Phantom fluorescent lamp with safety switch

Details Phantom fluorescent lamp with safety switch Phantom fluorescent lamp with safety switch

1977-02-28

1980-07-08

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Plural load device systems

315 97, 315 74, 315122, 315179, 315189, 315250, 315324, 328 7, H05B 4116

Patent

active

042119588

ABSTRACT:
A safe "phantom" lamp structure for replacing a fluorescent lamp in a two-lamp series circuit connected fluorescent fixture which permits the remaining lamp of the two-lamp fixture to operate. The structure includes, in different embodiments, one or more magnetically or thermally actuated switches which must be closed for completion of the phantom lamp circuit and the switches are closed only after connection of both ends of the phantom lamp to the appropriate fixture sockets.

REFERENCES:
patent: 3204059 (1965-08-01), Saaty
patent: 3435286 (1969-03-01), Kayatt
patent: 3829803 (1974-08-01), Maeda
patent: 3956665 (1976-05-01), Westphal
patent: 4097779 (1978-06-01), Latassa
J. E. Shepard, "Mechanically Actuated Electric Switch," IBM Technical Disclosure Bulletin, vol. 14, No. 9, Feb., 1972.

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