Quotables
"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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 |
| 4253340 | Unitary electromagnetic flowmeter A highly compact electromagnetic flowmeter unit interposable between the flanged ends of upstream and downstream line pipes for metering fluid passing through the line, the unit being subject to compression by these flanged ends to effect a fluid seal. Th... | 03/03/1981 |
| 4236411 | Electromagnetic flowmeter An electromagnetic flowmeter having a flow tube provided with a pair of diametrically-opposed electrodes, the fluid to be metered passing through the tube to intercept a magnetic field thereon, thereby inducing a signal at the electrodes which is a functi... | 12/02/1980 |
| 4236410 | Temperature-compensated electromagnetic flowmeter An electromagnetic flowmeter in which the fluid to be metered is conducted through a flow tube provided with a pair of diametrically-opposed electrodes. The fluid intercepts a magnetic field established in the flow tube by a magnetizable core having a coi... | 12/02/1980 |
| 4214477 | Flangeless electromagnetic flowmeter A flangeless electromagnetic flowmeter insertable between upstream and downstream pipes which have the same internal diameter, the adjacent ends of said pipes having like flanges. The cylindrical body of the flowmeter is interposed between the flanged end... | 07/29/1980 |
| 4205688 | Method and apparatus for developing and measuring pulsed blood flow A blood flowmeter responsive only to the pulsatile component of blood flow is combined with apparatus for converting normal blood flow in a limb to fully pulsated flow to provide accurate zero baseline and total flow information. Preferably, the arterial ... | 06/03/1980 |
| 4204240 | High-voltage impulse driver for electromagnetic flowmeter A drive system for an electromagnetic flowmeter wherein the fluid to be metered is conducted through a flow tube to intersect a transverse magnetic field created by an electromagnet having an excitation coil. The resultant voltage induced in the fluid is ... | 05/20/1980 |
| 4186600 | Magnet system for electromagnetic flowmeter An electromagnetic flowmeter in which a fluid to be metered is conducted through a flow tube formed of a non-magnetizable, weldable metal pipe having an insulating liner therein and provided with a pair of diametrically-opposed electrodes. The fluid passi... | 02/05/1980 |
| 4181013 | Electrodes for an electromagnetic flow meter Electrodes for an electromagnetic flow meter are mounted through a pipe wall using pairs of concentric electrodes electrically insulated from each other and from the mounting pipeline while electrically contacting a fluid in the pipeline being measured fo... | 01/01/1980 |
| 4181019 | Electromagnetic flowmeter with noise compensation An electromagnetic flowmeter in which a low-frequency rectangular wave is supplied to the electromagnet coil of the flowmeter to produce an excitation current establishing a magnetic field which is intercepted by the fluid passing through the flow tube to... | 01/01/1980 |
| 4181018 | Unitary electromagnetic flowmeter A highly compact electromagnetic flowmeter unit interposable between the flanged ends of upstream and downstream line pipes for metering fluid passing through the line. The flowmeter is constituted by a ferromagnetic ring within which a pair of electromag... | 01/01/1980 |
| 4175566 | Catheter fluid-velocity flow probe A catheter fluid-velocity flow probe is disclosed which has greater sensitivity and which dissipates less heat during operation than flow probes heretofore constructed. These significant results are achieved by providing two electromagnets in the probe to... | 11/27/1979 |
| 4147058 | Electromagnetic fluid flowmeter operable with free fluid surface An electromagnetic fluid flowmeter wherein two arc-shaped, circular segment electrode plates B1, B2 are disposed horizontally opposite each other on the internal periphery of a tubular conduit M, and are separated by vertically oppos... | 04/03/1979 |
| 4144751 | Square wave signal generator A square-wave signal generator circuit for generating a rectangular waveform signal particularly for application to the field coil of an electromagnetic flow meter. A coil excitation current from a direct current source is switched to provide a current fl... | 03/20/1979 |
| 4125019 | Probe type electromagnetic flow meter with debris shedding capability A probe type magnetic flow meter is arranged for accurate measurement in environments which exhibit debris especially debris which is of a character which may tend to cling to the probe. The probe, which has a longitudinal axis, is mounted to be immersed ... | 11/14/1978 |
| 4122714 | Magnetic current meter for open channel flow measurement A magnetic current meter adapted to sense the flow of liquid through an open channel to produce a mean flow velocity signal that is independent of fluctuations in the level of liquid in the channel. The meter includes a tube of insulation material so posi... | 10/31/1978 |
| 4121454 | Clamp on electromagnetic flow transducer An electromagnetic flow transducer capable of mounting onto any selected point of a continuous cable without requiring the cable to be cut. The flow transducer has a housing, which surrounds the cable, having an appropriate hydrodynamic shape to minimize ... | 10/24/1978 |
| 4117720 | Electric measuring device having a small-bore liquid container with improved electrode sealing means An electromagnetic flowmeter having a small-bore flow tube having a thick-walled plastic tube having a conically-relieved electrode-receiving bore. A compression ring around the conical part of the tube squeezes the plastic sealingly between the electrode... | 10/03/1978 |
| 4098118 | Unitary electromagnetic flowmeter A highly compact electromagnetic flowmeter unit interposable between the flanged ends of upstream and downstream line pipes for metering fluid passing through the line. The flowmeter is constituted by a ferromagnetic ring within which a pair of electromag... | 07/04/1978 |
| 4065965 | Electromagnetic flowmeter having removable electrode leads An electromagnetic flowmeter having a flow tube wherein the electrodes leads pass through potting material forming part of the lining of the flow tube. The leads emerge at the exterior of the flow tube at three points, two of which substantially are at th... | 01/03/1978 |
| 4050303 | Fluid flow meters An electromagnetic flowmeter comprises an iron tube surrounding a non-magnetic electrically insulating tube through which the fluid flows. Windings formed by printed circuit conductors are located on the inner surface of the iron tube and produce a main m... | 09/27/1977 |
| 4019385 | Noise compensation in electromagnetic flowmeter A noise-compensating circuit for an electromagnetic flowmeter in which the fluid to be metered is conducted through a flow tube having a pair of diametrically-opposed electrodes mounted thereon, the fluid intercepting an electro-magnetic field whereby a v... | 04/26/1977 |
| 4009603 | Zero speed calibration method and apparatus for use with an electro-magnetic underwater log for marine vessels Two embodiments of a zero speed calibrator for a known type of electro-magnetic underwater log are disclosed. In a presently preferred embodiment, switching means are provided to connect the excitation source of the log to the magnetic field-generating co... | 03/01/1977 |
| 3981190 | Electromagnetic flowmeter having internal field coils An electromagnetic flowmeter having its field coils inside a flow tube through which conductive fluid passes. The tube has a lining of material which is appropriate to the nature of the fluid. The coils are contained within boxes which are fixed to the in... | 09/21/1976 |
| 3977246 | Magnetic flowmeter having in phase noise compensation An electromagnetic flowmeter in which the fluid to be metered is conducted through a flow tube in which it intercepts a magnetic field, the voltage induced in the fluid being transferred to electrodes disposed at diametrically opposed points on the tube. ... | 08/31/1976 |
| 3945250 | Flow transducers This invention relates to a flow velocity transducer particularly adapted to the determination of blood flow in blood vessels.... | 03/23/1976 |
