Abstract: A stylet having a non-round cross-sectional shape which is specifically adapted to reduce the adhesion or “stickiness” of contact between the stylet and the interior surface of the lumen of an elastomeric catheter through which it extends. The stylet may be “pre-loaded” into the catheter.

Abstract: A method for providing for enforcement of school bus safety laws in situations in which a driver of a vehicle near a school bus illegally passes the school bus when it is stopping or stopped and its stop-sign arm is deployed and/or emergency signals are on. The method provides a process for identifying and documenting with live streaming video a violation of school bus safety law as it occurs, documenting and preserving the evidence, presenting the evidence of an alleged violation to law enforcement authorities for determination of whether the case should be pursued, processing a citation or civil assessment to obtain payment of a fine or assessment, providing for the alleged violator to review the video and other evidence of the alleged violation, and providing for the payment of the fine or assessment.

Abstract: An anti-skid brake control system for a vehicle having a first and a second set of wheels with each wheel being provided with a brake and a brake actuator. The first set of wheels tend to lock at a lower braking pressure than the second set of wheels. Wheel speed sensors are fitted to the first set of wheels. The system includes a first and a second regulator for separately regulating the braking pressure acting on the brake actuators of the first and second set of wheels respectively. The first and second regulator co-operate to control the braking pressure acting on the first and second sets of wheels by equalizing the braking pressure.

Abstract: According to the invention, a balloon ring is supported in concentric position about each spindle on a spinning frame by a bracket supported by a mounting rod that is in turn supported on the free ends of air cylinders mounted beside and correspondingly movable with the ring rail. The pistons in the air cylinders are initially extended to support the balloon rings at a first position. That position has been determined to be in an optimum area for control of the yarn balloon during movement of the ring rail through the lower portion of its traversing motion to build the bottom half of the package. As the rail ring begins to move through the upper portion of its traversing movements and the balloon rings approach the yarn transfer guides, a limit or proximity switch is activated to retract the pistons of the air cylinders and uniformly lower the balloon rings to a second or retracted position closer to the ring rail, and positioned to control the balloon while the upper half of the package continues to build.