Abstract: A quick-release captive clamping pin that uses a ball-lock pin and an endcap assembly to provide a tooling assembly with both holding and clamping action with a quick-release function. The captive clamping pin may include an adjustable-length ball-lock pin inserted through the tool and workpiece, where the length adjustment is used to apply clamping force.

Abstract: A guard for a hypodermic needle that includes a hub for attachment to a needle and a shield which can be attached to the hub. The shield is adapted to lie adjacent the needle and has a lip which projects outwardly to cover the tip of the needle. An enclosure for the tip of the needle is provided and located adjacent to the lip. The hub and the shield each includes complementary attachment mechanisms whereby the shield can be attached to the hub in first and second relative positions. In the first position, the needle can be used and the shield is capable of moving away from the needle to uncover the tip as the needle initially penetrates the body of a patient and of returning back toward the needle and again to cover the tip as the needle is withdrawn from the patient.

Abstract: A passenger entertainment system employing an improved digital audio signal distribution system and method for use on commercial aircraft and other vehicles. A plurality of digital audio signal sources are provided for generating a plurality of compressed digital audio signals. The compressed digital audio signals are provided to a multiplexer which domain multiplexes those signals to produce a single composite digital audio data signal. The composite digital audio data signal is provided to a demultiplexer which is capable of selecting a desired channel from the composite digital audio data signal. The selected channel is provided to a decompression circuit, where it is expanded to produce a decompressed digital output signal. The decompressed digital output signal is then provided to a digital-to-analog converter and converted to an analog audio signal. The analog audio signal is provided to an audio transducer.

Abstract: A passenger entertainment system employing an improved digital audio signal distribution system and method for use on commercial aircraft and other vehicles. A plurality of digital audio signal sources are provided for generating a plurality of compressed digital audio signals. The compressed digital audio signals are provided to a multiplexer which domain multiplexes those signals to produce a single composite digital audio data signal. The composite digital audio data signal is provided to a demultiplexer which is capable of selecting a desired channel from the composite digital audio data signal. The selected channel is provided to a decompression circuit, where it is expanded to produce a decompressed digital output signal. The decompressed digital output signal is then provided to a digital-to-analog converter and converted to an analog audio signal. The analog audio signal is provided to an audio transducer.

Abstract: An assembly of electrical components having electrical leads extending from a housing having channels for the leads extending through the end of the housing. The lead channels are of a depth about equal to the diameter of the leads with beveled bottom surface portions to engage the leads. A cover for the housing has protrusions on the inner face of the housing overlying each of the lead channels and the beveled portions and each dimensioned to interfere with the leads in the channels when the cover is secured to the housing.