Abstract: A submersible pump assembly. The submersible pump assembly comprises a motor comprising a first drive shaft; a seal section comprising a second drive shaft that is coupled to the first drive shaft of the motor; and a centrifugal pump assembly comprising a third drive shaft that is coupled to the second drive shaft of the seal section and a plurality of pump stages, wherein each pump stage comprises an impeller coupled to the third drive shaft and a diffuser retained by a housing of the centrifugal pump assembly, wherein the diffuser of each pump stage comprises a first plurality of vanes each having a first axial length and a second plurality of vanes each disposed between a pair of vanes of the first plurality of vanes and each having a second axial length, wherein the second axial length is less than the first axial length.

Abstract: A submersible pump assembly. The submersible pump assembly comprises a motor comprising a first drive shaft; a seal section comprising a second drive shaft that is coupled to the first drive shaft of the motor; and a centrifugal pump assembly comprising a third drive shaft that is coupled to the second drive shaft of the seal section and a plurality of pump stages, wherein each pump stage comprises an impeller coupled to the third drive shaft and a diffuser retained by a housing of the centrifugal pump assembly, wherein the diffuser of each pump stage comprises a first plurality of vanes each having a first axial length and a second plurality of vanes each disposed between a pair of vanes of the first plurality of vanes and each having a second axial length, wherein the second axial length is less than the first axial length.

Abstract: A CFME apparatus for continuously measuring coefficient of friction of a paved runway or paved road at any speed up to 105 kilometers per hour with improved efficiency for more precise measurements on ice-contaminated pavement, the improved precision being achieved by reducing the standard deviation in the file of recorded measurements normally recorded at an average rate of one measurement per second includes a frame attached to a vehicle mounting a vertical rotatable shaft pivotally carrying a suspension arm trailing rearwardly and downwardly so as to carry a test wheel at a rear end thereof in a wheel plane different from a forward plane to swivel about an upstanding axis in response to a torque applied to the suspension arm about the upright axis by the test wheel. A sensor is responsive to changes in the angle between the forward plane and the wheel plane caused by changes in coefficient of friction.

Abstract: A CFME apparatus for continuously measuring coefficient of friction of a paved runway or paved road at any speed up to 105 kilometers per hour with improved efficiency for more precise measurements on ice-contaminated pavement, the improved precision being achieved by reducing the standard deviation in the file of recorded measurements normally recorded at an average rate of one measurement per second includes a frame attached to a vehicle mounting a vertical rotatable shaft pivotally carrying a suspension arm trailing rearwardly and downwardly so as to carry a test wheel at a rear end thereof in a wheel plane different from a forward plane to swivel about an upstanding axis in response to a torque applied to the suspension arm about the upright axis by the test wheel. A sensor is responsive to changes in the angle between the forward plane and the wheel plane caused by changes in coefficient of friction.

Abstract: The system herein disclosed and claimed is an educational construction system.

Abstract: A bulk bag includes at least first, second, third, fourth and fifth panels. The first panel forms a first sidewall, a first bottom wall and a first opposite sidewall. The second panel is attached to the first panel and forms a second sidewall adjacent to the first sidewall, a second bottom wall adjacent to the first bottom wall and a second opposite sidewall adjacent to the first opposite sidewall. The third panel is attached to the first panel and forms a first end wall attached to the first sidewall, the first bottom wall and the first opposite sidewall. The fourth panel is attached to the second panel and forms a second end wall attached to the second sidewall, the second bottom wall and the second opposite sidewall. The fifth panel is disposed between and attached to the first and second panels to form a first compartment and a second compartment.

Abstract: A bulk bag includes a body having sidewalls, a bottom wall and a pair of opposed lift sleeves adapted to receive lifting members for lifting the bag and contents thereof. Each lift sleeve has a first sleeve end and a second sleeve end attached together and proximate to a bottom of the sidewall to form a loop, and a portion of the sleeve extending from the second sleeve end is attached to an adjacent portion of the sidewall such that the loop maintains a substantially open position.

Abstract: The mole trap includes a base assembly and an upper movable frame. Two vertical guide rods are attached to the base assembly and pass through the bores through the upper movable frame. Springs urge the movable frame away from the base. Two U-shaped rods are attached to the movable frame and extend under the base. An upper horizontal pin is fixed to the movable frame. A lower horizontal pin is fixed to the base. A tension link connected to the upper pin. A recess in the link receives the lower pin and holds both springs in loaded condition. A bracket with a tension link recess is pivotally mounted on the lower pin. A tension link release surface on the bracket releases the tension link when a mole sensor pivots the bracket.

Abstract: A space cargo delivery apparatus and method has a flexible beam member, an end base, and stabilizing thrusters spaced along the length of the beam member for stabilizing and guiding the beam member. The end base is positioned at the distal end of the beam member. The beam member is inflatable so that it can support a compression load. The apparatus further has a retractor, which is connected to a proximal end of the beam member for storing the beam member in a deflated state and for controlling the amount of the beam member extending from the retractor in an inflated state. Alternatively, instead of the stabilizing thrusters, the delivery apparatus can use flexible beam members and a corresponding number of retractors to store the beam members and to control the lengths thereof extending from the retractors so that the end base can move in a relatively straight line.

Abstract: The present invention is for an implementation of a multi-stage digital interpolator and a method of interpolation, where n/2 additions are performed, where n=the number of bits in each filter coefficient being multiplied. Scaling and multiplication of data with coefficients is performed using a common architecture. Coefficient values, having an associated scaling factor, are stored in memory. The coefficients are stored in coded form, and are then decoded prior to multiplication by the data values.

Abstract: This invention is for a multi-stage digital decimation filter, which includes a sinc.sup.6 filter, a half-band linear phase FIR filter and a symmetric, linear phase, FIR filter and a digital compensation filter. The multi-stage decimation filter down-samples the output of a sigma-delta modulator by a factor of about 64. The compensation filter provides compensation for rolloff introduced by the multi-stage decimation filter.

Abstract: A method for detecting the angle of arrival at a receiver of ionizing radiation from a source of unknown specific activity at an unknown distance by using an active filter between the detector and source that varies the intensity of the radiation by a predetermine factor according to position and then comparing that value to an unshielded detector's value forming a geometric ratio to determine the angle of arrival of the radiation at the receiver in relation to a predetermined reference plane or line.

Abstract: Elongated, flexible radiography source assemblies are inserted into radiological cameras using an inserter apparatus into which the source assembly is dropped and which aligns the source assembly with two ports connected to a pair of tubes. The tubes are connected through a routing apparatus to the camera and a cable drive so that the source assembly can be driven from the inserter into the camera in the correct orientation.

Abstract: A computer monitoring system connects into the channel (24), serving as a link between a CPU (10) and peripheral devices (12), (14), (16). Channel signals are extracted in a channel interface module (18), altered to be compatible with the logic in a data collection module (20) and sent to a data collection module (20) along with event codes generated within the channel interface module (18) to indicate certain sequences and/or combinations of signals occurring on the channel (24). The data collection module (20) is programmable to select those peripheral devices it wants to monitor and the type of information to be collected. The data collection module (20) also includes circuitry for counting the number of successive search commands performed for a device without collecting the information contained therein for each command as well as circuitry for measuring the percentage of activity of each device and the channel as a whole.

Abstract: A practice putting green which is contourable relative to a reference surface to more closely approximate the actual surface of a putting green. The supporting surface, located beneath a resilient green-like covering, is divided up into plurality of planar sections fastened together by pieces of band steel attached to the undersides of the planar members, and spanning their abutting edges so as to allow the sections to move moderately relative to one another in a vertical direction. This surface in turn is supported by the reference surface and remote control elements are provided so that a wedge under the planar members may be moved in order to contour and decontour the surface.