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US Patent 8011062 Vacuum cleaner motor assembly

Patent 8011062 was granted and assigned to Dyson (company) on September, 2011 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee
Dyson (company)
Dyson (company)
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
8011062
Patent Inventor Names
Guy James Burlington1
Date of Patent
September 6, 2011
Patent Application Number
11579632
Date Filed
May 5, 2005
Patent Primary Examiner
‌
David Redding
Patent abstract

A vacuum cleaner motor assembly includes a motor in a bucket, configured so as to drive a fan to provide airflow. An epicyclic gear system is attached to the output shaft of the motor, to produce an output of reduced rotational speed. The output is employed to drive an agitator via a belt. The belt is driven at a reduced rotational speed to that achievable hitherto, and thus there is reduced wear on the belt. The provision of a gear arrangement mounted directly to the motor casing provides a compact assembly. One of the epicyclic gears, such as the ring gear, is arranged to slip with respect to a clutch member if the agitator becomes jammed. An actuator switches off the motor if the heat of friction of the slipping gear exceeds a predetermined value, or if the slipping gear rotates at a speed above a predetermined value. Thus, the motor switches off before damage occurs to any of the components of the system.

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