Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Wallace Martindell Catanach, III0
John Patrick Dowell0
Maurizio Biagiotti0
Michael Lee Ashton0
Charles David Crawford0
Edward Armand Croteau0
Date of Patent
December 26, 2006
Patent Application Number
11005894
Date Filed
December 6, 2004
Patent Primary Examiner
Patent abstract
A control mechanism for moving switch points on a railroad track, having a drive screw driven by a motor, a traveling block moving along the drive screw to position the switch points, an end stop on the drive screw for limiting movement of the traveling block, a hand crank for manually turning the drive screw, and a torque limiting clutch on the hand crank.
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