Drive linkage for car windscreen wipers - has hydraulic coupling between wiper stubs and electric drive

The drive linkage is for windscreen wipers for a car. It has two wiper stubs linked by a hydraulic coupling comprising two hydraulic rams (25,28) and two hydraulic pipes. One of the rams is driven directly off the electric servo drive while the other ram acts as a slave cylinder. The hydraulic link...

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1. Verfasser: RACHNER,HORST
Format: Patent
Sprache:eng ; ger
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Zusammenfassung:The drive linkage is for windscreen wipers for a car. It has two wiper stubs linked by a hydraulic coupling comprising two hydraulic rams (25,28) and two hydraulic pipes. One of the rams is driven directly off the electric servo drive while the other ram acts as a slave cylinder. The hydraulic link provides a simple, low cost and flexible drive connection which can be looped over most bulkhead layouts. No complex pump system is required, only a closed loop hydraulic system. The pistons provide a reciprocating drive without any valves.