A yoke for a pipe handling crane. The yoke includes a magazine having storage slots for tubular pipes, and a pipe lifting unit having a lifting tool. The lifting tool supplies a tubular pipe to and retrieves a tubular pipe from the magazine.

A yoke for a pipe handling crane. The yoke includes a magazine having storage slots for tubular pipes, and a pipe lifting unit having a lifting tool. The lifting tool supplies a tubular pipe to and retrieves a tubular pipe from the magazine.

Magnetic coupling devices are disclosed having magnetic field sensors. The magnetic coupling device may include a calibration module for calibrating the magnetic coupling devices.

A magnet chuck has a piston assembly including a tube shaped permanent magnet and a core yoke able to move on the interior of a cylinder tube. The permanent magnet is provided on the outer periphery of the core yoke, is magnetized in the radial direction, and a magnetic sensor is attached to the side surface of the cylinder tube.

A magnetic device for magnetically coupling to a ferromagnetic body, comprises a housing having a central bore. A plurality of pole sectors arranged within an envelope of the central bore and forming a workpiece contact interface of the magnetic device, each of the plurality of pole sectors comprising a plurality of spaced-apart pole portions arranged at respective distances, wherein a recess of a plurality of recesses separates each pole portion of the plurality of pole portions, wherein a first sector forms a first pole of the magnetic device and a second sector forms a second pole of the magnetic device. A first permanent magnet. A second permanent being moveable relative to the first permanent magnet. And, an actuator operatively coupled to the at least one second permanent magnet to move the at least one second permanent magnet relative to the at least one first permanent magnet.

Magnetic coupling devices are disclosed which may be configured in at least three states. The various states may be provided through one or more of altering a position of a permanent magnet relative to another permanent magnet and altering a current level in a coil surrounding a permanent magnet.

A magnetic chuck has a piston assembly that contains a cylindrical permanent magnet and a core yoke. The piston assembly is movable inside a cylinder tube. The permanent magnet is provided on the outer periphery of the core yoke and is magnetized in the radial direction.

Magnetic coupling devices are disclosed which may be configured in at least three states. The various states may be provided through one or more of altering a position of a permanent magnet relative to another permanent magnet and altering a current level in a coil surrounding a permanent magnet.

Present embodiments relate to an apparatus and method which separates tie plates. More specifically, and without limitation, present embodiments relate to a tie plate separator which can retrieve tie plates from a pile and separates such for placement on a feeder, such as a conveyor for sequential feeding of the tie plates.

Present embodiments relate to an apparatus and method which separates tie plates. More specifically, and without limitation, present embodiments relate to a tie plate separator which can retrieve tie plates from a pile and separates such for placement on a feeder, such as a conveyor for sequential feeding of the tie plates.