The swing member (63) to be subjected to swinging drive is integrally provided to the output shaft (56) outside the speed reducer case (52), the speed reducer case (52) is provided with a pair of swing regulating portions (61, 62) which prevents the swing member (63) from being moved beyond the wiping-allowable limit angle (b) by contacting the swing member (63). As a result, the swing member (63) and the swing regulating portions (61, 62) can collectively form the regulating member (60). As a result, essential components (such as fixing plate) can be omitted from the conventional wiper apparatus. Therefore, the wiper apparatus can be improved in assembly workability, size and weight by reducing the number of components thereof, and provided with a regulating member (60) which prevents the wiper member being moved beyond the wiping-allowable limit angle (b).

A motor vehicle windshield wiper system includes a windshield wiper and a controller. The controller is configured, in response to a threat of freezing precipitation, to park the windshield wiper in a parked position with a first end of the windshield wiper oriented toward a top edge of the windshield and a second end of the windshield wiper oriented toward a bottom edge of the windshield. A related method of minimizing ice and snow buildup on a windshield wiper is also disclosed.

The invention relates to a drive device 3 comprising an electric motor 10 for driving a windscreen wiper 2 of a motor vehicle in a reciprocating movement and a device for identifying a rest position 4 of said motor 10, said rest position being a position in which the rotation of said motor 10 is stopped in order to stop a reciprocating cycle of the windscreen wiper 2 at the start or end of the upstroke or at the start or end of the downstroke of the windscreen wiper 2, characterized in that said device for identifying a rest position 4 comprises a first and a second angular reference point 20a, 20b, in that said motor 10 is configured for driving said first and second angular reference points 20a, 20b in rotation, the first and second angular reference points 20a, 20b being arranged on a circle C and diametrically opposed, and in that said drive device 3 is configured so that one of the first and second angular reference points 20a, 20b may be chosen to correspond to the rest position 4 of said motor 10.

The invention also relates to a wiping system 1 comprising two drive devices 3.

In accordance with at least one aspect of this disclosure, a system includes a wiper drive shaft configured to drive a wiper arm between a start position and an end sweep position. The wiper drive shaft includes external threads defined therein and at a distal end thereof. An axial length of the external threads along the wiper drive shaft defines the start position and the end sweep position, and a total desired sweep angle between the start position and end sweep position. The wiper drive shaft includes and a first hard stop groove and a second hard stop groove, each defined at a respective first axial offset and a second axial offset from the external threads to define a first hard stop position and second hard stop position.

A windshield wiper system for an aircraft is provided and includes a motor, an output shaft, a wrap spring and crank rocker mechanism (WSCRM) to which the motor and the output shaft are coupled and a controller. By way of the WSCRM, first directional rotation input to the WSCRM from the motor via a two-stage gear reduction is converted such that the output shaft drives wiper blade oscillation through a first sweep angle and second directional rotation input to the WSCRM from the motor is converted such that the output shaft drives wiper blade oscillation through a second sweep angle. The controller is configured to control the motor such that the first directional rotation is continuously or non-continuously input during first or second flight conditions, respectively, and the second directional rotation is continuously input during third flight conditions.

Method for controlling a system for wiping and washing a window (2) of a vehicle, comprising at least two wiping cycles comprising: a first step in which the wiper blade member (1) is actuated in order to move over the window (2) between a first starting position (P0) and an end position (P2), and a second step in which the wiper blade member (1) is actuated in order to move over the window (2) in the opposite direction from the end position (P2) as far as a second starting position (P1),
characterised in that the first cycle which is carried out wipes all the wiping zone with means (10, 13, 14) for projecting a washing liquid which are actuated at least during the first step, and in that a second wiping cycle has the same first starting position (P0) and a second starting position (P1) which is offset towards the end position (P2) relative to the first starting position (P0).

Systems and methods for sensing accumulated residue on a transmission surface of a sensor of an agricultural machine and controlling a cleaning of the transmission surface. Using captured information obtained by the sensor through the transmission surface, a first cleanliness value can be derived and compared with a first threshold. If the first threshold is not satisfied, a cleaning system can be activated. Communication of signals generated using the captured information can also then be suspended or assigned a confidence value. Information subsequently captured by the sensor can be used to derive another cleanliness value for comparison to a second threshold. The subsequently derived cleanliness value can result in at least one of a change in the confidence value, resumption of communication of signals generated using captured information obtained by the sensor, deactivation of the cleaning system, and a change in the aggressiveness of the cleaning system.

A system includes a wiper arm configured to sweep along a sweep zone defined between a start position and an end sweep position, a wiper drive shaft operatively connected at a proximal end to the wiper arm to drive the wiper arm between the start position and the end sweep position, a tracer operatively connected to a distal end of the wiper drive shaft configured to mimic movement of the wiper arm, and one or more position indicators disposed proximate a distal end of the tracer corresponding to at least the start position and the end sweep position, where the distal end of the tracer configured interact with the one or more limiters during operation of the wiper arm.

A windshield wiper system for an aircraft includes a wiper arm and a wiper shaft with a first end connected to a base of the wiper arm. An electric motor is coupled to the wiper shaft to rotationally drive the wiper shaft. The windshield wiper system also includes a brake system. The brake system includes an electromagnet comprising an energized mode and a de-energized mode. The brake system also includes an anti-rotation assembly with a first element and a second element. The first element is connected directly to the wiper shaft. The second element is rotationally stationary relative the wiper shaft and the first element. The second element is configured to interlock with the first element to prevent rotation of the first element and the wiper shaft when both the electromagnet is in the de-energized mode and the wiper arm is in a park position.