Patent ID: 7845044

Claim:
A rubber blade of a wiper mounted to a frame with a predetermined elasticity, wherein the frame is coupled through an adapter to a wiper arm and presses the rubber blade against a windshield surface with a pressing force to simultaneously move the rubber blade across the windshield surface, said rubber blade comprising: a head portion formed at an upper end of the rubber blade and including a pair of substantially uniform width mounting slots adapted to receive the frame therein, the mounting slots defining a first reduced width portion therebetween which acts as a sliding insert for distributing a load from the wiper arm evenly across the rubber blade, the mounting slots further defining a first transverse axis passing centrally therethrough, a second transverse axis extends perpendicular to said first transverse axis and passes substantially through a center of said first reduced width portion and through a central point of the head portion; and a wiping portion, forming a lower portion of the rubber blade, contacting the windshield at a tip end thereof and including a second reduced width portion coupled with the head portion; and the head portion and wiping portion together define a rubber blade profile, wherein a vertical axis passes substantially centrally through the reduced width portions, said central point of the head portion and said tip end, said second transverse axis extending at an offset angle with respect to the vertical axis and intersecting the vertical axis at a point between said mounting slots within said first reduced width portion, said first transverse axis being inclined toward the windshield surface; wherein an offset is defined between the second transverse axis and an axis which is substantially parallel thereto and passes through a central point of the wiping portion, and the rubber blade is held to retain the profile in a disposition of substantially 90 degrees with respect to the windshield surface.