| Patent Number |
Title Of Patent |
Date Issued |
| 6508116 |
Water bike equipped with speed meter |
January 21, 2003 |
| A water bike equipped with a speed meter wherein a speed meter sensor 1 including a coil for generating a magnetic flux and electrodes disposed at positions vertical to both flowing direction of a fluid and direction of the magnetic flux, and for measuring the speed of the water bike on |
| 5677496 |
Electromagnetic flow meter removing influence of fluctuation in direct-current offset voltage |
October 14, 1997 |
| An electromagnetic flow meter which calculates the electric conductivity of a fluid based on the ratio of an output signal generated when electrodes are grounded through short-circuit resistors Rs.sub.1, Rs.sub.2 to an output signal generated when the electrodes are not grounded, and mor |
| 5625155 |
Electromagnetic flowmeter |
April 29, 1997 |
| An electromagnetic flow meter capable of measuring the flow of a fluid flowing through a conduit irrespective of whether the conduit is full of the fluid. A ratio of the output of a sensor disposed on the side of the conduit and obtained when a coil disposed above the conduit is energize |
| 5583299 |
Conduit for an electromagnetic flowmeter using magnetic poles as ground electrodes |
December 10, 1996 |
| A pair of electrodes and a pair of magnetic poles are mounted to a resin-made conduit body with each of those parts partly exposed to the lumen. The magnetic poles are formed by an electrically conductive material and serve also as ground electrodes by being connected to ground. The |
| 5524493 |
Electromagnetic flowmeter |
June 11, 1996 |
| An electromagnetic flow meter capable of measuring the flow of a fluid flowing through a conduit irrespective of whether the conduit is full with the fluid or not. A ratio of the output of a sensor disposed on the side of the conduit and obtained when a coil disposed above the conduit is |
| 5369999 |
Non-full state detecting apparatus and method |
December 6, 1994 |
| A non-full state detecting apparatus comprises an upper excitation coil disposed above the conduit, a lower excitation coil disposed below the conduit, a sensor provided on the side of the conduit for producing an output corresponding to the fluid when each of the coils is excited, a |
| 5335553 |
Fluidic gas meter provided with a printed wiring board |
August 9, 1994 |
| A fluidic gas meter including a flow path structure provided with a fluidic element, a cut-off valve, a pressure switch, a flow sensor, a piezoelectric film sensor, an electronic circuit unit, and a wiring board serving as a mother board and having a function of lead wires. Each of the |
| 5218872 |
Fluidic flowmeter for use with disturbed fluids |
June 15, 1993 |
| A fluidic flowmeter is located downstream of a valve. A wire gauze or net having small meshes is located on the upstream side of a nozzle forming the inlet to the fluidic element to stabilize flow. |
| 4969363 |
Electromagnetic flowmeter capable of simultaneous measurement of flow rate and conductivity of f |
November 13, 1990 |
| In an electromagnetic flowmeter one of two electrodes mounted on a measuring pipe is impressed with an electrical pulse synchronous with the switching of an excitation currrent, thereby detecting the voltage drop across the electrical resistance of a fluid, such that both the conduct |
| 4856345 |
Method and apparatus for making compensation for DC offset voltage generated in aplifying circui |
August 15, 1989 |
| In magnetic induction flow measurement in which a flow rate of a fluid is measured by a DC magnetic field having a periodically reversed polarity, an apparatus is used to compensate a DC offset voltage generated in an amplifying circuit in an electromagnetic flowmeter in which a signal |
| 4795267 |
Calorimeter using remanence type electromagnetic flowmeter |
January 3, 1989 |
| A calorimeter using a remanence type electromagnetic flowmeter includes a core made of a semi-hard or hard magnetic material and having a property in which a remanent magnetic flux density is varied in proportion to a temperature, a coil excited intermittently to magnetize the core, a |
| 4755703 |
Electric motor |
July 5, 1988 |
| The invention relates to improvement of a motor with a rotor including a permanent magnet. The motor comprises a yoke of soft magnetic material, a plurality of field poles each having a field core of semi-hard magnetic material and a pole piece of soft magnetic material, a plurality of c |
| 4736635 |
Electromagnetic flowmeter |
April 12, 1988 |
| An electromagnetic flowmeter includes a cylindrical flow path, an even number of magnetic poles disposed on the periphery of the cylindrical flow path by equally dividing the circumference thereof, a plurality of cores having one ends respectively being in contact with the even number of |
| 4716769 |
Radial field electromagnetic flow meter |
January 5, 1988 |
| A radial field electromagnetic flow meter includes a radial magnetic flux generator, a magnetic device surrounded by a fluid passage for fluid to be measured and electrically insulated magnetic poles separately positioned on a center line of the fluid passage, a tubular part surrounding |
| 4601209 |
Electromagnetic flowmeter of the residual magnetism type |
July 22, 1986 |
| An electromagnetic flowmeter has identical exciting coils coupled to portions which exhibit residual magnetism. A control circuit delivers short durations of current to each coil such that the current polarity in each coil determines the polarity of the magnetic flux across the conduit |
| 4409846 |
Electromagnetic flow meter |
October 18, 1983 |
| An electromagnetic flow meter with less power consumption in which an instantaneous pulsate current with alternately changing polarity at given intervals is fed into an exciting coil, and a velocity of flow of fluid is calculated by using a voltage produced between electrodes in accordan |
| 4306457 |
Liquid meter comprising a circuit for reducing a detection error resulting from a variable flow |
December 22, 1981 |
| A meter for a liquid, such as water, comprises a measuring circuit (55) for measuring those measuring periods in response to a detection pulse sequence resulting from rotation of a body (30) rotated by the liquid, each of which may be defined either by a period of one complete rotation |
