Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7389786 | Ultrasonic and sonic odorization systems A system is shown for injecting a chemical, such as an odorant, from a chemical supply into a fluid containing system such as a natural gas pipeline or an LPG pipeline. A tank of odorant is maintained under a positive pressure which exceeds that of the pipeline. An ... | 06/24/2008 |
| 7349760 | System and method for sensing and controlling the concentration of a chemical agent in a solution A system for measuring and controlling the concentration of a chemical agent in a solution has a reaction cell for receiving a sample, a titrant dropper for releasing one or more drops of titrant into the sample, a first photosensor for sensing disruptions of light ... | 03/25/2008 |
| 7340967 | Device for measuring a mass flow rate of a particulate material A device for measuring a mass flow rate of a flow of particulate material which moves in a predetermined direction. The device includes a weighing cell, a first apparatus, a second apparatus, and a third apparatus. The weighing cell includes a tubular wall and is di... | 03/11/2008 |
| 7334780 | Device and method for manufacturing carbonated spring and carbonic water, control method for gas density applied thereto and membrane module Hot water (12) in a bath (11) is pumped up by a suction pump (9) and introduced into a carbon dioxide gas dissolver (7) through solution flow rate adjusting means (14) and then, poured into the bath (11). Carbon dioxide gas ... | 02/26/2008 |
| 7310046 | Method for eliminating reading errors in a non-contact microwave solids flow meter Method for eliminating or reducing reading errors of a non-contact microwave solids flow meter measuring solid particulate flow. The method is particularly suitable for calibration procedures prior to installation into an operating system. The flow meter is very sen... | 12/18/2007 |
| 7295329 | Position detection system A position detection system. In representative embodiments, the position detection system comprises a support structure having a cavity, a first light source configured to emit light into at least part of the cavity, a second light source configured to emit light in... | 11/13/2007 |
| 7259849 | Optical system for micro analyzing system There is provided an optical system 8 for a micro analyzing system capable of precisely analyzing a sample. In the optical system 8, after light beams leaving the tip of an optical fiber 14 pass through a condensing part 13, a sample movi... | 08/21/2007 |
| 7249449 | Conveying duct pressure monitor system for controlling harvester speed A differential pressure sensor measures the vacuum in a material conveying duct relative to atmospheric pressure or to a positive pressure farther upstream in the duct on an agricultural harvester. The output from this sensor is monitored electronically, and the res... | 07/31/2007 |
| 7237767 | Device and method for manufacturing carbonated spring and carbonic water, control method for gas density applied thereto and membrane module Hot water (12) in a bath (11) is pumped up by a suction pump (9) and introduced into a carbon dioxide gas dissolver (7) through solution flow rate adjusting means (14) and then, poured into the bath (11). Carbon dioxide gas ... | 07/03/2007 |
| 7096653 | Yield monitor for forage crops Yield monitor apparatus and method for a forage processing machinery are provided according to the invention. The yield monitor measures a forage yield by measuring a forage volume increment accumulation. In one embodiment of the invention, the yield monitor include... | 08/29/2006 |
| 7066037 | Method for measuring properties of a particle distribution A method and a device for measuring properties of a particle distribution, in which a parameter relating to the mobility of the particles is measured at one measuring point (302) and a parameter relating to the aerodynamic size of the particles is measured at... | 06/27/2006 |
| 7056360 | Optical odorization system A system is shown for injecting a chemical, such as an odorant, from a chemical supply into a fluid containing system such as a natural gas pipeline. A tank of odorant is maintained under a positive pressure which exceeds that of the pipeline. An injection conduit c... | 06/06/2006 |
| 7034549 | Device to detect and measure the concentration and characterization of airborne conductive or dielectric particles A measuring system is disclosed which detects and measures the volume concentration and mass flow of the airborne conductive particles, such as carbon-absorptive chaff particles. The measuring system can be used to estimate the effective conductivity of the detected... | 04/25/2006 |
| 6895821 | Ultrasonic test chamber for tray production system and the like A method and apparatus for ultrasonic inspection of one or more objects in an object holder. In a first embodiment of the method, the objects are immersed in a tank containing coupling fluid and a flow of fluid is generated in the tank beneath the object holder, the... | 05/24/2005 |
| 6814992 | Anaerobic fermentation method and apparatus A method and apparatus for monitoring a liquid undergoing anaerobic fermentation in a vessel is disclosed. The apparatus comprises an airlock containing a fluid for sealing the vessel and an electrical circuit operatively arranged to pass a current through the fluid... | 11/09/2004 |
| 6809821 | Optical-reflectance-based mass-flow sensor The present invention relates to a mass-flow sensor that measures the mass flow of conveyed reflective materials, such as cotton, in a stream of air or non-opaque fluid. In particular, the mass-flow sensor of the present invention may be used with a GPS receiver as ... | 10/26/2004 |
| 6726774 | Bubble detection system for detecting bubbles in photoresist tube A bubble detection system to detect bubbles in photoresist. The system includes photoresist at least one tank, a buffer tank, a pump, and a bubble sensor. The photoresist tank provides the photoresist. The buffer tank stores the photoresist from the photoresist tank... | 04/27/2004 |
| 6660528 | Method for monitoring contaminating particles in a chamber A method for determining the number of contaminating particles in a process chamber is described. While the method is particularly suited for detecting particles in a metal etch chamber, the present invention novel method can be utilized in any other semi... | 12/09/2003 |
| 6640649 | Droplet counter for low flow rates A low-flow metering device 10 for measuring the flow of an amount of liquid exceeding 0.05 ml., in which a first chamber 12 has an inlet 14, and an outlet 16 in fluid communication with a second chamber 17, the first chamber 12 containing an element 22 cr... | 11/04/2003 |
| 6623630 | Method and apparatus for monitoring a fluid system An apparatus for monitoring a fluid system particularly suited for use with high pressure liquid chromatography systems. The apparatus monitors seal leakage as well as the general wellness of the apparatus and can thus be used to provide preventive mainte... | 09/23/2003 |
| 6571644 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products The invention describes a method and a device for determining a filling level and can be applied to the ascertainment of the simmering process of mineral oil products. The method is characterized that by means of at least two stationary sensors, a first f... | 06/03/2003 |
| 6175227 | Potential-sensing method and apparatus for sensing and characterizing particles by the Coulter principle A Coulter apparatus comprises a volumeter assembly containing a conduit through which a particle suspension is caused to pass simultaneously with an electrical current. In preferred embodiments the volumeter assembly comprises at least one traditional Cou... | 01/16/2001 |
| 6161395 | Liquid level sensor A sensor system. The system comprises a binary sensor issuing a signal representative of a first or second condition; sampling circuitry, operatively connected to the binary sensor, for monitoring the number of transitions between the first and second con... | 12/19/2000 |
| 6131471 | Liquid level sensor A sensor system. The system comprises a binary sensor issuing a signal representative of a first or second condition; sampling circuitry, operatively connected to the binary sensor, for monitoring the number of transitions between the first and second con... | 10/17/2000 |
| 6040667 | System and method for driving wipers in a windshield wiper system A wiper system and method for use in a wiper system on a vehicle, such as an automobile, a truck, an agricultural vehicle, and the like is shown having a wiper motor having a drive shaft which is driven at a substantially linear rate. A first gear is coop... | 03/21/2000 |
| 5962793 | Compact feed pellet durability tester A compact pellet tester for testing the durability of animal feed pellets. The tester comprises a perforated hopper into which a high velocity stream of air is directed upward to agitate the pellets to measure the amount of material or fines which break o... | 10/05/1999 |
| 5920018 | Real time volumetric flow sensor A sensor for non-intrusively measuring the volumetric flow rate of materials, such as cotton, in a confined air stream is disclosed. The sensor is mounted on a conduit through which an air entrained material such as cotton flows. The sensor has an emitter... | 07/06/1999 |
| 5913236 | Protection system for hydraulic systems against leaks/floods, freezing and pressure A protection system for hydraulic systems, mainly for pipes, faucets, valves, boilers, furnaces, etc. which consists of a handling panel, a cut-off valve, a fluid leak detector, at least one pressure sensor, and a water shock absorber, and such a protecti... | 06/15/1999 |
| 5679907 | Method and device to determine the aerodynamic diameter of particles The invention concerns a method and device for determining the aerodynamic diameter of particles carried in a flow. To that end, the velocity of the flow is altered in an area and the particle velocity measured at at least one point before said area and a... | 10/21/1997 |
| 5650564 | Fluid drip detection system A fluid drip detection system which is not prone to false alarms caused by the presence of dirt or solid particle contaminants in the fluid. The fluid drip detector comprises; a conducting hollow housing for permitting fluid flow and passage therethrough,... | 07/22/1997 |
| 5576499 | Measuring and monitoring the size of particulate material The apparatus and method for measuring and monitoring the characteristic diameter of a flowing particulate material comprises: a chamber having a particle size measurement outlet of known dimensions through which some or all of the flowing material passes... | 11/19/1996 |
| 5559339 | Method and apparatus for verifying dispense of a fluid from a dispense nozzle Embodiments disclosed herein provide apparatuses and methods for verifying dispense of a fluid from a dispense nozzle. According to one method, a path of electromagnetic radiation from a source to a receiver is obstructed with the fluid dispensed from the... | 09/24/1996 |
| 5555797 | Control system and method for a kimchi fermentor A control system for a kimchi fermentor using a kimchi curing sensor constructed to detect gas bubbles and count the number of gas bubbles produced. For mass production of kimchi or other naturally fermenting foods, the control system includes a microproc... | 09/17/1996 |
| 5500992 | Method of making stress relieved count probe A method of making a count probe for counting particles comprises the following steps. A count wafer is formed along with a core member having an opening for accepting the count wafer. The count wafer is applied to the opening in the core member to form a... | 03/26/1996 |
| 5490428 | Metering of liquid substances The process relates to the metering of liquid substances wherein the liquid substance, with separation of drops, is conducted through one or several discharge orifices, and the quantity of liquid is measured by way of the number of thus-produced drops. Li... | 02/13/1996 |
| 5447692 | On-line process flow and reaction monitor The present invention makes use of a single detector to monitor several process functions, e.g. reaction efficiency, reagent flow rates, the presence of empty reagent reservoirs, the absence of a chemical reactor column in the system, blockage of flow sys... | 09/05/1995 |
| 5411052 | Liquid supply apparatus Liquid supply apparatus is disclosed for controlling the supply of liquid to humidifier apparatus. The liquid supply apparatus has a chamber with an inlet through which a liquid such as water is supplied to the chamber. The chamber has a flow detector to ... | 05/02/1995 |
| 5331309 | Drip detecting device and drip alarming device and drip rate control device which incorporate drip detecting device A drip detecting device for detecting drips dropping in a drip cylinder, includes an image detecting portion disposed in the vicinity of the outer wall surface of the drip cylinder for detecting the state in the drip cylinder as an image, and a drip detec... | 07/19/1994 |
| 5254102 | Apparatus for controlling the rate of dripping of intravenous fluid An apparatus for controlling the rate of dripping of an intravenous fluid, comprising (i) a drip-detecting device for detecting that an intravenous fluid has dripped into a drip-feed bottle, (ii) a clock for measuring time and indicating the current time,... | 10/19/1993 |
| 5219008 | Ice dispenser for soft drink system An ice dispensing system for a soft drink dispenser employs a microphone adjacent a cup into which ice and soft drink are to be dispensed. The microphone senses sounds made by ice pieces dropping into the cup and converts the sounds to electrical signals.... | 06/15/1993 |
