Abstract: Disclosed is a storage stable blend of a long chain polyol and a short chain diol wherein the diol is present in an amount whereby the diol and polyol form an incompatible blend. The blend is rendered storage stable by the addition of a compatibilizing amount of an ethylenically unsaturated esterol. Alternatively, the compatibilizing agent comprises an adduct of the ethylenically unsaturated esterol and a polyol, e.g. glycol. The storage stable blends find utility in making rigid, tough RIM parts.

Abstract: System and apparatus for monitoring vibrational and other detected aspects of a machine. Transducer outputs are scanned through the use of a microprocessor, the memory components of which retain pre-determined set point information. The channel representing a given transducer output is displayed visually on the apparatus for 5 second intervals in combination with a linear form of disply showing monitored transducer values as well as set point values. In the event of detected threshhold level warnings or the like, additional visual indicators representing both system and channel status conditions are energized. The system includes a small, hand-held programmer by which any of a broad variety of functions may be readily entered into the memory of the processor through the simple manipulation of a single potentiometer. During the programming procedure, the values being inserted are displayed on the noted bar chart. Preferably, the chart is present as a linear array of 50 LEDs.

Abstract: An active filter provides precision filtering of an output signal over a wide range of signal input frequencies. Overall the active filter comprises a simulated L/C resonating loop which includes: a first operational amplifier in a loop with an operational transconductance amplifier simulating a capacitance; and a second operational amplifier in a second loop with a second operational transconductance amplifier simulating an inductance. The apparent capacitance of the first loop and the apparent inductance of the second loop can be regulated by applying a control current to each of the operational transconductance amplifiers. In a preferred embodiment the control current is derived as an antilogarithm of a linear voltage where the linear voltage corresponds to the logarithm of the filter resonant frequency. The filter output provides a constant percentage band width signal independent of the tuned frequency. The amplitude gain at resonance similarly is independent of the tuned frequency.

Abstract: A method for composting solid waste material wherein, in initial treatment stages an optimum particle size is developed at a comminution station. Following an initial air classification arrangement, heavy inorganic materials are segregated to the extent that aluminum, glass and paper characterized products are removed for recycling purposes. A characterizing feature of the invention resides in the development of an optimized moisture content or digestible classified size optimized material at a relatively early stage prior to maceration developing a pulpous substance for digestion. A pug-mill arrangement is utilized for adding optimized moisture prior to digestion and maceration and a cage mill is utilized for the maceration stage of the process.

Abstract: An all solid state transducer and electronic system is disclosed for measuring flow through the use of a small, low temperature heater. The heater transmits an amount of heat to the flowing medium dependent on flow rate. A first temperature sensor is located near the heater and within its thermal influence. A second temperature sensor is thermally isolated from the heater. The heater and first sensor are located relative to each other such that the difference between the temperature sensors is proportional to the logarithm of the flow rate.