04636934 is referenced by 96 patents and cites 21 patents.

An electro/hydraulic system for controlling remotely located valves or other types of hydraulically powered equipment. The electrical system uses multiple microprocessors to send, validate, and execute commands. Microprocessors at the central control station constantly communicate with and monitor similar microprocessors at remote locations. The validation of commands increases safety and reliability of the present invention as compared to direct electrical control systems. The electrical components of the present invention greatly decrease the lapse time between initiating a command at the central location and equipment response at the remote location. The system also monitors and displays temperature, pressure, and valve position.

Title
Well valve control system
Application Number
6/612409
Publication Number
4636934
Application Date
May 21, 1984
Publication Date
January 13, 1987
Inventor
Larry C Wortham
Garland
TX, US
Cary G Mondon
Carrollton
TX, US
Oliver W McCracken
Pauls Valley
OK, US
Kenneth L Schwendemann
Lewisville
TX, US
Agent
Thomas R Felger
Assignee
Otis Engineering Corporation
TX, US
IPC
G05D 7/06
G06F 15/46
G06F 11/08
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