| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
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| 181 | Electro-hydraulic transducer | US13952371 | 1971-05-03 | US3805843A | 1974-04-23 | CYPHELLY I |
| A liquid flowing through a restricted throttling passage is heated by the energy of an electric signal that it is desired to convert to a hydraulic signal, and the resulting increase in the temperature and the fluidity of the liquid causes increased flow through the passage, the increase constituting the hydraulic signal. Use of the hydraulic signal for controlling a slide valve is illustrated.
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| 182 | Servo-valve responsive to small control pressure | US23449972 | 1972-03-14 | US3802453A | 1974-04-09 | FLEURY J |
| Servo-valve comprises a spool valve controlling the main pressure one end of which is subjected to a control pressure and the other end of which is subjected to a feedback pressure derived from the output pressure but diminished by a resilient counter-pressure.
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| 183 | Low range high overload differential pressure transducer | US3765256D | 1971-12-30 | US3765256A | 1973-10-16 | SCHABERG R; PERINO P; HELIN R |
| A bell crank flexure useful in connection with a differential transducer whereby a differential force is translated through the bell crank flexure to a guided beam to permit the positioning of strain gauges to be oppositely stressed on the imposition of a differential force and transducers employing the same, for example, differential pressure gauges employing such flexures.
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| 184 | Ends down monitoring | US3763702D | 1970-07-09 | US3763702A | 1973-10-09 | JOY R |
| A pneumatic device, particularly for detecting an ends down condition on a spinning frame, having a piston member with a passageway connecting its rear to an enclosed region at its front and movable in a bore of a housing rearward against a spring when a low pressure signal is applied to the device and communicated to the enclosed region via the passageway. In one embodiment, the piston member grips a movable electrode in its rear position and, as it returns forward after the signal is removed, drags the electrode forward against a spring to connect it to a stationary electrode and produce an electrical pulse and further generates pneumatic pulses by its forward and rear movements. In another embodiment, a valve stem blocks a passageway venting a chamber to the atmosphere when the end is up so that pressure is communicated to the region at the front of the piston member which moves rearward away from a transparent bezel and when the end is down the chamber is vented and the piston member moves forward until the colored front of the piston member is visible through the bezel. In yet another embodiment, the yarn itself blocks the passageway. In another embodiment, the ends down detector includes a pivotable member which engages the yarn at one end and has a magnet mounted on its other end so that when the yarn comes down the magnet moves adjacent a reed switch which is closed thereby. In one system a number of such reed switches are each connected to a unique combination of data lines and a recorder for each switch is likewise connected to the lines. The recorder has a normally closed relay connected to those lines to which the associated switch is not connected and a normally open relay connected to those lines to which the associated switch is connected so that a current path is completed through a recorder relay via all of the relay switches only when the associated reed switch is closed. In another system, a number of pneumatic devices are connected to a common manifold so that a pneumatic signal travels both directions in the manifold toward devices for detecting the arrival of the signal. The time interval between the arrival of the signal at the first device and the arrival at the second indicates the position of the pneumatic device producing the signal and accordingly the particular device producing the signal. In one embodiment, the arrival of the signal at the first device causes a wheel to begin rotating and sequentially connecting to a number of fixed contacts. The arrival of the signal at the second device causes an electrical signal to be coupled to the fixed contact to which the wheel is connected at that time. In a second embodiment, the arrival of the signal at the first device causes a pneumatic logic to sequentially move through a number of stages so that the stage activated at the time of arrival at the second device indicates the pneumatic device which produced the signal.
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| 185 | Pneumatic pressure postion adjusting controller | US3721422D | 1971-03-25 | US3721422A | 1973-03-20 | BADER H |
| A pneumatic pressure position adjusting controller which includes a differential pressure amplifier providing first and second output pressures from a comparison unit responsive to pressures provided by the first and second pressure chambers, the second output pressure from the differential pressure amplifier being compared to an input pressure by a pressure distributor which applies a control pressure to the second pressure chamber, the first output pressure of the differential pressure amplifier being applied to the first pressure chamber.
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| 186 | Fluid pressure ration sensing device | US3707159D | 1971-03-24 | US3707159A | 1972-12-26 | EASTMAN JAMES M |
| A pressure ratio sensing device for generating an output fluid pressure differential signal in proportion to the ratio of two sensed fluid pressures. The output differential signal is derived from a pressurized supply fluid which flows subsonically through a first restriction, a second restriction defining a power jet for a dual output proportional acting fluidic amplifier having opposed control fluid ports, a vortex amplifier having a radial supply port and a tangential control port, and a third restriction to the lower of the two sensed fluid pressures. The fluid pressure intermediate the first and second restrictions is controlled to maintain the same in excess of the higher of the two sensed fluid pressures. The higher of the two sensed pressures is applied to one of the opposed control fluid ports of the proportional amplifier to bias the power jet thereof toward one of the dual outputs which, in turn, is vented to the tangential port of the vortex amplifier. The remaining of the dual outputs is vented to the radial supply port of the vortex amplifier as well as to the second of the control ports of the proportional amplifier. The pressure drop across the third restriction provides the output pressure differential signal which varies in proportion to the ratio of the sensed two fluid pressures. The effective flow area of the third restriction is such that the pressure differential thereacross does not exceed the expected minimum pressure of the lower of the two sensed fluid pressures.
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| 187 | Pressure ratio sensing | US3675225D | 1969-11-12 | US3675225A | 1972-07-04 | GLAZE STANLEY GEORGE |
| A pressure ratio sensor for producing a signal proportional to the ratio of two pneumatic pressures derived from two probes and comprising a casing, a diaphragm dividing the casing into two chambers each having an inlet, a needle attached to the diaphragm and extending through one of the chambers and controlling, in accordance with the position of the diaphragm, the effective area of an outlet from that chamber, the signal pressure from one probe being applied directly to one of the inlets, the signal pressure of the other probe being multiplied by a known factor, the multiplied signal pressure being applied to the other inlet and the position of the needle producing a signal indicative of the ratio.
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| 188 | Indicator mechanisms | US3645226D | 1970-08-10 | US3645226A | 1972-02-29 | MAYS MICHAEL RICHARD; PAGINTON PHILIP NORMAN |
| 1. An indicator mechanism having a detent element movable from either one of two positions through an intermediate third position, the element being resiliently loaded so as to detent into any one of the positions with which it becomes aligned, two resilient means each exerting a force opposing that exerted by the other resilient means, the force exerted by one of the means urging the element towards one of said two positions and the force exerted by the other of the means urging the element towards the other of said two positions, two force-increasing means one associated with each of the resilient means whereby the force exerted by the associated resilient means can be caused to increase to a value sufficient to overcome the combination of the force exerted by the other of the resilient means and the resilient loading of the element when it is detented in that one of said two positions from which the associated resilient means is urging the element towards the other of the two positions, the intermediate third position being so located that before the element reaches said other of the two positions it becomes aligned with and detents into the third position from which third position it can be released to continue its movement to said other of the two positions only by the application to the element of an opposing force sufficient to overcome the resilient loading on the element.
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| 189 | Electricity-fluid pressure converter | US3621864D | 1969-07-07 | US3621864A | 1971-11-23 | TONEGAWA HIROSHI; KAWASAKI TADAYUKI; NAKAYAMA KENJI |
| Electricity fluid pressure converter comprising nozzles disposed in opposite at a distance coaxially, one of which is a delivery nozzle and the other a receiving nozzle having a pressure receiving port of a delivered fluid with its opposite side being an output side, and a shield plate provided in the middle of said nozzles, said plate being displaced to a direction at right angles to the nozzle axes thus varying distribution of the jet speed to change the pressure generated in the pressure receiving nozzle.
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| 190 | Liquid-to-gas indicator and actuator device | US3587398D | 1969-10-31 | US3587398A | 1971-06-28 | DAWES LESLIE J |
| S LIQUID-TO-GAS INDICATOR IS DISCLOSED WHICH, IN ONE POSITION, WILL NORMALLY FLOW LIQUID AND WILL SENSE AND RESPOND TO THE BEGINNING OF GAS FLOW BY MOVING A MECHANICAL ACTUATING MEMBER WHICH MAY OPERATE A MICROSWITCH OR OTHER OUTPUT DEVICE. WHEN INVERTED, THE DEVICE WILL NORMALLY FLOW GAS BUT WILL RESPOND TO THE BEGINNING OF LIQUID FLOW BY MOVING THE ACTUATING MEMBER AS DESCRIBED. A SPRING-LOADED CHECK VALVE IS INSTALLED IN A MAIN CONDUIT WITH A FLOAT-TYPE BALL VALVE IN A PARALLEL CONDUIT CONNECTED ACROSS THE CHECK VALVE. A PISTON IS POSITIONED IN THE WALL BETWEEN THE CONDUIT SUCH THAT IT
RESPONDS TO CHANGES IN THE PRESSURE DIFFERENTIAL ACROSS THE CHECK VALVE AND THE ACTUATING MEMBER IS MOVED IN RESPONSE TO MOVEMENT OF THE PISTON. AN OPTIONAL BIASING SPRING IS PROVIDED URGING THE PISTON IN ONE DIRECTION, AND AN ADJUSTMENT SCREW IS PROVIDED FOR VARYING THE FLOW RATE OF THE PARALLEL CONDUIT. |
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| 191 | Pneumatic controller | US3572360D | 1969-07-25 | US3572360A | 1971-03-23 | LLOYD SHELDON G; TROTTMANN JERRY B |
| A PNEUMATIC CONTROLLER COMPRISING A GIMBAL ASSEMBLY HAVING FIRST AND SECOND LEVERS EACH PIVOTAL ABOUT AN AXIS. A FLAPPER ROTATABLE ABOUT THE AXIS OF THE FIRST LEVER COOPERATES WITH A NOZZLE ROTATABLE ADJUSTABLY ABOUT A THIRD AXIS. THE THREE AXES ARE ARRANGED SUBSTANTIALLY AT RIGHT ANGLES TO ONE ANOTHER.
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| 192 | Fluid pressure control systems | US3527241D | 1967-11-29 | US3527241A | 1970-09-08 | BRISTOW HUBERT R; PARKES JOHN F A |
| 193 | Tilt-ring pneumatic control device | US3515162D | 1968-11-01 | US3515162A | 1970-06-02 | BOWDITCH HOEL L; WILLIAMS GEORGE F; BERTONE RICHARD A |
| 194 | Beam connector unit | US3463524D | 1967-08-23 | US3463524A | 1969-08-26 | SAXE RENSSELAER P VAN |
| 195 | High impedance fluid amplifier | US3455325D | 1966-04-29 | US3455325A | 1969-07-15 | LIGHTNER GENE E |
| 196 | Fluid flow sensing system | US35755864 | 1964-04-06 | US3378022A | 1968-04-16 | SORENSON PAUL H |
| 197 | Fluid diode | US42055764 | 1964-12-23 | US3375842A | 1968-04-02 | DRAKE READER TREVOR |
| 198 | Adjustable pneumatic temperature transmitter | US57176866 | 1966-08-11 | US3365131A | 1968-01-23 | ZOLUDOW RICHARD S |
| 199 | Pneumatic actuator for keyboard operated machine | US52261366 | 1966-01-24 | US3327827A | 1967-06-27 | LAMBIOTTE JOSEPH C |
| 200 | Process variable transmitter and improvements therein | US33955364 | 1964-01-22 | US3297045A | 1967-01-10 | BEACH RICHARD G; EKSTEN JR CARL E; JAQUITH HOWARD R; NORTON JR STANLEY C |
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