Seal for shielding enclosure
First Claim
1. In a shielding enclosure including wall panels forming a compartment and a door assembly having an exterior skin and being mounted about one of said wall panels which also includes an access opening to and from the compartment and through which opening it is sought to eliminate leakage of radio-frequency wavelengths by a seal across such opening while the enclosure is in a closed mode, the improvement comprisinga flexible interior door skin having an outer face included in the door assembly and a means including an electromagnetic circuit attached to said one of said wall panels about such access opening for engaging said outer face of said flexible interior door skin, thereby providing the seal between said engaging means and flexible interior door skin upon energization of the electromagnetic circuit,said engaging means comprisingan endless metal band and an electromagnetic coil mounted on said band.
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Accused Products
Abstract
A seal (35) for a shielding enclosure (20) having a hinged door assembly (27), comprising a non-punctured flexible interior door skin (39) having an outer face (53) mating with a pair of spaced metal bands (74, 75) secured to an edge 91 of a panel 24 which forms the enclosure (20). Columns (79) of magnetic material mount on the exterior faces of such bands (74, 75) and an insulated electromagnetic coil (76) is contained within a cavity formed by the bands'"'"' spacing. Energization of coil (76) seals together skin (53) and bands (74, 75). The coil'"'"'s wiring (84) passes through a sealing conduit (85) in panel (24) to a housing (87) for an electronic control unit inside enclosure (20) that filters out r-f waves traveling through conduit (85). Ingress and egress hand-actuated mechanisms (51, 52) do not interfere with the effected compressible seal, by reason of a special hinge leaf construction. Upon actuation of mechanisms (51, 52), the electromagnetic coil'"'"'s circuit deenergizes, and the swinging of door assembly (27) upon its hinges (58, 59) is free of magnetic forces.
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Citations
13 Claims
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1. In a shielding enclosure including wall panels forming a compartment and a door assembly having an exterior skin and being mounted about one of said wall panels which also includes an access opening to and from the compartment and through which opening it is sought to eliminate leakage of radio-frequency wavelengths by a seal across such opening while the enclosure is in a closed mode, the improvement comprising
a flexible interior door skin having an outer face included in the door assembly and a means including an electromagnetic circuit attached to said one of said wall panels about such access opening for engaging said outer face of said flexible interior door skin, thereby providing the seal between said engaging means and flexible interior door skin upon energization of the electromagnetic circuit, said engaging means comprising an endless metal band and an electromagnetic coil mounted on said band.
Specification