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Projection installing device

  • US 5,938,161 A
  • Filed: 06/11/1997
  • Issued: 08/17/1999
  • Est. Priority Date: 06/14/1996
  • Status: Expired due to Term
First Claim
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1. A projector installing device comprising:

  • a supporting member having a box shape with its lower side open, said supporting member being adapted to be fastened to a ceiling; and

    a rotary member also having a box shape with its lower side open said rotary member box shape being larger than said box shape of said supporting member, said rotary member being mounted on said supporting member while covering said supporting member and being rotatable around a vertical axis and further being adapted for fastening a projector,wherein the rotary member is provided with fixing screws for unfixably fixing said rotary member at a desired rotary position relative to the supporting member from its horizontal direction.

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