Electric lamp and method of manufacturing same

Details Electric lamp and method of manufacturing same Electric lamp and method of manufacturing same

1988-10-11

1989-12-19

Griffin, Robert L.

Electric lamp and discharge devices

With envelope

Having base and connector

439375, H01J 548

Patent

active

048885193

ABSTRACT:
The electric lamp has a lamp vessel (1) having an end portion (3) which is fixed inthe lamp cap (5) by means of polyethersulphone (8) as a thermoplastic synthetic resin, which has adhered both to the lamp vessel and to the lamp cap. The end portion (3) has non-circular cross-sections where it is in contact with the synthetic resin (8) due to projections (10) projecting into the synthetic resin (8). A current supply wire (11) can be clamped between the synthetic resin (8) and the sheath portion (6) of the lamp cap (5) in order to establish electrical contact therewith. The lamp can be assembled by arranging in the hot state of the end portion (3) a polyethersulphone ring (8) around this end portion (3) and by providing the lamp cap (5) in the hot state around the polyethersulphone ring (8). FIG. 1.

REFERENCES:
patent: 3622947 (1971-11-01), Griffin
patent: 3631379 (1971-12-01), Wright
patent: 4521485 (1985-06-01), Tondre et al.

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