Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 5396812 | Sample system Improvements are set forth in the present disclosure for the sample taking system. It normally uses a valve which can be switched between two operative positions one delivering a sample. The valve lock mechanism is incorporated. Additional safety is provi... | 03/14/1995 |
| 5333511 | Portable controlled air sampler A portable analyzer for obtaining samples from a monitored environment during different time intervals includes a pump energized by a rechargeable battery pack for drawing gas from the environment selectively into plural sample holding bags and an impact ... | 08/02/1994 |
| 5308483 | Microporous filtration funnel assembly An in-line filter assembly is provided of a type having a housing divided into inlet and outlet chambers by a filter membrane having its periphery fluid-flow-sealed within the housing, the filter being readily disassemblable so that the filter membrane ca... | 05/03/1994 |
| 5205155 | Air monitoring cassette An air monitoring cassette for monitoring airborne particulate wherein the cassette includes a housing defining an airway therethrough. The housing includes an outlet end for connection to a pump. The housing further includes an inlet end opposite the out... | 04/27/1993 |
| 5119682 | Face level sampling device A face level sampling device comprising a headband (10) carrying a suction pump (11) and power pack (13). Connected to pump (11) is a rigid or semi-rigid tubular stalk (12) having a sample head at its free end which is thus positioned in the immediate vic... | 06/09/1992 |
| 5048354 | Device for sampling a circulating fluid A device is provided for sampling the contents of a pressurized circulating fluid system of a machine. The device is incorporated in a parallel fluid circuit and comprises a housing with an inlet to, and outlet from, a cavity. A filter is received within ... | 09/17/1991 |
| 4999164 | Pipetting device comprising a retaining cone for holding a slip-on pipette tip and pipette tip for such pipetting device A pipetting device comprises a retaining cone for holding a slip-on pipette tip and a piston chamber, which communicates with a passage of the retaining cone and contains a reciprocable piston, which acts on the pipette tip that has been fitted on the ret... | 03/12/1991 |
| 4963167 | Air delivery monitoring systems An air delievery monitoring system covers an aperture of an air duct with an insert having a bore. A filter element in communication with the inside of that air duct through that bore is made accessible from outside of that duct. Air escapes from the duct... | 10/16/1990 |
| 4951513 | Automatic preparation apparatus and filter therefor An automatic preparation apparatus has turntable means in which a plurality of test tubes can be disposed in radial direction, filter robot means which can move a releasable filter onto one of those test tubes, and probe robot means which can sample the l... | 08/28/1990 |
| 4912985 | Gas sampling system for reactive gas-solid mixtures An apparatus and method for sampling gas containing a reactive particulate solid phase flowing through a duct and for communicating a representative sample to a gas analyzer. A sample probe sheath 32 with an angular opening 34 extends vertically into a sa... | 04/03/1990 |
| 4856352 | Gas sampling system for reactive gas-solid mixtures An apparatus and method for sampling a gas containing a reactive particulate solid phase flowing through a duct and for communicating a representative sample to a gas analyzer. A sample probe sheath 32 with an angular opening 34 extends vertically into a ... | 08/15/1989 |
| 4835707 | Automatic analysis method and apparatus for enzyme reaction An automatic analysis method of and apparatus for the full automation of an enzyme reaction analysis from the pretreatment step of the reaction to the data processing step, wherein the operation of the pretreatment step is arranged to be sequentially perf... | 05/30/1989 |
| 4827779 | Cartridge personal sampling impactor A personal sampling impactor that comprises a compact mounting arrangement using a base, a cover, and an impactor plate cartridge that fits within the cover and is supported on an upper end of the base. A filter is held in place between the impact plate c... | 05/09/1989 |
| 4544386 | Filter cassette A filter cassette for sampling of airborne substances comprising a body section having an air flow passageway that extends through the body section from an air inlet to an air outlet. A filter medium inside the body section is disposed across the air flow... | 10/01/1985 |
| 4501161 | Autosampler This invention relates to an apparatus for automatically sampling a clarified test solution from a suspension to be tested, which comprises two filtering tubes being immersed in the suspension, a circulator connected to the one tube, and a sampling cell c... | 02/26/1985 |
| 4461184 | Compressed breathing air sampling device A compressed gas sampling device is shown which includes a pressure reducing orifice to permit collection of a gas sample at a low pressure. A filter cartridge is connected between a flow meter and a pressurized source for analysis and gas is passed throu... | 07/24/1984 |
| 4426214 | Laminated filters Disclosed are filters which are particularly useful in sampling devices for detecting radioactive particulate contaminants in a gaseous medium, such as air. The filters comprise a filter membrane sandwiched between two pieces of plastic material having ho... | 01/17/1984 |
| 4391151 | Circular two-stage air particulate and gas sampler A linear filter-type sampling device for pneumatic particulates such as air and/or gases, (sometimes referred to as streaker), wherein a series of at least two complementary samples are taken concurrently with time and size particle information. The devic... | 07/05/1983 |
| 4341125 | Devices for extracting a sample of fluid from a hydraulic circuit The present invention concerns a device for extracting a sample of fluid from a hydraulic circuit having an extraction take-off, for detection of impurities. The device comprises in particular a body (10, 12) provided with a ferrule (14), capable of fitti... | 07/27/1982 |
| 4332301 | Method and a machine of obtaining samples from the ground to determine its composition A method and a machine for obtaining of samples from the ground to determine the presence of certain substances in the ground. A drilling machine drives a drill down into the section of the ground to be prospected and cooling air is forced through the dri... | 06/01/1982 |
| 4240912 | Immersion dialyzer An immersion dialyzer which comprises a removable dialysis head including a membrane holder, at least one inlet canal and a return canal. A holder tube is removably connectable to the dialysis head and includes therein at least one inlet pipe removably co... | 12/23/1980 |
| 4214480 | Integrated smoke tester This invention relates to an "Integrated Smoke Tester", a device for use in the sampling and smoke spot testing of the flue gases of an oil burner and consists of a sampling tube, a hand vacuum pump, valves, built-in storage filter paper dispenser, a knur... | 07/29/1980 |
| 4178794 | Environmental sampling device Device for collecting air-borne dust samples on a membrane in an even distribution which enables X-ray diffraction analysis of the collected samples.... | 12/18/1979 |
| 4167875 | Filtration method and apparatus Apparatus for treating samples comprising a sample holding element; a wash trough removably positioned over the sample holding element; transfer tubes or conduits in sample receiving contact with the sample holding element, extending through the wash trou... | 09/18/1979 |
| 4059020 | Filter for micropipettes A disposable two part filter assembly for use on the detachable tip of a laboratory pipette. It comprises a body member with an opening shaped and sized to engage the tip. Such body members may be provided for a wide range of tip sizes and shapes. Inserte... | 11/22/1977 |
| 4055087 | Aquatic-life depletion-sampling device and technique In a preferred embodiment, a cylindrically-shaped forwardly-screened vessel having an open lower end and an open or netted upper end, and at a rearward wall of the vessel there being a curved collector plate having centrally thereof an outlet port to whic... | 10/25/1977 |
| 3985032 | Micropipette filter tips A removable, disposable molded plastic tip for use with a spring-loaded plunger-actuated vacuum pipette. The discharge end of the tip is provided with a solid porous filter member designed to filter a sample fluid during either of fluid entry into, or dis... | 10/12/1976 |
