Abstract: A crimping die is provided for use in a crimping machine for radially crimping the collar of a hose coupling onto the end of a hose. The crimping die includes a die assembly having a plurality of die segments and at least one unitary retention and separator band. The die segments are adapted for arrangement into a circular array about a central axis, with each of the die segments having a radially inner surface forming a section of a common collar bore about the central axis for receipt of the collar of the hose coupling. Each die segment includes a top surface having an arcuate groove formed therein. The groove has a predetermined cross-sectional configuration with an open upper end that is provided with a lesser width than the width of at least a portion of the groove below the upper end. The unitary retention and separator band is constructed of an elastomeric material and has a like plurality of die segment retaining portions and a plurality of spacer portions.

Abstract: An electro-optical light modulator having a reduced piezo-optical effect by providing a plurality of optically series-connected modulator crystals having geometric dimension differing from one another such that for pulse control the overlapping of acoustical transients generated in the individual modulator crystals is excluded, along the beam path and where periodical control is used, the overlapping of the piezo-electrical resonant frequencies of the individual modulator crystal is excluded.

Abstract: A track support for supporting a flexible continuous loop track when it is being removed or installed on a vehicle. Removing or installing the continuous loop flexible track by conventional methods is very difficult because of its weight and flexibility. The subject apparatus includes a track support having first and second ends with curved plates approximately the shape of semi-circular ends of the track loop where it engages wheels on a vehicle. The first and second ends are supported by at least one beam attached thereto in a manner to adjustably set the track support snug with the flexible track loop. Several retainers with hooks and fasteners secure the track to the support. Thereby the flexible track is held in an oval shape when being removed or installed on the vehicle similar to the shape it is when on the vehicle.