US2006194528A1PendingUtilityA1

Rotary work tool with orbiting planetary gears containing eccentric axes for the attachment of polishing or sanding platens

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Individually held — no corporate assignee on recordPriority: Mar 28, 2003Filed: Mar 28, 2003Published: Aug 31, 2006
Est. expiryMar 28, 2023(expired)· nominal 20-yr term from priority
Inventors:Philip RawlinsMatthew J. Carr
B24B 41/047B24B 47/12B24B 23/03B24B 7/186
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PatentIndex Score
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Claims

Abstract

A work tool comprising: a principle drive shaft with a sun gear attached thereto; at least two planetary gears distributed about the circumference of the sun gear at substantially equal angular separations; and a carriage for constraining the planetary gears such that they maintain their angular separation about the axis of the principal drive shaft; wherein each planetary gear has an eccentric axis in addition to its rotational axis constrained by the carriage, such that each planetary gear can drive, in use, a platen around the respective eccentric axis.

Claims

exact text as granted — not AI-modified
1 . A work tool comprising: 
 a principal drive shaft with a sun gear attached thereto;    n planetary gears distributed about the circumference of the sun gear at substantially equal angular separation; and    a carriage for constraining the planetary gears such that they maintain their angular separation about the axis of the principal drive shaft; wherein    each planetary gear has an eccentric axis in addition to its rotational axis constrained by the carriage, such that each planetary gear can drive, in use, a platen around the respective eccentric axis, and wherein    the rotation of the eccentric axis of a first planetary gear about its associated rotation axis has a phase difference in a clockwise direction of 2π/n relative to the rotation of the eccentric axis of a second planetary gear about its associated rotational axis, the second planetary gear being adjacent to the first planetary gear in a clockwise direction.    
   
   
       2 . A work tool according to  claim 1 , wherein the principal drive shaft is connected to a motor.  
   
   
       3 . A work tool according to  claim 1 , wherein the platens can rotate freely.  
   
   
       4 . A work tool according to  claim 1 , wherein the platens are partially rotationally constrained.  
   
   
       5 . A work tool according to  claim 1 , arranged to be a polisher.  
   
   
       6 . A work tool according to  claim 1 , arranged to be a sander.

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