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| Number | Title | Issue Date |
| 7443169 | Shield arrangement for a vacuum cell A shield arrangement for a vacuum measuring cell has a tubular shield housing encompassing a shield and an exit port for connection to a vacuum measuring cell and a connection opening for the object space to be measured. The shield is between the two openings and is... | 10/28/2008 |
| 7392686 | Calibration apparatus for vacuum gauge having combined use of 1 Torr level, 10 Torr level, and 100 Torr level Disclosed herein is a calibration apparatus for vacuum gauge having a combined use for an 1 Torr level, a 10 Torr level, and a 100 Torr level vacuum gauge. According to the present invention, there is provided a calibration apparatus for vacuum gauge, in which a sta... | 07/01/2008 |
| 7373799 | Testing a fuel tank vacuum sensor A method of determining whether a vacuum/pressure sensor in a vehicle fuel tank correctly indicates a vacuum level in the tank. An input from the sensor is obtained. The tank is sealed for a predetermined time period. After the time period, another input is obtained... | 05/20/2008 |
| 7276023 | Device for checking endoscope channels In order to check endoscope channels, a predetermined quantity of liquid is led, at a predetermined pressure, through the channel that is to be checked, and the period of time for this is measured and evaluated. The predetermined quantity of liquid is determined via... | 10/02/2007 |
| 7153709 | Method and apparatus for calibrating degradable components using process state data The present invention is generally directed to various methods and systems for calibrating degradable components using process state data. In one illustrative embodiment, the method includes providing a tool comprised of at least one process chamber, providing at le... | 12/26/2006 |
| 7086271 | Vacuum generating method and device A test device and method for drawing a vacuum relative to an ambient environment. The device includes a member defining a passage, a valve, and a fluid communication conduit. The passage extends between a first end and a second end, and includes a constriction defin... | 08/08/2006 |
| 6986736 | Automated endoscope reprocessor connection integrity testing A method detects proper connection of fixtures to one or more channels in an endoscope during a cleaning or disinfection procedure. The endoscope has a first opening into one of its channels. The method includes the steps of placing the endoscope at the first openin... | 01/17/2006 |
| 6964187 | Vacuum sensor An apparatus and method for measuring the vapor or gas content of a vacuum chamber (1) by a vapor sensor (21) located in the fore-line of a vacuum system is provide. The gas or vapor content is determined by first providing a zero condition for the sen... | 11/15/2005 |
| 6955073 | Pressure sensing in surgical console A method of determining the accuracy of a pressure sensor in a surgical console is disclosed. The method involves actuating a linear actuator so that its plunger is linearly displaced a pre-defined amount, and measuring the force exerted by the plunger on a non-comp... | 10/18/2005 |
| 6938456 | Vacuum generating method and device including a charge valve and electronic control A vacuum generating device and method include a member that defines a passage, a first valve, a second valve, a fluid communication conduit, a transducer, and a processor. The passage extends between a first end and a second end, and includes a constriction that def... | 09/06/2005 |
| 6830068 | Vacuum generating method and device including a charge valve A vacuum generating device and method include a member defining a passage, a first valve, a second valve, and a fluid communication conduit. The passage extends between a first end and a second end, and includes a constriction defining an orifice. The first valve co... | 12/14/2004 |
| 6829920 | Design and manufacturing processes of long-life hollow cathode assemblies A process for testing an impregnated insert of a Hollow Cathode Assembly (HCA) subsequent to every exposure of the HCA to air, and prior to ignition, using a heater and an oil-free assembly having a base pressure of less than 5.0×10−6 torr. The process... | 12/14/2004 |
| 6827101 | Vacuum generating method and device A test device and method for drawing a vacuum relative to an ambient environment. The device includes a member defining a passage, a valve, and a fluid communication conduit. The passage extends between a first end and a second end, and includes a constriction defin... | 12/07/2004 |
| 6779555 | Vacuum generating method and device including a charge valve and electronic control A vacuum generating device and method include a member that defines a passage, a first valve, a second valve, a fluid communication conduit, a transducer, and a processor. The passage extends between a first end and a second end, and includes a constriction that def... | 08/24/2004 |
| 6601432 | Method and apparatus for checking sensors Methods and apparatus are disclosed for testing differential pressure sensors. The method includes applying a pressure of predetermined value to the reference side of the differntial pressure sensors, measuring the output values from the measurement sides... | 08/05/2003 |
| 6393336 | Nozzle clogging detection device and method There are provided a nozzle clogging detection device for an electronic component-mounting apparatus, which has a simple construction and is capable of accurately detecting clogging of a vacuum nozzle and erroneous mounting of a vacuum nozzle different in... | 05/21/2002 |
| 6170316 | Pressure and vacuum switch testing tool A tool for testing pressure/vacuum engine control switches includes a first and second housing. The housings each include inner and outer passages. The housings are attached with the inner passages placed adjacent each other. When attached, the housings f... | 01/09/2001 |
| 5808175 | Solving production down time with parallel low pressure sensors An in-process method and apparatus for monitoring and correcting or replacing a low pressure sensor that gives incorrect low pressure readings because of being contaminated or defective during the formation of integrated circuit structures in a low pressu... | 09/15/1998 |
| 5808176 | Solving production downtime with parallel low pressure sensors An in-process method and apparatus for monitoring and correcting or replacing a low pressure sensor that gives incorrect low pressure readings because of being contaminated or defective during the formation of integrated circuit structures in a low pressu... | 09/15/1998 |
| 5539674 | Minimum reading pressure gage with dual function sensor An electronic device for observing temperature and pressure and for indicating pressure, especially very low pressures. The device has a single sensor element for responding to both temperature and pressure. The device includes a sequence timer for causin... | 07/23/1996 |
| 5517846 | Electronic vacuum sensor A disposable electronic vacuum sensor capable of detecting a relatively low vacuum pressure of about 0.04 to 0.05 inches of water. The sensor includes a body having an LED and an opening at one end, and a channel extending longitudinally into the body fro... | 05/21/1996 |
| 5515711 | Pressure measurement and calibration apparatus using gravity-induced diaphragm deflection A pressure measurement and calibration apparatus for accurately detecting fluid pressures in the range of between approximately 0 and 1000 millitorr, and more particularly in the range of between 0 and 10 millitorr, and a method for calibrating an externa... | 05/14/1996 |
| 5485741 | Vacuum calibration method for an optical fiber pressure transducer The present invention provides a method for normalization and calibration of a fiber optic pressure transducer wherein the normalization routine includes measuring the minimum and maximum light signals returning from the pressure transducer and adjusting ... | 01/23/1996 |
| 5481482 | Pressure information processing system suitable for use in a vacuum unit In a vacuum unit which can electrically process information, a vacuum pressure value is detected by a detecting device and a desired pressure value is set by a setting device. The so-set desired pressure value is digitally displayed on a displaying device... | 01/02/1996 |
| 5475619 | Method of and apparatus for processing vacuum pressure information A method and an apparatus for electrically processing vacuum pressure information in a vacuum unit. The apparatus basically comprises a vacuum supply mechanism, a detecting device, a determining device, a failure precognition signal generating device and ... | 12/12/1995 |
| 5311452 | Plasma processing apparatus using capacitance manometer and pressure control method thereof A pressure gage detects a pressure in a vacuum-processing container as an electrical signal. A pressure detection signal from the pressure gage includes an error over time. An error detecting unit detects a signal representing the error which is output fr... | 05/10/1994 |
| 5272906 | Aircraft stall alarm testing tool An airplane stall alarm testing tool applies a temporary partial vacuum to a stall horn installed in an aircraft wing. The tool mechanically or otherwise creates a vacuum without human direct oral contact with the aircraft and enables testing by a pilot u... | 12/28/1993 |
| 5195522 | Tonometry sensor calibration apparatus A calibration apparatus for use in calibrating a tissue stress sensor used in a blood pressure monitoring system. The calibration apparatus includes a calibration head which is adapted to be retained in close proximity to a tissue stress sensor. The calib... | 03/23/1993 |
| 4733553 | Method and apparatus for low pressure testing of a solid state pressure sensor The present invention consists of a miniature vacuum chamber that is capable of testing individual dice prior to packaging. The upper portion of the chamber consists of a housing having testing probes and a vacuum inlet disposed therein. The lower portion... | 03/29/1988 |
| 4658829 | Method and apparatus for pressure transducer calibration and simulation A method and apparatus for verifying the calibration of a pressure transducer in a pressure monitoring system and for isolating defective electrical components of the monitoring system. The apparatus includes a manually operable pressure cylinder for gene... | 04/21/1987 |
| 4378523 | Metering and control system A metering and control system is provided which in one embodiment provides a continuous reading vacuum gage and a controller for activating relays when the vacuum pressures indicated by the gage pass through one or more set points. The controller comprise... | 03/29/1983 |
| 4267721 | Respiratory analyzer An apparatus for testing and calibrating respiratory therapy equipment. A single compact unit is pre-programmed to automatically valve in each selected test, and display pertinent parameters in a digital format. The system includes two flow transducers, o... | 05/19/1981 |
| 4182158 | Static pressure orifice system testing method and apparatus A method and apparatus for pressure testing the static pressure orifices and associated connections used in wind tunnels. A cylindrical module, having in one end an open hemispherical calibration pressure chamber separated from and surrounded by an annula... | 01/08/1980 |
