Safety lamp plug

Details Safety lamp plug Safety lamp plug

1980-05-22

1982-09-21

Kunin, Stephen G.

Geometrical instruments

337262, 337266, 339147P, H01H 8532, H01H 8524, H01R 300

Patent

active

043504078

ABSTRACT:
A fused plug constituting a safety lamp plug is provided for use with a light string set. A molded plastic body of the plug is formed of joined halves which define a first pair of compartments. Electrodes within such compartments define prongs extending from the body and blades within the body for receiving prongs of an add-on plug. Provided also within the molded body are a pair of compartments, each containing a safety lamp. Each safety lamp is a fuse lamp having a filament normally providing illumination but constituting a fusible element which melts upon current overload. The prong-defining electrodes are each interconnected with one lead of respective fuse lamp. The other lead of each fuse is interconnected with conductors for providing electrical power to the light string set. The fuse lamps are readily removable and illumination from them can be seen from outside the plug for determining their proper operation.

REFERENCES:
patent: 1990176 (1935-02-01), Fried
patent: 2030016 (1936-02-01), McIntosh
patent: 2649522 (1953-08-01), Marcus
patent: 2668885 (1954-02-01), Geruat
patent: 2808485 (1957-10-01), Cardone
patent: 3184569 (1965-05-01), McLaren
patent: 3833875 (1974-09-01), Holoka
patent: 3953099 (1976-04-01), Wilson
patent: 3976967 (1976-08-01), Magherini
patent: 4030059 (1977-06-01), Tong
patent: 4080039 (1978-03-01), Ahroni

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