Telephonic communications – Supervisory or control line signaling – Substation originated
Patent
1989-06-15
1991-01-29
Ng, Jin F.
Telephonic communications
Supervisory or control line signaling
Substation originated
379354, 379216, H04M 100
Patent
active
049892410
ABSTRACT:
A memory dial telephone finder includes a casing integrally made on the mainframe of a microprocessor controlled telephone system, which casing is having two guide posts set at both lateral sides for positioning therebetween of a plurality of telephone number index cards, which index cards are having cuttings for quick finding. A plurality of memory keys are mounted on the mainframe in front of the casing to respectively control the mainframe memory which is having the data of the telephone numbers stored therein. A cover which is pivoted to the casing and controlled by an expansion spring to be in a normal open position is having a raid made at the front inner side for sliding therealong of a snapper, and a plurality of locating holes for alternatively positioning of the snapper. A stop plate is pivoted to the casing at the inner front position and pressed by a torsional spring to be in a position constantly retained with the cover. A snapper slidably which is mounted on the front edge of the cover is having a press key, through which the cover is operated to show the selected index card, and the matrix in the mainframe memory of the telephone system is turned on. Upon pressing on the associated number key of the telephone system, the telephone system will automatically execute the dialing process.
REFERENCES:
patent: 4164630 (1979-08-01), Brodbeck
patent: 4243845 (1981-01-01), Feinberg et al.
patent: 4277651 (1981-07-01), Fisher, II et al.
patent: 4278845 (1981-07-01), Chiou
patent: 4408101 (1983-10-01), Brodbeck
patent: 4409440 (1983-10-01), Brodbeck
patent: 4595798 (1986-06-01), Brodbeck
patent: 4800584 (1989-01-01), Kitanishi
Augustus Jhancy
Ng Jin F.
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