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| Number | Title | Issue Date |
| 7458928 | Centrifuge energy management system and method A method and apparatus for a centrifuge energy management system prevents the energy level of a rotor from exceeding a predetermined containment limit for the centrifuge by monitoring the energy level and either terminating a run operation of the centrifuge if it su... | 12/02/2008 |
| 7166978 | Motor temperature sensor system and method to determine motor performance An electric motor system includes an electric motor, a temperature sensor mounted therein capable of measuring a local temperature and generating a temperature related signal, and a processor configured to calculate an actual temperature of a rotor magnet from the t... | 01/23/2007 |
| 7137262 | Supplemental heat control apparatus and method for freezer/refrigeration equipment A method and apparatus that provides supplemental heat from a heat source based upon the operating environment of a refrigeration or freezer. The supplemental heat is automatically controlled to provide heating to a sealing area to prevent condensation from forming.... | 11/21/2006 |
| 7093460 | Cooling circuit apparatus and method A cooling circuit through which coolant flows, for use with a refrigerated cabinet. The cooling circuit includes a compressor and a condenser with a flow path extending there between. The cooling circuit also includes an evaporator and a second flow path that extend... | 08/22/2006 |
| 7081081 | Bayonet coupling mechanism for a centrifuge A centrifuge having a motor shaft, a rotor that engages the motor shaft and a cover for securing the rotor to the rotor shaft. The cover has a knob with a coupling disposed therein. The coupling functions to simultaneously secure the rotor cover to the rotor body an... | 07/25/2006 |
| 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 |
| 7011618 | Attachment and release apparatus for a centrifuge rotor cover An attachment and release apparatus for attaching a rotor to a centrifuge drive assembly and for attaching a cover to the rotor. The apparatus includes a knob, a cover wherein the knob has a plunger disposed therein. The apparatus also includes an adapter having det... | 03/14/2006 |
| 6990819 | Dryer system for the prevention of frost in an ultra low temperature freezer A dryer system for frost prevention in an ultra low temperature freezer includes a passive port coupled to an air dryer apparatus. ... | 01/31/2006 |
| 6981304 | Cover attachment method A rotor cover attach and release apparatus for use with a centrifuge. The apparatus includes a knob, a cover and housing that are both affixed to the knob. The apparatus also includes an adapter having detents pitched at an angle, that is connected to the housing al... | 01/03/2006 |
| 6978513 | Method and apparatus for stopping a moving member A system and method for stopping a moving member located on a stationary member. The system includes sliders or rollers configured to move along a track. The track has a discontinuity to move the moving member to engage a friction pad to slow the moving member. The ... | 12/27/2005 |
| 6943509 | Rotor speed control device and method Kinetic energy of a rotor is substantially prevented from exceeding a predetermined amount of kinetic energy by determining a first kinetic energy of the rotor spinning at a first rotational velocity and determining whether the first kinetic energy exceeds the prede... | 09/13/2005 |
| 6908224 | Temperature sensor pre-calibration method and apparatus A centrifuge temperature pre-calibration apparatus including a memory storage device having correction coefficients for temperature, a controller, an un-calibrated temperature sensor and a calibrated temperature display device connected to a computer which based on ... | 06/21/2005 |
| 6845628 | Method and apparatus for temperature control in a refrigeration device A temperature control device including a temperature sensor which senses a temperature at a specified location within the refrigeration apparatus. The temperature control device has first flow valve that is operable to selectively increase or decrease the flow of re... | 01/25/2005 |
| 6845632 | Cooling circuit apparatus and method A cooling circuit through which coolant flows, for use with a refrigerated cabinet. The cooling circuit includes a compressor and a condenser with a flow path extending there between. The cooling circuit also includes an evaporator and a second flow path that extend... | 01/25/2005 |
| 6843100 | Thermal conductivity measurement of carbon dioxide gas with relative humidity and temperature compensation A carbon dioxide gas measurement and control system and method which comprises a thermal conductivity absolute humidity sensor which measures carbon dioxide during dynamic temperature and humidity changes by isolating the particular sensor response for absolute humi... | 01/18/2005 |
| 6802803 | Cover attachment apparatus A rotor cover attach and release apparatus for use with a centrifuge. The apparatus includes a knob, a cover and housing that are both affixed to the knob. The apparatus also includes an adapter that is connected to the housing along with a plunger that is disposed ... | 10/12/2004 |
| 6802347 | Electronic fill for water jacketed incubators An apparatus and method is provided to fill liquids in a water jacket of an enclosed chamber. A valve, such as a solenoid can be actuated remotely to open and allow liquids to fill the water jacket. A sensor, such as a fill level sensor can sense and can communicate... | 10/12/2004 |
| 6800053 | Method and apparatus for sterilizing internal passages of a centrifuge centrate gate Method and apparatus for sterilization of laboratory equipment, which are particularly suited for sterilization of internal passages of a centrifuge centrate gate assembly. ... | 10/05/2004 |
| 6776751 | Rotor cover attachment apparatus A centrifuge rotor cover attachment and release apparatus for automatic attachment and quick release. The apparatus has a knob with a bore extending therethrough with a cover connected to the knob. The apparatus additionally includes a housing having a passage. The ... | 08/17/2004 |
| 6764438 | Cover attachment apparatus A rotor cover attach and release apparatus for use with a centrifuge. The apparatus includes a knob, a cover and housing that are both affixed to the knob. The apparatus also includes an adapter having detents pitched at an angle, that is connected to the housing al... | 07/20/2004 |
| 6747427 | Motor torque control to reduce possibility of centrifuge rotor accidents Controlling the torque of a motor by driving a centrifuge rotor connected to the motor; increasing a motor torque of the motor to a specified level; detecting revolutions per minute of the centrifuge rotor; adjusting the motor torque based on detected revolutions pe... | 06/08/2004 |
| 6723238 | Blood centrifuge cup having a replaceable compartment for filter support A centrifuge bucket, for holding a first article, further comprises a compartment for holding a second article, and an arrangement for securing the compartment to an outer surface of the centrifuge bucket. ... | 04/20/2004 |
| 6680997 | System and method for enabling a high torque/high speed brushless DC motor A high torque/high speed brushless DC motor system for controlling both the speed and torque of the motor including a rotor and a stator, the stator of the motor including a first, second and third winding. The system further includes means for sensing th... | 01/20/2004 |
| 6679820 | Method for energy management and overspeed protection of a centrifuge There is provided a method for limiting an operating speed of a rotor installed in a centrifuge system. The method includes the steps of (a) determining whether an actual change in energy required to accelerate the rotor from a first speed to a second spe... | 01/20/2004 |
| 6665924 | Centrifuge having a spring-loaded nut for securing a rotor to a drive cone A method and apparatus for securing a rotor to a drive cone in a centrifuge includes positioning a rotor upon a drive cone and providing a nut movable in an axial direction in the drive cone. A screw passing through a region of the rotor engages the nut, ... | 12/23/2003 |
| 6638203 | Centrifuge rotor shaft vertical displacement restriction device with angular deflection capability In a centrifuge comprising a drive shaft assembly, a diaphragm disposed about the drive shaft assembly reduces noise and vibration. The diaphragm permits the drive shaft assembly to pivot off a vertical axis while substantially limiting horizontal displac... | 10/28/2003 |
| 6616590 | Low-shear feeding system for use with centrifuges There is provided a centrifugal separator for solid-liquid separations. The centrifugal separator comprises (a) an accelerator rotatable at an angular velocity, ω about an axis, and having an inside surface with a point on the axis, and (b) a nozzle for ... | 09/09/2003 |
| 6368265 | Method and system for energy management and overspeed protection of a centrifuge A method for limiting an operating speed of a centrifuge rotor includes the steps of determining whether an actual parameter value of the rotor is within a predetermined range of an expected parameter value of the rotor, and limiting the operating speed w... | 04/09/2002 |
| 6354988 | Centrifuge gyro diaphragm capable of maintaining motor shaft concentricity In a centrifuge comprising a rotor shaft assembly, a diaphragm disposed about the rotor shaft assembly reduces noise and vibration. The diaphragm permits the rotor shaft assembly to pivot off a vertical axis while substantially limiting horizontal displac... | 03/12/2002 |
| 6350225 | Support bridge for preventing centrifugal forces from collapsing a container placed in a centrifuge rotor A container assembly having a support bridge to prevent centrifugal forces from collapsing the container. A lid is positioned on top of the container, and the support bridge is disposed between the lid and an upper portion of the container.... | 02/26/2002 |
