Speed controller for drilling rig traveling block

Details Speed controller for drilling rig traveling block Speed controller for drilling rig traveling block

1991-05-03

1994-08-30

Matecki, Katherine

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

254378, B66D 148

Patent

active

053420209

ABSTRACT:
A controller for a drilling rig traveling block is disclosed utilizing an absolute position locator and a processor for employing various operating fixed and variable parameters for controlling the speed of travel of the traveling block. As approach limits are reached in either the ascending or descending mode, the position input enters the calculations so that the traveling block is effectively controlled at high speed while safely avoiding an upward or a downward collision. Operation, once the parameter are inputted, is independent of operator control except for override operation.

REFERENCES:
patent: 4434971 (1984-03-01), Cordrey
patent: 4524952 (1985-06-01), Rome et al.
patent: 4591131 (1986-05-01), Rhoads
patent: 4875530 (1989-10-01), Frink et al.
Linear Displacemetn Transducer, Description of unknown date.

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