Class 73/861.64 - Inlet or outlet structure

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein specific details of the converging
No. of patents: 25
Last issue date: 04/29/2008

Number	Title	Issue Date
7363813	Temperature and moisture probe A probe for measuring the temperature and moisture of a gas has an aspirated flow passage with a configuration that causes the gas to have turbulent flow and, therefore, to mix. A dry bulb thermometer and a wet bulb thermometer positioned in the flow passage downstr...	04/29/2008
7320252	Flow meter using an expanded tube section and sensitive differential pressure measurement A method and apparatus for measuring the flow rate of a fluid within tubing disposed within a downhole wellbore. The present invention provides an inverse Venturi meter inserted within tubing with an enlarged inner diameter portion. Pressure differential is measured...	01/22/2008
7137567	Thermostat calibration device A pneumatic thermostat calibration device with a removable cover to protect the sensor needle from clogging and/or damage and the user from needle induced injury. The pneumatic thermostat calibration device should also be sized to fit in the pocket of a user. The pn...	11/21/2006
7107860	Flow meter using an expanded tube section and sensitive differential pressure measurement A method and apparatus for measuring the flow rate of a fluid within tubing disposed within a downhole wellbore. The present invention provides an inverse Venturi meter inserted within tubing with an enlarged inner diameter portion. Pressure differential is measured...	09/19/2006
7044434	High recovery sonic gas valve A high recovery sonic gas valve design with the inlet flow entering transverse and orthogonal to the outlet flow is presented. The configuration cancels the effects of the inlet flow entering orthogonal to the axis of the nozzle and diffuser. The inlet passage is cu...	05/16/2006
6993979	Multiphase mass flow meter with variable venturi nozzle An insert device for narrowing a throat of a Venturi based multiphase flow meter is shaped to be inserted in the throat. The insert comprises an entrance window and an exit window for a radiation beam generated at a periphery of the throat. The insert allows pressur...	02/07/2006
6715367	Univer plus mass air flow meter Improvement in a mass air flow meter having an elongated hollow body having a venturi member therein, the improvement comprising channels formed in the outside surface of the venturi member, lands defined by such outside surface which bear against the inside surface...	04/06/2004
6601000	Device and method for volume determination A device for conveying a medium from a container to a tank and for determining the quantity of the medium, having a conduit between the container and the tank, a conveying device connected to the conduit and a device for separating gas from the medium, th...	07/29/2003
6467359	Mass air flow meter Improvement in a mass air flow meter having a static pressure manifold disposed upstream from an air flow path for sample air and capable of accumulating a volume of air therein, the flow path constructed to receive an air flow transducer, the static pres...	10/22/2002
6332111	Method and system for measuring multiphase flow using multiple pressure differentials An improved method and system for measuring a multiphase flow in a pressure flow meter. An extended throat venturi is used and pressure of the multiphase flow is measured at three or more positions in the venturi, which define two or more pressure differe...	12/18/2001
5898108	Evaporative emission tester An evaporative emission tester is used to evaluate the integrity of a vehicle's evaporative emission control system, including determining the system's purge capability. The emission tester performs a purge flow test to determine whether fuel vapor stored...	04/27/1999
5739429	Powder coating system incorporating improved method and apparatus for monitoring flow rate of entrained particulate flow A system for monitoring the flow rate of particulate material entrained within an air stream includes a feed hopper providng a source of the particulate material, and a hose for conveying the particulate material within the air stream. A pump draws the pa...	04/14/1998
5616841	Flow metering device for landfill gas extraction well A metering pipe for a landfill well includes an upstream segment and a downstream segment. A coupling having an orifice plate positioned therein surroundingly engages both segments. Specifically, the segments are advanced into the coupling toward each oth...	04/01/1997
5426975	Method and apparatus for determining the total flow rate in a ventilation installation A method and apparatus for determining the total flow rate of air flowing through a ventilation installation with a free suction fan (15) is described. The flow rate or a corresponding pressure is determined by measurement of the partial flow rate or a co...	06/27/1995
5374013	Method and apparatus for reducing drag on a moving body A method of and apparatus for reducing drag produced by relative air movement on a moving body are disclosed. The method includes the steps of modifying a rear air pressure behind a rear of the body such that the rear air pressure is increased, wherein th...	12/20/1994
5063787	Venturi arrangement The present invention is directed to a venturi arrangement for use in measuring the flow rate of a fluid passed through a pipe bearing a venturi wherein the drawbacks associated with prior configurations have been ameliorated. The novel venturi arrangemen...	11/12/1991
4974452	Homogenizing and metering the flow of a multiphase mixture of fluids It is often desirable to meter multiphase fluid flow in pipes (e.g. bore holes). In order to obtain reliable/accurate flow rate measurements it is known to incorporate obstructions in the flow path to cause homogenization. A non-obstructive method of homo...	12/04/1990
4649760	Method and apparatus for controlling flow volume through an aerosol sampler A volume flow control device for an aerosol sampler is disclosed. The device includes a mechanism for drawing the aerosol through the sampler. A critical flow venturi is disposed downstream in the sampler for maintaining a predetermined volume flow of aer...	03/17/1987
4644800	Annular venturi flow measuring device A reduced length venturi type flow measuring device having a peripheral flow restricting surface 22, 30, 20 and a central hub 40 with flow restricting surfaces 42, 48, 52. Anti-spin vanes 60 support the hub. Pressure taps 60, 62 permit flow measurement, a...	02/24/1987
4528847	Flow metering device with recessed pressure taps A flow metering device of the type operative for producing a pressure differential comprises a shaped tubular member having sequentially disposed inlet, converging, and throat sections, and a downstream diverging section for energy recovery. Inner annular...	07/16/1985
4516434	Flow metering device with low energy loss A venturi-type fluid flow metering device is operative with minimum fluid energy losses and is adapted for construction in reduced lengths. The device comprises inlet, converging, throat and downstream diverging sections, and pressure sensing taps are pro...	05/14/1985
4506594	Fluid flow control apparatus and method A fluid flow control apparatus and method wherein a pair of output signals from a pair of fluid flow sensors having differing characteristics are blended according to a preselected law to produce a third signal controlling fluid flow....	03/26/1985
4324143	Single path adjustable flowmeter A low pressure drop air flowmeter (10) for an automotive engine is disclosed. The meter includes a main air flow passage (26), a relatively small venturi tube (28) receiving a portion of the air flow, a pressure port (74) for sensing stagnation pressure i...	04/13/1982
4164144	Fluid flowmeter A low pressure drop air flowmeter for an automotive engine is disclosed. The meter includes a main air flow passage, a relatively small venturi tube receiving a portion of the air flow, a pressure port for sensing stagnation pressure in the main passage, ...	08/14/1979
4050306	Method and apparatus for measuring pressures A pair of pressure sensing probe tubes are placed in the fan discharge of a turbofan engine, aft of the outlet guide vanes (OGVs) the tubes being circumferentially spaced by a fraction of the OGV pitch. A comparing means receives both pressures sensed by ...	09/27/1977

PatentStorm

Bizarre Patents

PatentStorm News

Class 73/861.64 - Inlet or outlet structure