Block position and speed transducer for a computer-controlled oi

Details Block position and speed transducer for a computer-controlled oi Block position and speed transducer for a computer-controlled oi

1977-03-15

1978-10-10

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92DN, 235 92MS, 235 92CV, 235 92R, 235 92PE, G06M 314

Patent

active

041198379

ABSTRACT:
Apparatus for indicating the position of a traveling block along a vertical axis within a computer-controlled oil drilling rig is characterized by a magnetically responsive element for generating a pulse when a metallic member, movable with the traveling block, passes in proximity thereto. A counter is operatively associated with the magnetically responsive element to count the pulses therefrom. An electrical signal of a predetermined magnitude functionally related to the output of the counter is representative of the position of the traveling block.

REFERENCES:
patent: 3445640 (1969-05-01), Harrison et al.
patent: 3602700 (1971-08-01), Jerva et al.
patent: 3648029 (1972-03-01), Ungnadner
patent: 3811648 (1974-05-01), Ream et al.

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