Abstract:
Crimping press (26) comprises an anvil (10) and a die (12) which is movable towards and away from the anvil. The anvil is moved by a rotating shaft (18) having a crank-type coupling (14, 16) to the die (12). The shaft (18) is capable of limited movement in the direction of movement of the die towards the anvil. The shaft issupported against such movement by a yieldable shaft support (46) that is calibrated to resiliently yield upon development of a predetermined reaction force in the die (12) during the final stages of crimping. When a terminal (6) is crimped onto a relatively small diameter wire (8), the shaft (18) will not be moved at all or will be moved by only a slight amount if the predetermined force is reached. When a terminal (6a) is crimped onto a larger diameter wire (8a), the predetermined reaction force will be developed before the die (12) reaches the limit of its travel towards the anvil (10) and the shaft (18) will move away from the anvil to accommodate the remaining movement of the crank pin.
Abstract:
An infrared touch input system is taught. Briefly stated, the system comprises a four-sided frame having an infrared transparent bezel (20) along the inside thereof and having infrared emitters (CR) along the bottom and one side of the frame with infrared detectors (Q) along the sides opposite the emitters. Darlington transistor arrays (U3, U4, U8, U9) are used as source and sink drivers for driving the LED's in an array. The l/O lines of a microprocessor (U2) in conjunction with the source and sink drivers are used to selectively energize each LED. Additional l/O lines (PB0-PB5, PC0-PC2) of the microprocessor in conjunction with BCD decoders are used to selectively energize corresponding infrared detecting phototransistors (Q) before, during and after LED turn-on. A host computer supplies a clocking signal for the microprocessor with programming in the microprocessor thereby automatically performing the selection and deselection of emitters and detectors. A serial data stream (DATA) is outputted from the microprocessor which indicates to the host computer the location of any broken light beams (22) thereby indicating a stylus (18) hit. Further, the optical power used with emitter-detector pairs (CR0-CR7, Q0-Q7) adjacent the corners of the bezel (20) is reduced with respect to emitter-detector pairs approaching the center of the bezel. In this manner, light which is reflected (26) after striking the side of the bezel adjacent the emitter-detector pair and which is received by the emitter is of low intensity or is ignored.
Abstract:
Electrical continuity between an electrical terminal (4) and a metal core (14) of an insulated electrical lead (12) is tested for, by simultaneously supplying substantially identical oscillatory signals to the terminal (12) and to the arms (86 and 88) of a two-arm bridge circuit (74), the arms (86 and 88) of which are connected to respective inlets of a differential amplifier (76) and are grounded through capacitances, a ground plane (22) existing in the vicinity of the lead (12). If there is electrical continuity between the terminal (4) and said core (14), the capacitance between the core (14) and the ground plane causes imbalance between the signal inputs that are applied by the bridge circuit (74) to the differential amplifier (76) to cause it to emit a continuity success signal.
Abstract:
A plurality of components, which may be in the form of electrical connectors (76) are force fitted into an actual workpiece, which may be a circuit board, by the steps of preparing a dummy workpiece (86) with tool supports (76) fixed thereto in a predetermined pattern, each tool support (76) being removably surmounted by a component insertion tool (60); placing the dummy workpiece (86) beneath a magnetic chuck (14) on a platen of the hydraulic press; lowering the platen so that the tools (60) are magnetically secured to the chuck (14); raising the platen to remove the tools (60) from the tool supports (76); replacing the dummy workpiece (86) by the actual workpiece with the components arranged thereon in said predetermined pattern; and lowering the platen so that each tool (60) on the chuck (14) force fits the components, there beneath, into the actual workpiece.
Abstract:
Connector insertion tool (11) for mounting to a press (85) having a magnetic chuck and mass inserting a plurality of contacts (6) depending from a connector (2) into a printed circuit board (87) comprises a body (12) having bores (28) therethrough and two rows of insertion fingers (46) extending therefrom. A coil spring (80) inside telescoping tubes (66, 72) in each bore (28) urges a guide (50) slidably mounted on the fingers (46) away from the body (12) when mounted to the press (85), or alternately urges a tube (66) out of the bore (28) opposite the guide (50) before mounting to the press (85).
Abstract:
A grounding clip (10) for grounding a filtered electrical connector (30 or 130) having a planar capacitor, upon mounting a forward end of the connector (30 or 130) to a ground plane (94) of a panel (90). The grounding clip (10) is secured to a mounting surface (38 or 238) of a mounting flange (34 or 234) of the connector (30 or 130) and has a spring contact arm (18) extending into a cavity (46 or 246) of the connector (30 or 130) to both engage a ground electrode (82) of the planar filter means (80) and secure the grounding clip (10) to the connector (30 or 130). An adaptor clip (100) is also provided to be secured, if desired, to the mounting flange (34 or 234) and the grounding clip (10) for providing grounding if it is desired to mount the rearward end of the connector (30 or 130) to the panel (90).
Abstract:
An electrical connector comprises a first housing (11) having electrical contacts (18) secured therein and a second housing (12) pivotally mounted within the first housing (11) with electrical contacts (27) secured in the second housing (12) in electrical engagement with respective contacts (18) so that the housings (11, 12) can be angularly positioned with respect to one another when circuit boards to which they are electrically connected are positioned at an angle relative to each other.
Abstract:
A connector assembly (26) for use with a printed circuit board (30) wherein a true coaxial connection is provided. The connector assembly includes a housing block (36) with a plurality of bores (38) aligned with the plated-through apertures (42) of the circuit board. Each of the bores (38) contains a coaxial connector subassembly (50) which provides surface contact with the signal pads (46) and ground pads (48) surrounding the apertures (42).
Abstract:
An electrical transmission cable incorporating coaxial cables, power supply cables, data conductors and telephone conductors suitable for use in residential wiring is disclosed. Cable comprises a bundle configuration in which coaxial conductors are disposed in a center of a round bundle between data and telephone conductors to reduce the continuation of signals in the data and telephone conductors.
Abstract:
A sealed electrical connector (10) has first and second insulated body members (12, 38) and a plurality of terminal members. At least one body member (12) includes a first thermoplastic portion (14) and a second thermoset portion (24) formed in a common mold. The material for the thermoplastic (14) has a melting temperature of T1 and the material for the thermoset portion (24) has a curing temperature of T2, wherein T2 is less than T1. The thermoplastic material is injected into a first mold cavity (82) and is cooled to a temperature lower than T1 and higher than T2 to form a solid first body portion (14). An internal mold portion (74) within the closed mold (72) is moved to form an additional mold cavity (84) adjacent the first mold cavity (82). The configuration of the second mold cavity (82) is at least partially defined by part of a surface of the first body portion (14). The thermoset material is injected into the additional cavity (84) at a temperature lower than T2. The thermoset material is cured by heat transmitted across the common interfacial surface (25) by the cooling of the thermoplastic material and the mold (71) in which the connector body (12) is formed. The thermoplastic material preferably is relatively rigid and forms an outer body section (14) and the thermoset material is relatively resilient and forms an inner body section (24) of the connector member.