Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1977-10-31
1980-02-05
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
324 78D, 340784, 350333, G01D 700
Patent
active
041875052
ABSTRACT:
Display apparatus for displaying the magnitude of a physical parameter includes a plurality of display regions each of which contains a plurality of electrically-operable display sections. The display apparatus also includes an electric circuit means responsive to an electric signal representative of the said magnitude which is arranged to operate the display sections in a cyclic manner in accordance with that magnitude. To this end, the electric circuit means is arranged, during a first period of each cycle, to effect operation of any display regions in which all sections therein require to be operated and, during a second period of each cycle, to effect appropriate operation of any other display region in which only at least one of the display sections thereof require to be operated.
REFERENCES:
patent: 3922666 (1975-11-01), Inami et al.
patent: 3978322 (1976-08-01), Dobkin
patent: 4040719 (1977-08-01), Schiebelhuth
patent: 4060801 (1977-11-01), Stein et al.
Kollar Bela
Morley Colin A.
Thomas Richard N.
Smiths Industries Limited
Trafton David L.
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