The invention relates to a drive arm for driving a wiper blade intended for a motor vehicle, the drive arm extending in a longitudinal direction (X), the drive arm comprising at least one first attachment means (224) for a first end of an elastic return device and at least one second attachment means (234) for the first end of the elastic return device, characterized in that a first distance (d1) measured parallel to the longitudinal direction (X) between the first attachment means (224) and the second attachment means (234) is not zero.

The invention relates to wiper arm assembly (4) including a wiper arm (11) configured to support a wiper blade; a mounting member (9) configured to be secured to a wiper shaft (7); a spring member (14) including a first spring end portion (14.1) operatively connected to the wiper arm (11) and a second spring end portion (14.2) operatively connected to the mounting member (9); and a force adjusting device (15) configured to adjust the biasing force applied by the spring member (14) to the wiper arm (11). The force adjusting device (15) includes an actuating member to which is connected the first spring end portion (14.1), the actuating member being movably mounted on the wiper arm (11) between a first adjusting position and a second adjusting position, and being configured to displace the first spring end portion (14.1) between a first spring position in which the spring member (14) applies a first biasing force to the wiper arm (11) and a second spring position in which the spring member (14) applies a second biasing force to the wiper arm (11) which is higher than the first biasing force.

The invention relates to a drive arm for driving a wiper blade intended for a motor vehicle, the drive arm extending in a longitudinal direction (X), the drive arm comprising at least one first attachment means (224) for a first end of an elastic return device and at least one second attachment means (234) for the first end of the elastic return device, characterized in that a first distance (d1) measured parallel to the longitudinal direction (X) between the first attachment means (224) and the second attachment means (234) is not zero.

A wiper system for wiping off deposits deposited on a surface of a wiped member comprising a pair of carriages attached to frame members holding the wiped member so as to face each other across the wiped member and moving back and forth over the frame members along two facing sides of the wiped member, a pair of wiper arms respectively attached to the pair of carriages and extending from the frame member sides to the wiped member sides, and a pair of wiper blades respectively attached to the pair of wiper arms, extending substantially parallel to the other two facing sides of the wiped member, and arranged at the surface of the wiped member.

A wiper system for wiping off deposits deposited on a surface of a wiped member comprising a pair of carriages attached to frame members holding the wiped member so as to face each other across the wiped member and moving back and forth over the frame members along two facing sides of the wiped member, a pair of wiper arms respectively attached to the pair of carriages and extending from the frame member sides to the wiped member sides, and a pair of wiper blades respectively attached to the pair of wiper arms, extending substantially parallel to the other two facing sides of the wiped member, and arranged at the surface of the wiped member.