Abstract: A rotary finishing device including a generally circular hub having an inner periphery and an outer periphery. The outer periphery includes a plurality of slots formed thereabout, which are defined by a pair of side portions. The plurality of slots are generally uniformly spaced about the outer periphery of the hub. Each of the slots has at least one finishing sheet secured therein by an adhesive.

Abstract: An amplifier redundancy system includes an amplifier receiving signals from a first input switch when the switch is in a side port position. The system further includes a first output switch, in a side port position, receiving signals from the amplifier. A second amplifier receives signals from the first input switch through a second input switch and generates amplified signals therefrom. The second input switch also receives signals from the first input switch when the first input switch is in the side port position. The first input switch is initially in the side port position but switches to a through port position in response to a failure in the second amplifier. A second output switch is in a through port position and switches to a side port position and receives signals through the first output switch in response to the failure in the second amplifier.

Abstract: An arc gage (30) includes a non-electrically conductive housing (42) and a first electrically conductive pin (44) that is disposed therein. The first pin (44) has a first end (44A) disposed within the housing (42) and a second end (44B) disposed outside the housing (42). A second electrically conductive pin (46) that has a third end (46A) within the housing (42) and spaced apart from the first end (44A) forms a gap (52) therebetween. A fourth end (46B) of the second electrically conductive pin (46) is disposed outside the housing (42). The arc gage (30) may be a stand alone device or used as part of a spark checking device that includes a device housing a voltage generator and a wand (26) that is electrically coupled to the power terminal of a voltage generator (34) disposed within the device housing (28).

Abstract: A lacrosse head (10) with a substantially narrow pocket and lower manufacturing costs is provided. In one embodiment, this lacrosse head (10) includes a one-piece integral frame element (18) comprised of a base portion (24), a pair of sidewalls (20) diverging from the base portion (24), and a scoop portion (22) connecting the sidewalls (20) opposite the base portion (24). This lacrosse head (10) further includes a pair of flaps (12) coupled to the sidewalls (20) by an overmolding process. These flaps (12) extend inwardly and rearwardly from their respective sidewalls (20) toward a centerline (26) of the lacrosse head (10). Each flap (12) has a series of holes (28) formed therein for receiving a netting (14) and attaching the netting (14) thereto. As a result, these flaps (12) narrow the width of the pocket and decrease lateral ball movement within the lacrosse head (10).

Abstract: A dual capacitance accelerometer system includes two flexure plates coupled to the housing and defining a respective parallel flex axes. A fixed plate is adjacent to and in substantially parallel relation to the two flexure plates and is also coupled to the housing. The fixed plate and one of the flexure plates define a first distance and the fixed plate and the other flexure plate define a second distance. The first and second distances vary in response to acceleration forces acting upon the flexure plates.

Abstract: A lacrosse head for use with a lacrosse handle includes a frame element including an arcuate wall, a scoop opposing the arcuate wall, and a pair of opposing sidewalls. The sidewalls generally extend between the arcuate wall and the scoop. The frame element has a socket extending rearwardly therefrom for receipt of a handle therein. The lacrosse head has a plurality of net attachment means formed therein for attachment of lacrosse net thereto. The lacrosse head has a pocket area defined by a lower portion of the arcuate wall, the scoop, and a lower portion of each of the pair of opposing sidewalls. The lacrosse head also has a catching area defined by an upper portion of the arcuate wall, the scoop, and an upper portion of each of the pair of opposing sidewalls. The catching area of the head is larger than the pocket area.

Abstract: A lacrosse goalie stick head (10) for attachment to a lacrosse stick. The lacrosse goalie stick head (10) comprises a traverse top wall (12) connected to a first sidewall (14) and a second sidewall (16). The first sidewall (14) has a first flange (36) and the second sidewall (16) has a second extending flange (38). The first and second sidewalls extend away from the top traverse wall (12), converge toward a base (19), and connect to the base (19). The base (19) has a throat portion 18 having a female end socket (23) for attachment to the lacrosse stick. The top traverse wall (12), the first sidewall (14), the second sidewall (16), and the base (19) form the lacrosse goalie stick head (10). The lacrosse goalie stick head (10) increases a goaltender's control in the deflection and receiving of lacrosse balls.

Abstract: An imaging method for an MRI system includes identifying a low signal region within a scanning volume. An overlap calculation of the scanning volume is generated. The low signal region is substantially eliminated from the overlap calculation thereby generating an adjusted overlap structure. A SENSE calculation is generated in response to the adjusted overlap structure.

Abstract: A guidance system includes a first laser device coupled to a mount, the first laser device adapted to generate a first laser signal having a first wavelength. A second laser device is also coupled to the mount and directed substantially parallel with the first laser device. The second laser device is adapted to generate a second laser signal having a second wavelength. A first photodiode is adapted to detect the first laser signal, retro-reflected from a first wavelength matched section of a reflector system, and the second laser, signal retro-reflected from a second wavelength matched section of the reflector system. The first photodiode is adapted to generate a first photodiode signal therefrom.

Abstract: A capacitance acceleration derivative detector includes a housing, and a first plate fixed within the housing. A second plate is also fixed within the housing and spaced apart from and in parallel relation to the first plate. A flexure plate is disposed between and in substantially parallel relation to the first and second plates. The flexure plate is coupled to the housing along at least an edge. The flexure plate and first plate define a first distance and the flexure plate and the second plate define a second distance. The first and second distances vary in response to acceleration forces acting upon the flexure plate. The flexure plate and the first fixed plate generate a first charge displacement capacitance signal, and the second fixed plate and the flexure plate generate a second charge displacement capacitance signal.

Abstract: A lacrosse head for use with a lacrosse handle includes a frame element including an arcuate wall, a scoop opposing the arcuate wall, and a pair of opposing sidewalls. The sidewalls generally extend between the arcuate wall and the scoop. The frame element has a socket extending rearwardly therefrom for receipt of a handle therein. The lacrosse head has a plurality of net attachment means formed therein for attachment of lacrosse net thereto. The lacrosse head has a pocket area defined by a lower portion of the arcuate wall, the scoop, and a lower portion of each of the pair of opposing sidewalls. The lacrosse head also has a catching area defined by an upper portion of the arcuate wall, the scoop, and an upper portion of each of the pair of opposing sidewalls. The catching area of the head is larger than the pocket area.

Abstract: An ultrasonic transducer assembly for helping monitor a fluid flowing through a duct is disclosed herein. The assembly includes: (1) a piezoelectric transducer element having a first contact surface electroplated with a first metallic film layer and an opposite second contact surface electroplated with a second metallic film layer; (2) a housing, configured on and at least partially conterminous with the outer surface of the duct, having a chamber in which the piezoelectric transducer element is situated and thereby substantially enclosed; and (3) means for conducting electrical signals between the electroplated first contact surface of the piezoelectric transducer element and the outside of the housing. In the assembly, the electroplated second contact surface of the piezoelectric transducer element is solder-mounted within the housing such that the piezoelectric transducer element is thereby coupled to the outer surface of the duct in a substantially conterminous fashion.

Abstract: An accelerometer includes an inertial platform maintaining an attitude in response to a platform stabilizing controller signal and defining a spin axis and a reference plane. An accelerometer, coupled to the inertial platform a distance from the spin axis, defines a flex axis, which is perpendicular to the stability axis. The accelerometer generates an accelerometer signal in response to acceleration of the accelerometer. A second accelerometer defines a second flex axis also perpendicular to the stability axis, and is also coupled to the inertial platform a distance from the spin axis. The second accelerometer generates a second accelerometer signal in response to acceleration of the second accelerometer. A controller, including an angular acceleration signal generator, receives the first accelerometer signal and the second accelerometer signal and generates an angular acceleration signal from a difference in amplitudes between the first accelerometer signal and the second accelerometer signal.

Abstract: An accelerometer system includes a rigid plate system coupled to an inertial platform. A first flexure plate defines a first flex axis and is adjacent to the rigid plate system a first distance from the spin axis. The first flexure plate generates a first frequency signal in response to acceleration of the first flexure plate. A second flexure plate defines a second flex axis and is adjacent to the rigid plate system a second distance from the spin axis. The second flexure plate generates a second frequency signal in response to acceleration of the second flexure plate. A controller including receives the first frequency signal and the second frequency signal and generates an angular acceleration signal from a difference of the first frequency signal and the second frequency signal. The controller also generates a linear acceleration signal in response to an average of the first frequency signal and the second frequency signal.

Abstract: A positive lock pin for locking a plurality of objects together includes an upper housing in communication with a handle housing. The handle housing has a shaft member located therein. The shaft member is rotatable with respect to the handle housing and has a slot formed in an upper portion thereof. The shaft member also has a pair of recesses formed therein. The shaft member is in communication with a pair of retention mechanisms disposed within the handle housing. Each of the pair or retention mechanisms is in communication with a respective opening formed in the handle housing. The pair of retention mechanisms are moveable between a locked position where an outermost point thereof extends outwardly from a respective opening and an unlocked position wherein the outermost point does not extend outwardly from the respective opening and a respective retention mechanism rests in one of the recesses. The movement of the retention mechanisms occurs upon rotation of the slot and the shaft member.

Abstract: An imaging system includes an x-ray source coupled to a gantry. The x-ray source generates an x-ray flux, wherein a portion of the x-ray flux becomes scatter radiation. A scatter detector is also coupled to the gantry to receive the scatter radiation. The scatter detector generates a scatter signal in response to the scatter radiation, and a host computer receives the scatter signal.

Abstract: An aircraft engine mounting installation uses an overall partially focalized or convergent mount configuration with a combination of individual, or paired, axial mounts and individual, or paired, inclined mounts. When paired, the axial mount axes are parallel to the engine thrust axis. The respective axes of the axial and inclined mounts, or planes through paired similar mounts, converge at, or ahead of, the engine center of gravity in order to brace engine weight, engine thrust and torque reaction loads, without undue complexity in mount geometry.

Abstract: An iris includes a stator assembly having a frame coupled to an electrically wound, substantially annular magnetic core. The iris further includes a rotor, which is rotatably coupled to the magnetic core such that a channel is defined. A diaphragm, having a plurality of diaphragm leaves, is coupled to the stator assembly. The diaphragm leaves are pivotally arranged to form an adjustable aperture, which is substantially concentric with the channel. A portion of at least one of the diaphragm leaves is coupled to the stator assembly, and another portion of at least one of the plurality of diaphragm leaves is coupled to the rotor.

Abstract: A control circuit (20) for controlling electrostatic discharge in an electric component includes a heater (28) that is thermally coupled to the component. A sensor (30) is used for sensing a sensed condition. A controller is coupled to the heater and the sensor. The controller (24) heats the component in response to the sensed condition. The sensor (30) may include an electron flux level near the component or a surface potential of the component itself.

Abstract: A flexure plate dual capacitance accelerometer system includes a flexure plate fixed having edges fixed to a housing structure. A first fixed plate is coupled to the housing structure a distance from one side of the flexure plate. A second fixed plate is coupled to the housing structure a distance from the other side of the flexure plate and disposed substantially parallel with the first fixed plate. The two fixed plates and the flexure plate form dual capacitors, one on each side of the flexure plate. The flexure plate flexes in response to acceleration, thereby altering the two distances and generating phase shift capacitance signals from the dual capacitors.