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| Number | Title | Issue Date |
| 7461542 | Funnel viscosimeter A Marsh funnel is equipped with a valve at the funnel outlet. The valve may be of the quick opening type selected from stem valves (internal of the funnel), ball valves, plug valves, flapper valves, butterfly valves, slide valves and the like. ... | 12/09/2008 |
| 7237431 | Apparatus and method for measuring viscosity An apparatus and methods for analysis of a petroleum product, specifically determining the viscosity of a sample, are disclose. The apparatus includes a sample reservoir for receiving a liquid sample and a pressure regulator for applying hyperbaric pressure to a sam... | 07/03/2007 |
| 7190639 | Method and apparatus for measuring fluid viscosity using electric conductance An apparatus uses electrical conductance to determine the start and stop times for viscosity measurements using efflux cups. An efflux cup and two probes are immersed and removed from the fluid. An electric current is applied between each probe and the efflux cup. A... | 03/13/2007 |
| 7188515 | Nanoliter viscometer for analyzing blood plasma and other liquid samples A microfabricated, a nanoliter capillary viscometer includes a first channel that is defined by a first channel-defining surface in a first substrate and a second channel defining surface in a second substrate. The progress of liquid through this first channel is mo... | 03/13/2007 |
| 7131318 | Viscometer A viscometer including a thermal block, a thermo device to control temperature of the thermal block, a temperature sensor to sense temperature of the thermal block, a capillary tube embedded in the thermal block such that the capillary tube is in thermal contact wit... | 11/07/2006 |
| 6990851 | Microfluidic viscometer Microfluidic devices, systems, and methods measure viscosity, flow times, and/or other flow characteristics within the channels, and the measured flow characteristics can be used to generate a desired flow. Multi-reservoir pressure modulator and pressure controller ... | 01/31/2006 |
| 6901861 | Ink viscosity measuring device, ink viscosity adjusting method and a device therefor, and a printing apparatus A cardboard sheet printing apparatus including: a rotating body that freely rotates inside an ink circulation passage through which ink flows, and a rotation-imparting assembly which is magnetically coupled with the rotating body outside the ink circulation passage ... | 06/07/2005 |
| 6711941 | Apparatus and methods for measuring extensional rheological properties of a material Apparatus and methods for evaluating the rheological properties of Newtonian and non-Newtonian liquids and melts employs the principle of capillary breakup following rapid stretching of the fluid between two plates. The apparatus includes opposed surfaces defining a... | 03/30/2004 |
| 6553325 | Method for dimensioning an elastic structure subjected to a fluid in motion The invention is a method for dimensioning or adapting an elastic structure immersed in a fluid in motion, the structure having a length Lt. The method comprises: a) the natural excitation modes of the structure and their number N are defined; b) for at l... | 04/22/2003 |
| 6474143 | Automatically monitoring density and viscosity of a liquid A drilling mud monitoring system includes a single measurement chamber which is filled with a predetermined quantity of drilling mud. The chamber is weighed to provide a value representative of the density of the drilling mud. The time needed for the cham... | 11/05/2002 |
| 5900539 | Device and method for determining rheological quality of non-newtonian liquids A method for evaluating rheological properties of certain non-Newtonian liquids employs the principle of a multiple forced flow of a single sample of the liquid through an orifice, thus effecting a significant elongation of the sample. The liquid is force... | 05/04/1999 |
| 5686659 | Fluid dose flow and coagulation sensor for medical instrument A method of determining whether a sample or a control has been applied to an instrument for measuring coagulation of a fluid by optically detecting when the fluid that has been applied to the instrument has passed a first and a second points, determining ... | 11/11/1997 |
| 5569843 | Unit used in an apparatus for measuring the viscosity of a fluid The disclosure herein describes a unit used in an apparatus for measuring the viscosity of a fluid contained in a recipient; the unit includes a vertically displaceable piston at the upper end of which is provided a lifting plate while the lower end is eq... | 10/29/1996 |
| 5456105 | Rheometer for determining extensional elasticity A method determining the extensional elasticity of a fluid includes the step of determining the shear viscosity of a fluid in a flow field where the shear rate of the fluid is substantially uniform. A valve indicative of the shear viscosity and extensiona... | 10/10/1995 |
| 5372034 | High solids paint viscometer The invention provides a viscosity cup with an upward extending tube or lip, which provides a cut off point for paint draining through an orifice, providing more consistent viscosity measurements.... | 12/13/1994 |
| 5008081 | Method and apparatus for automatic melt indexing Computer-controlled method and apparatus for automatic melt index testing, including a housing with a base carrying a heater block having a bore therein for receiving a metal cartridge. A cartridge carousel is rotatably carried on the base, and carries a ... | 04/16/1991 |
| 4856322 | Method and device for measuring the viscosity of an ink The invention relates to a method for monitoring the viscosity of ink in a continuous jet ink jet printer, which method comprises causing at least part of the ink to flow through a restricted orifice into a vessel and measuring the time taken to fill the ... | 08/15/1989 |
| 4662030 | Viscosity control A viscosimeter comprising a Zahn cup, a supply tank arranged to supply a liquid, the viscosity of which is to be measured, to the Zahn cup, a control mechanism operable to stop the supply of liquid to the Zahn cup once the latter has been filled to overfl... | 05/05/1987 |
| 4333336 | Apparatus for computing flow rate of thermoplastic material Disclosed is a method and device for automatically and instantaneously computing and displaying with high precision the flow rate of thermoplastic samples run in an extrusion plastometer in accordance with American Society of Testing Materials (ASTM) Meth... | 06/08/1982 |
| 4185493 | Viscosity measuring instrument A rheometer which is especially useful for measuring the viscosity of a heated coal-type material which undergoes phase changes at elevated temperatures, and which is of the type that includes a cylinder with a narrow exit and a piston for applying pressu... | 01/29/1980 |
| 4065959 | Portable viscometer apparatus A portable viscometer, used in conjunction with a belt mounted computer, for making field viscosity measurements and for taking samples of various liquids such as paint mixes, asphalt cements, liquid asphalts, asphalt, emulsions, etc. A disposable cup, ar... | 01/03/1978 |
