Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7530278 | Fluid flow blender and methods A flow blender device that includes a plurality of input flow conduits and a single output flow conduit. A variable sized orifice is positioned along at least one of the conduits for metering and controlling fluid flowing through the flow blender device. The variabl... | 05/12/2009 |
| 7444886 | Floating body flowmeter A floating body flowmeter having a measuring tube (1) which is positioned vertically and through which a substance (2) to be measured flows, in which tube a floating body (3) is arranged in order to determine the flow rate, the rise height (h) o... | 11/04/2008 |
| 7422028 | Apparatus for controlling and metering fluid flow A device for metering and controlling fluid flow includes a variable orifice and is configured to use a pressure sensor. The device includes a fluid flow conduit having at least one planar inner wall that extends along a portion of the fluid flow conduit length, and... | 09/09/2008 |
| 7377184 | Multipurpose centralized flow detector A non-intrusive flow detector consists of an optical sensor assembly that attaches non-obstructively and non-invasively to a fluid flow meter. The sensor monitors dial movement of a least flow dial or wheel and generates an electrical signal representative of a flow... | 05/27/2008 |
| 7357033 | Manual resuscitators with integral manometer A manometer integrated into a manual resuscitator includes a housing with a communication path, and a pressure gauge integrally forming part of the housing. A sensing chamber and an atmospheric chamber are separated by a diaphragm subject to distortion by differenti... | 04/15/2008 |
| 7325747 | Flow compensated control valve A fluid control system includes a valve and a restrictor. The valve is configured to regulate the proportion at which a first fluid and a second fluid are mixed together. Based on the pressure drop across the restrictor, the valve further regulates the overall flow ... | 02/05/2008 |
| 7302863 | Software correction method and apparatus for a variable orifice flow meter A method of improving the accuracy of a variable orifice flow meter that includes characterizing the flow coefficient of the flow meter orifice for different orifice openings and for different differential pressures. The method may be particularly useful with a flow... | 12/04/2007 |
| 7293471 | Flow meter for measuring fluid mixtures The present invention is directed to a flow meter that obtains the individual flow rates of gas, liquid hydrocarbons, and water in a predominantly gas-containing flowing fluid mixture. The flow meter comprises a water content meter (7) that provides a signal ... | 11/13/2007 |
| 7270143 | Offset variable-orifice flow sensor An offset variable orifice gas flow sensor is provided. The variable orifice gas flow sensor comprises two port portions. The central axes of these port portions are offset such that an interior surface of the port portions slope away from a flapper that separates t... | 09/18/2007 |
| 7213472 | Connecting piece for fluid lines A connector (3) is suggested, which is capable of connecting a fluid line (28) to a fluid technology device. A connection channel runs between a device connection (24) and a line connection (25) in the connector (3). The connector ... | 05/08/2007 |
| 7185939 | Hydraulic drive system for vehicle roofs The invention relates to a hydraulic drive system used for the covers of vehicle openings, in particular for vehicle roofs with a construction that can be opened. In said system, the actuator that is designed to displace the cover is supplied with a bulk current, wh... | 03/06/2007 |
| 7172557 | Spirometer, display and method A spirometer coupled to a manual resuscitator. An air tube in the spirometer has a converging section, a laminar flow section and a pressure recovery section. A microcontroller and a display of expiratory flow parameters is provided. ... | 02/06/2007 |
| 7131451 | Apparatus for controlling and metering fluid flow A device for metering and controlling fluid flow includes a variable orifice and is configured to use a pressure sensor. The device includes a fluid flow conduit having at least one planar inner wall that extends along a portion of the fluid flow conduit length, and... | 11/07/2006 |
| 7096744 | Software correction method and apparatus for a variable orifice flow meter A method of improving the accuracy of a variable orifice flow meter that includes characterizing the flow coefficient of the flow meter orifice for different orifice openings and for different differential pressures. The method may be particularly useful with a flow... | 08/29/2006 |
| 7082843 | Fluid flow measurement device The invention is directed to a device for obtaining flow rate measurements including a sensor assembly and a housing. The sensor assembly includes a body defining a first fluid flow passage having an inlet, an outlet, a flow restricting element in the first fluid fl... | 08/01/2006 |
| 7082842 | Software correction method and apparatus for a variable orifice flow meter A method of improving the accuracy of a variable orifice flow meter that includes characterizing the discharge coefficient of the flow meter orifice for different orifice openings and for different differential pressures. The method may be particularly useful with a... | 08/01/2006 |
| 7032463 | Respiratory flow sensor A respiratory tract differential-pressure flow sensor, including a tube having a distal end that is insertable into a respiratory tract, an interfering body disposed within the tube proximal to the distal end and having a first edge facing one end of the tube and a ... | 04/25/2006 |
| 7028560 | Method to linearly measure gas volume flow in ducts and flow sensor A method to linearly measure the flow of a gas in ducts, and a gas flow sensor using such a method are disclosed. In order to obtain a linear ratio between the differential pressure and the volumetric flow of a gas, a rectangular section elbow and a rectangular flex... | 04/18/2006 |
| 6968710 | Refrigeration compressor capacity limiting device A sonic nozzle is disclosed that is positioned between an evaporator and compressor in an air conditioning system. The sonic nozzle limits refrigerant flow rate to that allowed by sonic velocity at a throat area of the sonic nozzle. The sonic nozzle may have a by-pa... | 11/29/2005 |
| 6945123 | Gas flow sensor having redundant flow sensing capability A sensor for redundantly measuring gas flow has a housing suitable for being interposed in a gas flow conduit. The housing has an orifice through which the gas to be measured flows. A gas flow measuring, hot wire anemometer is positioned in the housing proximate to ... | 09/20/2005 |
| 6916424 | Method and apparatus for a hemodiafiltration delivery module This invention provides a method and apparatus for a hemodiafiltration delivery module that is used in conjunction with a UF controlled dialysis machine to enable hemodiafiltration therapy to be performed. The advantage is that one can fully utilize a current functi... | 07/12/2005 |
| 6898984 | Measuring apparatus to determine the flow of a fluid A measuring apparatus (1) for determining the flow (Q) of a fluid (2). The apparatus has a hollow body (3), with an inflow (4) and an outflow (5) for the fluid (2). A magnetic sample (6) is movably arranged in the hol... | 05/31/2005 |
| 6892586 | Measuring and controlling the flow of flowable materials A method of determining an inlet flow rate (Finlet) of a flowable material including passing an inlet stream of flowable material through a chamber (20) having an outlet aperture (100); measuring a first rate of change of quantity of materia... | 05/17/2005 |
| 6874374 | Flowmeter apparatus A flowmeter is described which has a retrievable housing conduit which is locatable within a conduit or pipe and which seals against the pipe so that fluid only flows through the housing conduit, and a flow restriction is created within the housing conduit to create... | 04/05/2005 |
| 6668665 | Gas level monitoring system and gas flow rate sensor used therein An in-line gas flow rate sensor includes a movable flow orifice and a fixed flow restrictor adjacent the flow orifice for changing the gas flow through the flow orifice. The flow orifice and the flow restrictor are formed so that each uniform increment of... | 12/30/2003 |
| 6619138 | Apparatus for dynamically adjusting size of an orifice to increase accuracy in measuring the rate of air flow A flow adapter for measuring the rate at which air flows into the brake pipe. The adapter includes a housing, a flow valve and a transducer. The primary passage of the housing contains a primary orifice and a secondary passage contains a secondary orifice... | 09/16/2003 |
| 6539813 | Throttle structure and flow meter incorporated with throttle structure A flow meter for measuring a flow rate of a fluid passing through a fluid passage is provided with a throttle structure disposed at the inside, and it is connected to the fluid passage. The fluid passes through a groove via expanded grooves formed on a su... | 04/01/2003 |
| 6508071 | Air conditioner and displacement control valve for variable displacement compressor A control valve is located in a variable displacement compressor incorporated in a refrigerant circuit. The control valve controls the displacement of the compressor in accordance with a pressure difference between a first pressure monitoring point and a ... | 01/21/2003 |
| 6405577 | Flow rate detector mechanism with variable venturi and exhaust gas sampling method using the same A flow rate detector mechanism using variable Venturi therein, comprising: a variable flow rate generator, comprising: a core 11; and a variable Venturi 12; wherein a throat (flow passage) cross-sectional area defined between the core and the venturi is a... | 06/18/2002 |
| 6196070 | Flow sensor with wide dynamic range An improved fluid flow measuring device having more nearly linear response characteristics over a wide range of fluid flow rates measures the force exerted on a fluid flow sensing element (21, 37, 41, 47, 55, 61) located in the fluid flow. The effective a... | 03/06/2001 |
| 5979247 | Flow sensor having a fixed resistance and a variable resistance A flow sensor which is used for measuring the flow rate of a gas is disclosed. The flow sensor comprises a flow tube for allowing a gas to be circulated therethrough, a resistance is arranged so as to go across the inside of the flow tube, and pressure po... | 11/09/1999 |
| 5970801 | Variable orifice flow sensor A variable orifice flow sensor includes a flow conduit member defining a flow orifice and fluidly connecting first and second fluid flow ports, a flapper of magnetizable sheet metal that is mounted in the conduit member by a hinge portion so that the flap... | 10/26/1999 |
| 5937970 | Compressed air lubricators A flow sensor of the disc type for a compressed air lubricator comprises a flexible elastomeric disc having a pair of radial channels formed in each of its major surfaces. The channels afford lines of weakness which enable the disc readily and progressive... | 08/17/1999 |
| 5880378 | Critical flow venturi with variable and continuous range A critical flow venturi with either a movable centerbody or a fixed replaceable centerbody is provided for fluid flow measuring or fluid flow control by changing the critical flow rate area of the venturi. The critical flow venturi and its associated cent... | 03/09/1999 |
| 5763792 | Respiratory flow sensor A respiratory flow sensor to be connected between a breathing tube and an endotracheal catheter, which has a flow channel, an orifice, which is formed by a foil recessed in the flow tube, in which an orifice flap is formed by an incision, and has connecti... | 06/09/1998 |
| 5747702 | Diagnostic device for hydraulic circuit A diagnostic device for a hydraulic circuit includes a flow transducer to provide an indication of flow rate, a pressure transducer to provide a signal indicative of pressure, and a temperature transducer to provide a signal indicative of temperature. Eac... | 05/05/1998 |
| 5698793 | Flow meters A flow meter comprises a divergent nozzle region 6 and a plug 10 which is axially displaceable within the nozzle region 6 under the influence of a flowing fluid. The plug 10 is guided, during displacement, by vanes 38 extending inwardly from the wall of t... | 12/16/1997 |
| 5691914 | Fluid flow measurement correcting system, and methods of constructing and utilizing same An apparatus for calculating fluid flow in a channel, comprising a probe member which detects fluid depth in the channel; a mechanism for measuring average fluid velocity in the channel; a mechanism for correcting the detected fluid depth based upon the m... | 11/25/1997 |
| 5672833 | Peak flow meter for measuring ventilatory capacity A peak flow meter has a body forming a chamber along which a piston can be moved against the force of a spring by a subject exhaling through an inlet into the chamber. A slot runs along a side of the chamber to allow the air to escape and a pointer is mov... | 09/30/1997 |
| 5665923 | Full range-high accuracy air flow sensing device An air flow sensing device comprised of rotatable spaced dampers, shafts to rotate the dampers, a counter-weight attached to a shaft biasing the dampers to a closed position with respect to air flow and pressure sensor means to determine the velocity of t... | 09/09/1997 |
