Abstract: A vibration densitometer having a probe including a hollow cylinder.

Abstract: A protection system for directing high oil content water ballast discharge to a slop tank and for controlling the rate of discharge of low oil content water ballast.

Abstract: A resilient insulator having a hole therethrough is supported and a first reciprocable mechanism is provided to telescope a hollow cylinder into the insulator hole to stretch the hole to a position larger in cross section. A second reciprocable mechanism is provided to telescope an insulated rod partway into the cylinder and insulator. A third electrically operable mechanism responsive to a contact touching one end of the rod is provided to actuate one of the first and second mechanisms to relieve the insulator in a manner to allow the same to hold the contact fixedly in inward radial compression in the insulator hole.

Abstract: A fluid circuit wherein the cooling coil flow resistance of a furnace and the flow resistance of a needle valve are balanced against those of two orifices to determine cooling coil leakage.

Abstract: A net oil computer including a differential pressure unit and a turbine or positive displacement flowmeter. The flowmeter produces output pulses at a frequency directly proportional to the rate of volume flow through a pipeline. The output of the flowmeter is impressed upon the pole of a single-pole, double-throw electronic switch. One switch contact is connected to an indicator through a divider, a driver amplifier and a counter. The other contact is also connected to an indicator through a divider, a driver amplifier and a counter. The switch is operated by a gate generator connected from the differential pressure unit.

Abstract: An electrical penetration assembly for a nuclear reactor containment wall in which solid copper conductors are removably mounted into the penetration canister from outside the containment wall. Each conductor is mounted in a feedthrough pipe by glass-sealed headers, one of which has a metal bellows that permits axial expansion of the conductor when it is subjected to elevated temperatures.

Abstract: A flow control valve particularly useful for a vapor recovery system of a gasoline station. Gasoline and gasoline vapor flow through separate passages in the valve. A restriction (venturi) is provided in the gasoline passage so that a pressure differential will be produced in the passage as a function of the rate of flow of gasoline passing therethrough. A first diaphragm carrying a valve element which controls the flow of fluid through the vapor passage is responsive to said pressure differential so that the flow rate of vapor passing through the valve will be proportional to the flow rate of gasoline. In each of two alternative embodiments, another diaphragm responsive to gasoline pressure is ganged to the valve to compensate for gasoline pressure variations. In a further embodiment, the vapor control valve operates in an "on-off" mode so that a maximum vapor "draw back" is effected whenever gasoline flow of any magnitude is extant.

Abstract: A net oil computer which can gate out turbine meter pulses by producing gating pulses of time widths T.sub.o and/or T.sub.w directly proportional to percent oil, by volume, and/or percent water, by volume, respectively, flowing as a mixture in a pipeline, where ##EQU1## K is a constant, D.sub.M IS THE MEAN DENSITY OF THE MIXTURE,d.sub.w is the water density, andd.sub.o is the oil density.A densitometer provides the d.sub.m input. The water density does not vary significantly with temperature. A temperature probe can be used to compensate for changes in d.sub.o due to changes in temperature.

Abstract: A valve including a ball vibrated by a solenoid operated spring biased plunger wherein the ball is moved against one end of each of inlet and exhaust ports alternately in a somewhat oversized cavity to control, for example, the pressures on respective opposite sides of a displacement adjustable piston connected from the inlet port and cavity. The stroke of the piston may be made adjustable, if desired. The solenoid is energized with an A.C. source that has an adjustable frequency. An outstanding feature resides in the use of a needle valve at the other end of the inlet port. Tayloring can thereby be performed, whereas the same had not been otherwise possible in the prior art.

Abstract: A device for measuring the proportion of a first liquid in a lower refractive index second liquid with which the first liquid is immiscible, such as oil in water. An unclad optical fiber, having an index of refraction between those of the two liquids but at least equal to and not more than ten percent greater than that of the first liquid. A light energy source and detector are connected by the immersed fiber and the light energy transmission measured to determine liquid proportions.

Abstract: A vibration densitometer having a permanent magnet biased magnetostrictive drive unit.

Abstract: In a tumbler switch, a lever is supported by a bearing in a cylinder in which space is limited. The load on the bearing is to be evenly distributed over portions of walls of the cylinder. The bearing which is used is a ball bearing, the direction of rotation of which is limited to one axis. The bearing includes a ball that has spaced flat end surfaces located in parallel planes. This type of toggle bearing is especially useful when employed in a switch housing.

Abstract: A vibration densitometer including an electromechanical oscillator having an automatic phase control.

Abstract: Vibration densitometer probes having vanes with central weights notched to vibrate at the same frequency when immersed in a fluid at the same density.

Abstract: A plug for a vibration densitometer probe to obviate calibration shifts caused for a number of reasons.

Abstract: An electromechanical oscillator having a feedback shifted alternately to two different phases, and two digital function generators to derive viscosity and density signals on a time shared basis.

Abstract: An anti-skid brake control system having two wheel velocity pick-up coils connected to respective common mode rejection circuits. A coil open detector including a Norton amplifier is also connected from the circuits to disable the system controller should an open develop in one of the pick-up coils.

Abstract: A flow control valve particularly useful for a vapor recovery system of a gasoline station. Gasoline and gasoline vapor flow through separate passages in the valve. A restriction (venturi) is provided in the gasoline passage so that a pressure differential will be produced in the passage as a function of the rate of flow of gasoline passing therethrough. A first diaphragm carrying a valve element which controls the flow of fluid through the vapor passage is responsive to said pressure differential so that the flow rate of vapor passing through the valve will be proportional to the flow rate of gasoline. In each of two alternative embodiments, another diaphragm responsive to gasoline pressure is ganged to the valve to compensate for gasoline pressure variations. In a further embodiment, the vapor control valve operates in an "on-off" mode so that a maximum vapor "draw back" is effected whenever gasoline flow of any magnitude is extant.

Abstract: A vibration densitometer which can be calibrated to an accuracy never before possible, i.e. to within an error of 0.25 percent or less, and in two fluids or gases or gas mixtures, one, both or none being an elemental fluid or gas. The fluids or gases or fluid or gas mixtures have different density equationsd.sub.i = A.sub.i T.sub.i.sup.2 - i B.sub.id.sub.j = A.sub.j T.sub.j.sup.2 - B.sub.jThe first of which is converted by .DELTA.T.sub.i, an extremely linear function of container or pipeline pressure, such thatd.sub.j = A.sub.i (T.sub.i - .DELTA.T.sub.i).sup.2 - B.sub.i.Whered.sub.i and d.sub.j are the two respective fluid densities, T.sub.i andT.sub.j are two periods directly proportional to the reciprocals of the respective vibration frequencies, and A.sub.i, A.sub.j, B.sub.i and B.sub.j are constants.It was heretofore unknown to calibrate a vibration densitometer in two fluids or gases or fluid or gas mixtures with the aforesaid extremely small error.

Abstract: A system for trial period ignition of a fluid fuel burner having an oscillator with a gate in the feedback path thereof, the oscillator providing power to a burner fuel valve and to a spark generator, wherein oscillator operation is sustained after the period only upon flame detection which keeps the oscillator feedback path gate closed.