Abstract:
Beschrieben wird ein Verfahren, bei dem Oberflächen von geschäumten Kunststoffen unter Zuhilfenahme von selektiv abtragenden Bearbeitungsverfahren mit elektrischen Leiterbahnen versehen werden. Das Verfahren gestattet die kostengünstige Herstellung von Formteilen aus Kunststoff mit auf der Oberfläche integrierten Leiterbahnen. Die Verfahrensprodukte lassen sich beispielsweise in der Elektro- und Elektronikindustrie einsetzen.
Abstract:
Power and ground planes (203, 205) that are used in Printed Circuit Boards (PCBs) and that comprise porous, conductive materials are disclosed. Using porous power and ground plane materials in PCBs allows liquids (e.g., water and/or other solvents) to pass through the power and ground planes (202, 205), thus decreasing failures in PCBs (or PCBs used as laminate chip carriers) caused by cathodic/anodic filament growth and delamination of insulators. Porous conductive materials suitable for use in PCBs may be formed by using metal-coated organic cloths (such as polyester or liquid crystal polymers) or fabrics (such as those made from carbon/graphite or glass fibers), using metal wire mesh instead of metal sheets, using sintered metal, or making metal sheets (202, 205) porous by forming an array of holes (220) in the metal sheets. Fabrics and mesh may be woven or random. If an array of holes (220) is formed in a metal sheet, such an array may be formed with no additional processing steps than are performed using conventional PCB assembly methods.
Abstract:
An electrical interconnect (10) is comprised of a woven mesh in which an array of parallel wires (20) is retained in spaced relation by a transverse array of nonconducting strands (30), the mesh being enclosed or encased within a resilient matrix. The conductive wires are on a close pitch to yield greater current carrying capacity and achieve a lower more stable resistance. With this construction a great number of wires are in contact with each contact pad to yield greater current carrying capacity and corresponding lower resistance. The closer pitch wires also provide greater redundancy of contact points. This structure can be custom configured in as many layers or in a variety of shapes as is desirable to achieve a given electrical performance. The woven mesh can be wrapped around a shaped substrate to provide electrical connections in a desired shape. The woven mesh interconnect can be integrated as part of a boot, wherein the boot receives an electrical device therein and the woven mesh interconnect provides electrical connection from the device within the boot to outside the boot. The woven mesh interconnect can be layered and shaped to form an interconnect which not only provides electrical interconnection but also provides a biasing force due to the shape of the device.
Abstract:
A laminated composite material (10) having patterned conductors integral to its structure is described which comprises a plurality of cloth layers and a penetrating resin matrix material in which at least one of the cloth layers (4) has a deposited patterned layer of electrical conductor to form a conducting path (14) in the resultant composite material. The electrical conductor is preferably deposited to such a thickness that individual fibres of the cloth are coated but that the resin permeates between individual fibres in the conducting regions. The conducting regions provide for external electrical connection of embedded electronic devices (2).
Abstract:
Es ist ein hydraulisches Betriebssystem für Spritzgießmaschinen mit einer Hydraulikpumpe 14 und einer Mehrzahl von Hydraulikantrieben 1 bis 6 vorgeschlagen, die hiermit über ein Hydraulik-Leitungsnetz 13 und Ventile 7 bis 12 in wählbarer Anzahl und Reihenfolge verbindbar sind. Für das Arbeiten mit gutem Wirkungsgrad und geringen Betriebskosten ist vorgeschlagen,
- daß die Hydraulikpumpe 14 als Stetig- bzw. Konstant-Förderpumpe mit einem mindestens der maximalen Verbrauchsmenge aller Hydraulikantriebe 1 bis 6 entsprechenden Förder-(strom)-Volumen und/oder -druck ausgelegt ist, - daß die Hydraulikpumpe 14 durch einen über einen vorgegebenen Drehzahlbereich in seiner Drehzahl stufenlos - oder aber zumindest vielstufig - regelbaren Elektromotor 15 antreibbar ist, - daß durch die maximale Antriebsdrehzahl des Elektromotors 15 das Förder(strom)-Volumen und/oder der Förderdruck an die maximale Verbrauchsmenge und/oder den maximalen Verbrauchsdruck aller Hydraulikantriebe 1 bis 6 anpaßbar ist, - und daß die Drehzahl für den Elektromotor 15 proportional der Verbrauchsmenge und/oder dem Verbrauchsdruck der jeweils in Betrieb gesetzten Hydraulikantriebe 1 bis 6 regelbar ist.
Abstract:
Zur Herstellung eines elektrischen Kontakts an einem elektrisch leitfähigen Formkörper aus thermoplastischem Material, der Metallfasern enthält, wird auf die Oberfläche des Formkörpers eine Suspension aufgetragen, die ein elektrisch leitfähiges Pulver sowie ein Lösungsmittel enthält, das das thermoplastische Material des Formkörpers anlöst oder aufquillt. Dann läßt man die aufgetragene Suspension eintrocknen.
Abstract:
An interlevel connector, a multilayer wiring board assembly, and method for making the same are presented. The interlevel connector includes a dielectric substrate having a plurality of through holes and a corresponding plurality of pultrusions. Each pultrusion includes a plurality of electrically conductive fibers and an electrically conductive or insulating host material carrying the plurality of fibers, each of the plurality of pultrusions being located in a respective through hole and having fibrillated portions extending from surfaces of the dielectric substrate. The interlevel connector is used in the construction of a multilayer wiring assembly in which first and second wiring boards having respective conductive portions are interconnected. The interlevel connector is located adjacent and between the first and second wiring boards, whereby the fibrillated portions of the pultrusion extending from the surfaces of the dielectric substrate contact the conductive portions of the first and second wiring boards. The wiring boards can be permanently or removably locatable adjacent the dielectric substrate.
Abstract:
Adhesive resins are filled with carbon fibers that have a three-dimensional structure. The fibers have variable lengths and widths. The fiber filled adhesive exhibits high thermal conductivity values. Electronic systems having components bonded by a layer of these adhesive resins have high through-the-thickness thermal conductivity.
Abstract:
Electronic assemblies are fabricated by stacking alternate connecting layers and component layers. The component layers may be virtually any rigid structure having contact regions formed on at least one face thereof. The connecting layers are formed from anisotropic elastomeric conductors which in turn are fabricated by stacking a plurality of conductive sheets and insulating sheets, where the conductive sheets have a plurality of parallel electrically conductive elements formed therein. By introducing a curable elastomeric resin into the stacked structure so formed, and then curing the elastomer, a solid elastomeric block having a plurality of parallel electrically conductive elements running its length is obtained. Individual elastomeric conductors suitable as connecting layers interfacing between adjacent component layers are obtained by slicing the block in a direction perpendicular to the conductors.