Telephonic communications – Private or single line system – Doorbell system
Patent
1985-12-18
1987-10-13
Rubinson, Gene Z.
Telephonic communications
Private or single line system
Doorbell system
379171, 379442, H04M 900
Patent
active
047003790
ABSTRACT:
Aircraft communications apparatus includes a permanent communications system, a temporary communications system and an interface coupler connecting the permanent and temporary communications systems. The coupler consists of a plurality of opto-isolator circuits each of which couples signals between one of the permanent communications and one of the temporary communications circuits thereby reducing the transmission of noise between the circuits. The coupler further includes a plurality of normally-closed bypass relays each connected in parallel with one of the opto-isolator circuits which are controlled by manually-operated switches to bypass the opto-isolator circuits in the event of a malfunction.
REFERENCES:
patent: 3213391 (1965-10-01), Kovalevski et al.
patent: 3385970 (1968-05-01), Coffin, Jr. et al.
patent: 3410961 (1968-11-01), Slana
patent: 3825896 (1974-07-01), Obenhaus
patent: 3888772 (1975-06-01), Neuner
patent: 3999015 (1976-12-01), Snyder et al.
patent: 4046959 (1977-09-01), Watanabe et al.
patent: 4055729 (1977-10-01), Vondling
patent: 4056719 (1977-11-01), Waaben
patent: 4178504 (1979-12-01), Farmer
patent: 4190747 (1980-02-01), Feiner et al.
patent: 4203006 (1980-05-01), Mascia
patent: 4225752 (1980-09-01), Looschen
patent: 4228323 (1980-10-01), Feiner et al.
patent: 4282604 (1981-08-01), Jefferson
patent: 4298839 (1981-11-01), Johnston
patent: 4310754 (1982-01-01), Check, Jr.
patent: 4313225 (1982-01-01), Carbrey et al.
patent: 4420841 (1983-12-01), Dudash
patent: 4485273 (1984-11-01), Bortelink
patent: 4503532 (1985-03-01), Page
patent: 4538031 (1985-08-01), Benning et al.
patent: 4578540 (1986-03-01), Borg et al.
patent: 4591663 (1986-05-01), Sullivan
IBM Technical Disclosure Bulletin, vol. 22, No. 4, "Bidirectional Optical Isolator" by Judd et al. (Sep. 1979).
Connors Matthew E.
Rubinson Gene Z.
The Boeing Company
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