Abstract: The present invention relates to filler tubes and, more particularly, to fuel filler tubes and methods of attaching them to automobile fuel tanks. The fuel filler tube of the present invention includes an inlet tube, a retainer member, sealing means and a fuel tank having a downwardly extending diameter portion. The retainer is disposed over the downwardly extending diameter portion and adhered to the tank. The inlet tube is then inserted into the fuel tank aperture until the inlet tubes annular flange engages the fuel tank's annular lip. A crimping tool is then inserted through the axial bore of the inlet tube and a plurality of bearings contained on the crimping tool are forced radially outwardly to thereby crimp the inlet tube and downwardly extending diameter portion together. The retainer member includes a plurality of recessed areas for hosting the expanded inlet tube and tank portions.

Abstract: An optical coupling fluid which is transmissive to light, is a polymerized (cured) gel prepared from a mixture of two silicon components, one a silicon oil and one a silicon gel. The miscible substances can be combined to provide a composition suitable for preparation of a thin film between the optical components which then polymerizes to form the gel without danger of leakage. The transmissive characteristics are excellent, and coupling material does not become opaque to short wavelengths under use conditions.

Abstract: A mask for use in conjunction with a lapping platen for working an ultra thin work piece with the mask formed to provide circumferentially arranged open receptive areas corresponding to the configuration of the work piece together with a pressure block of identical configuration to the receptacle openings and the work piece for maintaining the same in a controlled flatness upon the rotating lapping platen of a lapping machine.

Abstract: A wide range, variable rate clock recovery circuit for NRZ data is provided having a PLL and a frequency synthesizer which share control of a common VCO in single loop realization. Narrow PLL bandwidths and short acquisition time may be achieved employing the frequency synthesizer to initially control the VCO to produce an estimate of the data frequency which is accurate to within the bandwidth of the PLL. Once this VCO frequency is attained, the PLL disables the frequency synthesizer control of the VCO and provides fine tuning control of the VCO output frequency itself. Single loop realization is achieved with a wide range VCO which includes a narrow range VCO, a frequency divider, and an auto-ranging circuit.

Abstract: A fluid system for the rail brake cyclinder of a highway/rail vehicle including a control valve responsive to brake pipe pressure drops to provide a control signal to a variable load relay valve assembly which provides brake cylinder pressures. The relay valve assembly maintains the rail brakes deactivated in the highway mode, provides braking pressure independent of the variable load portion for low pressure in the control valve's auxiliary reservoir, maintains a rail reservoir and rail suspension supply changed from the highway and rail supply lines, and creates an emergency condition in the brake pipe for low rail supply line and or rail reservoir pressure.

Abstract: A system for generating a dry coal weight signal is provided, wherein the moisture content of a coal feed to a solid fuel burner is determined, and the dry coal weight calculated on that basis. Moisture content is determined by measuring density of the coal being fed and/or the torque required to drive a head pulley about which the belt feeding the coal is led at a constant velocity. The dry coal weight signal can be communicated to the drive means, whereby the belt speed is accelerated or decelerated to maintain a constant supply of coal, on a dry weight basis, to the boiler. Also disclosed is a control system employing the dry coal weight signal for a plurality of control functions.

Abstract: Implement and steering actuators are selectively actuated through steering and implement control valves respectively by fluid power output of respective steering and implement pumps. A pressure compensator is provided for at times diverting excess fluid from the steering pump to the implement control valve, and the implement pump applies fluid pressure to the implement valve through an unloading valve that gives the charging of an accumulator by the implement pump preference over operation of the implement actuator. The sensing of loss of fluid power in the steering pump activates an emergency control valve to connect the accumulator to the steering valve and to disconnect the pressure compensator from the implement control valve.

Abstract: The high efficiency mixing method uses an impeller with a central axial hub adapted for attachment to a rotatable driven shaft of a mixer motor. Under certain operating conditions, the method has a higher mass transfer efficiency, in both directions of rotation when compared to other methods using other impellers.