an output ram sliding in the body and coupled to the wiper arm. The output member of the actuator is coupled to the wiper arm by means of a coupling member which is displaced in a direction at right angles to the pivot axis, and which has a working surface which cooperates with a roller rotatably mounted about a fixed axis of the wiper arm parallel to the pivot axis.
REFERENCES:
patent: 2784438 (1957-03-01), Peterson
patent: 4718139 (1988-01-01), Okuda et al.
patent: 5129123 (1992-07-01), Shirato
Gerrity Stephen F.
Graham Gary K.
Paul Journee S.A.
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