A variable curvature wiper comprises a wiper arm with a first and second distal ends. The first distal end is pivotally supported on a pivot post. A flexible wiper blade has a first end, a second end and a mounting hub. The mounting hub is pivotally attached to the second distal end of the wiper arm. A first push rod includes a first end attached to the first end of the wiper blade and a second end attached to a push rod pivot point. The push rod pivot point is spaced from the pivot post axis. Pivotal motion of the wiper arm about the pivot post axis in a first direction causes the first push rod to push against the first end and flex the wiper blade. Pivotal motion of the wiper arm about the pivot post axis in a second direction causes the first push rod to pull the first end of the wiper blade back toward a flat position.

The invention relates to a wiper arm device (100) for cleaning a vehicle window (1), with a wiper arm head (10) that can be at least indirectly connected by means of a wiper arm rod (22) with a wiper blade (5) at a first end region with a drive shaft (12) and a second end region lying opposite the first end region, wherein the wiper arm rod (22) is pivotably mounted on the side facing the wiper arm head (10) in a first pivoting axis (20). It is provided according to the invention that a spacer device (40) is arranged on the wiper arm rod (22), and designed to hold the wiper arm rod (22) a constant distance (a) away from the vehicle window (1).

The invention relates to a wiper arm arrangement (100) for cleaning a vehicle window (1), with a wiper arm head (10) that can be at least indirectly connected by means of a wiper arm rod (22) with a wiper blade (5) at a first end region with a drive shaft (12) and a second end region lying opposite the first end region, wherein the wiper arm rod (22) is pivotably mounted on the side facing the wiper arm head (10) in a first pivoting axis (20). The invention provides that the wiper arm rod (22) consist of two elements (26, 28), a first element (26) connected with the wiper arm head (10) and a second element (28) that can be connected at least indirectly with the wiper blade (5), and that the two elements (26, 28) be arranged so that they can pivot relative to each other in a second pivoting axis (30), wherein the second pivoting axis (30) is arranged essentially perpendicular to the first pivoting axis.

Windscreen wiper device for windscreens with variable curvature, comprising a secondary shaft rotating about its secondary axis between starting and final secondary positions, and a primary shaft on which the wiper blade arm is mounted rotating in an alternating manner about its own primary axis between starting and final primary positions. The primary shaft is mounted in the secondary shaft, such that their Corresponding axes form a first acute angle () with respect to one another. The device further comprises a delay device kinematically connecting the driving means with the secondary shaft to cause rotation in the secondary shaft such that when the primary shaft has performed 50% of the rotation between the starting primary position and the final primary position, the secondary shaft has performed between 0% and 30% of the rotation between the starting secondary position and said final secondary position.

A wiper system 1 has a wiper blade 5 for performing a reciprocating wiping operation on a windshield glass 6 and a brushless motor 2 for causing the wiper blade 5 to perform the reciprocating wiping operation. The motor used as the brushless motor 2 is provided with a rotary shaft for reciprocating the wiper blade 5, has a degree of operation freedom in three axial directions, and is rotatable about axes of two directions orthogonal to the rotary shaft. The wiper blade 5 operates at error angles different in direction between during a forward-path wiping operation and during a return-path wiping operation. When the wiper blade 5 reaches a reversing position, the brushless motor 2 is made to rotate about an axis extending in a extending direction of the wiper blade 5 to change the error angle .

The invention proposes a drive device (10) for driving a windscreen wiper, which comprises a bearing body (12), a drive shaft (20) which is mounted to rotate with respect to the bearing body (12), a guide housing (19) for guiding the drive shaft (20) in rotation about its axis (A1) which is pivot-mounted with respect to the bearing body (12) about an axis (A2) which is orthogonal to the axis (A1) of the drive shaft (20), a drive motor (16) for driving the shaft (20), a rack (30) and pinion (28) mechanism which causes the shaft (20) to pivot in order to vary the inclination of the axis (A1) of the shaft (20) with respect to the bearing body (12) according to the angular position of the drive shaft (20), characterized in that the drive motor (16) is supported by the guide housing (19).

A windshield wiper device for large size curved windshields comprising first and second arms hingedly connected to each other at a distal end by a main spacer and reciprocatingly operable. The device further comprises a windshield wiper blade rockingly mounted relative to said main spacer through rocking means and a secondary spacer mounted on the distal end in redundancy with said main spacer. The rocking means comprise a first toothed member integral with said secondary spacer and a second toothed member integral with said wiper blade, which are mounted meshed with one another to cause the rocking of said wiper blade about time longitudinal axis thereof in the rocking direction opposite to the direction of reciprocating movement of said first and second arms.

An inclination mechanism TM1 is provided at a wiper blade 30. The inclination mechanism TM1 inclines the wiper blade 30 with respect to a surface 11a, so that a center Ct1 of a U-shaped hook part 23b is disposed forward in a wiping direction with respect to a center Ct2 of a blade rubber 50. Accordingly, at the time of each of forward wiping and return wiping of the wiper blade 30, it is possible to correctly incline the blade rubber 50 with respect to the surface 11 a.

A windshield wiper system (3) for a windshield (1) having a curved surface and an oscillating gear drive (2) with a central park position (A). Said system (3) comprises at least one wiper arm (13) and wiper blades (5), said wiper blades (5) being mounted by means of said at least one wiper arm (13) to said oscillating gear drive (2). The windshield (1) and the wiper blade lips (11) have a frictional coefficient (). Two wiper arms (13), two wiper blades (5) each with a fit bolt (20), bearing bushes (10), a prolongation fitting (7) and a rocker (6) are provided. Said two wiper blades (5) are mounted rotatable about a wiper blade rotation axis (9), perpendicular to said oscillatory axis (V) and said longitudinal axis (U). Said wiper blade rotation axis (9) is defined by a center line through the fit bolts (20) mounted opposed to each other on said two wiper blades (5) being essentially parallel with a distance (a) to each other. Said rocker (6) rotatable attaches each of the two wiper blades (5) by means of the fit bolt (12). The prolongation fitting (7) rotatable attaches the rocker (6) to the wiper arms (13). The fit bolt (12) with the rocker (6) defines a rocker rotation axis (8) in a plane defined by said oscillatory axis (V) and said longitudinal axis (U) with an inclination angle to the outer surface of the windshield (1) in the central park position (A) providing a distance (b) direct under the wiper blades rotation axis (9) between the windshield (1) and the rocker rotation axis (8) perpendicular to the windshield (1) in the central park position (A) fulfilling $\left[\frac{2.Math.b}{a}\right]<\left(1-\right).$

A wiper system 1 has a wiper blade 5 for performing a reciprocating wiping operation on a windshield glass 6 and a brushless motor 2 for causing the wiper blade 5 to perform the reciprocating wiping operation. The motor used as the brushless motor 2 is provided with a rotary shaft for reciprocating the wiper blade 5, has a degree of operation freedom in three axial directions, and is rotatable about axes of two directions orthogonal to the rotary shaft. The wiper blade 5 operates at error angles different in direction between during a forward-path wiping operation and during a return-path wiping operation. When the wiper blade 5 reaches a reversing position, the brushless motor 2 is made to rotate about an axis extending in a extending direction of the wiper blade 5 to change the error angle .