Abstract: An apparatus and method for providing continuous phase proportion indications for a single component fluid having multiple coexisting phases. The apparatus assures homogeneity of the multiple phases by subjecting the fluid to an ultrasonic or sonic wave generator which uniformly disperses the phases among each other. The homogeneous phase mixture is exposed to a second sonic or ultrasonic wave generator with the speed of the wave originating therefrom being timed during its traversal across the mixture. Such timing enables determination of the acoustic velocity which, in addition to the wave's frequency and mixture's pressure, temperature and drop size can be correlated with the proportions of the phases in the mixture.

Abstract: A fractionating apparatus under microprocessor control including a tumbler having a series of screens of progressively larger openings around its periphery. A sample of particulate material is passed successively through each of the screens by incremental rotation of the tumbler. To aid in classifying the fractions, a spray of fluid is projected against the screens and a rocking motion is imparted to the tumbler. The smallest fraction, not being retained, is entrained in a moving stream of fluid and passed directly to a porous weighing member. When this entire fraction is deposited and weighed, the next larger fraction is accumulated in the weighing member. These individual weights and their sum are recorded and from them size percentages are computed.

Abstract: A method and apparatus for determining the fractional distribution of fibers by specific surface in a sample of mechanically treated pulp comprising: a hydrocyclone, at least two collecting chambers, a pump to feed pulp to said hydrocyclone, means to selectively connect the pump inlet with each chamber and means to selectively connect one of the outlets of the hydrocyclone to a selected chamber.

Abstract: An engine output shaft is bolted to the hub of a drive plate or flex plate, the outer periphery of which is fastened to the torque converter of an automatic transmission such that the engine torque is transmitted by the drive plate from the engine to the transmission. An arcuate array of slots extending between the hub and the periphery of the drive plate define a plurality of spokes which carry the torque. The spokes bend or flex by an amount which is proportional to the torque. A pair of electromagnetic pickups are secured to the engine adjacent the inner and outer ends of the spokes respectively in order to obtain a measure of the spoke deflection and, therefore, of torque. A torque signal is electronically derived from the output of the pickups.

Abstract: A torque transducer for measuring the torque in the outgoing crankshaft of automobile engines comprises two two-pole magnetic cores, arranged perpendicular to each other, with coils around the poles. The coils of one core are adapted to be supplied with alternating current for generation of an alternating field in the surface of the shaft. The second core with its coils is adapted to sense the changes in the alternating field which are caused by the torque of the engine. The poles of the primary core are located opposite to diametrically opposed points on the crankshaft.

Abstract: A system of vibration-absorbing, height-adjustable, force-sensing components, adapted to be incorporated in support members of a unit of industrial equipment to enable precise alignment and balancing of such equipment, to minimize noise generated thereby and to achieve greater precision and efficiency by fine tuning the performance thereof. The system has cooperating load indicating means which provide for read-out of forces exerted on the respective support members. Additionally, the system may include means for indicating power consumption during operation. When the equipment is at rest, static load forces are indicated. Applicant's system permits preliminary adjustment for balancing load distribution when the equipment is at rest. Then, during operation, further adjustments may be made, based upon monitoring of read-outs of dynamic and enertia forces and power consumption, in order to obtain optimum stability, alignment, damping of vibration and shock, and noise control.

Abstract: A tensiometer, for measuring the tension of elongated flexible articles, has a frame member, one portion of which defines a scale and a second portion of which supports a fulcrum spaced from the scale, and a spring member for applying a predetermined force to the fulcrum. The elongated flexible article bends about the fulcrum portion of the frame and, in so doing, defines a movable output member which cooperates with the scale to provide a reading.

Abstract: A wave measuring buoy for measuring ocean surface wave amplitude and frequency is disclosed. The buoy includes a single-axis accelerometer suspended as a pendulum inside a water-proof housing. The waterproof housing is connected to and beneath the flotation hull of the buoy and is located at the center of rotation of the buoy assembly so that the accelerometer is substantially insensitive to roll and pitch motions of the buoy. The output of the accelerometer is an analog signal proportional to the vertical (heave) acceleration of the buoy. A frequency transfer calibration can be applied to the accelerometer output to compensate for the mass, size and resonant heave behavior of the buoy.

Abstract: Electromechanical impact meter enables obtaining real-time on-site collection rate information concerning undersea mining of manganese nodules or other solid minerals at a remote location.

Abstract: Apparatus are disclosed for sensing the velocity of a fluid stream, as may be flowing in a duct, pipe, or the like, which fluid stream exhibits variations in its temperature under different operating conditions. The apparatus includes a first probe which is exposed to the fluid stream and includes first temperature sensing means for sensing the temperature of the fluid stream. A second probe is provided which is disposed within the fluid stream and includes at least a portion constructed of a thermally conductive material. Heater means are disposed in thermally conductive relationship with said thermally conductive portion, and second temperature indicative of the temperature of said heater means. Third temperature sensing means are provided for sensing the temperature of the thermally conductive portion of the second probe at a point removed from the heater means, which temperature is a function of the heater means temperature, the fluid temperature, and the velocity of the fluid flowing thereover.

Abstract: A system for measuring the height of material in a storage container by generating an incident pulse with a pulse generator and transmitting the pulse through a high impedance transmission line supported in a container. A reflected pulse of opposite polarity is generated at the interface of air and material in the container and is received by a reflected pulse detector which again triggers the pulse generator to continuously monitor the height of the material in the container. The time difference between the transmitted incident pulse and the received reflected pulse of opposite polarity is the indication of the height of the material in the container. A hold off delay disables the reflected pulse detector for a finite period of time so that the reflected pulse detector is not affected by noise signals on the transmission line. If no material is in the container and no reflected pulse of opposite polarity is received, then one automatic start pulse generator retriggers the pulse generator.

Abstract: A device for measuring the depth of a body of water and for marking the position of measurement to facilitate structural fishing. The device comprises a base for supporting an annular scale for rotation relative to said base. Float means is provided for supporting the device in the water with a portion of the scale above the surface of the water and with its axis of rotation horizontal. Also provided is a rotatable spool having a line wound around the spool. A weight is connected to the free end of the line for unreeling the line as the weight sinks in the water. Means is coupled between the spool and the annular scale and is responsive to rotation of the spool for rotating the annular scale an amount which is a function of the length of line unreeled from the spool as the weight sinks in the water.

Abstract: A gas stream monitoring system monitors a gas stream of a power generator and causes a sample of the gas stream to be collected if its characteristics indicate that a material in the power generator is being thermally degraded. After verifying that the degradation indication is true, a sample is taken of the gas stream. In order to insure that the sample is representative, an expansion chamber approximately the same size as the ionization chamber of the monitoring device is placed in line prior to the sampling device. The sampling device has three sections which collect large particles, small particulates, and vapors and gases. The products collected can be analyzed to determine which material in the power generator was thermally degraded.

Abstract: A thermograph adapted to be pre-loaded with chart paper upon which shipping information can be written, and comprising an instrument unit enclosed in an expendable container for automatic operation and security assured by a seal, the instrument being operated horologically in combination with a thermometer and all of which is electro-mechanical wherein solid state circuitry powers prime movers to advance the chart on a time basis while servo positioning a recording stylus by means of interval pulses, and responsive to a temperature sensing transducer means cooperating with the solid state circuitry comprised of a comparator means, and discriminator means operable to actuate switch means to "power-up" or "power-down" prime movers that position said stylus according to temperature sensed by said transducer means.

Abstract: A tubular element having structural members disposed thereon at selected axial locations for supporting thermocouples inside the bore of a hollow shaft. Each of the structural members constitutes a generally "X"-shaped configuration which is substantially divided in half to form separated sections. Thermocouples placed in the legs of each X-shaped structural member are biased into contact with the shaft's interior surface by spring members which are disposed in openings formed in both sections on opposite sides of the X member's division at low or zero speed and by the springs and centrifugal force at high speed. Relative axial movement of the sections constituting each X member is restrained by dowels set into the sections and across the space separating them. Wires from the thermocouples extend radially into and axially within the tubular member. At one axial end of the tubular member the thermocouple wires are connected to a rotatable transmitter which broadcasts signals received from those thermocouples.

Abstract: A thermocouple temperature detecting assembly having a temperature detector provided with a thermocouple as a temperature detecting element is disclosed. In a lead wire which is connected to the temperature detector there is provided in the vicinity of the temperature detector a circuit such as a switching circuit for processing an electric signal in accordance with the ambient temperature. The temperature detector and the signal processing circuit are unseparably connected to each other and a compensating lead wire for compensating for the ambient temperature is used only for a short distance between the temperature detector and the signal processing circuit.

Abstract: An encoder is disclosed for providing an accurate digital representation of the altitude of an aircraft vehicle by comparing an output signal from a pressure transducer which is a function of the barometric pressure at the altitude of the vehicle with an internally generated waveform which represents a curve of altitude vs. barometric pressure on its X--Y axis. The waveform is generated by a closed loop having an integrator circuit for providing the waveform, a comparator, a filter, a voltage controlled oscillator, and a counter, which all maintain the amplitude of the waveform within precise limits. The output signal from the transducer and the wave form from the closed loop are compared by a second comparator to provide a signal which transfers temporary information in the counter to a storage device which provides a coded digital output of the altitude of the vehicle.

Abstract: A gas cap includes an integral container portion downwardly extending therefrom and adapted to measure the proper amount of oil to be added to the fuel tank of a gasoline two-cycle IC engine. The cap portion of the device is adapted to be hand-held both in closing the tank and in manipulating the tubular container portions thereof for measurement of the oil.

Abstract: A rotation displaying device for displaying the rotating speed of an engine, especially, that of an agricultural machine such as a combine harvester, in colors classified by the low speed, standard speed and high speed. The device comprises a rotary shaft rotating at a speed proportional to the rotating speed of the engine, and a color pattern plate urged in one direction by the centrifugal force produced by the rotation of the rotary shaft. The color pattern plate is provided on its surface with a pattern of three different colors, and the color pattern changing with the successive displacement of the color pattern plate is viewed through a single central displaying opening of a display plate to display the low speed, standard speed and high speed of the engine.

Abstract: A three-dimensional region of an object is scanned with at least one pulsed ultrasonic beam. Echo signals are generated, which represent echoes that have originated within said region in response to said beam. By a switching operation in accordance with at least one logical function, those of said echo signals are selected which represent echoes that have originated at at least one locus that is defined by said at least one logical function. Each of the thus selected echo signals is displayed at a location which is coordinated with the location at which the echo represented by said signal has originated.

Abstract: A method and apparatus for protecting the transducer in a liquid-filled differential pressure transmitter having stroke limited, isolation diaphragms from exposure to overrange pressure are disclosed. Bidirectional overrange pressure protection is provided through the use of a single, preloaded bellows that is restrained by a preloaded stop means preferably including a preloaded mechanical spring. The bellows remains stationary when the differential pressure transmitter is exposed to a normal, operational differential pressure. When an overrange pressure is applied to the transmitter, the bellows expands or contracts to accommodate the liquid displaced by either of the isolation diaphragms thereby protecting the transducer from the overrange pressure. Upon removal of the overrange pressure condition, the protection apparatus automatically resets itself.

Abstract: A differential pressure transducer assembly which indicates pressure differences while remaining insensitive to variations in line pressure and overload pressure. The assembly has a transducer consisting of a semi-conductor sensor isolated from the medium being measured by mounting it on a resilient diaphragm between two small hydraulic chambers. The chambers are closed with a pair of diaphragms which isolate the two chambers from the external environment. The transducer sensor is comprised of a silicon chip having a large center boss area which is supported by a silicon back plate of similar material fused to the silicon chip at the periphery. The back plate is mounted by a hollow support stud to a threaded hub at the center of the resilient diaphragm separating the chambers. A space between the silicon chip and back plate communicates with the hydraulic fluid of one chamber through an inlet in the support stud. The opposite side of the silicon chip is immersed in the hydraulic fluid of the other chamber.

Abstract: A stepless speed change gear for bicycles and the like. A device is disclosed wherein a rotary input is converted to reciprocating motion by a rack and pinion, the rack is mounted at the end of a lever which is oscillated; an arm is mounted on the lever, connecting it to a rod which is driven in alternating rotary directions; the rod is connected to the output shaft by two ratchets driven in alternate directions by said rod, said ratches are geared to said output shaft in such a way that the output is a continuous rotary motion. The speed change mechanism being that said arm is slidably mounted on said lever and rod so that the nearer the arm is drawn to the end of the lever on which said rack is mounted the greater is the oscillating motion imparted and the greater is the subsequent angle through which the rod is rotated.

Abstract: An inertial locking device for blocking the rotation of a shaft. The device comprises a pivoting ratchet which is brought into contact with a gear means to prevent further rotation of the shaft by virtue of the displacement of an inertial mass within the device. The device may be used in conjunction with a seat belt retractor so as to prevent further extraction of the belt in the event the retractor is subjected to a destabilizing force.

Abstract: The invention is directed to a gear transmission for an angle tool such as a grinder, polisher, sander, angle screwdriver or the like having a drive motor for driving an output spindle shaft. The motor has a drive shaft defining a longitudinal axis transverse to the output spindle shaft. The gear transmission connects the drive shaft of the motor to the output spindle shaft and includes a first stop and a second stop on one of the shafts. A first gear is mounted on the one shaft so as to abut against the first stop and a second gear mounted on the other one of the shafts. A resilient annular bearing is tightly held between the second stop and the first gear; and, a cut-shaped retainer is disposed on the one shaft for containing the resilient annular bearing.

Abstract: Mechanism which compensates for backlash error in a lead screw position indicator by decoupling the indicator shaft from the lead screw when reversing rotation. The position indicator then displays correct information regardless of the direction of rotation of the lead screw.

Abstract: A device or arrangement of parts for electrically loading a movable member so as to bias same in one direction. In this device, an elastic member is secured to a pivot provided on a base member, with its two arms being deflected and then held by first and second locking members, after which a movable member is forced down against the elastic member from above, so that a guide portion of the movable member may push one arm of the elastic member so as to keep the arm apart from the locking member which locks the arm, and then a locking portion continuous with the guide portion, of the movable member locks the arm. As a result, the movable member is elastically loaded so as to bias in one direction, while the movement of the movable member is limited by means of a control member provided on the base member.

Abstract: High-speed tool steel cutting blades are inserted in slots in an inexpensive core and retained therein by a high-strength structural anaerobic adhesive. These adhesives are liquids before curing.

Abstract: A corkscrew includes a support consisting of a supporting ring adapted to engage a neck of a bottle, and a support bracket connected to the supporting ring. An elongated spindle having a cork-engaging helix at its leading end and a threaded portion at its trailing end is mounted on the support for turning relative thereto and also for longitudinal displacement. A nut engages the threaded portion of the spindle and has handgrip portions, and a locking element embraces the nut and is pivotable relative thereto between a locking position in which it connects the nut to the spindle for joint turning and longitudinal displacement, and an unlocking position in which it releases the spindle for longitudinal displacement during the further turning of the nut.

Abstract: A tool for opening and closing wrist-watches, and more particularly tight-fitting wrist watches, is disclosed which is in the form of adjustable pliers, the jaws of which mainly have an inner flat surface covered with protective pads, the tip of one of said jaws consisting of a transversal protrusion preceded by a recess, the tip of the other of said jaws consisting of a slanting flat surface.

Abstract: An infeed device for a turning machine for finishing the peripheral surfaces of elongated workpieces of circular cross-section includes at least one pair of inlet rolls in which the plane of symmetry of each roll normal to the axis thereof includes a small angle with the direction of movement of the workpieces through the machine, with the planes of symmetry of the two rolls of the pair inclined in opposite directions with respect to the direction of movement of the workpiece.

Abstract: A clamping device, especially for clamping tools in a turret or the like, in which each tool is provided with radially outwardly movable clamp elements and an actuating element carried by the tool movable axially for actuating the clamp elements. The turret in which the tool is mounted includes mechanism for driving the actuating element in actuating direction and for releasing the actuating element from actuating position to release the respective tool from the supporting turret.

Abstract: An elongated horizontal support member is provided including upper and lower marginal edges. One pair of ends of a pair of parallel horizontal arms overlie and are secured to the upper marginal edge of the support member with the other free ends of the arms projecting outwardly of one side of the support member. The arms define opposing channels and a square panel is provided and includes pairs of opposite side edges selectively guidingly receivable within the channels. One marginal edge of the panel has a closed-ended vertical slot formed therein extending therealong and the panel includes structure for clamping the base plate of a circular saw thereon with the lower marginal edge of the saw blade projecting downwardly through the slot.

Abstract: The present specification describes and claims a device for severing a strip which interconnects items conveyed one behind the other and spaced apart from each other. The device is particularly suited to cutting the binding strip for the spine of books, blocks etc. The device comprises a knife mechanically coupled to a follower device which, in use, follows the profile of the individual items. The follower device maintains the knife in a position ready to cut and when the follower device drops down a gap between adjacent items, the movement of the knife activates control means to operate a knife power drive, the knife then cutting the strip and following a working cycle back to a ready position wherein the follower device can engage a subsequent item.

Abstract: A circular saw blade has block-like tooth tip inserts of hard metal, secured at circumferentially spaced intervals to the peripheral portion of a disc-like blade body having opposite flat side surfaces. The gullet in front of each insert, conventionally present in such a blade, is spanned in the circumferential direction, at least to a substantial extent, by a fixed thin wall, which can comprise a reduced thickness portion of the blade body, so that each gullet is thus defined by a sidewardly and radially outwardly opening cavity in a side surface of the blade, and the blade has a near-circular periphery. At the circumferentially rearward and radially inward portions of each cavity its edges are substantially bevelled to facilitate flow of cuttings out of the cavity.

Abstract: In an electronic musical instrument wherein waveshape F(x, y) is computed and the resultant waveshape is converted to a musical tone, computation of said waveshape F(x, y) is carried out in accordance with either one of the following equations: ##EQU1## WHEREIN: F(X), F(Y) REPRESENT MATHEMATICAL FUNCTIONS OF TIME, RESPECTIVELY; AND N REPRESENTS AN ARBITRARY INTEGER.

Abstract: An automatic rhythm generator of an electrical musical instrument including a rhythm pattern generator for rhythmically selecting for actuation different ones of a plurality of instrumentation circuits to be sounded and a strobe pulse generating circuit for establishing the appropriate pulse width of a drive pulse needed by each instrumentation circuit for proper actuation thereof. The rhythm pattern generator circuit selectively enables a plurality of drive gates respectively associated with the plurality of instrumentation circuits during selected ones of a succession of periodic rhythm cycles in accordance with a predetermined rhythm pattern. The strobe circuit is synchronized with the rhythm pattern generator and generates during each rhythm cycle a plurality of strobe pulses on a corresponding plurality of outputs respectively associated with the plurality of instrumentation circuits. Each of the strobe pulses has a width preselected for the instrumentation circuit with which it is associated.

Abstract: A fully digitalized function-of-time generator suitable for use as a tone envelope generator in a digital electronic musical instrument, comprising: a clock pulse generator for generating a clock pulse at a selectable rate; a gate enabled at each arrival of the clock pulse; a single-stage binary shift register for successively shifting out its contents as a digital word representing the instantaneous values of a desired function of time synchronously with the clock pulse; a digital subtractor; a digital multiplier; and a digital adder, all of these members being interconnected to each other to be operative so that the output of the register is subtracted from a first set value representing a digital word, the resulting difference being multiplied by a second set value representing a digital word, the resulting product being added to the output of the register via the gate, so that the resulting sum is loaded into the register.

Abstract: An envelope generator for an electronic organ, especially for developing percussion sounds, in which each of at least some of the organ cases having keyers pertaining thereto are provided with envelope control circuits interposed between the keys and the respective keyers. Each envelope control circuit includes voltage supply means connected to the keyer and a control circuit therefor which is actuated by depression of the key. The control circuit provides for continuous actuation of the keyer by voltage from the voltage supply means while the key is depressed or for a momentary supply of keyer actuating voltage from the voltage supply means to the keyer followed immediately by a decay of the keyer actuating voltage at a predetermined rate and which rate can be selectively varied.

Abstract: A bridge for an electric string bass or other stringed musical instrument includes a base adapted for attachment to the body of the instrument and a number of saddles for individually supporting the strings, the saddles being adjustably movable to different positions relative to the base, in the direction along the length of the strings, to adjust the string intonation. The saddles may include piezoelectric elements for providing electrical signals and, in this case, the base may further include a covered recess for housing a plurality of volume controls each associated with a respective one of the strings. The saddles are designed and arranged on the base to support the strings with a given curvature matching that of the fret board and an adjustment means is provided for raising, lowering and/or tilting the base relative to the body to bring the strings into proper height adjustment relative to the frets.

Abstract: Two sets of digital tone generators are provided for a musical instrument. The members of the first set of generators create data which represent discrete amplitudes of a musical waveshape corresponding in the time domain to be true musical frequencies played by the musician. The members of the second set of generators create data which represent discrete amplitudes of a different waveshape corresponding in the time domain to frequencies which in general are note selected as true musical frequencies. Provision is made for multiplying the data created by selecting pairs of digital tone generators, one from each of the two sets. The resulting modulated data is converted into analog signals in a form suitable for a conventional sound system.

Abstract: There is disclosed a circuit for controlling the expression of an electronically controlled keyboard instrument and is an improvement on the circuit disclosed in application Ser. No. 680,996. The circuit works on the principle that by switching a solenoid on and off at a rapid rate and then varying the time on versus the time off, the energy supplied to the solenoid varies and therefore the striking force of the piano is changed. In accordance with the present invention, precise control over the width of the pulses is achieved by first setting a set voltage level and then adding thereto increments of set voltage according to a binary weighting. These voltages are then added and compared with a triangular voltage in a comparator. Both the up ramp portion and the down ramp portion of the triangular waveform are utilized and compared against the sum voltages. The pulse width of the comparator output is thus a function of the intersection of the ramp voltage, both up and down ramps, with the sum voltage.

Abstract: A piano bass string includes a load carrying wire and at least one wire encircling the load carrying wire with the encircling wire made up of a tubular casing of a drawable material and a core which is heavier than the drawable material.

Abstract: In a coupling construction of a wooden base with a striking head of a piano hammer, at least one gap is left between a longitudinal end of the striking head and the longitudinal end face of the wooden base which serves as a refuge for unexpected deformation of the elastic insert, thereby avoiding separation of the striking head from the wooden base and development of cracks in the wooden base when striking the string.

Abstract: A stringed musical pick or plectrum dispenser for receiving, retaining, and dispensing a pick, the dispenser being mounted in fixed relation to an instrument sound board adjacent the instrument strings. Each pick is wafer thin and generally triangular in shape. The dispenser may be mounted on a pick guard which has a first edge alignable with the instrument string that is last plucked to guard against, and prevent, continued downward travel of the pick thus protecting the finish on the instrument sound board. A dispenser housing has a perimetral wall with upper and lower edges. The housing defines in cross-section the general configuration of a pick. A bottom side is affixed to the lower wall edge and a top side is affixed to the upper wall edge. A pick receiving and dispensative opening is formed in the top side. The opening receives a pick and provides an inner surface for engaging and retaining the pick in the dispenser while exposing a pick surface through the opening.

Abstract: An anchor for insertion into a hole in a wall having an undercut groove extending therearound, the anchor having an elongated body with a bore therethrough, the bore being threaded at its outer end and tapering down in diameter toward the inner end of the body and slotted to permit expansion when a tapered pin is inserted therein. The body has an annular locking collar about its expandable portion placed to enter the groove when expanded. The groove and locking collar precisely interfit and are spaced from the inner end of the hole and the anchor body by a distance at least as great as the axial width of the collar. A screw member fits in the bore and has a pusher pin which pushes the expansion pin all the way into the bore when the member is screwed partway into the threaded bore portion, leaving part of the screw protruding from the body and the hole.

Abstract: An assembly for loading a projectile and a propellant charge into a barrel chamber of a firearm, wherein the projectile is movable from a first position at the side of a plane extending along an axis of the barrel to a second position coinciding with the barrel axis, and a rammer head assembly which pivots the propellant charge into line behind the projectile and drives the projectile and propellant charge into the firearm.

Abstract: A breechblock for an automatic firing weapon comprising a breechblock housing containing a breechblock head displaceable in the breechblock housing. There is also provided at least one movable blocking body by means of which the breechblock head can be locked in a firing position with the breechblock housing. A spring-loaded control element is arranged to be displaceable in the breechblock housing, this control element containing a control surface by means of which there can be positionally adjusted the blocking or locking body. In the breechblock head there is arranged a locking bolt which can be shifted into a recess of the control element. By means of the locking bolt the breechblock head, which is unlocked from the breechblock housing, can be coupled with the control element, and play is present between the control surface and the blocking body and by means of which, prior to reaching the firing position of the breechblock head, there is uncoupled the control element.

Abstract: A reaction mechanism of a hydraulic control valve including a control valve for regulating hydraulic pressure by controlling hydraulic fluid disgorged from a pump, an input member mechanically connected to the control valve and operated by a driver, the input member having a smaller diameter portion and a larger diameter portion, an annular reaction regulating member into which the smaller diameter portion of the input member is slidably inserted, a diameter of the annular member being equal to or less than the larger diameter portion of the input member, a biasing member for normally urging the annular member toward the larger portion of the input member, and a member for supplying the hydraulic pressure regulated by the control valve into an area between the annular member and the large diameter portion of the input member to displace the annular member from the larger diameter portion of the input member against the biasing member.

Abstract: A power steering pump flow and pressure control valve comprising a valve spool located on the high pressure side of the pump and on the upstream side of the vehicle steering gear. The valve includes a spool slidably situated in a valve chamber and a metering pin that is moved relative to the spool to either a first operating position or a second operating position. The metering pin registers with a flow control orifice located at one end of the valve chamber to provide a high flow or a low flow depending upon its operating position.