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Dunan Microstaq Inc patents


Recent patent applications related to Dunan Microstaq Inc. Dunan Microstaq Inc is listed as an Agent/Assignee. Note: Dunan Microstaq Inc may have other listings under different names/spellings. We're not affiliated with Dunan Microstaq Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Dunan Microstaq Inc-related inventors


Method for self-aligning solder-attached mems die to a mounting surface

A method of attaching a mems die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a mems die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the mems die to a position where the surface tensions balance, and the mems die is centered on, and rotationally aligned with, the solder surface of the body.. . ... Dunan Microstaq Inc

Method of maintaining the flow rate of a refrigerant while maintaining superheat

A method of maintaining a fluid flow rate in a heating, ventilating, air conditioning, and refrigeration (hvac-r) system while maintaining superheat in the hvac-r system at a desired level includes: continuously measuring an operating fluid temperature of the hvac-r system, continuously calculating hvac-r system superheat at a pre-determined rate, determining if the calculated hvac-r system superheat is stable, measuring and recording the operating fluid pressure of the hvac-r system each time the calculated hvac-r system superheat is stable, recording an average operating fluid pressure each subsequent time the superheat is stable, calculating an output pwm according to the equation: output pwm=(flow rate component)+(superheat component), and reducing fluid flow through a metering valve in the hvac-r system when an actual hvac-r system pwm is greater than the calculated output hvac-r system pwm by adjusting a pwm signal to a microvalve in the metering valve, and increasing fluid flow through the metering valve in the hvac-r system when the actual hvac-r system pwm is less than the calculated output hvac-r system pwm by adjusting the pwm signal to the microvalve in the metering valve.. . ... Dunan Microstaq Inc

Open loop control system for a mems microvalve

A system for controlling fluid pressure to a transmission system through a mems microvalve includes a transmission controller configured to receive a target command pressure, a current system command pressure input signal, and a transmission system operating temperature. A power determination module determines a temperature-related power factor from the target command pressure, the current system command pressure input signal, the transmission system operating temperature received in the controller, and a look-up table within the controller. ... Dunan Microstaq Inc

Mems based solenoid valve

The electronically switchable mems valve includes a housing formed from soft magnetic material and defining a fluid flow path therethrough. A magnetic field generating member is mounted within the housing and connected to a source of electrical power. ... Dunan Microstaq Inc

Heat exchanger with expansion valve body formed on inlet header thereof

A microchannel heat exchanger is configured for use as an evaporator in a fluid cooling system and includes an inlet header, an outlet header, and a plurality of microchannel tubes extending between and in fluid communication with the inlet header and the outlet header. A microvalve actuated hybrid spool valve is attached to and in fluid communication with the inlet header.. ... Dunan Microstaq Inc

Expansion valve

A two-stage proportional control valve configured for use in a fluid system includes a valve body having a longitudinally extending valve body bore formed therethrough. A first stage microvalve is mounted within the valve body bore, and a second stage spool assembly is mounted within the valve body bore downstream of the microvalve. ... Dunan Microstaq Inc

Two-stage fluid control valve having a first stage mechanical valve and a second stage microvalve

A two-stage fluid control valve includes a first stage mechanical control valve movable between an open position and a leak-free closed position, and a second stage microvalve configured to control the flow of fluid through a fluid outlet of the two-stage fluid control valve when the first stage mechanical control valve is in the open position.. . ... Dunan Microstaq Inc

Method and apparatus for calibrating and testing multiple superheat controllers

A method of calibrating a plurality of superheat controllers includes attaching a plurality of superheat controllers to a manifold assembly, enclosing the manifold assembly within an environmental chamber, and simultaneously calibrating a pressure sensor within each of the plurality of superheat controllers.. . ... Dunan Microstaq Inc

Test equipment arrangement having a superheat controller

A test equipment arrangement includes a superheat controller configured for connection to a unit under test, and further configured to test at least one operational parameter of the unit under test.. . ... Dunan Microstaq Inc

Low leak pilot operated spool valve

A hybrid spool valve includes a body having a longitudinal bore. The bore has a fluid inlet chamber in fluid communication with a fluid inlet port and a fluid outlet chamber in fluid communication with a fluid outlet port. ... Dunan Microstaq Inc








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