Patent ID: 7797786

Claim:
A wiper assembly for a vehicle having at least one vision block with an outer face, comprising: a guide cylinder supportable on said vehicle, disposed atop said vision block and substantially parallel to said face of said vision block; a piston disposed in said guide cylinder and displaceable along the length thereof, provided with a magnetic element; a follower mounted on said guide cylinder, displaceable along the length thereof, provided with a magnetic element magnetically coupled to the magnetic element of said piston for displacement therewith; a wiper carried by said follower, having a forwardly projecting portion and a depending portion engaging said outer face of said vision block in wiping relation therewith; means operatively connectable to a source of fluid under pressure for alternatively supplying fluid under pressure to opposite ends of said guide cylinder for reciprocating said piston and correspondingly said wiper along said outer face of said vision block; and a second vision block disposed in end-to-end relationship with said one vision block wherein there is provided a second wiper carried by said follower, having a forwardly projecting portion and a depending portion engaging an outer face of said second vision block.