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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7451645 | Test mass for gravimeters and gradiometers The present invention provides devices and methods for reducing or eliminating sources of systematic errors in the measurement of absolute gravity or gravity field gradients; specifically, an improved test mass for an interferometer is disclosed that reduces the inf... | 11/18/2008 |
| 7358863 | Double barrel chemical seeking sidewinder gun devices A large side vandal and weather resistant sign, capable of displaying images from several components, including a video cassette with tapes or video disc and other component parts for broadcasting command directions and to provide information. The sign system, with ... | 04/15/2008 |
| 7334909 | Underwater visibility device The underwater visibility device may be used for improved visibility viewing of an underwater device in an underwater diving environment. A closed container may have a flexible portion formed of a relatively transparent material with respect to an underwater device ... | 02/26/2008 |
| 7250603 | Crawling handle for thermal imaging camera A thermal imaging camera is provided that facilitates crawling by a user has a handle that supports the user's hand off of a floor and protects the camera. The handle includes a grip with a front bumper guard and a base having a widened portion at its butt end that ... | 07/31/2007 |
| 7232961 | Portable hand held luggage weight and size measurement device A portable hand held device for weighing and measuring the size of a luggage item includes a handle designed to provide support yet comfort with respect to the use of the weighing device and further includes a mechanism which enables recordal of the weight of luggag... | 06/19/2007 |
| 7004032 | Pressure gauge measuring multiple pressure values A method for measuring multiple pressures by a single gauge (6) for simultaneously measuring separate pressures by respective pressure sensing elements (7, 8); and simultaneously indicating measurements of the separate pressures by respective pointers ... | 02/28/2006 |
| 7001036 | Electroluminescent illumination for a magnetic compass An illumination device for a magnetically sensitive instrument comprising a magnetically sensitive instrument, preferably a magnetic compass needle, and an electroluminescent device comprising an electroluminescent panel positioned behind and facing the magnetically... | 02/21/2006 |
| 6928869 | Stick for measuring the level of a molten metal bath A measurement rod for measuring the level of a liquid bath is cooled but is provided with a solid end piece so that the bath cannot solidify in front of the orifice of the measurement gas injected in the bath, for which the pressure is being measured. ... | 08/16/2005 |
| 6883246 | Freeboard measuring device A freeboard-measuring device has a central housing with streamlined fins extending along sides and bottom of the housing to prevent uplifting of the housing when lowered into water and minimize resistance to wind and current. The housing defines a chamber with a bot... | 04/26/2005 |
| 5988873 | Portable bathymetric probe simulator The invention relates to a portable simulator for bathymetric probes of the thermometric or calorimetric types connected at the output to an acquisition card. The simulator has at least four circuits corresponding, respectively, to the following four func... | 11/23/1999 |
| 5834641 | Depth gauge The invention relates to a depth gauge for use in angling or sports fishery. The depth of a body of water may be measured therewith from its surface to its bottom, and/or the depth and the size of strata of water of different temperatures for the purpose ... | 11/10/1998 |
| 5791187 | Level measurement method using measurements of water column pressure therefor For the apparatus and method to measure the water depth and level using a gas bubble type level meter, the measurement pipe for water column pressure is composed of plastic pipes of inside diameter of 2-4 mm; two measurement pipes for water column pressur... | 08/11/1998 |
| 5555518 | Depth sensing expendable oceanographic probes An expendable oceanographic probe includes a body having a weighted nose section and an after body having a tail for stabilization. A spool of wire is paid out through the tail of the after body for coupling to a data acquisition system. The expendable oc... | 09/10/1996 |
| 5319964 | Apparatus, method and system for monitoring fluid Fluid level in a container is determined using a single pressure transducer connected to a portable body. The body contains a computer having a memory in which fluid level-to-fluid volume conversion data are stored for different shapes of containers so th... | 06/14/1994 |
| 5313712 | Scuba diving instrument console having swivelling compass assembly An instrument console for use in scuba diving includes a console body having a first end adapted for connection to a pressurized air line, and a second end opposite the first end, at least one instrument being secured within the console body, a compass ha... | 05/24/1994 |
| 5303587 | Diver's depth gauge The present invention comprises an oil-filled depth gauge which is made far less sensitive to violent shock and the potential resulting inaccuracies to the maximum depth gauge indicator from such shock. More specifically, the present invention comprises a... | 04/19/1994 |
| 5277054 | Apparatus for in-situ calibration of instruments that measure fluid depth The present invention provides a method and apparatus for in-situ calibration of distance measuring equipment. The method comprises obtaining a first distance measurement in a first location, then obtaining at least one other distance measurement in at le... | 01/11/1994 |
| 5272920 | Apparatus, method and system for monitoring fluid Fluid level in a container is determined using a single pressure transducer connected to a portable body. The body contains a computer having a memory in which fluid level-to-fluid volume conversion data are stored for different shapes of containers so th... | 12/28/1993 |
| 5211678 | Apparatus, method and system for monitoring fluid Fluid level in a container is determined using a single pressure transducer connected to a portable body. The body contains a computer having a memory in which fluid level-to-fluid volume conversion data are stored for different shapes of containers so th... | 05/18/1993 |
| 5191719 | Depth gauge for a fishing line A depth gauge for a fishing line of the manometric type, having a transparent tube plugged at one end and a valve means closing the other end, allowing a measurable amount of water into the tube and entrapping it therein, a calibrated depth scale to compa... | 03/09/1993 |
| 5191790 | Carrier An assembly capable of being launched from a submarine to carry into seawater an element responsive to a property of the water to be measured, comprising a carrier member coupled to the element, a lifting body shaped to provide hydrodynamic lift, a tether... | 03/09/1993 |
| 5049864 | Display scheme for decompression data Novel display scheme for decompression data is herein presented which can be animated by various types of decompression computers and permits the use of new, highly advantageous procedures in many aspects of diving, notably: (1) no-decompression diving, (... | 09/17/1991 |
| 5046359 | Underwater launched carrier An assembly capable of being launched from a submarine to carry into seawater an element responsive to a property of the water to be measured, comprising a carrier member coupled to the element, a lifting body shaped to provide hydrodynamic lift, a tether... | 09/10/1991 |
| 4953986 | Air/sea temperature probe An air/sea temperature probe is disclosed which can be deployed from a moving ship to detect the temperature profile of the atmosphere and ocean beyond the thermal influence of a ship. The probe includes a temperature transducer which utilizes a bifilar w... | 09/04/1990 |
| 4887361 | Streamlined freeboard measuring device The invention relates to a freeboard measuring device which comprises an elongated housing having a rectangular cross-section form, a central part of the device body. A pair of fins fixedly connected to the housing on each of its sides extend substantiall... | 12/19/1989 |
| 4854728 | Seawater probe A seawater probe for measuring a physical parameter which includes a sensor element having an electrical characteristic dependent on the parameter and a detector circuit for deriving a measurement signal corresponding to a measured value of the electrical... | 08/08/1989 |
| 4835716 | Compact measuring apparatus capable of measuring two different data with a single pressure sensor Only one pressure sensor is employed in a compact measuring apparatus for measuring both depths of water and altitude. A pressure-data generator generates pressure data corresponding to a pressure applied to the single pressure sensor. A water-depth data ... | 05/30/1989 |
| 4809550 | Digital diving meter The disclosure in the specification sets forth a digital diving meter providing information on an axis to be readily observed in reading the information along the axial line of the display. The display is incorporated within the diving meter movement havi... | 03/07/1989 |
| 4782338 | Display scheme for decompression data Novel display scheme for decompression data is herein presented which can be animated by various types of decompression computers and permits the use of new, highly advantageous procedures in many aspects of diving, notably: (1) no-decompression diving, (... | 11/01/1988 |
| 4712305 | Freeboard measuring device A device is disclosed for measuring the change in the freeboard of a barge, indicating a varying amount of cargo within the barge. An oil gauging tape is used to lower the device which comprises a vertical pipe transversed by a horizontal bar with an aper... | 12/15/1987 |
| 4589283 | Ascent gauge for divers A gauge for warning a scuba diver of an unsafe rate of ascent in the ocean or sea. The gauge is normally attached to the diver's forearm or wrist by means of straps. As the diver ascends, water flows through the gauge. A disk which is pivotally attached w... | 05/20/1986 |
| 4557608 | Thermal microstructure measurement system A thermal microstructure measurement system (TMMS) operates autonomously h its own internal power supply and telemeters data to a platform. A thermal array is mounted on a cross-braced frame designed to orient itself normal to existing currents with fixe... | 12/10/1985 |
| 4528846 | Measuring devices for watercraft Measuring devices for small, high performance sailboats, sailboards and other watercraft comprise a transducer to convert pressure exerted by the water through which the watercraft passes into a gas pressure within a chamber in the transducer, a gage to b... | 07/16/1985 |
| 4520668 | Manometric instrument for underwater diving A manometric instrument for use with air bottles of an underwater respirator for underwater diving, comprises a sealed casing having a transparent closure cover; a first fixed scale fixed within the casing for indicating pressure and having graduations ba... | 06/04/1985 |
| 4494407 | Depthometer for underwater diving A depthometer useful for underwater diving is constructed with a cup-shaped casing, and a rotatable transparent cover that is sealably snap-mounted to the casing and closes the front of the casing. The transparent cover houses an indicating pointer that r... | 01/22/1985 |
| 4491015 | Combined instrument system for divers A combined instrument system for divers, in which a first instrument is connectable to a user by flexible attachment means and is snap engaged to a link which can be connected removably to at least one further instrument disposed alongside the first instr... | 01/01/1985 |
| 4466285 | Underwater instrument for the combined reading of immersion time and depth, and decompression time An underwater instrument for the combined reading of immersion time and depth, and decompression time, wherein a depthometer, a clock device and decompression tables are mounted in mutually adjacent positions on a single support element.... | 08/21/1984 |
| 4466283 | Divers console with knife and sheath A diver's combined gauge console having an integral mount for a knife and sheath. The gauges may include a tank pressure gauge and a depth gauge. The gauges may be slightly tilted toward one another for ease of reading. The depth gauge may be externally a... | 08/21/1984 |
| 4352168 | Diver's bottom timer/depth gauge or the like and direct digital input and tracking system therefor A meter for divers which records and displays depth and elapsed time of dive information in LCD format including a microprocessor for recording and displaying essential dive information, a sensor, responsive to ambient pressure and variations in such pres... | 09/28/1982 |
| 4350042 | Time-depth integrator A time-depth integrator for divers to indicate when a diver is approaching or has reached the maximum safe time limit for a dive without requiring decompression procedures when surfacing includes an evacuated chamber with an elongate channel communicating... | 09/21/1982 |
