Patent application number | Description | Published |
20090143726 | MEANS FOR USING SINGLE FORCE SENSOR TO SUPPLY ALL NECESSARY INFORMATION FOR DETERMINATION OF STATUS OF MEDICAL PUMP - A medical pump, for use with a cassette having a pumping chamber, includes a pumping element with a piston slider assembly which intermittently pressurizes the pumping chamber during a pumping cycle and has a piston head connected to a main body with a single pressure sensor positioned there between. A camshaft is associated with the pumping element, an inlet control element, and an outlet control element for closing the pumping chamber to flow when the pumping chamber is pressurized. A processing unit receives pressure and position data from the pressure sensor and a position sensor associated with the pumping element, and processes this data to determine the operating condition of the pump. The operating conditions determined include: blocked fluid flow, no fluid in the line, no cassette associated with the pump, proper pump priming, or proper valve sealing. | 06-04-2009 |
20090143727 | MEANS FOR USING SINGLE FORCE SENSOR TO SUPPLY ALL NECESSARY INFORMATION FOR DETERMINATION OF STATUS OF MEDICAL PUMP - A medical pump, for use with a cassette having a pumping chamber, includes a pumping element with a piston slider assembly which intermittently pressurizes the pumping chamber during a pumping cycle and has a piston head connected to a main body with a single pressure sensor positioned there between. A camshaft is associated with the pumping element, an inlet control element, and an outlet control element for closing the pumping chamber to flow when the pumping chamber is pressurized. A processing unit receives pressure and position data from the pressure sensor and a position sensor associated with the pumping element, and processes this data to determine the operating condition of the pump. The operating conditions determined include: blocked fluid flow, no fluid in the line, no cassette associated with the pump, proper pump priming, or proper valve sealing. | 06-04-2009 |
20090144025 | METHOD FOR DISCRIMINATING BETWEEN OPERATING CONDITIONS IN MEDICAL PUMP - A method is disclosed for determining the operating condition of a medical pump based on data derived from a pressure sensor and a position sensor. The pressure sensor generates pressure data by sensing the force on the pumping element. The position sensor generates position data by tracking the pumping cycle and determining the position of the pumping element. The pump pressure data and pump position data are processed and the calculated results compared with a pre-determined threshold value to determine the operating condition of the pump. The three main types of operating conditions of concern are the following: normal condition, where liquid is present and no leaks exist in pumping chamber; leak condition, where liquid is present but a leak exists in the pumping chamber; and air stroke condition, where the chamber contains some air. | 06-04-2009 |
20090144026 | METHOD FOR DISCRIMINATING BETWEEN OPERATING CONDITIONS IN MEDICAL PUMP - A method is disclosed for determining the operating condition of a medical pump based on data derived from a pressure sensor and a position sensor. The pressure sensor generates pressure data by sensing the force on the pumping element. The position sensor generates position data by tracking the pumping cycle and determining the position of the pumping element. The pump pressure data and pump position data are processed and the calculated results compared with a pre-determined threshold value to determine the operating condition of the pump. The three main types of operating conditions of concern are the following: normal condition, where liquid is present and no leaks exist in pumping chamber; leak condition, where liquid is present but a leak exists in the pumping chamber; and air stroke condition, where the chamber contains some air. | 06-04-2009 |
Patent application number | Description | Published |
20090211253 | Organic Rankine Cycle Mechanically and Thermally Coupled to an Engine Driving a Common Load - The shaft ( | 08-27-2009 |
20100095997 | Stacked thin-film superlattice thermoelectric devices - A thermoelectric device ( | 04-22-2010 |
20130055734 | SENSOR MOUNT FOR A MOBILE REFRIGERATION SYSTEM - A refrigeration system for a mobile unit includes a refrigeration loop ( | 03-07-2013 |
20130111930 | Ejector Cycle | 05-09-2013 |
20130111935 | High Efficiency Ejector Cycle | 05-09-2013 |
20130125569 | Ejector Cycle | 05-23-2013 |
20130174551 | HIGH GLIDING FLUID POWER GENERATION SYSTEM WITH FLUID COMPONENT SEPARATION AND MULTIPLE CONDENSERS - An example power generation system includes a vapor generator, a turbine, a separator and a pump. In the separator, the multiple components of the working fluid are separated from each other and sent to separate condensers. Each of the separate condensers is configured for condensing a single component of the working fluid. Once each of the components condense back into a liquid form they are recombined and exhausted to a pump that in turn drives the working fluid back to the vapor generator. | 07-11-2013 |
20130174552 | NON-AZEOTROPIC WORKING FLUID MIXTURES FOR RANKINE CYCLE SYSTEMS - A power generation system includes a non-azeotropic working fluid mixture and a Rankine cycle system. The Rankine cycle system includes a turbine generator that is driven by vapor of the first working fluid mixture, and a condenser that exchanges thermal energy between the vapor received from the turbine generator and a cooling medium. The working fluid mixture is characterized by a condenser temperature glide during phase change between approximately five degrees and thirty degrees Kelvin, a condensing pressure between approximately one tenth of one percent and eleven percent of a critical pressure of the working fluid mixture, and a condenser bubble point temperature between approximately one degree and nine degrees Kelvin greater than a temperature at which the cooling medium is received by the condenser. | 07-11-2013 |
20130340984 | TWO-PHASE DISTRIBUTOR - A heat exchanger is described comprising a distributor having an outer housing and including a plurality of substantially parallel plates disposed within the housing and configured to partition an input two-phase flow into a series of primarily single-phase layers. A heat exchanger is described comprising a distributor having an outer housing including a plurality of substantially parallel channels disposed therein, each channel configured to uniformly and independently convey a portion of a homogenous input two-phase flow from an input of the distributor to an output of the distributor. | 12-26-2013 |
20140083121 | Ejector with Motive Flow Swirl - An ejector ( | 03-27-2014 |
20140109604 | Ejector Mixer - An ejector ( | 04-24-2014 |
20140260404 | HIGH EFFICIENCY REFRIGERATION SYSTEM - A refrigerant system includes a first, substantially outdoor, two phase heat transfer fluid vapor compression circulation loop including a compressor, a heat exchanger condenser, an expansion device, and the heat absorption side of a heat exchanger evaporator condenser, connected by conduit in a closed loop and having disposed therein a first heat transfer fluid having a critical temperature of greater than or equal to 31.2° C. The system also includes a second, at least partially indoor, two phase heat transfer fluid circulation loop that transfers heat to the first loop through the heat exchanger evaporator condenser. The second loop includes the heat rejection side of the heat exchanger evaporator condenser, a liquid pump, and a heat exchanger evaporator, connected by conduit in a closed loop and having disposed therein a second heat transfer fluid that has an ASHRAE Class A toxicity rating and an ASHRAE Class 1 or 2L flammability rating. | 09-18-2014 |
20140345837 | HEAT EXCHANGER DISTRIBUTION ASSEMBLY AND METHOD - A heat exchanger distribution assembly includes a channel guide comprising an outer surface. Also included is an outer shell comprising a hollow portion and a plurality of distribution holes, wherein the channel guide is at least partially disposed within the hollow portion. Further included is a plurality of channel grooves disposed between an inner surface of the outer shell and the outer surface of the channel guide, wherein the plurality of channel grooves are configured to convert circumferentially spaced flow passages to axially spaced flow passages to route the fluid to a plurality of layers of a heat exchanger. | 11-27-2014 |