Device and method of forming a unitary electrically shielded panel
AssigneeLucent Technologies Inc.
InventorsJohn A. Dispenza, Dipak Thakar
Life of this patent
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Abstract
A device and method of unitarily forming an electrically shielded panel for use in electromagnetically sealing an opening defined in an electronic enclosure. The unitary electrically shielded panel is formed of an electrically non-conductive rigid thermoplastic panel part and a substantially planar, electrically conductive elastomeric gasket bonded together to form the unitary panel in a single tool during a single injection-molding operation.
Claims26
A unitary electrically shielded panel installable in an electronic equipment enclosure for electrically sealing an aperture defined in the enclosure against passage of electromagnetic radiation, said electrically shielded panel comprising:
- an electrically non-conductive rigid panel part having a periphery;
- and
- a substantially planar electrically conductive shield formed unitarily with said panel part and substantially coextensive with said panel part so that said shield overlaps and extends beyond said periphery of said panel part so that said electrically shielded panel operatively reduces passage of electromagnetic energy through the enclosure aperture when said electrically shielded panel is sealingly placed over the enclosure aperture.
A method of forming during a single forming operation an electrically shielded panel unitarily formed of an electrically non-conductive rigid part and a substantially planar and coextensive electrically conductive shield, said method comprising the steps of:
- (a) introducing an electrically non-conductive thermoplastic in a flowable state into a first part of a cavity defined in a tool, the tool cavity having a second part having an articulatable core sized and shaped to fit within the second part of the tool cavity and initially disposed therein;
- (b) permitting the electrically non-conductive flowable-state thermoplastic to at least partly solidify within the first part of the tool cavity;
- (c) following said step (b), articulating the core so as to remove the core from the second part of the tool cavity;
- and
- (d) following said step (c), introducing into the second part of the tool cavity an electrically conductive elastomer that bonds with the electrically non-conductive thermoplastic in the first part of the cavity to form a unitary electrically shielded panel having an electrically non-conductive rigid part and a substantially planar and coextensive electrically conductive shield.
A unitary electrically shielded panel installable in an electronic equipment enclosure for electrically sealing an aperture defined in the enclosure against passage of electromagnetic radiation, said electrically shielded panel comprising:
- an electrically non-conductive rigid panel part formed by introducing an electrically non-conductive thermoplastic in a flowable state into a first part of a cavity defined in a tool, the cavity having a second part having an articulatable core initially disposed therein;
- and
- a substantially planar electrically conductive shield formed unitarily with said panel part and substantially coextensive with said panel part and formed by articulating the core from the second part of the tool cavity so as to remove the core from the second part of the tool cavity after said forming of said rigid panel part and thereafter introducing into the second part of the tool cavity an electrically conductive elastomer that chemically bonds together with said panel part in the first part of the tool cavity so that said shield overlaps said panel part to thereby form said electrically shielded panel for operatively reducing passage of electromagnetic energy through an aperture of an enclosure when said electrically shielded panel is sealingly placed over the enclosure aperture.
Dependencies are inferred from the claim text.