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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 8156822 | Force measuring valve assemblies, systems including such valve assemblies and related methods Methods of evaluating a fluid condition may include stroking a valve member and measuring a force acting on the valve member during the stroke. Methods of evaluating a fluid condition may include measuring a force acting on a valve member in the presence of fluid fl... | 04/17/2012 |
| 7546778 | Flow meter An axial flow meter includes a housing including a generally elongated body with a continuous internal bore. Two spindles are mounted parallel to one another in the housing. Each spindle has a blade on the exterior surface of the spindle. Blades on each of the two s... | 06/16/2009 |
| 7364051 | Remote actuator for ball injector An electrical motor rotatably drives a motor shaft, and a helical rib radially extends from the shaft. The helical rib supports a number of balls, and forms a channel to accommodate the balls. The balls are dropped from the helical rib when the balls reach the botto... | 04/29/2008 |
| 7257999 | Liquid dispenser with volume meter A liquid dispenser comprises a sprayer device and volume meter connected together to form an integral unit that prevents the sprayer device and volume meter from being disconnected without damaging the dispenser. The volume meter has an inlet end portion and a gauge... | 08/21/2007 |
| 7245230 | Dual magnetic field sensor unit The present inventions relate to a method and apparatus for adding Automatic Meter Reading (AMR) capabilities to utility meters that generate a magnetic field comprising magnetic flux that varies proportionally with the rate of resource consumption. The apparatus co... | 07/17/2007 |
| 7194902 | Apparatus and method for formation evaluation A viscometer-densimeter for a down hole tool positionable in a well bore penetrating a subterranean formation is described. The formation contains at least one fluid therein. The down hole tool is adapted to convey at least a portion of the fluid to the viscometer-d... | 03/27/2007 |
| 7108010 | Check valve position detector A position detector for a check valve, including a bracket with a support arm, adjustable securing members adapted to rigidly secure the bracket to a check valve arm, a tilt switch, a connector, a circuit status indicator, a wire connector for both the tilt switch a... | 09/19/2006 |
| 7028561 | Fuel dispenser fuel meter error detection device, system and method A flow switch used in conjunction with a fuel meter in a fuel dispenser to determine when fuel is flowing. A flow switch can only be activated if fuel is flowing through the flow path of the flow switch. If fuel is flowing as indicated by the fuel flow switch, but t... | 04/18/2006 |
| 7024945 | Flow sensing apparatus A flow sensing apparatus for detecting fluid flow rate and direction is described. The flow sensing apparatus includes a flow-responsive element projecting into the fluid flow path, and a position sensor which detects the degree and direction of any change in positi... | 04/11/2006 |
| 7017425 | Bucket wheel assembly for fluid flow meters An improved bucket wheel assembly with a center frame, having a plurality of fingers extending therefrom. In each of the fingers a slot is formed. The assembly also includes a plurality of conically shaped hollow cups. The hollow cups each have a wall that forms an ... | 03/28/2006 |
| 7001510 | Siphon hose with gallon counter A siphon to be used when removing water from a personal aquarium for cleaning purposes. The water passes through propellers or flaps of a present friction, which monitor the volume flowing out of the aquarium. The amount of water is displayed on an exterior gauge so... | 02/21/2006 |
| 6997064 | Fluid metering and control device A fluid measuring device that displays fluid volume usage against fluid volume limits and a fluid control device that stops fluid delivery when the fluid volume limit is reached. ... | 02/14/2006 |
| 6935191 | Fuel dispenser fuel flow meter device, system and method A flow switch used on conjunction with a fuel flow meter in a fuel dispenser to determine when fuel flow rate signals form a fuel flow meter should be ignored in the calculation of flow rate and/or volume of fuel dispensed. An inferential fuel flow meter may be used... | 08/30/2005 |
| 6889564 | Peak flow meter A peak flow meter for measuring a peak flow or air exhaled by a patient. The preferred peak flow meter includes a substantially hollow housing having a top portion, a bottom portion, an air inlet and at two air outlets. A flow restriction is disposed within the hous... | 05/10/2005 |
| 6881507 | Method and apparatus for measuring the mass flow of hydrogen in a fuel cell The mass flow of hydrogen fuel in the anode loop of a hydrogen fuel cell is measured using a rotating flow meter. The flow meter includes a bladed rotor mounted for rotation within a tube disposed in the stream of hydrogen fuel flowing through the anode loop. A magn... | 04/19/2005 |
| 6604434 | Method and apparatus for determining the direction and rate of a rotating element The present invention provides a device for measuring both the magnitude of rotation of a rotating magnetic field as well as the direction of rotation of a rotating magnetic field. The present invention may be used to measure the magnitude and direction o... | 08/12/2003 |
| 6538433 | Method and apparatus for non-contact measuring of metal bed parameters In a method and device for measuring at least one parameter of a metal bed, measuring is obtained by a magnetic field being generated from one side of the metal bed so that eddy currents are generated in the metal bed as the metal bed moves relative to th... | 03/25/2003 |
| 6367336 | Process mass flow apparatus and method for measuring the mass flow of powdered and granulated solids as well as the accumulated weight of material passed during a specified time A process mass flow apparatus for measuring the mass flow rate of a powdered, granulated or otherwise substantially divided process solid, seeds, grains, or similar particulate materials includes a process material inlet, a process material outlet, a meas... | 04/09/2002 |
| 6032540 | In-line, field adjustable irrigation flow indicator for high, normal and low flow rates An in-line flow meter for use in drip irrigation systems which provides a field adjustable, infinitely variable visual flow indication of both high and low flow rates above and below a field adjustable normal flow rate is provided by means of a drag paddl... | 03/07/2000 |
| 5945608 | Hall effect fluid flow switch and flow meter A fluid flow monitoring system comprised of a permanent magnet mounted on a bendable spring blade that provide an output from a Hall effect transducer as the permanent magnet is deflected toward or away from the transducer. The permanent magnet can be mou... | 08/31/1999 |
| 5932814 | Photo detector bending beam flow switch and flow meter A photo detecting flow sensing bending beam fluid flow switch and flow meter system having blocking targets that selectively block the optical path from an emission source to a photodetector. The device provides a system which is very sensitive to fluid f... | 08/03/1999 |
| 5847288 | Photo detector bending beam flow switch and flow meter A photo detecting flow sensing bending beam fluid flow switch and flow meter system having blocking targets that selectively block the optical path from an emission source to a photodetector. The device provides a system which is very sensitive to fluid f... | 12/08/1998 |
| 5787919 | Pressure differential indicator with fire damper A pressure differential indicating apparatus has a wall duct with first and second ends, first and second flange like mounting plates respectively disposed around and attached to the first and second ends, a low speed airflow indicator mounted at one of t... | 08/04/1998 |
| 5767419 | Hall effect fluid flow switch and flow meter A fluid flow monitoring system comprised of a permanent magnet mounted on a bendable spring blade that provide an output from a Hall effect transducer as the permanent magnet is deflected toward the transducer. The permanent magnet can be mounted to direc... | 06/16/1998 |
| 5681999 | Method and apparatus for measuring dry particles A method and apparatus for the continuous determination of the flow rate and/or total weight of dry particles, measuring the speed imposed to a movable member by dry particles falling thereon.... | 10/28/1997 |
| 5649449 | Method and apparatus for determining the instantaneous operation conditions of a centrifugal pump In the disclosed method of determining the current or instantaneous operating conditions of a centrifugal pump, the radial forces impressed on the impeller shaft by the operatively rotating pump impeller are measured at a shaft-supporting bearing disposed... | 07/22/1997 |
| 5589643 | Across the wall pressure differential indicator A pressure differential indicating apparatus having a wall duct with first and second ends, first and second flange like mounting plates respectively disposed around and attached to the first and second ends, and a low speed airflow indicator mounted at o... | 12/31/1996 |
| 5581041 | Apparatus for measuring flow of granular particles in conduit A blade device in a helix configuration suspended in a conduit means flowing full of granular materials such as crushed coal to rotate with the flow thus indicating by a turning or electrical output device both the rate and accumulated volume of flow of t... | 12/03/1996 |
| 5456121 | Pivotable vane flowmeter with capacitive position sensor A pivotable vane flowmeter comprises at least one pivotable vane disposed pivotably about a pivot axis parallel to the the direction of fluid flow and experiencing a fluid dynamic torque created by the fluid flow, a bias spring or counter-weight providing... | 10/10/1995 |
| 5445034 | Method of measuring the pressure of a gas in a gas accumulator, and a gas accumulator for carrying out the method Pressure of a gas in a gas accumulator coupled to a fluid circuit is measured in a system involving separating gas from pressure fluid in a gas accumulator by a separating element, measuring pressure of the pressure fluid with a pressure detector coupled ... | 08/29/1995 |
| 5413112 | Expiratory flow measuring device A device for measuring the maximum flow rate of a single forced expiration, comprises an elongated hollow body with inlet and outlet ends, a vane mounted to a shaft and rotatable within the body from a defined rest position, and an indicator to indicate m... | 05/09/1995 |
| 5406979 | Valve and sensor arrangement A valve and sensor arrangement includes a valve which has a valve member. A sensor such as a sensor for detecting a flow of water through the valve is provided within the valve member and is preferably aligned with a turning axis of the valve member. The ... | 04/18/1995 |
| 5383470 | Portable spirometer The invention is a portable spirometer for measuring the respiration rate of a patient. In detail, the invention includes a housing having a top and bottom, and first and second ends with an air passage extending therethrough. An air flow sensing member i... | 01/24/1995 |
| 5381698 | Flow-responsive apparatus The disclosed flow monitoring apparatus has a flow-varied sensing capacitance and an inductor in a series-resonant circuit that modulates the frequency of an oscillator. In one apparatus, the sensing capacitance comprises a flow-activated vaned rotor whos... | 01/17/1995 |
| 5379650 | Differential pressure sensor for respiratory monitoring A differential pressure sensor for measuring respiratory gas flow including a tubular housing containing a diametrically-oriented, longitudinally extending strut containing first and second lumens having longitudinally-spaced pressure ports opening into r... | 01/10/1995 |
| 5343743 | Asymmetrical displacement flowmeter An asymmetrical displacement flowmeter comprises a streamlined body or assembly 1 which floats or is submerged in liquid 3 and is subjected to frictional and dynamic pressure forces caused by liquid flow and tilts about axis 9 near the leading end of the ... | 09/06/1994 |
| 5323645 | Device to investigate the flow movement in cylindrical components A device to investigate the flow movement in cylindrical components of reciprocating piston internal combustion engines, which flow movement is generated by a flow-guiding system located, as seen in the flow direction, upstream of the cylindrical componen... | 06/28/1994 |
| 5277195 | Portable spirometer A portable hand-held spirometer capable of being accommodated in a pocket or handbag, comprising a chassis, an enclosed curved passageway in communication with the chassis including an inlet, for receiving the forced expiration of the user, and an outlet,... | 01/11/1994 |
| 5233867 | Lever-operated dynamic fluid flow sensing system A dynamic fluid flow measurement apparatus is intended to be connected to a relative reference member, such as a marine vessel. The apparatus preferably includes a base member, a lever mechanism movable relative to the base member for transmitting force c... | 08/10/1993 |
| 5189918 | "Null" flow sensor A flow sensing device includes a semiconductor substrate 31 and a pivoted beam 1. Below one half of the beam is a channel 7 running throughout the substrate 31, and below the other half of the beam is a cavity 8. During operation, a differential force exi... | 03/02/1993 |
