Lamp and lens retrofit assembly for overhead projector
AssigneeGTE Sylvania Incorporated
InventorsRoger T. Hebert, John A. Pappas, Richard J. Shea
Life of this patent
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Abstract
A retrofit assembly for replacing a lens-containing lamp in an overhead projector. The assembly comprises a quartz-halogen lamp, having an internal reflector and an enlarged base removably mounted in the projector, and a lens holding bracket removably mounted in the projector in alignment with the lamp. The bracket is resiliently pivoted toward the lamp and has a tab for striking the lamp base to retain the lens at a predetermined distance from the lamp.
Claims7
A retrofit assembly in combination with an overhead projector having a light source support means with a lamp socket mounted thereon, said retrofit assembly comprising:
- a lamp having a base removably mounted in said socket on said support means;
- a lens holding bracket means removably mounted on said support means and positioned with the lens thereof in close proximity to and in alignment with said lamp;
- resilient pivoting means for said lens holding bracket means whereby the lens thereof may be swung away from said lamp to facilitate removal or replacement of the lamp, said bracket means normally being urged toward said lamp by said resilient pivoting means;
- and
- a first tab extending from said lens holding bracket means for striking the base of said lamp when said resiliently urged bracket means is in its normal position, thereby retaining said lens at a predetermined distance from said lamp.
Dependencies are inferred from the claim text.