Abstract: Disclosed are an intercommunication system cable test method and a ruggedized, intercommunication system cable test unit. The intercommunication system cable test unit may include end-to-end test circuitry, a power source, output devices, and one or more connection points. The power source is contained within the portable ruggedized, intercommunication system cable test unit. The one or more connection points may be coupled to the end-to-end test circuitry and be operable to couple with military-specified communication cable connectors of an intercommunication system cable. The end-to-end test circuitry may be operable to apply a test signal at a respective input to each respective pin of the predetermined military-specified communication connector, generate an output signal based on receipt of the applied test signal, and apply the output signal to the output device indicating a response of the end-to-end test circuitry to the applied test signal.

Abstract: Disclosed is an example of a movable workspace configured to operate in a harsh environment. The exemplary movable workspace includes a primary compartment and a deployable expansion compartment. The primary compartment may have a primary workspace, and at least one primary connection point adapted to releasably secure work equipment within the primary workspace. The deployable expansion compartment may have an expansion workspace, and at least one expansion connection point adapted to secure the work equipment within the expansion workspace. The movable workspace may include a movement component to facilitate movement of the movable workspace either on its own or with assistance from a transport vehicle. The movable workspace is configured to be transported in a transport state in which the expansion workspace meshes with the primary workspace. Upon delivery at a work site, the expansion workspace extends from the primary workspace to place the movable workspace in a work state.

Abstract: A pressure relief device for venting an internally pressurized container such as an aerosol can has three sections, a concave annular outer area, a circular central area and an annular intermediate area connecting the concave annular area to the circular area. The three sections all have the same thickness. The central area has a center point and an arc shaped score line extending through 132° to 138°, preferably 135°, about an arc center. The arc center is offset from the center point of the circular area by a distance of from about 0.290 inches. The score line has a depth of from 0.010 to 0.012 inches and is trapezoidal in transverse cross section. The intermediate area meets the circular area at an angle greater than 90° and the intermediate area meets the concave annular outer area at an angle greater than 90°.

Abstract: A pressure relief device for venting an internally pressurized container such as an aerosol can has three sections, a concave annular outer area, a circular central area and an annular intermediate area connecting the concave annular area to the circular area. The three sections all have the same thickness. The central area has a center point and an arc shaped score line extending through 132° to 138°, preferably 135°, about an arc center. The arc center is offset from the center point of the circular area by a distance of from about 0.290 inches. The score line has a depth of from 0.010 to 0.012 inches and is trapezoidal in transverse cross section. The intermediate area meets the circular area at an angle greater than 90° and the intermediate area meets the concave annular outer area at an angle greater than 90°.