Abstract:
Die Vorrichtung zum Trennen und Besäumen, insbes. von dünnen Leiterplatten, aber auch mehrlagigen Leiterplatten arbeitet mit zwei in einer Ebene einander gegenüberliegend angeordnete Kreissägeblätter (10a,10b), vorzugsweise mit Diamantschneiden, deren Sägezähne (21) jeweils in die Oberfläche der Leiterplatten (8) eintauchen und diese von beiden Seiten ankerben ohne sie vollständig durchzuschneiden. Der verbliebene "Reststeg" (22) wird möglichst dünn gewählt, jedoch ausreichend groß, damit die beiden Sägeblätter (10a,10b) so eingestellt werden können, daß ihre Zähne (21) Spitze gegen Spitze gestellt werden können ohne sich im Betrieb zu berühren. Das vollständige Durchtrennen der Leiterplatte (8) erfolgt in einem zweiten Bearbeitungsschritt mit einer dünnen Trennscheibe (16), die mit hoher Umfangsgeschwindigkeit umläuft und den Reststeg (22) durchtrennt.
Abstract:
A credit card type small thin rectangular IC card (10) includes a battery (14) and an IC comprising a CPU (15), a ROM (15ʺ) and a RAM (15ʹ) mounted on a flexible printed circuit (11) and bonded within an insulative plastic material (12). The printed circuit of the card includes a plurality of electrode terminals (13) exposed in a parallel array along at least one edge of the card which are adapted to engage electrodes of a mating contact. The printed circuit terminals are manufactured by coating copper, nickel and gold over polyamide resin and squeeze finishing the leading edge. The mating socket comprises a generally U-shaped frame having a U-shaped channel adapted to receive the IC card and having internal recessed contacts adapted to engage the terminals of the IC card. The contacts extend from an exterior surface of the frame for interconnection with the circuits of the mating device. Downwardly projecting portions thereof are bent at least twice in the portion penetrating the bottom of the frame.
Abstract:
@ A series of first parallel printed contacts extends inward from a beveled first end of a card. Conductors extend over the surface on ends of the contact and are electrically connected together and with large contact terminals at the ends of the parallel series of contacts. A second parallel series of contacts extends inward from the beveled first edge on the second side of the card, and conductors are looped around each other and individually terminate in a triangular array of connectors which extend through the card to make electrical contact with the first conductors on the first surface. Large end contact terminals are provided at ends of the second series of contact. Adhesive-backed covers cover the conductors and connectors and inner portions of the contacts and terminals. The first conductors and second conductors are so arranged that large sections of each conductor in one group of conductors do not overlie conductors on the opposite side of the card. Holes can be punched through the card in selected locations to selectively interrupt conductors on one side of the card without interrupting conductors on the opposite side of the card.
Abstract:
This invention relates to the field of lighting modules employing light emitting diodes (LEDs), and more particularly to LED modules suitable for exposed lens plate luminaires. There is herein provided an LED module having a printed circuit board comprising at least two layers, wherein the interface between two layers at a side surface of the printed circuit board is covered by a protrusion of an optically transmissive cover plate. The same said optically transmissive cover plate is also adapted to cover at least one LED positioned in or on the printed circuit board.