Radio frequency shielding enclosure

Claim 1

A RADIO FREQUENCY SHIELDING ENCLOSURE ADAPTED FOR SHIELDING ELECTRONIC EQUIPMENT HOUSED THEREIN, SAID ENCLOSURE INCLUDING: A MAIN BODY PORTION MADE OF A MATERIAL CAPABLE OF RADIO FREQUENCY SHIELDING FORMED BY A PLURALITY OF SIDE WALLS, SAID BODY PORTION BEING OPEN AT ONE END, SAID SIDE WALLS TERMINATING IN AN ANNULAR INDENTED PORTION ADJACENT SAID OPEN END, SAID INDENTED PORTION BEING FORMED BY A FIRST FLANGE EXTENDING INWARDLY TOWARD THE CENTRAL AXIS OF SAID MAIN BODY AND A TERMINAL WALL PORTION EXTENDING NORMALLY FROM THE INNER EDGE OF SAID FIRST FLANGE WHEREBY THE EXPOSED RIM PORTION OF SAID TERMINAL WALL PORTION DEFINES AN ACCESS OPENING OF SMALLER AREA THAN THE AREA DEFINED BY THE SIDE WALLS OF THE MAIN BODY PORTION; A CLOSURE MEMBER MADE OF A MATERIAL CAPABLE OF RADIO FREQUENCY SHIELDING DISPOSED SO AS TO CLOSE SAID ACCESS OPENING; A RADIO FREQUENCY SHIELD DEVICE SECURED ABOUT THE PERIMETER OF SAID CLOSURE MEMBER ON THE SIDE THEREOF FACING SAID ACCESS OPENING, SAID DEVICE COMPRISING A PLURALITY OF ELEONGATED, U-SHAPED CHANNEL SECTIONS JOINED TOGETHER IN END-TO-END RELATIONSHIP, EACH SAID SECTION INCLUDING AN ELONGATED GENERALLY RECTANGULAR BASE AND A PAIR OF LEGS EXTENDING IN NORMAL RELATIONSHIP FROM THE LONGITUDINAL EDGE THEREOF, ONE OF SAID LEGS HAVING THE TERMINAL END THEREOF ADAPTED FOR ABUTTING ENGAGEMENT WITH SAID FIRST FLANGE, A PROTRUDING RIDGE EXTENDING FROM THE INTERIOR OF SAID BASE THROUGHOUT THE LENGTH THEREOF, SAID RIDGE BEING DISPOSED ADJACENT SAID ONE LEG, AND A PLURALITY OF THIN, RECTANGULAR STRIPS JOINED TOGETHER IN END-TO-END RELATIONSHIP, EACH SAID STRIP BEING FORMED OF ELECTRICALLY CONDUCTIVE SPRING MATERIAL DISPOSED IN SPACED, PARALLEL RELATION WITH THE INTERIOR SURFACE OF EACH SAID BASE, EACH SAID STRIP HAVING A FIRST LONGITUDINAL EDGE SEURCED TO THE OTHER OF SAID LEGS AND A SECOND LONGITUDINAL, FREE EDGE EXTENDING IN OVERLAPPING RELATION WITH SAID RIDGE, EACH SAID STRIP RESTING FOR SUPPORT ON SAID RIDGE ALONG A PORTION THEREOF INTERMEDIATE SAID FIRST AND SECOND EDGES AND ADJACENT SAID FREE EDGE; WHEREBY, UPON MOVEMENT OF SAID CLOSURE MEMBER TO A CLOSED POSITION WHEREIN SAID STRIPS ARE ENGAGED BY SAID EXPOSED RIM PORTION ALONG A PORTION THEREOF INTERMEDIATE SAID FIRST EDGE AND SAID RIDGE, SAID STRIPS WILL BE FLEXED IN A DIRECTION TOWARD SAID CHANNEL BASE, THE DEGREE OF FLEXING BEING LIMITED BY ENGAGEMENT OF SAID ONE LEG AND SAID FIRST FLANGE.