Abstract:
An electrical connector assembly that includes means for demountably retaining electrical contacts with the connector. The contact retention assembly includes rearwardly extending latches that are resiliently expandable in a radial direction so that contacts may be demountably retained within a passage surrounded by one or more latches. An additional insert may be used to confine the latches and prevent radial expansion thereof.
Abstract:
A method of manufacturing a flexural pivot device comprising the sequential steps of forming a cylindrical housing, forming a plurality of resilient members, inserting the resilient members within the housing and securing the resilient members thereto, milling (such as by electrochemical or electrical discharge means) two diagonally-opposite arcuate annular spaces having radially-inward projections at each end of the housing thereby forming diametrically opposed and overlapping inwardly-projecting arcuate structure, and cutting a circumferential groove in the housing coincident with the overlapping arcuate structure so that limited relative rotation of one arcuate structure relative to the other may occur upon flexing of the resilient means.
Abstract:
A power amplifier configuration is described which operates in a quasi-switching mode with a clipped sinusoidal output which produces efficiencies substantially higher than expected with linear Class B operation or square wave switching operation when used in a narrow band application. This is achieved through precise control of the duration of peak saturation to produce a maximum of the fundamental frequency component of the output power. The amplifier thus controlled is defined as operating in the forced saturation mode and may alternately produce either essentially constant power or constant voltage output with respect to load variations within its narrow operating frequency band. The amplifier also retains a capability as a linear amplifier at reduced power levels. Several amplifier embodiments are described, all of which utilize the above operating concepts.
Abstract:
An electrical connector having a built-in tool for removing electrical contacts from the connector for maintenance and/or repair. Each of the contacts of the connector includes a movable bushing mounted thereon which is operable to release the contact from the connector insert. The configuration of the contact and movable bushing is such that the movable bushing may be expanded larger than the opening at the end of the bore through which the bushing passed to gain entry to the retention portion of the connector insert.
Abstract:
Radar return signals are digitized and the resultant bits entered serially into an input buffer in the form of a storage register. The bits are integrated on a bit-by-bit basis and then entered into the main memory in the form of a circulating storage register. The information stored in the main memory is subsequently recalled and conveyed through an output buffer for display on a cathode ray tube. The rate at which the bits of each word are entered into the input buffer determines the display range. In addition, the rate at which bits are entered into the input buffer may differ from the rate at which bits are displayed on the cathode ray tube.
Abstract:
A ranging and detecting system such as radar, sonar or the like is arranged to transmit the signature of a desired target. A cross correlation process takes place as the transmitted wave front sweeps past the possible targets. Back-scattered energy is received by a unit having a single optimum bandwidth and a threshold which detects only the desired target.
Abstract:
A sonar receiving system is described including a receiver and a detector for supplying a brightness signal to a cathode ray tube, the system including a circuit for preventing the display of received signals whose carrier frequencies have less than a minimum doppler shift. The system includes a frequency measuring system system having a monostable multivibrator, a time constant circuit and a bistable multivibrator having a differential output for producing output signals varying with the difference between the transmitted carrier frequency and the instantaneous received signal frequency, an amplifier for amplifying said output signals, a feedback loop connecting part of the amplified signals to said time constant circuit, a threshold gate for passing only those signals representative of velocities of reflecting objects below a threshold value. A special low pass filter is supplied including a capacitor which tends to receive a charge in proportion to the output of the video detector and a transistor which is connected to said capacitor and which responds to signals from the threshold gate to discharge said capacitor to prevent a brightness signal from reaching the cathode ray tube, such that only signals representing velocities above said threshold are displayed.
Abstract:
A surge sensory apparatus for detecting and indicating a condition of surging, or rough running, for association with a prime mover is disclosed herein. The present invention senses engine motion and by proper signal processing including any necessary filtering, generates an output signal which may indicate the quality or degree of engine surging. A method of utilizing the surging signal so generated to provide one form of engine control which may be termed a closed loop control is also disclosed. The sensory apparatus of the present invention includes a linear motion transducer, operative to generate an electrical signal indicative of engine motion on the engine mounts which signal is indicative of the torque being developed by the engine.
Abstract:
A pinion for starter gearing having a radially extending concave face, the concave face being formed so that the teeth of said pinion gear are angularly disposed with respect to the transverse plane of said pinion thus protruding outwardly from the engaging end of said pinion. In order to aid a starter drive pinion into mesh with a rotating ring gear the concave face allows the tips of the teeth to protrude from the face of the pinion and therefore easily engage the teeth of the ring gear, thus, bringing the pinion up to synchronous speed with the ring gear more quickly than face-friction alone would accomplish.
Abstract:
An absorptive dryer for a compressed air brake system having a desiccant material for removing moisture from air in the brake system. A filter is disposed upstream from the desiccant material to prevent contamination of the desiccant, and a coalescer is disposed upstream from the filter to coalesce any oil mist particles in the brake system to at least a sufficiently large size to be readily removed from the air by the filter. In order to minimize contamination of the filter, the coalescer and filter elements are positioned in the embodiments illustrated herein so that many of the coalesced oil droplets are removed by gravity from the air flow and do not reach the filter element.