Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7409861 | Concentration detector A concentration detector is adapted to detect the concentration of a liquid fuel in a container. The concentration detector comprises a rotating mechanism positioned underneath the level of the liquid fuel and having a rotational center. A first float having a speci... | 08/12/2008 |
| 7404323 | Concentration detector and fuel supplier with said detector A concentration detector is disclosed, which is adapted to detect a concentration of a liquid fuel in a container. The concentration detector includes a rotating means positioned underneath a level of a liquid fuel and rotatable at an angle θ on a X-Y plane. The ro... | 07/29/2008 |
| 7028532 | Fuel property determination system A fuel property determination system for an internal combustion engine is comprised of a specific gravity detecting section which detects a specific gravity of fuel used in the engine and a fuel property detecting section which detects at least one of a cetane numbe... | 04/18/2006 |
| 6457357 | Fluid density measurement device A fluid density measurement device includes a float (12) and a weight (14), each mounted on links (16) for essentially vertical movement. A crank (22) is mounted above the float and weight and is connected to them,by a float link (24) and a counterweight ... | 10/01/2002 |
| 5824885 | Method intended for use in anaesthetic systems for identifying anaesthetics In order to keep a patient from being administered an incorrect anaesthetic, an erroneous concentration of an anaesthetic or a mixture of anaesthetics, an anaesthetic system can be equipped with a device for identifying anaesthetics in anaesthetic system.... | 10/20/1998 |
| 5623251 | Device to verify the identity of a fluid for proper selection of storage vessel Disclosed is a device used to verify the identity of a selected fluid before permitting the selected fluid to be introduced into a storage vessel containing a liquid of known specific gravity. The device includes a container constructed from connecting wa... | 04/22/1997 |
| 5532679 | Oil spill detection system An oil spill detection system to detect and track oil spills and transmit data to a remote monitoring center comprising a buoyant detection platform including at least one detection sensor to detect the presence of hydrocarbons in the water adjacent the b... | 07/02/1996 |
| 5522262 | Disposable specific gravity tester of liquids and use thereof A disposable specific gravity tester of liquids such as urine comprising a form-maintaining, flexible or resilient, transparent plastic pipet-type tube, one end of which is integrally closed to form a self-contained bulb, the other normally open end of wh... | 06/04/1996 |
| 5284056 | Hydrometer for determining coolant fluid antifreeze concentration A hydrometer for determining coolant fluid antifreeze concentration includes a housing having a pair of spaced openings for inflow and outflow of coolant fluid into and from the housing, a transparent view dome mounted in flow communication with the housi... | 02/08/1994 |
| 5181536 | Coolant corrosiveness indicator A fluid sensor for heat exchanger system includes a supporting device such as a tubular hose fitting for mounting the sensor in the system so that heat exchanging fluid circulated in the system comes into contact with the sensor. A window or sight glass i... | 01/26/1993 |
| 5045836 | Vehicle anti-freeze monitor A vehicle anti-freeze monitor for monitoring the capability of the vehicle's coolant mixture in the cooling system of the vehicle to resist freezing. The monitor includes a light emitting diode, a reed switch for coupling the indicator to a source of elec... | 09/03/1991 |
| 4989453 | Battery condition indicator A battery condition readout device is disclosed. A series of slides of varying densities float or sink according to the amount of charge. An optical system permits slide position to be seen at a point external to the battery.... | 02/05/1991 |
| 4987778 | Comparative temperature compensating specific gravity test apparatus A comparative temperature compensating specific gravity test apparatus is disclosed including an indicator float element that has a predetermined specific gravity and is freely suspended in a homogeneous test liquid. The float element includes pliable, se... | 01/29/1991 |
| 4967595 | Aviation fuel sample tester A device (10) for testing samples of aviation fuel drained through a drain valve of an aircraft fuel system is disclosed including a pin (22) upstanding from the bottom (18) and extending concentrically with the sidewall (16) out of and above the inlet (2... | 11/06/1990 |
| 4887903 | Apparatus for reading height of measurement column An apparatus for determining the position of an object in a vertical column includes a sighting window mounted on a slide movable along a vertical rail. An endless chain extends around a pair of cogged wheels rotatably mounted on rotating shafts at opposi... | 12/19/1989 |
| 4736628 | Testing device for car battery and radiator A box-like housing which is enclosed to form a chamber. The chamber is partitioned by wall-like structure and further forms a plurality of channels in which a plurality of balls having various densities are contained within the channels. Measuring fluid f... | 04/12/1988 |
| 4702109 | In-line hydrometer A hydrometer that measures the specific gravity of fluid in channels (36) of a hydrometer body (10). The specific gravity is determined according to the buoyancy of balls (40) that are located in each channel. Lenses (42) are provided in body (10) to aid ... | 10/27/1987 |
| 4697454 | Combined hydrometer for testing the battery and radiator fluid A combined hydrometer for measuring the specific gravity of a radiator fluid and a battery fluid including a fluid chamber having a transparent front window, a substantially horizontal axis in the chamber, an upper battery fluid scale having readings corr... | 10/06/1987 |
| 4649747 | Coolant line hydrometer A hydrometer unit permanently connected in an engine coolant line enables an immediate visual check on the adequacy of the anti-freeze constituent, such as ethylene glycol, in the system. The hydrometer includes a coolant receiving chamber having a transp... | 03/17/1987 |
| 4629398 | Oil detecting switch for controlling a pump The oil detecting switch includes a light oil float switch, a water float switch and a heavy oil float switch. When the light oil float switch is closed, a relay is activated energizing a light oil indicator light and its associated coil. The coil is part... | 12/16/1986 |
| 4590800 | Specific gravity indicator A specific gravity indicator used for measuring the specific gravity of an aqueous liquid, which is a shaped article comprising a styrene homopolymer and a styrene-butadiene elastomer and having a specific gravity of 1.005 to 1.035. By the specific gravit... | 05/27/1986 |
| 4515268 | Ball case for storing and organizing gage balls A ball case for storing and organizing gage balls of a plurality of predetermined sizes. The ball case has a housing including a base member having at least one and preferably three sloping surfaces. A plurality of partial spherical cavities are formed in... | 05/07/1985 |
| 4353253 | Device for measuring the density of fluids A device for measuring the density of fluids comprises two float elements of unequal density distribution pivotally mounted on a common axis about which they rotate in opposite directions with change of density of the fluid in which they are immersed. The... | 10/12/1982 |
| 4345994 | Method for monitoring the efficiency of raw material beneficiation apparatus A method for determining the efficiency of float-sink raw material separation units which achieve separation by specific gravity sorting of raw material in particle form introduced to a liquid bath. The efficiency is determined by introducing to the bath,... | 08/24/1982 |
| 4237096 | Device for multiple analyses The invention relates to a device and a method for carrying out simultaneously multiple analyses in a liquid medium. The device comprises a compartment for introducing liquid, communicating through a distribution channel with separate analysis compartment... | 12/02/1980 |
| 4142419 | Sensing device for liquids A device for indicating changes in the specific gravity of a liquid comprises first and second floats adapted to float on the surface of the liquid, the float having different shapes and/or densities so that the depth of the floats in the liquid varies in... | 03/06/1979 |
| 4126044 | Antifreeze tester A specific gravity tester for antifreeze solutions including a transparent tube, a bulb on one end, and a sample-collecting hose on the other end; the transparent tube being of molded plastic and defining an interior guideway with broad, flat surfaces hav... | 11/21/1978 |
| 4103700 | Aviation fuel grade monitor A method and apparatus for monitoring the density of a flowing fluid and controlling the flow thereof. The apparatus comprises at least one vertical tube, having an inlet at the bottom and an outlet at the top for establishing a fluid flow through the tub... | 08/01/1978 |
| 3966175 | Apparatus for introducing particulate material into a container Apparatus is disclosed for disposing of radioactive waste materials by placing them into a steel drum together with cement and water, mixing the contents, and then storing the drum for a period of time to permit partial decay of radioactive materials. Als... | 06/29/1976 |
