# US 5,700,342 A · Composite enclosure for electronic hardware > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,700,342 A - Document ID: US5700342A - Status: Granted - Kind: A - Application number: 08/469,944 - Filed: 1995-06-06 - Granted: 1997-12-23 - Earliest claimed: 1993-06-30 - Assignees: Simmonds Precision Products, Inc. - Inventors: William Bernard Giannetti - Web page: https://patentgrep.com/patent/US5700342A ## CPC - H05K 9/009: {comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked} - H05K 7/1418: {Card guides, e.g. grooves (H05K7/1425 takes precedence)} - H05K 7/1425: {of standardised dimensions, e.g. 19"-subrack} - H05K 7/20545: {Natural convection of gaseous coolant; Heat transfer by conduction from electronic boards} - H05K 9/0062: {Structures of standardised dimensions, e.g. 19" rack, chassis for servers or telecommunications} - Y10T 156/1075: of plural laminae from single stock and assembling to each other or to additional lamina - Y10T 156/1082: Partial cutting bonded sandwich [e.g., grooving or incising] - Y10T 428/1341: Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit - Y10T 428/1352: Polymer or resin containing [i.e., natural or synthetic] - Y10T 428/1362: Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.] - Y10T 428/1369: Fiber or fibers wound around each other or into a self-sustaining shape [e.g., yarn, braid, fibers shaped around a core, etc.] - Y10T 428/2457: Parallel ribs and/or grooves - Y10T 428/24636: Embodying mechanically interengaged strand[s], strand-portion[s] or strand-like strip[s] [e.g., weave, knit, etc.] - Y10T 428/2909: Nonlinear [e.g., crimped, coiled, etc.] - Y10T 428/30: Self-sustaining carbon mass or layer with impregnant or other layer - Y10T 442/20: Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An enclosure for electronic modules, comprising walls made of composite material including conductive fibers for shielding the enclosure interior from electromagnetic radiation, and means for securely mounting at least one module inside the enclosure with a fastener means, the mounting means comprising composite material. ## Claims ### Claim 1 A method for making a unibody enclosure for electronic modules comprising the steps of: a. laying up uncured carbon and resin layers in a mold; b. laying up additional uncured carbon and resin layers in the mold; c. performing a single step cure by applying heat and pressure to the materials in the mold to form said enclosure; d. laying up a plurality of carbon and resin laminates to form a first composite block and then curing said first composite block; e. cutting said block into a plurality of segments, f. joining said segments together to form a second block; g. cutting said second block to form a plurality of guide ribs integral with a cold wall; and h. mounting the finished cold wall and ribs in said enclosure. ### Claim 2 (depends on 1) The method of claim 1 wherein the step of joining said segments to form a second block includes the step of aligning said segments in a predetermined orientation to produce a preferred direction of heat transfer. ### Claim 3 A method for making a unibody enclosure for electronic modules comprising the steps of: a. laying up a woven uncured carbon layer of conductive fibers and in a mold; b. applying an uncured resin layer over the first layer in the mold; c. laying up additional uncured carbon and resin layers in the mold; d. laying up an uncured glass and resin core in the mold; e. laying up additional uncured carbon and resin layers in the mold; f. performing a single step cure by applying heat and pressure to the materials in the mold to form said enclosure; and g. laying up a plurality of carbon and resin laminates to form a first composite block: then applying heat and pressure to cure the composite block: h. cutting said block into a plurality of segments, i. aligning said segments in a predetermined orientation to produce a preferred direction of heat transfer; j. joining said segments together to form a second block; k. cutting said second block to form a plurality of guide ribs integral with a cold wall; said ribs and cold wall having a preferred direction of heat transfer; l. bonding cooling fins to said cold wall; and m. mounting the finished cold wall and ribs in said enclosure. ### Claim 4 (depends on 3) The method of claim 3 wherein said glass and resin core comprises a glass bead epoxy syntactic. ### Claim 5 (depends on 3) The method of claim 3 wherein said core is formed using materials that provides an impedance mismatch with the carbon and resin layers for electromagnetic shielding. ### Claim 6 (depends on 3) The method of claim 3 wherein the step of laying up a plurality of carbon resin laminates to form a first composite block includes the step of forming said laminates with woven mesophase pitch based carbon fibers that are heat treated before the resin is applied to improve thermal conductivity of the fibers. ### Claim 7 (depends on 6) The method of claim 6 wherein said fibers used in said first composite block are woven in a cross-ply manner. ### Claim 8 (depends on 7) The method of claim 7 wherein said cross-ply weave includes an unbalanced orientation as to fibers oriented in one direction compared to fibers oriented in another direction preferred for heat transfer.