Abstract: A housing and ejection mechanism for PCMCIA electronic "smart cards" is disclosed. The ejection mechanism comprises a pair of cooperating lever arms and springs. When a "smart card" is inserted into the housing, the two lever arms pivot into the housing, extending an ejection spring. As the spring is pulled back by means of the lever arms, insertion of the card requires only slightly more force than would be needed to connect a "smart card" with its socket were no spring present. Full insertion of the card leaves the two lever arms coupled, but with only one of the lever arms locked in position. When the user triggers the ejection process, the two levers are mechanically separated and one of them applies the full spring force to the "smart card", freeing it from its socket and starting to push it out of the housing. After the first arm frees the "smart card" from its socket, it frees the second lever arm from its latch. The two lever arms then cooperate to push the "smart card" further out of the housing.

Abstract: A butt hinge has a pair of tapered leaves connected together by a removable pivot pin, an outer leaf having tubular portions at each end thereof for reception of the pivot pin, and having a central cut out area for reception of an inner leaf having an inner tubular portion for the pivot pin. Locating ribs are provided on opposite sides of the tubular portions, and together with central locating notches they facilitate the location and installation of the hinge on a door and jamb. The tapered over-lapping of the leaves avoids the need to provide rebates to receive the hinge, or the need to trim or bevel the edge of the door to prevent binding when the door is closed.

Abstract: Disclosed is a fully integrated monolithic optical receiver and a method of manufacturing such a receiver, including the steps of providing a semi-insulating substrate having a major surface, growing an epitaxial layer of a first conductivity type over the major surface, selectively removing the epitaxial layer to establish a detector area defined by the remaining portion of the layer, selectively implanting a relatively heavily doped region of a first conductivity type in the epitaxial layer, selectively implanting a relatively heavily doped region of a second conductivity type in the epitaxial layer and spaced from the implanted region of the first conductivity type, selectively implanting a relatively heavily doped source region of the first conductivity type in the major surface of the substrate, selectively implanting a relatively heavily doped drain region of the first conductivity type in the major surface and spaced from the source region, selectively implanting a gate region of the first conductivity