Lamp vessel for multiple lamp types

Details Lamp vessel for multiple lamp types Lamp vessel for multiple lamp types

1987-03-05

1989-02-07

Moore, David K.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313114, 362302, H01K 128, H01K 132

Patent

active

048033944

ABSTRACT:
The electric incandescent lamp has a blown glass lamp vessel having a neck-shaped wall portion, a parabolically curved wall portion which extends substantially transversely and a wall portion curved in accordance with an arc of a circle which extends substantially in the axial direction. A filament is arranged in a plane through the foci of the wall portion and at least partly coincides therewith. The electric incandescent lamp has the advantage that, independent of its finish it has a lamp vessel of the same shape and the same mounting means for the filament. The manufacture of incandescent lamps of different types is thereby simplified considerably.

REFERENCES:
patent: 1804049 (1931-05-01), Claus
patent: 2110590 (1938-03-01), Cook
patent: 2115839 (1938-05-01), Briefer
patent: 2170675 (1939-08-01), Ayral
patent: 2901655 (1959-08-01), Linsday et al.
patent: 4041344 (1977-08-01), Lagiusa
patent: 4633126 (1986-12-01), Giller et al.
patent: 4656386 (1987-04-01), Bloom et al.
patent: 4672514 (1987-06-01), Giller

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