Static structures (e.g. – buildings) – Combined
Patent
1974-11-29
1977-08-30
Perham, Alfred C.
Static structures (e.g., buildings)
Combined
49485, 49489, 52400, 277178, 361383, H05K 720, E04B 162
Patent
active
040445151
ABSTRACT:
An avionic tray is disclosed for supporting electronic instruments on a shelf. The tray includes an aperture formed thereon for providing the supporting instrument with communication to an air plenum chamber. An interchangeable metering plate is adapted to extend over the aperture, with the plate having a predetermined number of metering ports formed thereon in any desired arrangement. The metering plate is interconnected to the aperture by means of a removable annular gasket, which in turn sealingly engages a surface of the electronic instrument. The gasket includes a pair of annular grooves for receiving the peripheral edges of the metering plate and the tray aperture. The gasket is constructed in such a manner that any application of a downward or lateral force on the gasket by the supported instrument causes the metering plate to be forced against the rim of the aperture to tightly hold the portion of the gasket between the two elements and prevent the gasket from becoming disengaged.
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Hollingsead Robert A.
Pryor Clyde Robert
Hollingsead-Pryor Enterprises, Inc.
Perham Alfred C.
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