Abstract: A Dynamic Manifold Locking System (DMLS) enables remote-controlled disconnections and reconnections of pumping units from a pressurized (“hot”) fracking fluid manifold while the manifold remains pressurized and serving a well. The DMLS's connector assemblies integrate high-pressure and low-pressure connections, and remote testing of those connections, in order to enable the disconnections and reconnections of pumping units while the manifold remains pressurized. A Universal Positioning System (UPS) enables remote alignment and connection of two fluid connector assemblies integrated into the DMLS.

Abstract: A centralizer for stabilizing fluid flow through a hollow shaft has a body with an axis, an outer surface and a circumference. Fins extend from the outer surface and include a first pair of fins that are axially aligned with each other and circumferentially spaced from each other. A second pair of fins are axially spaced a first distance from the first pair of fins. The second pair of fins are axially aligned with each other and circumferentially spaced from each other. The first and second pairs of fins are circumferentially offset from each other.

Abstract: A solenoid assembly is provided having a sealing device disposed in a recess of the over-molded material in order to seal the electrical leads extending from the coil of the solenoid through the recess. The sealing device is an elastomeric member having holes defined therein for the electrical leads to pass through and a larger portion that is disposed in the recess. With the larger portion pressed into the recess, a force is transferred through the elastomeric material onto the electrical leads to prohibit ingression of contaminants into the windings of the coil. The electrical leads could be either lead wires or rigid pins. The elastomeric material also serves to provide vibration damping.

Abstract: An electronic engine control is disclosed having an electronic cooling fan control. The cooling fan is turned on or off according to a predetermined strategy and inputs from several engine parameter sensors. By disengaging the cooling fan when it is not needed for engine cooling, the fan control reduces the power that is unnecessarily drawn from the engine to drive the fan.