Removable Window Wiper Unit with Dual Vacuum-Magnetic Attachment

The patent implements a dual attachment mechanism where a permanent magnet provides continuous background attraction force to the ferromagnetic vehicle body, creating a safety reserve. The vacuum pad operates alongside this magnetic force, so that if vacuum pressure is lost, the magnetic attraction maintains attachment. This beforehand cushioning through redundant magnetic attachment prevents the harmful effect of complete detachment.

The patent merges two different attachment mechanisms - magnetic attraction and vacuum adhesion - into a single hybrid system. The permanent magnet provides attachment to ferromagnetic surfaces, while the vacuum pad provides attachment to non-magnetic surfaces like glass and plastic. This merging allows the wiper to be universally compatible with all common vehicle body materials while maintaining secure attachment through the combined forces of both mechanisms.

The patent replaces the traditional mechanical screwing or tethering system with a hybrid magnetic-vacuum attachment mechanism. The permanent magnet and vacuum pad work together to provide secure attachment without requiring any mechanical fasteners, holes, or complex mounting procedures. This substitution maintains strong attachment security while dramatically simplifying installation to merely positioning the device and activating the vacuum pump.

The patent replaces the traditional DC motor with a servo motor that provides precise angular control for the wiper arm. This substitution enables compact design while maintaining sufficient power because the servo motor can be optimized for high torque at low speeds, which is ideal for wiper applications. The servo motor's electronic control system allows for efficient power usage and precise motion control, achieving both compactness and adequate power for various vehicle and application types.