Incandescent lamp having two lead-in conductors sealed within on

Details Incandescent lamp having two lead-in conductors sealed within on Incandescent lamp having two lead-in conductors sealed within on

1985-01-16

1986-11-18

Chatmon, Saxfield

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For filament

313285, 313271, H01J 190, H01J 1944, H01K 118

Patent

active

046238174

ABSTRACT:
A tungsten-halogen lamp including a tubular quartz envelope wherein both of the lead-in conductors designed for providing electrical energy to the lamp's coiled filament are strategically positioned within a single, press-sealed end portion of the lamp's envelope. Electrical connections to the lamp may thus be provided at only one end thereof to thereby facilitate positioning and connection of the lamp within a photocopier or similar machine. The lamp is suited for high wattage applications (i.e., about two-hundred watts per linear inch of filament or greater) by positioning the inner portion of one of the lead-in conductors externally of the coiled filament supports and thus at spacing sufficient to prevent excessive heating of the inner portion and surrounding, tubular insulative member.

REFERENCES:
patent: 3760217 (1973-09-01), Martin et al.
patent: 4384235 (1983-05-01), Bollon et al.
patent: 4442374 (1984-04-01), Morris et al.

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