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Sealed magnetic drive means without a passage through a wall and ultrasound probe comprising an application thereof

  • US 5,357,963 A
  • Filed: 03/23/1993
  • Issued: 10/25/1994
  • Est. Priority Date: 03/23/1992
  • Status: Expired due to Term
First Claim
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1. A magnetic drive device enabling a member placed on one side of a non-magnetic wall to be driven by a rotary drive shaft placed on the other side of the wall, comprising means carrying the driven member for rocking movement thereof about an oscillation axis that is orthogonal to an axis of rotation of the drive shaft, an axially-magnetized magnet securely connected to said driven member and having an outside surface which has a cross-section in a plane containing said oscillation axis and said axis of rotation of the drive shaft that is part circular and centered on said oscillation axis, and an axially-magnetized magnet fixed to said drive shaft and offset from said axis of rotation.

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