Electric lamp and discharge devices – With envelope – Having base and connector
Patent
1983-09-28
1985-08-20
Lindsay, Robert
Electric lamp and discharge devices
With envelope
Having base and connector
313315, 339144R, A47B 8800
Patent
active
045366764
ABSTRACT:
An incandescent lamp assembly has a generally elliptical vitreous envelope including a cylindrical neck, stem mount with a pair of lead-in wires, and a screw-in base capped on the cylindrical portion of the envelope. The cylindrical neck of the envelope has a circular protruded ring along the entire periphery thereof and in the corresponding position of the screw-in base is provided a concave channel, for a push-in coupling. A flared rim is integrally formed with the concave channel and extends gradually outwardly to bear along the envelope, giving elastic deformation to the upper half of the screw-in base. The lead-in wire is interposed between the cylindrical neck and the screw-in base and fixedly positioned at the circular protruded ring. For prevention of relative rotational movement, heat resistant silicone rubber is applied on the circular protruded ring.
REFERENCES:
patent: 2088544 (1937-07-01), Braselton
patent: 2200954 (1940-05-01), Glassberg
patent: 3237622 (1943-08-01), Craig
patent: 3551725 (1970-12-01), Brundige
patent: 4039886 (1977-08-01), Scherzer
Eguchi Yoshinori
Fukayama Sumio
Maruyama Jisaburou
Miyake Masanobu
Watanabe Yoshimi
Lindsay Robert
Tokyo Shibaura Denki Kabushiki Kaisha
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