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| 20090301321 | Laser Alignment device comprising plunger - According to various embodiments, the present teachings relate to an alignment device, method, and system for aligning an upper platen of a paperboard press with a lower platen of a paperboard press. The alignment device can comprise a latching collar adapted to be mounted on a lower platen. The latching collar can comprise a central hole and can be adapted to be mounted on or affixed to the lower platen. The latching collar can comprise a locking area. The alignment device can further comprise a plunger unit. The plunger unit can comprise a housing, a securing device attached to the housing, and a plunger configured for reciprocal motion through the housing. The securing device can be adapted to removably secure the housing to a top surface of an upper platen of a paperboard press. The alignment device can further comprise a biasing device for normally biasing the plunger in a retracted position with respect to the housing yet permitting the plunger to be pushed partially through the housing to attain an extended position. | 12-10-2009 |
| 20110232438 | Lifting Device for Stripping and Blanking Operations - A deflectable lifting device can be mounted to a support form, work surface or other member of a material conveyance system. According to embodiments, the deflectable lifting device can have a base that mounts into the support, and a bendable arm arranged in the pathway of a material conveyance system, such as a paper stripping or paper blanking work station. When a sheet or web of material travels over the deflectable lifting device, the bendable arm can bend and deflect downwards, but still contact the sheet or web with a gently humped or arcuate portion, providing a small margin of elevation or lift to the sheet or web. The sheet or web can therefore be elevated above edges, holes, or other obstructions in the pathway that could jam or snag the delivery of the material. The deflectable lifting device can comprise an arcuate portion or head over which the sheet or web can slide in a bearing fashion. | 09-29-2011 |
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| 20090248349 | MICROFLUIDIC DEVICES WITH INTEGRATED RESISTIVE HEATER ELECTRODES INCLUDING SYSTEMS AND METHODS FOR CONTROLLING AND MEASURING THE TEMPERATURES OF SUCH HEATER ELECTRODES - The invention relates to methods and devices for control of an integrated thin-film device with a plurality of microfluidic channels. In one embodiment, a microfluidic device is provided that includes a microfluidic chip having a plurality of microfluidic channels and a plurality of multiplexed heater electrodes, wherein the heater electrodes are part of a multiplex circuit including a common lead connecting the heater electrodes to a power supply, each of the heater electrodes being associated with one of the microfluidic channels. The microfluidic device also includes a control system configured to regulate power applied to each heater electrode by varying a duty cycle, the control system being further configured to determine the temperature each heater electrode by determining the resistance of each heater electrode. | 10-01-2009 |
| 20110048547 | MICROFLUIDIC SYSTEMS AND METHODS FOR THERMAL CONTROL - The invention relates to methods and devices for control of an integrated thin-film device with a plurality of microfluidic channels. In one embodiment, a microfluidic device is provided that includes a microfluidic chip having a plurality of microfluidic channels and a plurality of multiplexed resistive thermal detectors (RTDs). Each of the RTDs is associated with one of the microfluidic channels. The RTDs are connected to a power supply through individual electrodes and pairs of common electrodes. Adjacent RTDs may be driven with alternating polarities, and the current in the common electrodes may be minimized using a virtual ground circuit. The compact microfluidic device is capable of fast heating and highly precise thermal control. The compact microfluidic device is also capable using the RTDs to sense temperature without their heating capability. | 03-03-2011 |
| 20110056926 | MICROFLUIDIC DEVICES WITH INTEGRATED RESISTIVE HEATER ELECTRODES INCLUDING SYSTEMS AND METHODS FOR CONTROLLING AND MEASURING THE TEMPERATURES OF SUCH HEATER ELECTRODES - The invention relates to methods and devices for control of an integrated thin-film device with a plurality of microfluidic channels. In one embodiment, a microfluidic device is provided that includes a microfluidic chip having a plurality of microfluidic channels and a plurality of multiplexed heater electrodes, wherein the heater electrodes are part of a multiplex circuit including a common lead connecting the heater electrodes to a power supply, each of the heater electrodes being associated with one of the microfluidic channels. The microfluidic device also includes a control system configured to regulate power applied to each heater electrode by varying a duty cycle, the control system being further configured to determine the temperature of each heater electrode by determining the resistance of each heater electrode. | 03-10-2011 |
| 20110064628 | MICROFLUIDIC CHIP FEATURES FOR OPTICAL AND THERMAL ISOLATION - A microfluidic chip includes microfluidic channels, elements for thermally and optically isolating the microfluidic channels, and elements for enhancing the detection of optical signal emitted from the microfluidic channels. The thermal and optical isolation elements may comprise barrier channels interposed between adjacently-arranged pairs of microfluidic channels for preventing thermal and optical cross-talk between the adjacent microfluidic channels. The isolation element may alternatively comprise reflective film embedded in the microfluidic chip between the adjacent microfluidic channels. The signal enhancement elements comprise structures disposed adjacent to the microfluidic channels that reflect light passing through or emitted from the microfluidic channel in a direction toward a detector. The structures may comprise channels or a faceted surface that redirects the light by total internal reflection or reflective film material embedded in the microfluidic chip. | 03-17-2011 |
| 20110077897 | MICROFLUIDIC DEVICES WITH INTEGRATED RESISTIVE HEATER ELECTRODES INCLUDING SYSTEMS AND METHODS FOR CONTROLLING AND MEASURING THE TEMPERATURES OF SUCH HEATER ELECTRODES - The invention relates to methods and devices for control of an integrated thin-film device with a plurality of microfluidic channels. In one embodiment, a microfluidic device is provided that includes a microfluidic chip having a plurality of microfluidic channels and a plurality of multiplexed heater electrodes, wherein the heater electrodes are part of a multiplex circuit including a common lead connecting the heater electrodes to a power supply, each of the heater electrodes being associated with one of the microfluidic channels. The microfluidic device also includes a control system configured to regulate power applied to each heater electrode by varying a duty cycle, the control system being further configured to determine the temperature of each heater electrode by determining the resistance of each heater electrode. | 03-31-2011 |
