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==Mechanical==
 
==Mechanical==
 
===Omni Wheels and Positioning===
 
===Omni Wheels and Positioning===
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*Omni-wheels are often used to allow for movement on the horizontal axis on a drivetrain, as well as forward and backward movement.
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====History====
 
{{US patent reference
 
{{US patent reference
 
  | number = 1305535
 
  | number = 1305535
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  | title = Vehicle wheel
 
  | title = Vehicle wheel
 
}}
 
}}
   
A variant of the wheel was patented by [[Josef F. Blumrich]] in 1972.
 
A variant of the wheel was patented by [[Josef F. Blumrich]] in 1972.
   
{{US patent reference
 
{{US patent reference
 
  | number = 3789947
 
  | number = 3789947
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