Abstract: A connector is described which holds many contacts, and which can provide a direct ground connection to a contact, or provide a capacitive coupling between the contact and ground, in a rugged and simple construction. The connector includes a thick metal grounding plate attached to a metal shell that forms most of the outside of the connector. A dielectric layer lies on a face of the grounding plate and is covered by a metal overlayer to form a capacitor. A pin contact is connected to the overlayer by means of an insulator which has a plated-through hole engaged with the pin contact. The insulator also has a plated surface in facewise contact with the overlayer, to provide a capacitive coupling between the pin contact and the grounding plate. The grounding plate can have a hole plated with a softer material, and another pin contact can displace some of the softer material to lie in good contact with the grounding plate.

Abstract: A coaxial connector having precise matched impedance characteristics which is suitable for use with coaxial cable having a very soft dielectric core. A slotted bushing is fit over the core of the cable. The bushing is inserted into the rear of the coaxial contact assembly. A flange on the front of the bushing snaps into a recess in the wall of the coaxial contact assembly to provide a positive interlock and establish an optimum electrical path in the outer conductor circuit for high frequency performance. A sleeve is crimped down around the outer conductor of the cable which is laid over an exposed, rigid rear portion of the bushing and the rear of the coaxial contact assembly, neither of which is deformed during the crimping operation.

Abstract: An electrical connector containing removable contacts upon which there are mounted electrical circuit components. One or more such components may be mounted on the side of each contact body. A spring provides electrical connection between the components and the grounding plate in the connector containing openings into which the contacts are removably mounted.

Abstract: An electrical connector containing a grounding ring in the form of a metal bellows which is axially compressed when the mating halves of the connector are interengaged. The bellows provides a windowless EMI/RFI grounding shield for the connector.

Abstract: A connector containing male contacts is made of an electrically conductive material. The male contacts cooperate with female contacts buried inside a conventional connector to prevent electrostatic charges from building up between the female contacts.

Abstract: A pin contact receptacle stamped and formed from blank stock is provided with retention fingers, each having a hook on the end that engages fore and aft shoulders of an annular ring in the cavity of an insulator, and each having a bend in the middle. A tubular tool can be inserted from the rear over the bends of the retention fingers to collapse them into the receptacle for extracting or inserting the receptacle into the cavity of the insulator.

Abstract: An improvement is described in a type of connection system wherein an insertable circuit assembly can be pushed into a housing which contains an inplace circuit assembly, until terminals on the two assemblies lie opposite one another but out of contact, at which time a deflecting member on one of the assemblies is moved sidewardly to deflect its terminals into contact with the other terminals. In the present system the inplace assembly is movable along with the insertable assembly after they engage one another. As the assemblies move, a cam on the housing moves the deflecting member sidewardly to deflect the terminals.

Abstract: An electrical connector containing contacts upon which there are mounted electrical circuit components. A component is mounted on the side of each contact. A ground plate in the connector shell embodies a spring tang for each contact that provides electrical connection between the component and the shell. Matching polarizing surfaces on each contact and the wall of its corresponding contact cavity correctly positions the contact so that the electrical component thereon will be engaged by the spring tang.

Abstract: In the measuring instrument, a light beam generated by a laser (1) is split into two component beams (L(CW), L(CCW)) which travel along a coiled optical waveguide (7) in opposite directions. After traversing the optical waveguide, the two component beams are superimposed on each other (5) and directed to an optical/electrical transducer (8). One of the two component beams (L(CW)) is frequency-modulated in a Bragg cell (6) before entering the optical waveguide (7), switchover being effected between two modulation frequencies (f1, f2) at a given frequency (F.sub.S). The modulation frequencies are chosen so that, after traversal of the optical waveguide (7), the phase differences (.phi..sub.B1, .phi..sub.B2) between the two component beams (if the rotation rate .OMEGA.=0) are .pi./2 and 3.pi./2 or even integral multiples thereof. In case of rotation, the phase difference (.phi..sub.S) caused by the Sagnac effect is superimposed on these phase differences.

Abstract: An electrical connector having a contact with an insulator therearound in an opening in a ground plane. A conductive band surrounds the insulator. A spring supports the band in the ground plane opening in a position electrically connected with the ground plane. A semiconductor diode is mounted in a longitudinal notch in the contact in a position electrically connected therefrom to the band. In one embodiment the insulator is slotted at the notch exposing the diode directly to the band. In another embodiment the band has a ground clip extending to the diode from the band and the contact notches spaced from the ground plane opening. This spacing is longitudinal.

Abstract: A dual differential pressure/static pressure unit including a housing and three approximately parallel diaphragms sealed therewith forming low and high pressure compartments. Incompressible fluid then fills the respective spaces between the center diaphragm and that on each side thereof. Differential pressure/static pressure sensors are then provided. The housing is provided with passageways to conduct each of said fluids to the respective high and low pressure sides of said sensors.

Abstract: An adapter is described for making connection between the contact pads of a LCC (Leadless Chip Carrier) and the terminals of an ordinary low-cost socket that normally receives the LCC and connects it to a printed circuit board, while also providing connections for test equipment to monitor the interface between the LCC and the printed circuit, or just the LCC, or just the printed circuit. The adapter includes a base element which fits into the socket and which has multiple pads that contact the terminals of the socket, and a test interfacer which attaches to the base element and extends upwardly therefrom. The interfacer has a receiver for receiving a LCC and has leads that extend between the pads of the LCC and the pads of the base element. The leads also have portions that are accessible from the outside so that test equipment can be connected to them to monitor the interface between the LCC and the socket which connects to the printed circuit board.

Abstract: An instrument for measuring simultaneously the flow rate and density of a moving fluid includes means for measuring the frequency and amplitude of vortices shed by interaction of the fluid with a bluff body. Typically the sensing means includes an optical fibre movable in response to pressure changes in the fluid. Computation of the mass flow rate of the fluid can be effected.In one embodiment a light signal from a transmitter (41) is modulated via a sensor (42) and is then fed via a detector (45) and A to D converter (46) to a microprocessor (47) where demodulation and computation of mass flow rate is effected. The microprocessor also provides neative feedback to maintain the output level of the transmitter substantially constant.

Abstract: A contact retention assembly for a front insertion-front release socket contact in which the contact body behind the forward cylindrical mating end thereof is flattened and formed with a transverse opening. The bore in the cylindrical forward mating end of the contact communicates with the transverse opening. Resilient contact retention fingers extend inwardly and rearwardly from the wall of the contact passage to engage the rear wall of the transverse opening to restrict forward movement of the contact in the passage. A tool may be inserted through the forward end of the contact into the transverse opening to deflect the fingers outwardly to release the contact so that it may be removed from the front of the insulator.

Abstract: A self-locking connector is disclosed in which locking of the mating halves of the connector is achieved near or at complete mating of the connector. The locking mechanism comprises a cylindrical locking ring mounted in front of a detent ring which rotates with the coupling nut of the connector. The locking ring is formed with circumferentially extending slots providing narrow strips which are axially resilient. The strips carry locking tabs which are engageable with recesses in the detent ring.

Abstract: An electrical connector endbell in which the endbell housing is slotted so that the cable of the connector may be pushed laterally into the interior of the housing through the slot after the cable has been connected to the contacts in the connector shell. A cover is slidably removable on the endbell housing to close the slot. Screw threads are formed in the interior of the cover and the forward end of the housing for threading the endbell onto the rear of the connector shell.

Abstract: A self-locking electrical connector is disclosed in which a locking ring is mounted in an annular groove in the interior of a coupling nut on the plug of the connector. When the plug is mated with the receptacle, inwardly extending projections on the locking ring ride up over a low-angle ramp on the shell of the receptacle and then snap into a locking groove formed in the receptacle shell behind the ramp to lock the connector members together. The surface of the locking groove next to the low-angle ramp is formed as a high-angle ramp which allows removal of the projections of the ring from the groove when the coupling nut is rotated with high torque to unthread from the shell. In an alternative embodiment, the locking ring is carried by the receptacle shell, and the locking groove and angular ramps are formed on the inner surface of the coupling nut.

Abstract: A test adapter for a chip carrier having leads along the four side edges thereof. The adapter comprises an inner housing having latches on its corners which engage the undersides of the corners of the carrier body to retain the adapter thereon. The adapter also includes an outer housing on which the test contacts are mounted. The outer housing is pushed downwardly to cause the contacts to engage the carrier chip leads with a positive wiping action.