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US 5,470,035 AGranted
Electrical switch stand
AssigneeNational Trackwork, Inc.
InventorIsaac Sargis
Life of this patent
Estimating the term…
Abstract
An electrical railroad switch stand is disclosed in which a handle connected to a switching device is moved between a first position and a second position by use of an actuator powered by a motor. The direction of rotation of the shaft of the motor is controlled to control the position of the handle. Lights are provided to indicate the status of the switching device.
Claims17
An electrical railroad switch stand for moving switching rails of a railroad track comprising:
- (a) switch means for switching rails of a railroad track;
- (b) handle means for actuating said switch means, said handle means movable from a first position to a second position;
- (c) actuator means coupled to said handle means;
- said actuator means including an actuator rod and housing means for receiving said actuator rod, said actuator rod movable between an extended position and a retracted position with respect to said housing means, said actuator rod controlling the position of said handle means;
- (d) motor means including a motor shaft coupled to said actuator means for moving said actuator rod between said extended position and said retracted position, said motor shaft rotatable in a first direction of rotation and a second direction of rotation;
- (e) means for controlling the direction of rotation of said motor shaft;
- and
- (f) brake means for physically preventing rotation of said motor.
5 more elements
An electrical railroad switch stand for moving switching rails of a railroad track comprising:
- (a) switch means for switching rails of a railroad track;
- (b) handle means for actuating said switch means, said handle means movable from a first position to a second position;
- (c) a lever arm attached to said handle means;
- (d) actuator means attached to said lever arm;
- said actuator means including an actuator rod and housing means for receiving said actuator rod, said actuator rod movable between an extended position and a retracted position with respect to said housing means, said actuator rod controlling the position of said handle means;
- (e) said actuator means further including a rotatable threaded rod coupled to said actuator rod, wherein rotation of said threaded rod effects movement of said actuator rod between said retracted position and said extended position;
- (f) motor means including a motor shaft;
- said motor shaft rotatable in a first direction and in a second direction;
- (g) brake means coupled to said motor shaft for stopping rotation of said motor shaft, said brake means including a brake shaft;
- (h) said brake shaft coupled to said threaded rod to transfer rotational movement of said brake shaft to said threaded rod;
- and
- (i) means for controlling the direction of rotation of said motor shaft.
9 more elements
Dependencies are inferred from the claim text.