About 2 results
https://drivepatents.com/patents/1091906 · 12 Nov 2003
The device has transverse sliding strips, each with two suspended lever devices joined to holding elements in longitudinal carrying tubes (18), a transverse carrying element joined to the carrying tubes and spring devices (34) opposing the torque produced ...
https://drivepatents.com/patents/1111245 · 1 Aug 2001
The current take-off device (10) has a wiper (16) contacting an overhead current wire supported by lower and upper lever arms (12,14), acted on by a drive (26) for raising and lowering the wiper. The drive uses a hose element (28) supplied with a pressure ...