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 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: 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: 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: The high speed operational recurring signature evaluation provides digital sub-systems including a data compressor and a controller. These subsystems are employed with a portable service processor (PSP) which is a standard piece of test equipment in this art. The controller interfaces with the host logic tester (PSP) to provide the repetitious detail and complex digital control requirements for programming the data compressor in response to digital instructions received from the logic tester. A unique serial data pattern corresponding to a proper signature from a node under test generated in real time at the relatively high operating speed of the board under test is generated by the data compressor.

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 vibration densitometer including a synchronous detector, a threshold detector, an integrator, an electromagnetic bridge driver, a piezoelectric crystal pick-off, a voltage controlled oscillator (VCO), a phase detector responsive to the crystal output and that of the VCO to control the VCO frequency and/or phase to provide an output signal of a frequency to energize the driver.

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 clean-in-place pump is disclosed in which the hub of the impeller extends into a pocket in which particles from the fluid being pumped may become entrapped. Axial slots in the drive shaft of the impeller create turbulence within the pocket to dislodge the particles. Back vanes on the impeller and passages through the impeller vane mounting disc cooperate to cause fluid to circulate through the pocket to flush out the particles.

Abstract: A solenoid having one or more windings, a plurality of alternate windings of which are connected in electromagnetic field bucking relationship. An alternative construction utilizes layers of bifilar windings. A first winding of each bifilar winding pair in a first layer is adapted to procduce a field to buck the field of a second winding in the same bifilar winding pair.

Abstract: An insulation displacement connector is disclosed which is particularly adapted for use with flat cable having closely spaced conductors. The termination end of each contact in the connector is formed by slitting the contact body and then offsetting the arms formed by the slit in opposite directions. Each conductor of the flat cable is pushed between the offset arms of a corresponding contact. A cap is mounted over the rear of the connector. Cavities in the cap having inclined walls engage the free ends of the resilient arms of the contacts urging them inwardly toward each other to ensure that a high strength connection will be maintained between the contacts and the conductors.

Abstract: A combined EMI/RFI shield and environmental sealing element for an electrical connector in which a helical coil spring is partially embedded in an elastomeric ring having an enlarged sealing portion on at least one side of the spring. The exposed surfaces of the coil spring engage facing peripheral surfaces on the shells of the mating connector halves of the electrical connector.

Abstract: A flapper-poppet (new) that differs from a flapper-nozzle (old) in that the flapper-nozzle is a second stage operator that employs an amplifier which operates on de-amplified pressure. Although both the flapper-poppet and the flapper-nozzle are controlled by a conventional torque motor, the flapper-poppet is a first stage operator which operates on high supply pressure.

Abstract: In order to determine the vortex shedding frequency, from which the fluid flow rate may be calculated, an optical beam, such as produced by a laser, is passed through a fluid, transversely to a vortex street therein, and modulated in dependence on the alternate high and low velocity regions comprising the vortex street. The modulated signal is detected and "cleaned" of noise by filtering with a first (high) band-pass filter of a center frequency f.sub.c, such that the first filter output comprises an amplitude modulated signal of carrier frequency f.sub.c modulated by the vortex shedding frequency, that is the frequency of oscillation of the power spectra between the respective curves for the high and low velocity regions. The first filter output is demodulated and filtered by a second (low) band-pass filter, whose output is of a frequency comprising the vortex shedding frequency.

Abstract: A device is described which operates as a "mechanical fuse" in a guy arrangement such that when loading forces on the guyed structure exceed a predetermined level, the device will add length to the guy arrangement. The device includes two plates coupled by a hinge bolt and a shear bolt. When the force exceeds the predetermined level, the shear bolt is severed by the plates allowing the plates to "scissors" open about the hinge bolt.