Elevator load control arrangement for a computer-controlled oil

Details Elevator load control arrangement for a computer-controlled oil Elevator load control arrangement for a computer-controlled oil

1977-03-15

1979-02-13

Wise, Edward J.

Boots, shoes, and leggings

214 25, 340666, E21B 1900, G06F 1520

Patent

active

041398912

ABSTRACT:
A computer-controlled oil drilling derrick is characterized by apparatus for determining the load supported by a traveling block during motion thereof from a first to second position within an oil drilling rig. The apparatus is operative to output a signal functionally related to the net load on the traveling block. Further, the apparatus outputs an appropriately scaled signal functionally related to the load on the traveling block when in a substantially static condition.

REFERENCES:
patent: 3660649 (1972-05-01), Gilchrist et al.
patent: 3752966 (1973-08-01), Foy, Jr. et al.
patent: 3761701 (1973-09-01), Wilder et al.
patent: 3881695 (1975-05-01), Joubert
patent: 3921152 (1975-11-01), Hagar
patent: 4042123 (1977-08-01), Sheldon et al.

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