Electricity: motive power systems – Linear-movement motors
Reexamination Certificate
2005-03-14
2009-12-15
Ip, Paul (Department: 2837)
Electricity: motive power systems
Linear-movement motors
C318S444000, C318S632000, C388S819000
Reexamination Certificate
active
07633246
ABSTRACT:
A linear portable actuator including a direct current electric motor (2) rotationally driving a screw with the aid of a reduction element, wherein the motor (2) is controlled by an electronic module (5) comprising means (12) for the acquisition of instantaneous intensity of a supply current for the motor. Further, the electronic module (5) also comprises means (13) for calculating the differential coefficient in relation to supply-current intensity time, which are connected to means (14) for comparing the differential coefficient to a first predetermined value, and a comparing means controlling means (15) for switching off the supply current it the differential coefficient is greater than the first predetermined value.
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Audinet Jean-Pierre
Bernier Frédéric
Faucher Christophe
Ip Paul
VIRAX
Wenderoth , Lind & Ponack, L.L.P.
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