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Sheet driver for use in a drug dispenser

  • US 8,776,788 B2
  • Filed: 11/13/2007
  • Issued: 07/15/2014
  • Est. Priority Date: 11/15/2006
  • Status: Active Grant
First Claim
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1. A spool for winding up a tape comprising a rotatable part for rotating the spool, a hub part mounted to the rotatable part for rotation therewith to wind the tape up thereon, a biasing mechanism for biasing the hub part to rotate relative to the rotatable part to a first rotary position, and a fault indicator for indicating a fault in the tape when the hub part is in the first rotary position on the rotatable part, andwherein the rotatable part has an axis of rotation and wherein the hub part is mounted co-axially to the rotatable part so as to be rotatable relative thereto about said axis.

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