COMBINATION PNEUMATIC AND ELECTRIC LINEAR ACTUATOR
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United States of America Patent
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Issued Date -
Oct 23, 2008
app pub date -
Jan 25, 2008
filing date -
Jan 26, 2007
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Abandoned
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Abstract
A linear actuator system can move a probe along a substantially linear path. The linear actuator system can have a housing with a magnet mounted in the housing creating a magnetic field. An electric coil piston can be slidably mounted in the housing. The coil piston can have a coil for carrying a current and can be disposed for translational movement within the magnetic field in response to current flow through the coil. The probe can be attached to the coil for translational movement with the coil. In addition, a pneumatic cylinder can be connected to the piston configured to apply a force to the piston in response to an activation of the pneumatic cylinder. Accordingly, the linear actuator system can combine the beneficial compact force capability of pneumatic cylinders with the programmable control features of linear electric motors, which can result in highly repeatable, high-force linear actuator systems. Such a system can last a long time, have 'soft lands' and also work relatively quietly
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