Screen projection apparatus
AssigneeVutec Corporation
InventorCharles Realmuto
Life of this patent
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Abstract
A screen projection apparatus includes a housing within which a pair of projection screens are stored in a rolled position on motor driven rollers. A pair of access doors are mounted on the housing and support an idler roller over which a screen passes. The access doors open, one at a time, and the idler roller ensures that each of the screens when unrolled hangs in a common plane thereby eliminating the need to refocus the optical projection equipment which is used with the apparatus.
Claims10
A screen projection apparatus, comprising:
- a housing;
- a pair of roller means rotatably mounted in said housing and spaced apart;
- first and second projection screens with one of said projection screens rolled on one of said roller means;
- driving means connected to each of said roller means for unrolling said screens, one at a time, from said roller means and rerolling said projection screens onto said roller means;
- and
- idler roller means mounted on said housing with said projection screens passing over said idler roller means and with said idler roller means establishing a common plane in which each of said projection screens hang when said projection screens are unrolled.
A screen projection apparatus in which said access doors include limit means disposed to limit the downward swing of said access doors.
Dependencies are inferred from the claim text.