Abstract: Disclosed are two embodiments of a coaxial electrical connector designed for use in hazardous locations. Mating connectors are connected coaxially, and coupled together by means of a threaded connection. When the mating connectors are connected, they cannot be disconnected manually. Rather, a tool is necessary to disconnect the connectors. In one embodiment, each connector includes a generally cylindrical coupler member having integral, axial fingers or tines spaced circumferentially. The couplers are rotatably mounted to inserts in which the connecting elements are embedded. A ratchet assembly permits the couplers to be threaded together to make a connection but is overridden in the unconnecting direction, requiring a tool to be placed in the space between adjacent tines to connect the coupler to an associated outer housing which may then be turned to disconnect the connectors.

Abstract: Disclosed are two embodiments of a coaxial electrical connector designed for use in hazardous locations. Mating connectors are connected coaxially, and coupled together by means of a threaded connection. When the mating connectors are connected, they cannot be disconnected manually. Rather, a tool is necessary to disconnect the connectors. In one embodiment, each connector includes a generally cylindrical coupler member having integral, axial fingers or tines spaced circumferentially. The couplers are rotatably mounted to inserts in which the connecting elements are embedded. A ratchet assembly permits the couplers to be threaded together to make a connection but is overridden in the unconnecting direction, requiring a tool to be placed in the space between adjacent tines to connect the coupler to an associated outer housing which may then be turned to disconnect the connectors.

Abstract: A quick disconnect electrical connector resistant to vibration-induced disconnect includes a male connector and a female connector each having opposing segments of flexible thread which inter-engage when the male and female are assembled. The thread segments of the female connector are on a flexible wall which deflects to permit mating engagement when the two connectors are pushed together. A peripheral rim is formed in the overmold of one connector and a mating groove is formed in the overmold of the other, mating connector to form a tactile indicator that the connection is complete and to secure the two mating connectors together.

Abstract: A device for monitoring power conditions in the power leads of a communication network or power distribution bus includes a microprocessor 54 which measures the voltage on the power leads and computers a filtered bus voltage, Vbus, and a time-averaged bus voltage, Vave. From these, the microprocessor determines whether overvoltage, undervoltage or ripple conditions exist to actuate associated visual indicator intermittently (LEDs 57, 58, 59), or surge, brownout or transient conditions to actuate the associated indicators (LEDs 57, 58, 59) constantly for their associated slot times in a display cycle. The device may be in the form of a compatible terminator or a Tee for the network or power bus.

Abstract: A quick disconnect electrical connector resistant to vibration-induced disconnect includes a male connector and a female connector each having opposing segments of flexible thread which inter-engage when the male and female are assembled. The thread segments of the female connector are on a flexible wall which deflects to permit mating engagement when the two connectors are pushed together. The male and female connectors are keyed together when assembled to prevent rotation; and the flexible thread segments engage to prevent unintentional disconnect.

Abstract: A device for monitoring power conditions in the power leads of a communication network or power distribution bus includes a microprocessor 54 which measures the voltage on the power leads and computers a filtered bus voltage, Vbus, and a time-averaged bus voltage, Vave. From these, the microprocessor determines whether overvoltage, undervoltage or ripple conditions exist to actuate associated visual indicator intermittently (LEDs 57, 58, 59), or surge, brownout or transient conditions to actuate the associated indicators (LEDs 57, 58, 59) constantly for their associated slot times in a display cycle. The device may be in the form of a compatible terminator or a Tee for the network or power bus.

Abstract: The present invention is a system and method for nondestructive vibrational testing of a specimen, such as a paper core tube. The system analyzes transverse vibrations of the simply supported specimen. The system measures the weight change at one end of the specimen and determines the frequency of vibration and the rate of energy loss. The testing is such that the specimen can be used after testing.

Abstract: A hand held bar code scanning device includes scanning circuitry to conduct bar code scanning and a manually actuated optical trigger switch, connected to the scanning circuitry, to initiate bar code scanning.

Abstract: A communication system includes a network of transaction management systems having the same or different operating system software versions. Each transaction management system includes an associated input device for generating a transaction request or message switch. The transaction requests and message switches generated by a particular input device can be executed by the transaction management system associated with the device, and alternatively by remote transaction management systems in the network. To provide for remote execution of transaction requests and message switches, the system includes means for generating transaction request messages and message switch messages that have prefixes which can be dynamically extended as required for use by the appropriate remote transaction management system, without requiring upgrading the software of the remote system.

Abstract: A safety belt adjustment device and a safety belt system are disclosed in which an automobile shoulder belt is adjusted by a device mountable on the shoulder belt itself engages the belt so as to reduce the angle at which the belt crosses the passenger's chest, thereby lowering the point at which the belt crosses the center of the passenger's chest, thus allowing the shoulder belt to be safely and comfortably used by people who, for physical reasons such as shortness, would otherwise be unable to use the shoulder belt.

Abstract: Disclosed is a waterproof, moisture-breathable, non-macerating and hypoallergenic fabric including a moisture-absorbent, non-macerating hypoallergenic substrate formed from natural or synthetic fibers, the moisture absorbency of the substrate being provided by the inherent moisture absorbency of the fiber selected and the attractive capillarity of the formed substrate. An acrylic polymer basecoat is coated onto said substrate. The basecoat has sufficient viscosity when applied to prevent strikethrough when the basecoat is applied to the substrate. A topcoat is selected from the group consisting of polyether urethane and silicone latex and is coated onto the basecoat.