Abstract: A computer security device for protecting sensitive data stored in nonvolatile memory in a computer includes: an overvoltage generator comprising a high-voltage supply charging a capacitor through a resistor, wherein the capacitor is in electronic communication with the nonvolatile memory of the computer through a silicon-controlled rectifier; and a controller operable to receive a signal and in electronic communication with the overvoltage generator, wherein the controller is operable to produce a destruct signal. The generator is operable to apply an over-voltage condition to the nonvolatile memory of the computer through the silicon-controlled rectifier upon receiving the destruct signal from the controller.

Abstract: A computer security device for protecting sensitive data stored in nonvolatile memory in a computer includes: an overvoltage generator comprising a high-voltage supply charging a capacitor through a resistor, wherein the capacitor is in electronic communication with the nonvolatile memory of the computer through a silicon-controlled rectifier; and a controller operable to receive a signal and in electronic communication with the overvoltage generator, wherein the controller is operable to produce a destruct signal. The generator is operable to apply an over-voltage condition to the nonvolatile memory of the computer through the silicon-controlled rectifier upon receiving the destruct signal from the controller.

Abstract: A computer security environment that delays physical access to a computer system, detects intrusion attempts upon that computer system, using one or more intrusion sensors that each detects an intrusion condition, and finally destroys nonvolatile memory within the computer system to deny access to sensitive data stored within the nonvolatile memory upon detection of an intrusion. The system supports selection of an intrusion profile defining the intrusion conditions armed to detect an intrusion and destroy the nonvolatile memory.

Abstract: A computer security environment that delays physical access to a computer system, detects intrusion attempts upon that computer system, using one or more intrusion sensors that each detects an intrusion condition, and finally destroys nonvolatile memory within the computer system to deny access to sensitive data stored within the nonvolatile memory upon detection of an intrusion. The system supports selection of an intrusion profile defining the intrusion conditions armed to detect an intrusion and destroy the nonvolatile memory.

Abstract: An alignment system having an angular position sensing device using an accelerometer to determine the angular position of the device. Preferably, the angular position sensing device incorporates two dual-axis accelerometers oriented in a spaced apart relation for determining the angular position of a rotating body in space. The angular position sensing device is operable to account for centrifugal and angular acceleration errors due to the rotation of the rotating body in space, thereby providing an accurate angular position of the rotating body. The angular position sensor also determines the angular position of the rotating body based on a sensing axis having the greatest range of sensitivity according to the angular position of the rotating body.

Abstract: A rotary viscometer is described where there is no mechanical linkage between a rotor that is rotated in a test fluid to measure viscosity and the rotor drive source. A rotor is disposed in a test fluid within a test chamber. The rotor is mounted on low friction bearings. Electromagnets disposed around the test chamber impose a constant torque on the rotor. Rotor rotation rate corresponding to fluid viscosity is measured. The viscometer may have a sealed test chamber for measuring viscosity of hazardous or corrosive test fluids without exposing the operator to the fluid.

Abstract: A rotary viscometer is described where there is no mechanical linkage between a rotor that is rotated in a test fluid to measure viscosity and the rotor drive source. A rotor is disposed in a test fluid within a test chamber. The rotor is mounted on low friction bearings. Electromagnets disposed around the test chamber impose a constant torque on the rotor. Rotor rotation rate corresponding to fluid viscosity is measured. The viscometer may have a sealed test chamber for measuring viscosity of hazardous or corrosive test fluids without exposing the operator to the fluid.

Abstract: An adapter for an orbiting object viscometer that extends the practical measurement range of such viscometer type to lower viscosity fluids and improves the measurement accuracy. A baffle means disposed in the test fluid reduces whirlpooling, which occurs in low useful viscosity fluids, to extend the viscosity measurement range to lower viscosity fluids. A temperature sensor disposed in the test fluid increases the accuracy of the viscosity measurements by providing more accurate fluid temperature to the processor calculating the viscosity. The advantages of the orbiting object viscometer such as rapid viscosity measurements and the ability to measure the viscosity of hazardous or corrosive fluids are maintained through the design of the adapter providing support for a single vane baffle or compound vane baffle immersed into the fluid, which adaptor is designed and mounted to ensure that the baffle carefully avoids the path of the orbiting object within same fluid.

Abstract: A viscosity tester includes a free standing magnetic object disposed in fluid in a stationary receptacle. A magnetic force drives the object in an orbit and the magnetic force, the speed of the object and the lag angle between the magnetic field and the object are either measured or controlled and, based on at least one of these three parameters, the viscosity of the fluid is determined. In one embodiment, a magnetic ball is driven by four electromagnets, with proximity sensors detecting the presence of the ball and controlling the electromagnets. In another embodiment, a free standing magnet is driven in an orbital pattern by a rotating field that is coaxial with the orbital pattern and is produced by a rotating magnet or a stator.

Abstract: A measuring and processing electronic circuit for measuring and visually displaying digitally the horsepower per cylinder selected for a reciprocating engine. Proximity sensors relate the rotation of cylinder by way of the fly-wheel and the crank shaft, to r.p.m. of the engine, and instantaneous position of the cylinder in the stroke. There is also provided a representative pulse for each degree through 360.degree. of the revolution of the flywheel. A pressure transducer is mechanically linked to each cylinder in the engine. A selector switch selects which cylinder's horsepower is to be measured. In arriving at horsepower per cylinder the pressure measurement is multiplied against a volume signal for each degree through the revolution. The resultants for each degree are summed and multiplied against r.p.m. measurement for horsepower per cylinder.