Abstract: According to the invention, an improved connector is provided between a windshield wiper arm and blade. The wiper arm has a trunnion member which cooperates with a cam surface on a socket associated with the wiper blade. Upon relatively rotating the wiper arm and blade, the trunnion travels along the cam surface and causes the blade to be conformingly reoriented relative to the windshield. The cam surface is chosen depending upon the configuration of the windshield.

Abstract: A driving mechanism for reciprocating a windshield wiper arm having maximum velocity at the mid-portion of the wiper stroke and zero velocity and minimum acceleration at the outboard ends of the stroke. The driving mechanism includes a slotted follower having a semicircular shape with ends pivotally secured to a housing. An output drive shaft extends from the motor housing and has a curved crank attached thereto for rotation. The crank includes a pin at one end which extends into the follower slot for converting the rotary motion of the output drive shaft into reciprocable motion of the follower. The follower transmits the reciprocable motion to a drive shaft connected to the wiper arm for reciprocating the wiper across the windshield surface.