Lampholder

Electrical connectors – With contact preventer or retractable cover part – Movably mounted

Patent

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Details

439140, 439360, 439667, H01R 1344

Patent

active

047689668

ABSTRACT:
A lampholder for a screw-in lightbulb has a body supporting two cable terminals for connection to an electrical supply, and a contact carrier mounted on the body and defining a bulb receiving socket, the contact carrier being movable between first and second positions relative to the body in a direction parallel to the insertion direction of a bulb and supporting terminals which connect an inserted bulb to the cable terminals when the carrier is in the first position but are spaced from the cable terminals when the carrier is in the second position. A spring pushes the carrier to the second position. When a bulb is screwed part-way into the carrier socket it bears against a fixed abutment so that the carrier is moved from the second to the first positions as the bulb is screwed fully into the socket. Each cable terminal overlaps with a respective carrier terminal in the axial direction and an insulating support is provided which is fixed in position relative to one terminal of each cable/contact terminal pair. The insulating support is such that as the carrier moves from the first to the second positions the terminal which moves is moved onto the partition and out of contact with the other terminal.

REFERENCES:
patent: 3915536 (1975-10-01), Glantz
patent: 4283102 (1981-08-01), Richier

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