Browse Prior Art Database

Lamp Connector

IP.com Disclosure Number: IPCOM000043805D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Gunnell, RW: AUTHOR [+2]

Abstract

This article describes a connector for automatically disconnecting an elongated lamp upon lamp breakage. Fig. 1 shows a lamp connector with an insulative housing 1 and an electrical lead 2 terminating in a lamp contact 3. Contact 3 is supported by compression spring 4. An additional compression spring 5 is attached to insulative ring 6 and is the element used to "pop-out" and thereby disconnect lamp 7 if it is broken. Note that the travel of spring element 5 is much larger than the travel of element 4. Fig. 2 shows the lamp and connector after the lamp has been installed. The lamp end first makes contact with the insulative ring 6, after which spring device 5 is compressed until electrical contact is made at contacts 3 and 8, thereby connecting lamp filament 9.

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Lamp Connector

This article describes a connector for automatically disconnecting an elongated lamp upon lamp breakage. Fig. 1 shows a lamp connector with an insulative housing 1 and an electrical lead 2 terminating in a lamp contact 3. Contact 3 is supported by compression spring 4. An additional compression spring 5 is attached to insulative ring 6 and is the element used to "pop-out" and thereby disconnect lamp 7 if it is broken. Note that the travel of spring element 5 is much larger than the travel of element 4. Fig. 2 shows the lamp and connector after the lamp has been installed. The lamp end first makes contact with the insulative ring 6, after which spring device 5 is compressed until electrical contact is made at contacts 3 and 8, thereby connecting lamp filament 9. After electrical contact has been made, the lamp must travel an additional small amount so that the contact spring device 4 will insure a good electrical contact. It should be noted that only the rigidity of the lamp housing 7 keeps spring devices 4 and 5 in compression. This means that as long as the lamp housing remains intact, both ends of the lamp are electrically connected to the lamp power supply (not shown) through the connector wires. If at any time the lamp housing should break, the spring devices 4 and 5 will push the lamp contact 8 out of the connector, and because spring 5 has more travel than spring 4, the connector will insure that the electrical contact will be broken. Figs. 3...