| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Transducers | US214727 | 1980-12-09 | US4349282A | 1982-09-14 | Raymond W. Norfolk |
| A transducer has a chamber containing a substance having a monitorable physical and/or chemical property, for example electrical conductivity, which property changes in correspondence with a change in an external influence, for example, temperature. In one embodiment, the chamber is of elongate form and changes in said monitorable property in any part of the substance along the length of the chamber are monitored by a detection means. In a further embodiment the substance is arranged to undergo an abrupt change in the said property thereof, for example, due to a phase change in the said substance, in response to a predetermined change in the external influence, and detection means is provided to detect such abrupt change. | ||||||
| 82 | Air flow sensor | US974214 | 1978-12-29 | US4220950A | 1980-09-02 | Scott A. Clark; William E. Ulmer |
| An air flow sensor has a hollow tubular housing partially filled with potting compound and having a printed circuit board mounted in the compound inside the tube. The board is mounted such that two power resistors and a first heat sensing switch mounted on the board are embedded in the potting compound, and a second heat sensing switch mounted on the board above the compound is in contact with the ambient atmosphere. The power resistors are connected in parallel to a power source driving a fan, and the first switch has an actuation temperature selected to activate the switch when the power resistors radiate a selected amount of heat. The second switch also has an actuation temperature due to lack of air flow chosen to activate the switch when the ambient atmosphere reaches the designated temperature. | ||||||
| 83 | Fluid measuring apparatus | US792478 | 1977-04-29 | USRE30105E | 1979-10-02 | Jerome A. Rodder |
| A thin elongated hot wire is bent in half in an elongated cavity enclosed on its sides. The ends of the wire are supported by a circuit board at one end of the cavity and the middle of the wire is supported under tension by a quartz rod at the other end of the cavity, so the two halves of the wire are in spaced, approximately parallel relationship from each other and in spaced relationship from the sides of the cavity. The cavity is formed in a housing that comprises a block having a first flat surface and a plate having a second flat surface removably attached in abutment with the first surface of the block. The cavity is a groove formed in the first surface that has an open side enclosed by the second surface. | ||||||
| 84 | Fluid measuring apparatus | US523995 | 1974-11-15 | US3971247A | 1976-07-27 | Jerome A. Rodder |
| A thin elongated hot wire is bent in half in an elongated cavity enclosed on its sides. The ends of the wire are supported by a circuit board at one end of the cavity and the middle of the wire is supported under tension by a quartz rod at the other end of the cavity, so the two halves of the wire are in spaced, approximately parallel relationship from each other and in spaced relationship from the sides of the cavity. The cavity is formed in a housing that comprises a block having a first flat surface and a plate having a second flat surface removably attached in abutment with the first surface of the block. The cavity is a groove formed in the first surface that has an open side enclosed by the second surface. | ||||||
| 85 | Wind sensor | US545282 | 1975-01-29 | US3956932A | 1976-05-18 | James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher; James B. Stephens; Eric G. Laue |
| Apparatus for sensing the temperature, velocity, and direction of the wind, including four temperature-dependent crystal oscillators spaced about an axis, a heater centered on the axis, and a screen through which the wind blows to pass over the crystals. In one method of operation, the frequency of the oscillators is taken when the heater is not energized, to obtain the temperature of the wind, and the frequencies of the oscillators are taken after the heater is energized to determine the direction and velocity of the wind. When the heater is energized, the wind causes the downwind crystals to achieve a higher temperature than the upwind crystals, and with the magnitude of the difference indicating the velocity of the wind. | ||||||
| 86 | Apparatus for determining the presence of a vessel by detecting its wake | US3706962D | 1971-03-05 | US3706962A | 1972-12-19 | STRAPP JOSEPH P; CORNFORD NERI E |
| Apparatus for determining the presence of a vessel, such as a submarine in the ocean, by detecting its wake, comprising a test thermocouple (TC) junction connected to a length of two thermocouple conductors, and a heat sink, into which the free ends of the conductors are immersed, to form a reference thermocouple junction. An electrical instrument, such as a pen chart recorder, is connected to the free ends of the two conductors, the pen of the instrument being adapted for setting to a reference level, generally zero, when the voltage across the two conductors is constant, indicating that the test TC junction is in an environment where the temperature of the water is static. A submersible tow is used capable of being towed by a vehicle, generally a surface vessel. The test TC junction is mounted on the submersible tow, and thus monitors the temperature of the water, whereby a marked deviation in the temperature of the water from its static value, which indicates the presence of the wake of the vessel, is detectable on the scale of the electrical instrument by a corresponding deviation in the reading of the instrument from the reference level reading.
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| 87 | Method of analyzing circulation of electrolyte in electrorefining cells | US3691832D | 1970-02-13 | US3691832A | 1972-09-19 | MARTIN RICHARD G; TUDDENHAM WILLIAM M; LEBRIZZ JOSEPH M |
| Electrolyte flow patterns in an electrolytic cell utilizing anodes and cathodes of plate formation, particularly an electrorefining cell such as is utilized for producing pure cathode copper from fire-refined, impure, blister copper anodes, are determined electrically by taking flow-indicating measurements and temperature-indicating measurements simultaneously and in proximity to each other at selected locations within the cell. Sets of measurements taken at predetermined locations between and surrounding selected anodecathode pairs are employed to produce corresponding rate-of-flow contour charts depicting relative rates of electrolyte flow at the respective predetermined locations within the respective selected areas. The apparatus employed includes a slender probe, that carries a heated flowrate-sensing thermistor and an unheated temperature-compensating thermistor in closely spaced relationship at its tip, and Wheatstone bridge circuitry with read-out instrumentation.
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| 88 | Tandem-type hot-wire velocity meter probe | US3677085D | 1970-04-08 | US3677085A | 1972-07-18 | HAYAKAWA HIDEO |
| An improved tandem-type hot-wire velocity meter probe for the measurement of flow velocity of liquids and/or gases, comprising two hot-wire members disposed in tandem at upstream and downstream ends of an insulating support member placed in the flow path (e.g., a pipe or a conduit) of the fluid under measurement. The upstream or leading end hot-wire member has its downstream or trailing side buried or otherwise concealed in the insulating support member, while the downstream-end hot-wire member has its upstream side similarly buried or otherwise concealed therein, so that the exposed surfaces of the two hotwire members indicate a difference between their rates of heat transfer to the fluid in proportion to the flow rate thereof. This difference can be obtained in terms of a difference in electrical resistance between the hot-wire members by means of a meter incorporated in a bridge circuit including the hot-wire members. There are also disclosed herein several examples of the improved flowmeter probe all conforming to the above basic configuration of the two hot-wire members and the support member.
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| 89 | Directional sensor | US3592055D | 1969-02-12 | US3592055A | 1971-07-13 | DORMAN FRANK D |
| A fluid flow sensing instrument having a hot-wire or hot-film sensor mounted on the end of a probe for measuring the velocity of the flowing fluid. The sensor is combined with transducers, as thermocouple junctions, for sensing nonuniform distribution of heat on the sensor and generating an EMF which indicates the velocity vector of the flowing fluid.
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| 90 | Compensated thermistor sensor | US3535927D | 1968-07-19 | US3535927A | 1970-10-27 | MAHON ROGER F; MCMURTRIE CHARLES L |
| 91 | D.c. circuit for operating asymmetric thermopile | US3514998D | 1968-07-22 | US3514998A | 1970-06-02 | BENSON JAMES M |
| 92 | Apparatus for measuring a physical quantity by the use of pulsed energy | US3498128D | 1966-06-28 | US3498128A | 1970-03-03 | CALVET PIERRE JEAN FELIX |
| 1,155,588. Measuring fluid-flow rate electrically. P.J.F. CALVET. June 28, 1966 [June 28, 1965; Feb. 17, 1966; June 22, 1966], No.29032/66. Heading G1N. In apparatus for measuring the rate of flow of a fluid by its coating effect on a heated resistor, the resistor is fed with a pulsed current and the rate of change in temperature of the resistor after each pulse is measured to determine the fluid-flow rate. As shown Fig. 1, a timer B causes an EMF source E, e. g. an oscillator to feed power to a resistance transducer or thermocouple CA until its temperature reaches a first predetermined value, when a first trigger circuit B1 is operated and oscillator E is disconnected from the transducer CA. When the falling temperature reaches a second predetermined value a second trigger circuit B2 operates and the time interval between the operation of B1 and B2 is measured at IM and is indicative of the rate of fluid-flow. The switch S may constitute a vibrating relay which connects transducer CA alternately to the EMF source E and a measuring amplifier Ap Figs. 3, 5 (not shown). In further embodiments the rate of change of temperature of the transducer is sensed by measuring the temperature difference over a fixed time interval in the heating cycle Fig. 7 (not shown), or by continuously differentiating an electrical signal representing its temperature Fig. 9 (not shown). The principle of the invention may be used to measure other parameters, e.g. the viscosity of a fluid, by applying pulses of momentum to a paddle and measuring the rate of charge of its displacement. | ||||||
| 93 | Fluidic to electric transducer | US3489929D | 1966-07-28 | US3489929A | 1970-01-13 | WANG YEN-CHU |
| 94 | Crosswind sensing system | US3447372D | 1967-03-30 | US3447372A | 1969-06-03 | GOLDBERG IRA I; FISHER GEORGE I |
| 95 | Boat speed indicator | US63690567 | 1967-05-08 | US3400582A | 1968-09-10 | WARNER ERIC S |
| 96 | Hot wire anemometers | US46617165 | 1965-06-23 | US3354717A | 1967-11-28 | MINNICK PASCO A |
| 97 | Jet stream indicator | US51719865 | 1965-11-15 | US3350943A | 1967-11-07 | SMITH STANLEY J |
| 98 | Thermocouple hot wire anemometer | US70837846 | 1946-11-07 | US2580782A | 1952-01-01 | HOFFMANN ANTON R; CRUMP WALTER J |
| 99 | Air-speed measuring device | US67714646 | 1946-06-17 | US2536037A | 1951-01-02 | CLOUSING LAWRENCE A; TINT LESTER M |
| 100 | Condition-responsive device | US5812236 | 1936-01-08 | US2225941A | 1940-12-24 | HALL WILLIAM D |
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