Portable display and control terminal for wells

Details Portable display and control terminal for wells Portable display and control terminal for wells

1984-02-13

1986-11-11

Harkcom, Gary V.

Boots, shoes, and leggings

346 33WL, 350331T, 166 53, G06F 1520, G02F 113

Patent

active

046226354

ABSTRACT:
A portable terminal for plugging into a well production control system for displaying data from the control system and for entering data into the control system. A liquid crystal display module on the terminal displays both graphic and printed data. A keyboard on the terminal provides a means for entering data and control signals into the control system. A temperature compensating circuit adjusts the brightness contrast on the display module so the terminal can be used outdoors over a wide range of temperatures.

REFERENCES:
patent: 3770961 (1973-11-01), Westell
patent: 4031529 (1977-06-01), Borel et al.
patent: 4104727 (1978-08-01), Washizuka et al.
patent: 4115870 (1978-09-01), Lowell
patent: 4242679 (1980-12-01), Morozumi et al.
patent: 4264148 (1981-04-01), Gobl-Wunsch et al.
patent: 4307395 (1981-12-01), Standish
patent: 4338600 (1982-07-01), Leach
patent: 4390874 (1983-06-01), Woodside et al.
patent: 4460247 (1984-07-01), Hilsum et al.
patent: 4487061 (1984-12-01), McTamaney et al.

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