31
Robert E Higashi, Robert G Johnson, Philip J Bohrer: Flow sensor. Honeywell, John P Sumner, February 26, 1985: US04501144 (163 worldwide citation)

A flow sensor comprising a pair of thin film heat sensors and a thin film heater is disclosed. A base supports the sensors and heater out of contact with the base with the sensors disposed on opposite sides of the heater and closely adjacent thereto.


32
Atul Bajpai, Richard W Marczewski, Melissa M Marek, Anil B Shrivastava, Charles S Amble, Robert H Joyce, Nanda Kishore, Steven J Ollanik: Method and apparatus for diagnosing machines. General Motors Corporation, Albert F Duke, January 15, 1991: US04985857 (162 worldwide citation)

A general purpose expert system architecture for diagnosing faults in any one of a plurality of machines includes a machine information database containing information on characteristics of various components of the machines to be diagnosed and a sensory input database which contains vibration data ...


33
Paul Romano: Coriolis mass flow rate meter having a substantially increased noise immunity. Micro Motion, Peter L Michaelson, June 19, 1990: US04934196 (155 worldwide citation)

Apparatus and accompanying methods for use therein for a Coriolis mass flow rate meter which is substantially immune to noise, and more particularly, to such a meter that is substantially unaffected by noise that occurs at substantially any frequency different from a fundamental frequency at which t ...


34
Czekajewski Jan A: Cardiac output computer. March 21, 1972: US3651318 (155 worldwide citation)

A method and apparatus for determining the rate of flow of a substance such as blood in a closed circulatory system whereby a detectable indicator substance is injected into the blood upstream of the heart and the density of that substance in the blood downstream measured and integrated in time to d ...


35
Lawrence C Lynnworth: Ultrasonic flowmeters using waveguide antennas. Panametrics, Kenway & Jenney, June 29, 1982: US04336719 (154 worldwide citation)

Waveguide antennas for ultrasonic flowmeters are described in which at least one pair of antennas is used to interrogate a flowing fluid. The waveguides are parallel, each pair defining a plane of interrogation which is parallel or nearly parallel to the flow.


36
Karl L Ginter, Victor H Shear, Francis J Spahn, David M Van Wie: Systems and methods for secure transaction management and electronic rights protection. Intertrust Technologies Corporation, Finnegan Henderson Farabow Garrett & Dunner L, September 20, 2005: US06948070 (153 worldwide citation)

The present invention provides systems and methods for secure transaction management and electronic rights protection. Electronic appliances such as computers equipped in accordance with the present invention help to ensure that information is accessed and used only in authorized ways, and maintain ...


37
Douglas J Zimmerman, Frank D Dorman: Electromagnetic flow meter. Medtronic, Terry L Wiles, Harold R Patton, July 5, 1994: US05325728 (148 worldwide citation)

An electromagnetic flow meter for measuring the flow of blood through a conduit. Flow rate is measured by applying an electromagnetic field around the conduit, with the moving electrolytic blood inducing a current that is sensed by electrodes. The flow meter includes a substantially "E"-shaped magne ...


38
Scott H Hammond, Ronald L Kirk, Eric R Francis: Digital power metering. TransData, Mueller and Smith, November 28, 1989: US04884021 (143 worldwide citation)

Method and apparatus for metering polyphase power sources in which cycles for each phase are sampled at each degree and converted to a binary representation of amplitude. Sampling commences with a zero cross-over and a first digital conversion provides range data for developing scaling factors which ...


39
Gerard Segeral, Peter Long, Ian Atkinson: Method and apparatus for measuring multiphase flows. Schlumberger Technology Corporation, Martin D Hyden, Keith G W Smith, Brigitte L Jeffery, January 7, 1997: US05591922 (141 worldwide citation)

A device for measuring flow rate of multiphase fluids such as oilwell effluents, containing liquid hydrocarbons, gas, and water includes first and second sections situated at a distance one from the other in the flow direction, each including a passage provided with structure such as venturis for in ...


40
James E Smith, Donald R Cage: Parallel path Coriolis mass flow rate meter. Micro Motion, Memel Jacobs Pierno & Gersh, January 1, 1985: US04491025 (141 worldwide citation)

A flow meter apparatus for measuring the mass flow rates of fluids passed through two essentially parallel, cantilever mounted U-shaped flow tubes where, instead of the fluid serially passing through one of the U-shaped flow tubes and then through the second U-shaped flow tube, the fluid is essentia ...



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