Quotables
"Inventing is a combination of brains and materials. The more brains you use, the less material you need."
Charles Kettering
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7251998 | Liquid measurement system having a plurality of differential pressure probes The weight of liquid in a tank subject to tilting is determined by measuring differences in air pressure in the ullage (the empty volume of the tank above the level of the liquid) and the air pressure produced by the weight of the liquid at the bottom of the tank. T... | 08/07/2007 |
| 6601449 | Self-regulating bubble tube assembly A self-regulating bubble tube assembly is used for determining the hydrostatic pressure exerted by fluids, such as drilling mud. The bubble tube assembly can be used to determine fluid level based upon said hydrostatic pressure and when bubble tubes are u... | 08/05/2003 |
| 5953954 | Installation and method for determining the level and density of a liquid in a tank, using a single immersed bubble probe An installation and method for determining the level and density of a liquid in a tank. A reference probe leads into the tank, above the liquid. A single bubble probe is connected by a valve to the reference probe. The bubble probe extends into the tank a... | 09/21/1999 |
| 5587527 | Handheld density meter A method and handheld apparatus for the measurement of liquid density comprising a handheld enclosure which encases a differential pressure transducer having each pressure orifice connected by separate tees to separate hollow bubble tubes. Each bubble tub... | 12/24/1996 |
| 5495225 | Method of alerting a vehicle driver to different types of traction losses A warning system alerts a driver of a motor vehicle to different types of traction losses. A first sensing circuit (10) detects a loss of wheel adhesion by monitoring a vehicle drive line for a pronounced vibration within a range of between ten and fiftee... | 02/27/1996 |
| 5309764 | Tank gauging system A system to determine fluid level in a tank using several tubes extending to different levels in the tank. Gas pressure in the tubes needed to release bubbles from the exit ends of the tubes indicates the hydrostatic head at the exit ends. A control unit ... | 05/10/1994 |
| 5167144 | Method and apparatus for the remote monitoring of fluids The present invention provides a method and apparatus for measuring, particularly remotely, a first composition-dependent physical property, such as bubble rise velocity or dynamic viscosity, of a fluid comprising a container for holding the fluid at a ce... | 12/01/1992 |
| 5047124 | Apparatus for feeding gas into a saline solution An apparatus for feeding gas into a heated saline solution for pressure measurement or to pump this solution. The gas is introduced into the solution through a gas bubbling-in pipe having a gas outlet opening. The gas is heated prior to being introduced i... | 09/10/1991 |
| 5020368 | Method and system measuring a vertical density profile of a fluid Method and system for measuring vertical density profile of fluid by pressurizing an array of pipes, determining level and pressure signals on each pipe and deriving profile therefrom.... | 06/04/1991 |
| 4949572 | Method and apparatus for determining physical properties of liquids A microprocessor based instrument is provided for measuring liquid level, specific gravity, or density. The instrument includes a mainframe controller, a remote sensor, and two sets of dip tube assemblies, one for each of two measurement channels. The ins... | 08/21/1990 |
| 4719799 | Head for a bubble tube Apparatus for sensing hydrostatic pressure in a fluid, forming a head for a bubble tube for immersion into the fluid. The head is formed of a plate having a flat lower surface for horizontal disposition within a liquid, a first orifice for introducing a g... | 01/19/1988 |
| 4708018 | Drilling mud density probe A self-cleaning probe for a drilling fluid or drilling mud density-testing apparatus comprises an elongated tube through which pressured air is supplied to a nozzle disposed in the mud-immersed end of the tube. A cleaning plunger is normally disposed in a... | 11/24/1987 |
| 4694692 | Drilling fluid density measurement system A drilling fluid density measurement system uses a continuously operating bubble measurement system for an oil or gas well. A microprocessor correlates the signal output from a differential pressure transmitter connected to a pair of self-cleaning pressur... | 09/22/1987 |
| 4526035 | Device for measuring a pressure difference within a pulsed column The invention relates to a device for controlling the pressure within a pulsed column. The device comprises first and second dipping tubes respectively issuing into the column at the level of points P1 and P2, means for introducing a... | 07/02/1985 |
| 4485675 | Pneumatic fluid densiometer A device for determining the density of drilling mud by having one end of a float carried tube 8.34 inches below the surface of the mud. A constant flow of air is supplied to the other end of the tube. The pressure of the air entering the tube, when air b... | 12/04/1984 |
| 4422326 | Method of ascertaining the state inside melting furnace for radioactive waste A method of ascertaining the state inside a melting furnace of a radioactive waste, which method comprises: blowing a gas into a molten matter in the melting furnace by using at least two slender tubes disposed at an upper and lower points with a gap Ɗh ... | 12/27/1983 |
| 4419893 | Method for determining specific gravity of a liquid A method for determining the specific gravity of a liquid includes introducing a purge stream of a reference liquid into a column and introducing a first vapor purge stream into a first sensor located below the level of the reference liquid. Then a second... | 12/13/1983 |
| 4393705 | Specific gravity level gauge and method Disclosed is an apparatus which utilizes pipes of different lengths oriented vertically within the fluid of a reservoir which are constantly pressured with a gas source, normally air. Since the pipes are of different length, but the pressure is the same, ... | 07/19/1983 |
| 4307609 | Liquid density meter An apparatus for measuring the density of a liquid or of a suspension of solids in a liquid is disclosed. The apparatus comprises two pressure sensors adapted to be mounted in the liquid so that the two sensors are vertically at predetermined levels apart... | 12/29/1981 |
| 4006635 | Liquid level measuring process and indicator The present invention relates to a process and device for measuring the level and the specific gravity of a liquid e.g. liquified methane, contained in large-capacity tanks. The installation comprises two hydrostatic probes for spray a neutral gas into th... | 02/08/1977 |
