Abstract: Disclosed is a pipe fitting specifically designed for repair applications called a Repair Pipe Fitting. One or more of the arms (inlets or outlets) of a Repair Pipe Fitting is longer than the corresponding arm on a standard pipe fitting, so that connecting pipes that have been cut to remove a standard pipe fitting do not have to be extended to install a Repair Pipe Fitting. Repair pipe fittings are best suited for use with plastic pipe, where joints are sealed with cement, although Repair Pipe Fittings may also be used with metal pipe, where joints are sealed with welds or threads. Repair pipe fittings may be sealed using the same sealing method as used by the original fittings, such as cement for plastic fittings and pipes. Repair pipe fittings may also be sealed using a non-permanent sealing method such as compression caps and gaskets.

Abstract: A compact chassis-integrated slide assembly for use with electronic or other equipment. A movable chassis is translated relative to a stationary rack. Two or more slide guides are fastened to each of the two side walls of the chassis. The slide guides are adapted to slidably engage a channel in a floating slide member. The floating slide member supports the chassis while at the same time permitting relative translation of the chassis and the floating slide by means of the slide guide sliding in the channel of the floating slide. The floating slide in turn slidably engages a rack sheath where the rack sheath is adapted to be rigidly attached to the stationary rack.

Abstract: A second order filter signal is derived in response to a phase comparison of two signals by selecting an input voltage from a reference voltage, a first voltage potential higher than the reference voltage, and a second voltage potential lower than the reference voltage depending on the phase error of the two signals. The input signal is applied to a loop filter including a non-inverting integrator and to a feed forward circuit. The outputs of the amplifier and feed forward circuit are summed and applied to an output terminal as the second order filter signal. An improved phase locked oscillator circuit is provided in which a digital phase comparator drives an active loop filter including a feed forward circuit and a non-inverting integrator.