Patent ID: 8680816
Filing Date: 2014-03-25
Classification: A47L,G05D,H02J

Abstract:
1. A battery charger for use with a mobile robotic vacuum cleaner, said mobile robotic vacuum cleaner comprising at least one ultrasonic sound wave receiver and a plurality of electrodes, said battery charger comprising: a battery charger body, said battery charger body comprising a charging side for receiving said mobile robotic vacuum cleaner and a plurality of electrically conductive members located on said charging side for the contact of the electrodes of said mobile robotic vacuum cleaner for enabling said mobile robotic vacuum cleaner to be electrically charged by said battery charger body, said charging side comprising a groove, a sound wave transmitter mounted in said groove and adapted for transmitting a sound wave and a baffle mounted in said groove in a front side relative to said sound wave transmitter and adapted for reflecting the sound wave transmitted by said ultrasonic transmitter toward two opposite lateral sides of said charging side along said groove to form two opposing sound wave beams for receiving by said sound wave receiver of said mobile robotic vacuum cleaner for determination of the steering direction.