Patent ID: 7043794
Filing Date: 2006-05-16
Classification: A47L

Abstract:
1. A self propelled vacuum cleaner comprising: a base having a suction inlet; an upright housing pivotally mounted on said base; a suction source disposed in one of said base and said upright housing to generate an airflow at said suction inlet; a filter chamber mounted in one of said base and said upright housing and in communication with said suction inlet and said suction source; a drive motor mounted to one of said base and said upright housing; a driven wheel operatively connected to said drive motor to propel said base; and a handle assembly mounted to said upright housing, wherein said handle assembly comprises: a handle position sensor assembly, comprising a Hall sensor electronically connected to said drive motor, wherein said handle position sensor assembly is configured to communicate with said drive motor to control delivery of proportionally varying amounts of power to said drive motor.