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Infusion device and driving mechanism and process for same with actuator for multiple infusion uses

  • US 6,932,584 B2
  • Filed: 12/26/2002
  • Issued: 08/23/2005
  • Est. Priority Date: 12/26/2002
  • Status: Active Grant
First Claim
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1. A coil cup composed of a magnetizable material, the coil cup comprising:

  • a generally annular inner wall having one end defining an inner pole surface of the coil cup;

    a generally annular outer wall having a first inner diameter and a first outer diameter, the outer wall having a generally annular shelf portion extending from the outer wall towards the inner wall, the shelf portion having a second inner diameter and a second outer diameter, the second inner diameter being smaller than the first inner diameter, the shelf portion having a second end defined by the second inner and outer diameters, the second end defining at least a portion of an outer pole surface of the coil cup; and

    a generally annular interior between the inner and outer walls, the annular interior containing a coil, wherein the shelf portion has an angled edge.

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