US Patent 7398575 Electric toothbrush having a flexible drive shaft
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Patent Inventor Names
John Geoffrey Chan0
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Patent abstract
An electric toothbrush is disclosed comprising a body, a head, and a neck extending therebetween. A motor, drive train, and one or more batteries impart motion to the collection of movable bristles. A spring component is provided in the drive train that is configured to absorb excessive loads that would otherwise be transmitted to the motor. Reducing or eliminating application of such excessive loads on the motor extends battery life.
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US Patent 07398575 Electric toothbrush having a flexible drive shaft US Patent 7398575 Electric toothbrush having a flexible drive shaft
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Patent Number
073985750
Patent Number
73985750
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Official Website
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Patent Jurisdiction
Patent Number
073985750
Date of Patent
July 15, 2008
0Patent Application Number
110525930
Date Filed
February 7, 2005
0Official Website
Patent Primary Examiner
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US Patent 07398575 Electric toothbrush having a flexible drive shaft
Infobox
Is a
Patent jurisdiction
Patent number
07398575
Date of patent
July 15, 2008
Patent application number
11052593
Date Filed
February 7, 2005
Patent primary examiner
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