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| Number | Title | Issue Date |
| 6954717 | Device for determining and/or monitoring a process variable The invention relates to a device for determining and/or monitoring a process variable. The aim of the invention is to provide a cost-effective, user-friendly device for determining and/or monitoring a process variable. The inventive device comprises the following e... | 10/11/2005 |
| 6520013 | Method and apparatus for detecting free fall A data processing system including a data storage device having data stored on a data storage medium. Within said data processing system, a system electronics is operatively coupled to a sensor and to said data storage device. When the sensor senses a cha... | 02/18/2003 |
| 5594168 | Vibration control apparatus having oscillation frequency regulation A vibration control apparatus that can impart self-induced vibration by stabilizing the vibrator at a frequency in near agreement with its mechanical resonance frequency vibration fs is provided. A vibrator has a pair of piezo-electric elements... | 01/14/1997 |
| 5117695 | Vibration attenuation assembly The present invention features a vibration attenuation assembly designed for the protection of single axis instruments such as accelerometers. The assembly includes an inner cylinder housing one or more single axis accelerometers co-aligned with a princip... | 06/02/1992 |
| 4875171 | Wheel speed control system incorporating in-gear vibration detection and elimination means A wheel speed control system incorporating in-gear vibration detection and elimination means for use in a vehicle includes wheel speed detectors for detecting the speed of a wheel, a wheel speed control section such as an antiskid control and/or brake tra... | 10/17/1989 |
| 4315434 | Pulse width modulation (PWM) with jewel pivot accelerometer The output of the accelerometer is sent to a pulse width modulating digitng circuitry which consists of a comparator to generate the PWM signal, a flip-flop steering circuit, an "H" switch to toggle the torquer constant current either positive or negativ... | 02/16/1982 |
