Double-based low-pressure discharge lamp with misalignment-toler

Details Double-based low-pressure discharge lamp with misalignment-toler Double-based low-pressure discharge lamp with misalignment-toler

1994-04-18

1996-02-13

O'Shea, Sandra L.

Electric lamp and discharge devices

With envelope

Having base and connector

313493, 313623, 31331812, H01J 548, H01J 162, H01J 1718

Patent

active

054913748

ABSTRACT:
To ensure contact of axially bent-back current supply leads, extending over plate-like base terminals of an elongated fluorescent lamp, and ensure electrical connection between the bent-over or bent-back portions with socket terminal springs (9a, 9b), in spite of misalignment of the bases (3) at two opposite ends of the fluorescent lamp, the junctions or corners (1118) between the narrow wall portions (18a, 18b) and wide side wall portions (11a, 11b; 12a, 12b; 13a, 13b) of the end portion (4) of the base are set back from the position in a theoretical geometric rectangle or parallelogram to form relieved wide side wall portions. The relieved side wall portions extend axially over essentially the entire length of the end portion (4) of the base. The arrangement permits alignment tolerances, that is, limited relatively canted or twisted positioning of the bases, and insertion into aligned sockets, while ensuring reliable electrical connection between the lamp terminals and the socket connection elements (6a, 6b).

REFERENCES:
patent: 4752710 (1988-09-01), Devir et al.
patent: 4906891 (1990-03-01), Takagi et al.
patent: 5006757 (1991-04-01), Odagaki
patent: 5142191 (1992-08-01), Blaisdell et al.
patent: 5276379 (1994-01-01), Haraden
Patent Abstracts of Japan, vol. 016, No. 064 (E-1167), 18 Feb., 1992 and A-03 261030 (Toshiba Lighting & Technol Corp.; others 01) 20 Nov., 1991.

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