Abstract: Disclosed is an electrical connector having an insulative housing and conductive connector wherein conductive connector has a distal end which is angled and generally rectangular in shape with the four corners of the rectangular shape of the distal end bent to receive a fusible material. The fusible material will generally be a solder ball. Also disclosed is a product made by the process of bending the rectangular shape of the distal end of the contact so as to receive a solder ball.

Abstract: The present invention provides a multi fiber optical ferrule, a tool for forming the ferrule, and a method of making the ferrule. The multi fiber optical ferrule is formed of two ferrule halves which are either molded or cast as imprecise blanks which are machined using a broach in order to precisely cut inner surfaces thereof for receiving an array of fibers. The inner surfaces of a pair of ferrule halves are cut simultaneously in order to assure accuracy in the fiber receiving and pin receiving channels. The halves are joined together with a fiber array placed therebetween to form the ferrule.

Abstract: The present invention provides a multi fiber optical ferrule, a tool for forming the ferrule, and a method of making the ferrule. The multi fiber optical ferrule is formed of two ferrule halves which are either molded or cast as imprecise blanks which are machined using a broach in order to precisely cut inner surfaces thereof for receiving an array of fibers. The inner surfaces of a pair of ferrule halves are cut simultaneously in order to assure accuracy in the fiber receiving and pin receiving channels. The halves are joined together with a fiber array placed therebetween to form the ferrule.

Abstract: The present invention provides a multi fiber optical ferrule, a tool for forming the ferrule, and a method of making the ferrule. The multi fiber optical ferrule is formed of two ferrule halves which are either molded or cast as imprecise blanks which are machined using a broach in order to precisely cut inner surfaces thereof for receiving an array of fibers. The inner surfaces of a pair of ferrule halves are cut simultaneously in order to assure accuracy in the fiber receiving and pin receiving channels. The halves are joined together with a fiber array placed therebetween to form the ferrule.

Abstract: An electrical connector comprises a plurality of conductive chicklets jointly defining at least a mounting surface adapted to face a motherboard, and a contacting surface adapted to face a daughterboard. Each chicklet defines at least a waveguide extending between the mounting and contacting surfaces. A plurality of differential pair terminals are dielectrically supported within the waveguides and having contacting ends extending beyond the mounting and contacting surfaces so as to electrically couple the motherboard and the daughterboard.

Abstract: A fiber optic ferrule polishing devise comprising a disk having an outer periphery and a center. Rings having a polishing surface coated with varying degrees of abrasive and attached to the disk such that the courseness of abrasive on the rings decreases from the outer periphery to the center. A ferrule holder having a ferrule holding recess adjacent to the polishing surface, a water injecting recess and an attachment arm pivotally attached to the ferrule holder such that the arm is positioned adjacent to the ferrule holding recess. A holding plate having a ferrule end face receiving recess having a smaller diameter than the ferrule holding recess and positioned adjacent to the ferrule holding recess and polishing surface. A mounting plate for mounting the ferrule holder a predetermined distance from the polishing surface. The arm biases a ferrule toward the polishing surface when a ferrule is received in the ferrule holding recess.

Abstract: The present invention provides a multi fiber optical ferrule, a tool for forming the ferrule, and a method of making the ferrule. The multi fiber optical ferrule is formed of two ferrule halves which are either molded or cast as imprecise blanks which are machined using a broach in order to precisely cut inner surfaces thereof for receiving an array of fibers. The inner surfaces of a pair of ferrule halves are cut simultaneously in order to assure accuracy in the fiber receiving and pin receiving channels. The halves are joined together with a fiber array placed therebetween to form the ferrule.

Abstract: A smart card reader (10,10') is provided for temporary electrical connection of a smart card (70) to a printed circuit board. The smart card reader (10,10') features a cover (14,14') which is hingeably mounted to a base (12) at a first end (28). The cover (14,14') is biased such that its bottom surface (26) is spaced apart from the base (12) at a second end (29). Card support projections (18) are formed from the cover (14,14') and act in combination with an actuator (20) which extends from the base (12) to draw the cover (14,14') towards the base (12) upon insertion of a smart card (70).

Abstract: This invention relates to a method of making fiber optic interferometers. First, a plurality of optical fibers are bundled and placed into a sleeve. The bundle is then encased in the sleeve and the fiber ends are cut and polished. An area of cladding is stripped back from the polished fiber ends and layers of material are deposited on the fiber ends. These layers of material have varying indexes of refraction and form a grating. The bundle of optical fibers is then removed from encasing in the sleeve.

Abstract: A stamping and forming machine (10) is provided for performing stamping and forming operations on strip material (274). The machine includes a ram (26) that reciprocates toward and away from a base plate (14). The ram carries tooling (362) that engages mating tooling (364) on the base plate for performing the stamping and forming operations. A toggle mechanism (222, 224, 226, 232, 238) is coupled to the ram (26) and the drive shaft (40) by means of a connecting rod (70) that moves the toggle over center (250) and then back again every revolution of the drive shaft. This provides two ram strokes of different lengths for each revolution of the drive shaft (40).

Abstract: An electrical contact for use in a connector between mutually opposed electrical interfaces comprises a generally planar contact body having first and second major faces. The body includes a pair of spaced apart spring arms connected by a resilient bight. The spring arms have respective free ends each with an outwardly facing edge which defines a contact nose engageable with a respective one of the interfaces. Respective shorting sections extend from each of the free ends generally toward each other. The shorting sections are offset from each other such that the first major face of one shorting section is coplanar with the second major face of the other shorting section. Upon deflection of the spring arms relatively closer together, the coplanar major faces of the shorting sections come into mutual engagement, whereby a shortened electrical path is formed between the contact noses.

Abstract: A perimeter independent precision locating member (22) for a semiconductor chip (10) so that contact sites upon the chip will be reliably positioned relative to connection members (18), such as contacts or leads, so that the chip may be electrically engageable. The locating member (22) is disposed upon the surface of the semiconductor chip (10) at a specific position relative the contact sites within the perimeter (24) of the chip and being closely matable with a complementary portion of a housing that contains the connection members (18). The method of making the perimeter independent precision locating member (22) for a semiconductor chip (10) involves coating the chip with a layer of photocurable material, masking the material in relation to the contact sites so that the portion of the material that will become the locating member (22) is exposed, illuminating the exposed portion of the photocurable material, and stripping from the chip the uncured portion to define the locating member (22).

Abstract: The invention relates to an improved, high density electrical connector, such as a backplane connector, which utilizes a flexible film having circuitry thereon for interconnecting plural planar electronic devices, such as a daughter board to a mother board. The improvement is derived through the use of a flexible film enhanced for local compliance, and to the inclusion of a force distribution member. The enhanced flexible film comprises a composite of a thin, flexible, dielectric film having upper and lower surfaces, a thin layer of metal disposed along the lower surface, and a plurality of discrete metallic pads or traces along the upper surface. Improved local compliance is accomplished by the thin metal layer having plural through slots, by mechanical punching or laser cutting, where each slot is aligned between a pair of adjacent metallic pads or traces. By this arrangement, the composite has improved local compliance between adjacent metallic pads or traces.

Abstract: An electrical contact comprises a generally flat contact body having a central member and a pair of compliant sections formed as tandem loops on opposite sides of the central member. Each of the compliant sections has a contact section at an end remote from the central member, and the body is resiliently compressible along an axis of deflection extending through the central member and the contact sections.

Abstract: This invention relates to a card edge or backplane type electrical connector, where typically two or more planar electronic devices, such as a mother board and one or more daughter boards, are electrically interconnected usually by arranging the daughter board(s) perpendicular to the mother board. The electrical connector of this invention comprises a pair of opposed housing members having a slot defined by opposing facing surfaces extending therebetween to receive a first of the planar electronic devices or daughter board, where housing member consists of first and second members floatably mounted to one another by spring means urging the first and second members away from one another. Force applying means, preferably in the form of a series of elongated canted coil spring is provided in the housing members along the facing surfaces.

Abstract: An integrated circuit chip module assembly (10) is disclosed that electrically interconnects the bond pads of the various integrated circuit chips (20) in the module to circuitry (42) on a thin film multilayer membrane (22). The module assembly includes a heat sink (16) with the back surfaces of the chips (20) in thermal engagement therewith. Contacts (40) of the bond pads of the chips (20) are in electrical engagement with the circuitry (42) on the membrane (22) and are accurately positioned by means of nests (28) formed on the surface of the membrane (22). A contact pressure equalizer (12) engages only selected areas (98) of the membrane (22) opposite the contacts (40) of the chips (20) to urge the contact surfaces (44) on the membrane (22) into electrical engagement with raised contacts (40). The contact pressure equalizer (12) includes a relatively large pressure plate (70) having a layer (74) of relatively soft rubber thereon.

Abstract: A method of manufacturing a guide plate for use in a chip carrier socket or other electrical connector provides the precision required for close-center line spacing while minimizing the cost associated with production. A block of ceramic or the like is ground to the precise outside dimensions required. Grooves are then cut in the block of ceramic, and the ceramic is then sliced into respective guide plates. The guide plates are inserted into openings provided in the electrical connector an retained therein. The grooves are dimensioned to cooperate with contact pins of the electrical connector to precisely maintain the pins in position, whereby when a chip is positioned in the electrical connector, the pins will be in position to make an electrical connection with the pads of the chip.

Abstract: A circuit board (12) and electrical connector (10) mounted to an edge (18) thereof is disclosed. The circuit board (12) includes an edge (18) and two major surfaces (14, 16) extending therefrom having circuitry (20). Plated through holes (24) are arranged adjacent the edge and are interconnected to circuitry on the circuit board. Each plated through hole (24) is associated with an opening such as a slot (26) or partial slot (27) that is formed in the edge (18) of the board so that it intersects the hole. The posts (32) of the connector (10) extend into the openings (26, 27) preferably in interference fit therewith whereafter soldering completes the electrical connections of the posts to the through holes.

Abstract: An anchor pin, for anchoring one component upon another, such as an electrical connector upon a printed circuit board, by way of a passage defined by a mounting hole in one of the components that is substantially aligned with an opening in the other component. The anchor pin having a first form with a volume larger than the volume defined by the passage while being receivable within the passage and a second form in response to an external energy input, whereby the anchor pin within the passage becomes fluid deforming to substantially fill the passage, automatically accommodating any misalignment, and overflowing therefrom to form opposing heads. The mounting pin hardens in this form to anchor the components together.

Abstract: The present invention is a socket for removably connecting electrical conductors directly to the bond pads of an integrated circuit chip, and includes a chip holder that locks into the socket for burn-in and other testing and then can be removed and easily handled by automated equipment in the further processing of the chip. The socket has a series of contacts that are guided into electrical engagement with the bond pads through precisely positioned openings in a ceramic plate. The ceramic plate and the chip holder are aligned by a pair of guide pins that project from a housing. A pair of latching members secure the chip holder to the housing during burn-in and testing.