Class 73/437 - Immersion

Subclass of Class 73 - Measuring and testing
Definition: Devices involving the immersion of a solid in a liquid.
No. of patents: 38
Last issue date: 06/15/2010

Number	Title	Issue Date
7735366	Method and apparatus for measuring the volume of an animal paw Disclosed is an improved method for measuring the volume of an animal paw, suitable for use in a rat paw edema assay. Also disclosed is a novel apparatus for measuring the volume of liquid displaced by the insertion of an object into a liquid filled cup (1) w...	06/15/2010
7475595	Underwater weighing apparatus A portable underwater weighing apparatus is provided comprising a buoyant frame having sufficient buoyancy to support the apparatus and the weight of a person being weighed upon the surface of water, said frame defining a central opening therein; a support member at...	01/13/2009
7296466	Underwater weighing container and apparatus for measuring specific gravity An underwater weighing container for measuring specific gravity, requiring relatively a small amount of reference liquids for measurement and offering wide space for mounting specimens to be measured are provided. The underwater weighing container includes a tubular...	11/20/2007
7258007	Device for measuring the density and/or specific gravity of a liquid A device which is used to measure the density of a liquid, includes an enclosure (1) which is impervious to the liquid to be measured. The enclosure (1) has a rigid deformation-resistant casing housing at least one reference body (3) which is su...	08/21/2007
7236252	System and apparatus for measuring displacements in electro-active materials A device designed to apply uniaxial pressure to the surface of an electro-active material while simultaneously applying a current to the material under controlled temperature conditions and then measuring the displacement of the material by means of a laser interfer...	06/26/2007
7129426	Weight scale with hybrid graduation A weight scale with hybrid graduation includes an elastic element, a carrier mounted to the lower end of the elastic element, an indicator block mounted between the elastic element and the carrier, and a graduated housing for receiving the elastic element and the in...	10/31/2006
6860136	Method and apparatus for measuring physical properties of matter The invention determines density of a sample while the sample is immersed in a gaseous medium having variable density. The apparatus includes a chamber for containing the gaseous medium and the sample, means for selectively varying the density of the gaseous medium ...	03/01/2005
6848299	Quartz crystal microbalance with feedback loop for automatic gain control An analytical apparatus, such as a quartz crystal microbalance, comprises a piezoelectric sensor and an oscillator circuit, coupled to the sensor, to oscillate at a frequency substantially determined by a resonant frequency of the sensor, and to provide an output si...	02/01/2005
6817230	Systems and methods for determining the absorption and specific gravity properties of compacted and loose material including fine and coarse aggregates Methods, systems, and computer program products determine absorption, specific gravity, and/or porosity of construction materials undergoing analysis corresponding to different measurements of material samples divided from a “parent” construction material sample...	11/16/2004
6817243	Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods Methods of determining an apparent density of a sealant used to encase a material specimen during liquid displacement evaluations include: (a) providing a plurality of material reference samples in an assortment of dimensional ranges and geometrical shapes; (b) obta...	11/16/2004
6668647	Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods Water-resistant preformed resilient bags are applied to a porous material specimen having a coarse external surface to provide for more consistent measurement results in water displacement tests. The preformed bag is configured to collapse and substantial...	12/30/2003
6647764	Quartz crystal microbalance with feedback loop for automatic gain control An analytical apparatus, such as a quartz crystal microbalance, comprising a piezoelectric sensor and an oscillator circuit, coupled to the sensor, to oscillate at a frequency substantially determined by a resonant frequency of the sensor, and to provide ...	11/18/2003
6637265	Apparatus for measuring physical properties of matter The invention determines density of a sample while the sample is immersed in a gaseous medium having variable density. The apparatus includes a chamber for containing the gaseous medium and the sample, means for selectively varying the density of the gase...	10/28/2003
6629459	Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods Water-resistant preformed resilient bags are applied to a porous material specimen having a coarse external surface to provide for more consistent measurement results in water displacement tests. The preformed bag is configured to collapse and substantial...	10/07/2003
6615643	Systems and methods for determining the absorption and specific gravity properties of compacted and loose material including fine and coarse aggregates Methods, systems, and computer program products determine absorption, specific gravity, and/or porosity of construction materials undergoing analysis corresponding to different measurements of material samples divided from a "parent" construction material...	09/09/2003
6561025	Specific gravity measuring device A specific gravity measuring device can certainly and instantly measure specific gravity of various solid state substances through one measurement operation quite simply. The specific gravity measuring device includes a liquid bath, a first measuring port...	05/13/2003
6443007	Fluid for measuring volume, density and related properties of solid bodies In a method for measuring density and related properties by weighing a solid body while it is suspended in a fluid, there are significant advantages if the fluid has a) a density that is smaller than the density of water; b) a surface tension that is significa...	09/03/2002
6321589	Methods and apparatus for sealing a porous material sample for density determination using water displacement methods and associated surface conformal resilient compressible bags Water-resistant preformed resilient bags are applied to a porous material specimen having a coarse external surface to provide for more consistent measurement results in water displacement tests. The preformed bag is configured to collapse and substantial...	11/27/2001
6286368	Self-immersing wetting balance A wetting balance includes a load cell for suspending a specimen above a crucible containing a molten braze pool. A lift supports the crucible for vertical lifting thereof to effect an immersion cycle of the specimen in the pool. A controller operates the...	09/11/2001
6101874	Measuring the gold ratio of cast gold The present invention relates to a non-destructive method for measuring the ratio of gold in carats or the ratio of other components in a cast material. The invention also relates to a method for measuring a specific weight of a cast body including a repe...	08/15/2000
5614672	Apparatus for measuring the liquid contents of a tank Apparatus for measuring weight, level and or volume of a volatile liquid in a sealed container, comprising: a housing, capable of sustaining high pressure; a load cell, located within the pressure housing, mounted on an external pipe flange at the top of ...	03/25/1997
5606126	Apparatus and a method for automatically measuring the density of an object Apparatus for automatically measuring the density an object which comprises a first weighing device for weighing the object in a first medium which is dry, a second weighing device for weighing an object in a second medium which is wet and a robotic devic...	02/25/1997
5447063	Liquid density monitoring apparatus A liquid bulk density monitoring apparatus which is particularly suitable for monitoring suspended sediment levels has a plummet suspended from one end of a balance beam and submerged in a vessel containing a liquid to be monitored. A sensor detects tilti...	09/05/1995
5435182	Method and apparatus for determining at least one physical parameter of accumulator electrode plates A method for determining at least one physical parameter of accumulator electrode plates, such as the true plate thickness Pd, the apparent density Ds of the active material, the true density Dw of the active material, the...	07/25/1995
5410914	Measuring device for density of liquid or high-temperature melt without influence of surface tension The measuring device has bobs 10, 17 suspended from a weight 12 with wires 11, 16. The hook 13 of the weight 12 is hung from a suspensor thread 15 extending downwards from a balance 14. The weight 12 may be omitted by using the upper bob 10 for dead weigh...	05/02/1995
5076107	Apparatus and method for resultant-weight measuring system Apparatus and method are described for measuring and recording as a function of time the resultant-weight of a test object immersed in a fluid medium. The apparatus and method are particularly suitable for determining a change in a chemical and/or physica...	12/31/1991
4914962	Vibrating strip transducer A vibrating strip transducer, wherein a vibrating strip 54 mounted between a fixed mount 52 and a moveable mount 51 and under load 53 directly responds to a change in force applied to the strip with a change in the magnitude of stress in the strip. The ch...	04/10/1990
4873866	Method of hydrostatic weighing and kit The invention is a method of hydrostatic weighing of a human body and a kit for use in hydrosatic weighing. The method comprises filling with water and closing a container which the person being weighed can grasp, having the person being weighed grasp the...	10/17/1989
4813283	Density measuring apparatus A density measuring apparatus (densitometer) useful for rapid absolute determination of the density, the temperature dependence of density, partial volume and thermal expansivity of condensed matter, based on the hydrostatic method, employs an electronic ...	03/21/1989
4770041	Apparatus for determining specific gravity and density Apparatus for weighing a specimen while suspended in water to determine its specific gravity. A scale is mounted on a table. A rectangular frame having legs surrounding the scale is supported on the table. A liquid filled container is supported directly o...	09/13/1988
4630481	Method and instrument to estimate the weights of green trees and logs Method and apparatus to estimate the weight of the trees and logs in a stand of trees before harvesting to maximize the efficiency of aerial logging are disclosed. A hydrometer that has a chamber which accepts a small known volume core from the tree deter...	12/23/1986
4449391	Method for separating closed bolls of cotton by maturity A method for separating/classifying closed bolls of a given variety of cotton by maturity is disclosed. Harvested, unopened cotton bolls are immersed in a series of solutions having a specific gravity of less than one. The bolls of cotton are thus identif...	05/22/1984
4372405	Weight, volume or density measuring system Apparatus for determining the weight, density or volume of a solid body and the weight and density of a liquid. The apparatus comprises a capacitive transducer means and compensating means therefor, as well as electronic circuitry comprising computing mea...	02/08/1983
4320658	Weighing apparatus An apparatus suitable for determining the dry and submerged weights of a large volume of water-bearing food material on a more or less continuous basis. The determinations enable the calculation of the density of the food material and, therefore, its soli...	03/23/1982
4197273	Apparatus for controlling the directional solidification of a liquid-solid system The growth of a solid obtained by cooling a liquid solution is observed and controlled by measuring the variation in volume of the solid-liquid system at the time of solidification. The method is applicable to the control of oriented crystallization from ...	04/08/1980
4196618	Specific volume determining method and apparatus A specific volume determining method and apparatus is disclosed having a piston sealably engaged in a container cylinder with a precision bore sight tube sealably mounted on the piston. Fluid is filled in the closed assembly to a predetermined level on a ...	04/08/1980
4186608	Method and apparatus for verifying declared contents of contents of certain solids An apparatus and method are provided for verification of declared contents in mixed solids, blended textiles, certain pure solids, and other solid substances. The apparatus is assembled from laboratory items and utilizes liquids and instruments. The metho...	02/05/1980
3991619	Apparatus for measuring specific gravity An apparatus is provided for determining the specific gravity of a plurality of samples of solid water-insoluble materials which apparatus comprises a means for storing samples in spaced relationship, a means for weighing samples first in air and then in ...	11/16/1976

PatentStorm

Quotables

PatentStorm News

Class 73/437 - Immersion