Patents Assigned to Kendro Laboratory Products, Inc.
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Patent number: 7712320Abstract: A compressor is controlled by generating and storing a compressor operation log. In addition, a compressor operation is selected from the compressor operation log in response to a sensor failure. Furthermore, the compressor is modulated according to the selected compressor operation in response to the sensor failure.Type: GrantFiled: February 15, 2005Date of Patent: May 11, 2010Assignee: Kendro Laboratory Products, Inc.Inventors: Richard H. Bair, III, Bryan M. Elwood
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Patent number: 7055368Abstract: 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 limits. Upon determining these limits, the controller assigns these limits or values to the accelerometer.Type: GrantFiled: May 20, 2003Date of Patent: June 6, 2006Assignee: Kendro Laboratory Products, Inc.Inventors: Harvey Schneider, David M. Carson
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Patent number: 7048511Abstract: A method and apparatus which provides a pressure sensor and/or temperature sensor connected to the low pressure side of a refrigeration system, or the discharge line of a scroll compressor. When the scroll compressor rotates backward, the change of pressure or temperature immediately sends a signal to work with a time-delay relay and a normally closed relay to immediately cut off the electrical power supply to the compressor. Thus, causing the scroll compressor to stop rotating in the undesirable direction.Type: GrantFiled: February 22, 2005Date of Patent: May 23, 2006Assignee: Kendro Laboratory Products, Inc.Inventor: Chuan Weng
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Patent number: 7019656Abstract: An apparatus and method for notifying a user of a pending empty gas supply tank. The user can input the initial volume of the gas supply tank, a gas monitor can monitor the amount of gas that was injected into the chamber and an indicator can notify the user when the gas volume of the supply tank is at or below a predetermined level so that the user can take the appropriate action. Additionally, a gas volume converter can be included to convert from one volume unit to another.Type: GrantFiled: August 6, 2002Date of Patent: March 28, 2006Assignee: Kendro Laboratory Products, Inc.Inventors: Richard H. Bair, III, Bryan M. Elwood
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Patent number: 6893227Abstract: A method and apparatus which provides a pressure sensor and/or temperature sensor connected to the low pressure side of a refrigeration system, or the discharge line of a scroll compressor. When the scroll compressor rotates backward, the change of pressure or temperature immediately sends a signal to work with a time-delay relay and a normally closed relay to immediately cut off the electrical power supply to the compressor. Thus, causing the scroll compressor to stop rotating in the undesirable direction.Type: GrantFiled: March 21, 2002Date of Patent: May 17, 2005Assignee: Kendro Laboratory Products, Inc.Inventor: Chuan Weng
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Patent number: 6868688Abstract: A method and apparatus for accessing low temperature refrigeration systems is provided. In one embodiment, an access tunnel is provided and a heater, an access door, a vacuum insulation panel, a thermal break, a sealing gasket that mates with a sealing surface together or in part(s) helps to prevent condensation from forming on the exterior of the freezer.Type: GrantFiled: January 21, 2003Date of Patent: March 22, 2005Assignee: Kendro Laboratory Products, Inc.Inventor: Abraham C. Narehood
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Patent number: 6831564Abstract: An apparatus for notifying a user when the gas pressure of a gas is at or below a threshold pressure. The gas can be injected into a chamber of an incubator. The gas pressure can be measured, relayed and compared to the threshold pressure. If the gas pressure is at or below the threshold pressure, the user will be notified that the gas pressure needs to be corrected.Type: GrantFiled: June 11, 2002Date of Patent: December 14, 2004Assignee: Kendro Laboratory Products, Inc.Inventors: Richard H. Bair, III, Bryan M. Elwood
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Patent number: 6805172Abstract: An apparatus and method for compensating gas loss in an incubator. A transducer can be used to monitor the gas pressure of various gases that flow into the incubator. By knowing the correct pressure that flows into the chamber, a faster and more accurate compensation can be done during enhancement or depletion of the gases in the incubator.Type: GrantFiled: September 6, 2002Date of Patent: October 19, 2004Assignee: Kendro Laboratory Products, Inc.Inventors: Bryan M. Elwood, Richard H. Bair, III
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Patent number: 6802803Abstract: 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 within the knob and housing. In addition, the apparatus has a first moveable element that is retained within a passage located on the housing and a biasing element located within the housing.Type: GrantFiled: April 22, 2002Date of Patent: October 12, 2004Assignee: Kendro Laboratory Products, Inc.Inventor: Raymond Gary Potter
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Patent number: 6779787Abstract: A table having a two-part table top, wherein each part is independently pivotable, and a base which can double as a lift mechanism for raising and lowering the table top. The table top is useful for rotating heavy objects during manufacture to access the underside of the objects for installation of components. The table top can also be raised and lowered allowing installation of components without resort to a stepladder.Type: GrantFiled: December 19, 2001Date of Patent: August 24, 2004Assignee: Kendro Laboratory Products, Inc.Inventors: Wayne Gryder, Steve Haney
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Publication number: 20040045624Abstract: An apparatus and method for compensating gas loss in an incubator. A transducer can be used to monitor the gas pressure of various gases that flow into the incubator. By knowing the correct pressure that flows into the chamber, a faster and more accurate compensation can be done during enhancement or depletion of the gases in the incubator.Type: ApplicationFiled: September 6, 2002Publication date: March 11, 2004Applicant: Kendro Laboratory Products, Inc.Inventors: Bryan M. Elwood, Richard H. Bair
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Publication number: 20030219907Abstract: An apparatus for notifying a user which gas tank(s) to connect to an enclosed chamber such as an incubator. The user inputs the desired setpoints for gasses such as O2 and CO2, and the corresponding gas level is determined. The determined gas level is compared with the setpoint of the gas and can display, which gas tank(s) should be hooked up to chamber.Type: ApplicationFiled: May 22, 2002Publication date: November 27, 2003Applicant: Kendro Laboratory Products, Inc.Inventors: Richard H. Bair, Bryan M. Elwood
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Publication number: 20030197454Abstract: A floating mullion that includes a bracket which is designed to be used when two interior doors are used to close off a desired chamber from ambient. The bracket is specially designed to close off the natural gap between the doors. This bracket will allow the opening and sealing of the inner doors without the need for a fixed mullion. The bracket is not limited to sealing two door chambers but may be used on multiple chambers as well.Type: ApplicationFiled: April 23, 2002Publication date: October 23, 2003Applicant: Kendro Laboratory Products, Inc.Inventor: Ralph Markey
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Publication number: 20030199378Abstract: A method and apparatus is disclosed for setting energy saver sleep modes for use in a centrifuge systems. The centrifuge system contains an energy saver touch screen control which can be either manually set or automatically set to turn the centrifuge on or off at predetermined times. This allows the centrifuge system to be readily available to a user, resulting in lower wear and tear being placed on the major systems of the centrifuge and waste less energy.Type: ApplicationFiled: April 9, 2003Publication date: October 23, 2003Applicant: Kendro Laboratory Products, Inc.Inventor: Vincent Saviano
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Publication number: 20030180148Abstract: A method and apparatus which provides a pressure sensor and/or temperature sensor connected to the low pressure side of a refrigeration system, or the discharge line of a scroll compressor. When the scroll compressor rotates backward, the change of pressure or temperature immediately sends a signal to work with a time-delay relay and a normally closed relay to immediately cut off the electrical power supply to the compressor. Thus, causing the scroll compressor to stop rotating in the undesirable direction.Type: ApplicationFiled: March 21, 2002Publication date: September 25, 2003Applicant: Kendro Laboratory Products, Inc.Inventor: Chuan Weng
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Publication number: 20030136141Abstract: A method and apparatus for accessing low temperature refrigeration systems is provided. In one embodiment, an access tunnel is provided and a heater, an access door, a vacuum insulation panel, a thermal break, a sealing gasket that mates with a sealing surface together or in part(s) helps to prevent condensation from forming on the exterior of the freezer.Type: ApplicationFiled: January 21, 2003Publication date: July 24, 2003Applicant: Kendro Laboratory Products, Inc.Inventor: Abraham C. Narehood
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Patent number: 6557358Abstract: Methods and apparatus for non-hydrocarbon design of ultra-low temperature refrigeration systems, which are particularly suited a non-hydrocarbon ultra-low temperature refrigeration system that can safely be transported and applied in the field as needed without the risks associated with hydrocarbon ultra-low temperature refrigeration system are disclosed. An application of the non-hydrocarbon design of ultra-low temperature refrigeration system method and apparatus to freezers and the like is also disclosed.Type: GrantFiled: December 17, 2001Date of Patent: May 6, 2003Assignee: Kendro Laboratory Products, Inc.Inventors: Chuan Weng, Allan Kelly
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Patent number: 6518059Abstract: A laboratory microplate incubator (10) including a housing (12) having a specially-sized, enclosed incubation chamber (24) therein and a temperature control assembly (14) that uniformly maintains the temperature within the incubator in a desired range. The temperature control assembly includes a heater (34) positioned within the housing for heating the chamber, a temperature sensor (38) and a controller (36). Multiple incubation chambers can be electrically controlled by the temperature control assembly in a master incubator. Multiple incubation chambers can be stacked to conserve laboratory space. An externally fillable water reservoir is provided inside the chamber.Type: GrantFiled: October 11, 2000Date of Patent: February 11, 2003Assignee: Kendro Laboratory Products, Inc.Inventor: Charles G. Butts
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Publication number: 20030010042Abstract: Methods and apparatus for non-hydrocarbon design of ultra-low temperature refrigeration systems, which are particularly suited a non-hydrocarbon ultra-low temperature refrigeration system that can safely be transported and applied in the field as needed without the risks associated with hydrocarbon ultra-low temperature refrigeration system are disclosed. An application of the non-hydrocarbon design of ultra-low temperature refrigeration system method and apparatus to freezers and the like is also disclosed.Type: ApplicationFiled: December 17, 2001Publication date: January 16, 2003Applicant: Kendro Laboratory Products, Inc.Inventors: Chuan Weng, Allan Kelly
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Patent number: 6493924Abstract: 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 the position of the rotor and means for selectively configuring the first, second and third windings of the stator in a wye connection when the speed of the motor is less than a predetermined value and configuring the windings in a delta connection when the speed of the motor is greater than the predetermined value.Type: GrantFiled: December 2, 2000Date of Patent: December 17, 2002Assignee: Kendro Laboratory Products, Inc.Inventor: A. Kumar Das