Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7340968 | Back EMF measurement to overcome the effects of motor temperature change A motor torque measurement system includes a motor in communication with a gyro, a centrifuge rotor connected to the gyro, a housing surrounding the rotor and motor, and a controller in communication with the motor. The controller is connected to a back EMF measurem... | 03/11/2008 |
| 7055368 | Automatic calibration of an imbalance detector Methods and apparatus for a centrifuge control system, which are particularly suited for automatically calibrating a centrifuge imbalance detector that include an accelerometer and a controller. The controller is configured to automatically calibrate imbalance limit... | 06/06/2006 |
| 7051593 | Vibration testing apparatus and a method of vibration testing In order to provide a vibration testing apparatus which can have a large diameter without introducing undesirable rigid vibration modes, the vibration testing apparatus 1 comprises a support 2, at least one electromagnetic vibration generator 12... | 05/30/2006 |
| 6888073 | Vibration absorbing system of micro gravity rotating apparatus A substance mass measuring system is applied to a microgravitational rotating apparatus vibration control system to easily measure the mass of an object placed in an experimental box. Recess portions (10a, 10b) are provided in a casing ( | 05/03/2005 |
| 6408703 | Apparatus for carrying out a weight measurement in centrifuges An apparatus for carrying out a weight measurement in centrifuges for separating suspensions into their solid and liquid components comprises a machine housing, a drum rotatingly mounted in the machine housing and receiving the suspension, and a filler pi... | 06/25/2002 |
| 6286838 | Process and device for sealing a rotor for laboratory centrifuges A rotor assembly for a laboratory centrifuge includes a rotor body having a loading region encircled by an annular first bearing surface. A lid is configured to be removably secured to the rotor body so as to substantially cover the loading region. The li... | 09/11/2001 |
| 6062078 | Device for detecting an unbalance in a rotor of a centrifuge The invention relates to an unbalance detector, such as for a centrifuge. The invention preferably comprises a pressure-sensitive static sensor, preferably in the form of a piezoelectric cable, which preferably is mounted on a stationary casing part and d... | 05/16/2000 |
| 5767381 | Centrifuge model test apparatus A centrifuge model test apparatus is accommodated in a pit, and comprises a vertical rotary shaft, a rotary arm horizontally secured to the rotary shaft, a swing bucket suspended from and supported at a pin on the rotary arm and located near the end there... | 06/16/1998 |
| 4446716 | Self-compensating centrifuge arm A self-compensating centrifuge arm for use in a centrifuge system having drive means for causing rotation of the centrifuge arm around a center of rotation. The centrifuge arm comprises two elongated members, the first elongated member being attached to t... | 05/08/1984 |
| 4062241 | Apparatus for indicating the characteristic data of a centrifuge An apparatus is disclosed for providing a digital indication of characteristic data measurements of a centrifuge centrifugal head for examining the contents of test vessels, characterized by an indicator capable of showing directly, according to the adjus... | 12/13/1977 |
