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Hybrid motor

  • US 6,093,995 A
  • Filed: 01/25/1999
  • Issued: 07/25/2000
  • Est. Priority Date: 09/09/1993
  • Status: Expired due to Term
First Claim
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1. A hybrid actuator comprising:

  • a housing defining a fluid reservoir;

    an electrical actuator member within said housing, said member having a major movable displacing face for displacing fluid in the reservoir and forming a bounding wall of the reservoir, said fluid filling the reservoir; and

    a piston slidably extending into the reservoir such that motion of the piston tracks displacement of fluid within the reservoir, displacement of fluid being caused by motion of said displacing face,wherein said hybrid actuator produces a measurable stroke when said electrical actuator member is electrically actuated,wherein said piston includes means for enhancing the stroke of said hybrid actuator, andwherein said piston extends through two opposed ends of said housing and is of different diameters at each said end.

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