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Clean room ceiling construction

  • US 5,033,247 A
  • Filed: 05/11/1990
  • Issued: 07/23/1991
  • Est. Priority Date: 03/15/1989
  • Status: Expired due to Fees
First Claim
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1. A ceiling panel for use in clean room suspension ceilings having peripherally horizontally flanged grid openings for receiving ceiling panels, comprising:

  • a ceiling panel member having opposite front and back horizontal surfaces and a generally vertical, continuous edge surface between said horizontal surfaces around the periphery of said member;

    an edge cap sealingly engaging said ceiling panel edge surface for inhibiting particle emission therefrom, said cap comprising an elongated rigid or semi-rigid strip of generally U-shaped cross-section having first and second horizontal portions respectively compressively engaging said back and front panel member surfaces adjacent said edge surface, and a vertical portion joining said horizontal portions and dimensionally corresponding to said panel member edge surface; and

    a longitudinal gasket secured to said second horizontal portion of said edge opposite said front panel member surface for sealing said edge cap against a horizontal peripheral flange of a suspension ceiling grid opening to inhibit particle transmission through the suspension ceiling, said gasket comprising a plurality of vertically elongated ridges.

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