Projection lighting assembly and lamp unit for use therein

Details Projection lighting assembly and lamp unit for use therein Projection lighting assembly and lamp unit for use therein

1976-12-22

1978-07-11

Nelson, Peter A.

Illumination

Self powered lamp

With support

362198, 362288, 362306, 362368, H04M 122

Patent

active

041005929

ABSTRACT:
A lamp unit for use within a socket which defines an opening having a pair of upstanding walls. The unit is especially adapted for use in projection applications, e.g. movie, slide, and microfilm projectors, and comprises a base which is positioned within the socket's opening, a reflector and electric lamp securedly positioned within the base in a coaxial relationship, and biasing means in the form of an elongated rib, two spaced protuberances, or a resilient spring, etc. located on one side of the base. Accordingly, the base is biased against one of the upstanding walls of the opening to provide an interference fit between base and socket and maintain consistent alignment of these components. A lighting assembly utilizing the above lamp unit is also disclosed.

REFERENCES:
patent: 2110134 (1938-03-01), Douglas
patent: 2117762 (1938-05-01), Douglas
patent: 3069539 (1962-12-01), Kidd
patent: 3176260 (1965-03-01), Pascucci
patent: 3639745 (1972-02-01), Shiki
patent: 4023893 (1977-05-01), Hebert et al.

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