Abstract: A rattle and noise detection system useful for a large variety of automotive vehicles is provided. The vehicles are examined in a stationary position with one of their tires having been driven onto said detection system. This tire rests against a roller assembly driven by an electromechanical drive train, electrically powered and remotely controlled. Each roller in the assembly can individually rotate around its center axis as the assembly itself rotates over a specific RPM range causing the longitudinal side of each roller to continuously strike the tires' treaded lower half at a predetermined position. This position is primarily a function of the tire size and the roller assembly's diameter and mounting position in the detection system. As the rollers continuously strike the tire, vibrations and shock waves are produced in the vehicle causing and maintaining the same annoying rattles, squeaks and noises noticeable during driving conditions.

Abstract: This invention relates to an improved jack bit comprised of a tubular jack actuator for driving a scissor or screw type jack and a shaft having a curved latch end engaged within the jack actuator for effecting rotation of the jack actuator. The improvement resides in a centering barrel slidably carried on the shaft and within the jack actuator whereby on rotation of the shaft by a power driver, the centering barrel provides for smooth and continuous transfer of energy of the shaft engaged with the jack actuator.

Abstract: The utilization of double knit fabrics is extended to fields other than their conventional employment in wearing apparel. This is accomplished by dimensionally stabilizing the otherwise easily distortable double knit material by applying to one surface thereof a controlled layer of a latex of a polymeric coating composition comprising a copolymer of ethylene and vinyl chloride in an aqueous vehicle. The thus coated material is properly cured and dried.

Abstract: A process is provided for the separation and recovery of a major portion of the C.sub.2 + hydrocarbon content of a feed gas comprising hydrogen, methane, ethylene, and ethane. The feed gas is introduced to a dephlegmator to effect its separation into a vapor stream and a condensate stream. The condensate stream which is rich in C.sub.2 + hydrocarbons is passed to a demethanizer column where it is fractionated into an overhead methane-hydrogen stream and a bottoms product ethylene-ethane+ stream.

Abstract: A multistage treatment is disclosed for the removal of carbonaceous BOD and nitrogenous pollutants from wastewaters, wherein the influent wastewater undergoes successive nitrification-denitrification in the presence of recycled activated sludge containing a mixed culture biomass comprising heterotrophic and autotrophic organisms. The initial mixing of the wastewater with recycled sludge is effected in the presence of sufficient oxygen to maintain oxic conditions. The mixed liquor from the initial oxic treatment, without intermediate separation of solids, is passed to an anoxic stage wherein nitrites and nitrates (NO.sub.x .sup.-, x = 2,3) formed by oxidation of ammonium compounds are reduced to nitrogen gas. Any number of oxic treating stages each followed by an anoxic stage may be employed. The final treating stage prior to solids separation from the mixed liquor may be either oxic or anoxic. The separated solids constitute the activated sludge recycled to at least the initial mixing stage.