Abstract: A heart pumpconsisting of a housing having an inlet and an outlet and a diaphragm adapted to be reciprocated to cause flow of flood through the inlet and the outlet, a brushless dc motor mounted on the housing, the motor having a fixed ball screw nut and a ball screw mounted for axial movement with respect to the motor rotor while being fixed against rotation with respect to the rotor whereby rotation of the rotor causes the screw to move axially with respect to the motor thereby actuating the pump diaphragm.

Abstract: A pump system of the reciprocating piston type is described, which facilitates direct motor drive and cylinder sealing. A threaded middle potion of the piston is engaged by a nut connected to rotate with the rotor of an electric motor, in a manner that minimizes loading on the rotor by the use of a coupling that transmits torque to the nut but permits it to shift axially and radially with respect to the rotor. The nut has a threaded hydrostatic bearing for engaging the threaded piston portion, with an oil-carrying groove in the nut being interrupted. A fluid emitting seal located at the entrance to each cylinder, can serve to center the piston within the cylinder, wash the piston, and to aid in sealing. The piston can have a long stroke to diameter ratio to minimize reciprocations and wear on valves at high pressures. The voltage applied to the motor can be reversed prior to the piston reaching the end of its stroke, to permit pressure on the piston to aid in reversing the motor.

Abstract: A device for compensating for gyro wheel frequency inaccuracies wherein a reference oscillator feeds a square wave signal to a first and second counter. The second counter also has an input of plus or minus the spin axis angular rate. The first counter scales down the reference signal and the second counter generates a signal having a frequency proportionately higher than the first counter. The output of the second counter provides a signal indicative of angular spin rate displaced from the input gyro axis. The outputs from the first and second counters are fed to an up/down counter which combines the two signals to provide for gyro wheel compensation.In a second embodiment of the invention a computer having spin rate axis signal from two gyros, control two settable counters to obtain compensation of the gyro wheel of a first and second gyro.

Abstract: An improvement in gas driven gyroscopes of the type having a gas driven reaction rotor and integrally contained gas source. A spring loaded valve in the bore of the rotor shaft opens to admit the driving gas to the rotor nozzles and then closes to shut off the gas passages during rundown of the rotor so as to extend the rundown time.

Abstract: A closed-loop controller for controlling the frequency of the power applied to a gyroscope synchronous motor to rotate the seismic mass (wheel) of the gyro so as to compensate for movement of the gyro case about the spin axis of the gyro is disclosed. The controller includes a sensor for sensing fluctuations in the current drawn by the gyro, said fluctuations being directly related to the fluctuations in the load angle of the gyro caused by movement of the gyro case about the spin axis. The current fluctuations create an analog voltage, which is amplified by several orders of magnitude. The result is used to modulate the frequency of the applied power so as to compensate for the load angle fluctuations caused by case movement about the spin axis. In essence, the controller reduces the frequency of the hunting mode of the gyro to a level below which movement of the gyro case about its spin axis has substantially no undesirable effect.

Abstract: A gyroscope with a solid rotor synchronous motor having three-phase square wave supply voltage is provided, and control circuitry including logic circuit components for periodically producing an amplitude modulation in the motor excitation voltage of constant frequency that results in a periodic slipping of a few degrees of the solid rotor relative to the electrical field is provided, whereby gyro drift errors varying sinusoidally in sense and magnitude in accordance with the relative rotation between field and rotor, balance out during each complete cycle of relative rotation.

Abstract: In order to eliminate the day-to-day gyro drift phenomena which result from interaction of the magnetic pole position of the synchronous motor typically used to drive the gyro and the gyro wheel, an induction motor controlled by a phase locked loop referenced to an appropriate control frequency is utilized to drive the gyro.

Abstract: A detector responsive to an angular offset between a gyrosphere of a gyrocompass and a tilt ring, forming part of a gimbal mounting therefor, controls a follower motor coupled through a reduction gearing with a suspension shaft for that mounting, the shaft being further coupled with a first synchro transmitter. A second synchro transmitter, electrically connected to several synchro receivers forming part of respective repeaters, is driven by a servomotor through a reduction gearing of step-down ratio 1:3 and is mechanically linked with a third synchro transmitter through a reduction gearing of step-down ratio 1:360, the third synchro transmitter being electrically connected to the first synchro transmitter for producing an error signal delivered through a feedback loop to the servomotor for keeping same slaved to the suspension shaft.

Abstract: A modulator for controlling the frequency of the power applied to a gyroscope to rotate the seismic mass (wheel) of the gyro so as to compensate for movement of the gyro case about the spin axis of the gyro is disclosed. The modulator includes a slow acting phase-locked loop that includes: a high frequency (e.g., 20 MHz) crystal controlled voltage controlled oscillator (VCXO); a divider for dividing the VCXO frequency down by several decades (e.g., six decades); a phase comparator for comparing the relatively low frequency output of the divider with a low frequency reference signal; a loop filter for filtering the output of the phase comparator so as to give the loop its desired dynamic response characteristic and bandwidth; and, a summing amplifier for summing the output of the phase comparator with a rate signal having a voltage level linearly related to the rate of movement of the gyro case about its spin axis.

Abstract: The invention provides a gyroscope employing a sensitive element rotated by a hysteresis motor and which has an improved bias repeatability, the bias arising from vibration of the sensitive element imparted thereto by the hysteresis motor. An identifiable point associated with the sensitive element (9) is sensed by first sensor means (37, 38, 67, 71) and a pole vector associated with the hysteresis motor (6) is sensed directly or indirectly by second sensor means (64), the outputs of these sensor means being applied to comparator means (73) which is operable to compare the phase of the pole vector (V.sub.p) with respect to the identifiable point. Control means (76, 79) are also provided which are responsive to the output of the comparator means (73) and operable to adjust the phase of the pole vector (V.sub.p) with respect to the identifiable point to a required relationship, the gyroscope further comprising means (73), for maintaining that required relationship once established.

Abstract: Arrangement for the controllable operation of valves, including mechanically cooperating elements powered by external energy and acting on the valve. An electromagnetic control device produces a positive force interengagement of the mechanical elements so as to effect the actuation of the valve.

Abstract: A gyro in which an elastomeric material is used as a spherical bearing suce in an air bearing type gyro to sustain 12,500 g set back acceleration level during gun launch and have the capability of surviving the launch phase in a non-functioning mode and then being operative in post-launch lower-g environments as a stabilized/torquing seeker capable of tracking laser illuminated moving target so as to enable the gyro to be used for guided projectile systems.

Abstract: This invention provides for a feeder tray which is journaled for rotation on a longitudinal axis and which includes two longitudinally extending cutouts, one for receiving fresh rounds of ammunition in sequence from a constant velocity train of ammunition and for transferring each round to the face of the gun bolt in aft dwell, the other for receiving the fired case and for displacing the fired case from the face of the gun bolt, and driven by a cylindrical cam system.

Abstract: A system which utilizes a free gyro motor drive circuit to control the sp and rotational direction of a gyro motor. The free gyro motor drive circuit includes a first sensing means for generating a up-down sinusoidal position signal and a second sensing means for generating a right-left sinusoidal position signal, both sinusoidal position signals having a frequency corresponding to the rotational speed of the gyro motor. A direct current error signal is fed into a first speed control circuit means along with the up-down sinusoidal position signal to produce an up-down motor control signal. Similarly, the direct current error signal is fed into a second speed control circuit means along with the right-left sinusoidal position signal to produce a right-left motor control signal. The up-down motor control signal drives a pair of up-down motor coils in the free gyro motor, and the right-left motor control signal drives a pair of right-left motor coils in the free gyro motor.

Abstract: Screen printing apparatus incorporating drive means for a squeegee comprising a drive motor, a lead screw rotatable by the motor and a rider for the lead screw, said rider being coupled to a mounting for the squeegee preferably through stroke adjustment means and the lead screw having two oppositely handed threads thereon such that rotation of the motor causes reciprocating motion of the rider longitudinally of the lead screw at substantially uniform speed.Adjusting means to adjust the distance between two members such as a printing head of screen printing apparatus and a table on which articles to be printed can be laid, comprising a pair of coaxial shafts, eccentric members secured on the shafts, bushes secured to respective ones of said members and means to rotate the shaft such that the eccentrics when rotated in the bushes cause the members to move relatively to one another by the sum of the eccentricity of the two eccentrics having regard to the angle through which they are rotated.

Abstract: Disclosed is apparatus and method for accurately determining the direction of true north or the change in drift of other gyroscopes. The apparatus comprises a single degree of freedom gyroscope driven by a permanent magnet electric motor. The gyroscope rotor is spun by the motor at varying speeds and the torque required to maintain the rotor at a null orientation is measured and recorded. The measured torques are processed to produce an accurate indication of true heading or to indicate the change in the level of drift of other gyroscopic instruments.

Abstract: A fluid actuated power device which includes a reciprocal cylinder rotatably mounted on a central, tubular shaft for back-and-forth movement along the shaft between a pair of end support members. The cylinder has first and second sets of spiral grooves on its outer surface, the first set of spiral grooves being in mesh with the spiral teeth of a first ratchet gear and the second set of spiral grooves being in mesh with the spiral teeth of a second ratchet gear, the ratchet gears being carried by a cylindrical body fixed relative to the shaft. The ratchet gears permit the cylinder to rotate only in one direction relative to and about the shaft as the cylinder moves back and forth along the length of the shaft. The cylinder is coupled by spline means to a gear assembly which, in turn, is connected to a rotatable second shaft, the latter serving as a power takeoff means which can be connected to external work-producing apparatus.

Abstract: An eliminator of vaporized contaminants from gas in a closed system in which high pressure gas is subjected to a substantially adiabatic expansion with accompanying temperature drop at a point where the contaminants cannot cause problems. In the specific case of a gas bearing, contaminants which normally condense in the gap between bearing surfaces are caused to condense at points well removed from the bearing gap where they cannot cause failure of the gas bearing. A remotely located expansion chamber or zone is created and it may include a restricting orifice at the inlet to which gas pressure is relatively high and at the outlet of which pressure is significantly lower. The pressure drop is accompanied by a comparably large decrease in temperature to a point at which the vaporized contaminants condense. A filter may be included at or adjacent to the outlet to trap the condensed contaminants.

Abstract: A low-friction light-load mechanical transmission for converting between rotary and linear motion, comprising a screw shaft having a helical thread groove, and a nut body having a radially movable socket member in which there is received a thread-engaging ball. The socket member has a circular load surface surrounding a circumference of the ball, and a second load surface centrally located with respect to the circular load surface and displaced laterally therefrom. The second load surface of the socket member engages the ball along a relatively small area thereof. The helical thread groove is characterized by a pair of co-extensive, helical troughs, each trough being partially circular in cross section. The troughs intersect one another adjacent the root of the thread groove, each trough having a radius of curvature slightly greater than the radius of the ball.

Abstract: A valve actuating device for causing both rotation and linear movement of a valve.

Abstract: A permanent magnet, direct current torquer for a gyroscope of the two-degree-of-freedom, free-rotor, force-rebalanced type includes a primary magnetic circuit having axially polarized permanent magnets, preferably of the samarium cobalt type, and flux focusing means cooperating therewith for directing the axial flux thereof in a radial direction for reaction with fields of concentric, axially-effective, frame-mounted torquing coils. The focusing means includes secondary annular axially-polarized magnets and a further magnetic circuit to minimize leakage flux. The primary and secondary annular magnets closely surround the rotor axis so that the amount of inertia of the rotor is minimized, desirably improving the sensitivity of the instrument.

Abstract: A transfer device for a printing machine transfers an object to be printed, for example a bottle, from a feed conveyor to a printing station. The device comprises a transfer member carried by a sleeve mounted on a shaft, and means for moving the sleeve and thereby the transfer member in a movement which is partially along the shaft and partially rotational about the axis of the shaft. The transfer device may be provided on a machine for printing a succession of objects, comprising a printing station, such as a silk-screen printing station, and a feed conveyor adapted to present the objects to be printed in sequence to the printing station. The transfer device transfers the objects one by one from the feed conveyor to the printing station.

Abstract: A gyroscopic type, infinitely variable, fully automatic, mechanical power transmission, speed changer, or torque converter capable of transmitting a wide range of output torques and automatically performing at the most appropriate input-to-output rotational speed ratio for the most efficient transmission of power in any given situation.In its most basic design, it comprises a rotatable main frame, two identical and separate sub-frame members which are rotatably mounted within the main frame, four identical gyroscopic-type rotors which are coaxially spin-mounted in pairs within the sub-frames, and two stators, one for each sub-frame, with each stator circumferentially positioned around the sub-frame member.Operationally, the rotors have radii of gyrations which are varied automatically in predetermined sequence in concert with the rotation of their sub-frame members.

Abstract: A gyroscope rotor uncaging apparatus is disclosed having a housing, a bearing structure supporting the rotor and permitting rotation of the rotor about its spin axis and about at least one other axis, and a constraining mechanism mounted on the housing at a location spaced from the first bearing structure, which initially cages the rotor for preventing rotation of the rotor about the at least one other axis. The solid propellant structure is ignited upon the rotor being accelerated and, upon the rotor being brought up to a desired rotational velocity, the solid propellant structure is consumed, whereupon the rotor is free to rotate about its at least one other rotational axis. The method of uncaging a gyroscope rotor with such an apparatus is disclosed. Also disclosed is a means for accelerating the rotor in conjunction with the uncaging apparatus.

Abstract: An implanted tether-free externally powered motor with suitable reduction gearing drives a spirally grooved shaft having a ring housing for a shaft follower pin. A rectangular cross section chamber receives an ejection plate pivoted near one end to a first leg of the ring housing and having a resilient lost motion connection with a second leg of the ring housing near its other end. A compressible sac or pouch extends through said chamber and is fitted at its opposite ends with porcine valves and has conduit extensions outwardly of said valves for connection with the left atrium and the descending thoracic aorta, respectively. During use, the sac or pouch is cyclically compressed by the ejection plate, initially at the end of the ejection plate having the lost motion yielding connection with the follower ring housing, and subsequently at both ends of the ejection plate so that a predetermined volume of blood is delivered on each stroke of the ejection plate to the thoracic aorta.

Abstract: Valve actuator for causing both rotation of a valve member and linear movement of said valve member.

Abstract: A multiple cylinder sinusoidal engine comprising a plurality of piston/cylinder arrangements lying parallel to, and around, a shaft cylinder is disclosed. Mounted in the shaft cylinder is a sine shaft, i.e., a cylindrical shaft having formed in its periphery at least one closed, double wave, continuous, sinusoidal groove. Coupling mechanisms couple the pistons to the sinusoidal groove or grooves of the sine shaft such that reciprocating motion of the pistons causes rotary motion of the shaft. Various air/fuel, exhaust and ignition passageways are provided through the sine shaft (or through the engine block in some embodiments) to allow air and fuel to enter the piston cylinders and exhaust gases to be emitted therefrom, and to allow ignition energy to be applied to air/fuel mixtures, as necessary. In one form, a single igniter is provided. The single igniter is coupled, sequentially, to each piston/cylinder arrangement as the sine shaft revolves.

Abstract: A power section and a converter section are disposed in end-to-end, tandem relationship. Linear motion imparted by the power section to a captive nut in the converter section propells the nut along the spiral flutes of a drive shaft rotatably journalled in the converter section, thereby converting the linear motion of the nut to rotary motion of the drive shaft.

Abstract: A mechanism for converting predetermined alternating rotational movements to rectilinear movements is embodied in a combination lock having a casing with an elongated recess, a bolt slidably mounted in the casing for axial movement between a retracted unlocked position and a projected locking position, the bolt being non-rotatable in the casing and having an axial cylindrical recess, a cylindrical cam rotatably mounted in the bolt recess and held against axial movement relative to the casing; the cam is formed with grooves in its cylindrical surface inclined in opposite directions lengthwise of the cam and intersecting each other at predetermined positions angularly disposed about the axis of the cam; the bolt mounts an inwardly projecting follower slidably fitting into the cam grooves and means are provided for manually rotating the cam alternately in opposite directions in accordance with the intersections of the grooves to cause the follower to move the bolt axially in the casing.

Abstract: A system for varying valve timing; i.e. the rotational angle of the crankshaft during which an intake or an exhaust valve of a cylinder of a reciprocating internal combustion engine is open which results in varying valve overlap, and for varying valve lift of such intake and exhaust valves. A desmodromic cam and cam follower convert rotation of a cam shaft to reciprocating rotation, or oscillation, of the cam follower. The reciprocating rotation of the cam follower is converted by the interaction of a secondary cylindrical cam, a cylindrical control ring, and a reciprocating member to linear motion of the reciprocating member which reciprocating member is operatively connected to a poppet valve. Timing and lift of the reciprocating member and valve are variable over predetermined limits as a function of engine rpm and load by rotation of the cylindrical control ring. Each valve train positively closes as well as opens its associated valve.

Abstract: A pulsatile flow pumping unit adapted to serve as a total cardiac replacement device, a cardiac assist pump for orthotopic placement, for extracorporeal application in conjunction with a membrane oxygenator for cardiopulmonary support during surgery or critical illnesses, for pulsatile flow coronary artery perfusion, and for filling and emptying of an aortic diastolic augmentation balloon for cardiac assist is provided. The pumping unit features simplicity of construction, comparative economy and reliability by utilizing a minimum number of working parts including a large diameter slitted rotary driver and cam operated follower means which avoids close machining tolerances and attendant high cost of manufacturing. The device automatically adjusts its rate of pumping in accordance with both preload (filling pressure) and afterload (pulmonic and systemic pressure) and in addition modifies its stroke volume in a downward direction when confronted with high afterload.

Abstract: The tool attachment for converting rotating into reciprocating motion comprises a hollow traveling body having a radial bore and an axial bore therein. A bearing housing is removably mounted in the radial bore. A ram is movably mounted in the bore's axial bore. The ram has on its outer periphery a single closed groove having a pitch depending on the desired reciprocating stroke of the ram. A roller is rotatably mounted in the bearing housing and has a portion thereof disposed in the groove. Restraining means couple the ram to the machine whereby the ram is restrained against rotation and unrestrained against longitudinal motion upon the rotation of the traveling body by a rotatable member of a machine fixedly coupled to the body.

Abstract: In a mechanism for controlling the motion of the weft carrying grippers in looms, the inlet movement is the rectilinear reciprocating motion of the small end of the final connecting rod of a linkage operated by the main shaft of the loom, and the outlet movement is the rotary reciprocating motion of a gearwheel controlling the straps for advancement of the grippers. The mechanism comprises a screw and a slider through which said screw passes, one of said elements being moved along a fixed rectilinear path by said connecting rod small end, while the other element is caused to rotate about its own axis, parallel to said path, to cause the rotation of said gearwheel. The mechanism comprises, further, rolling means, carried by said slider and being in engagement with the threading of said screw, to cause the rotation of one of said elements, as a function of the translation of the other element.

Abstract: A linkage is provided to simultaneously control two independent hydraulic drive motors for a vehicle, each having a control arm movable between a high speed position and a low speed position. The linkage comprises a control shaft having a pair of spaced-apart cam elements mounted thereon which engage each of the control arms to pivot them in opposite direction as the shaft is rotated. The linkage is also movable in an axial direction which thereby insures that both control arms reach corresponding high or low speed positions. For instance, if one control arm should reach a respective position prior to the time the other control arm reaches its corresponding position, further rotation of the shaft and cam elements therewith also results in axial movement thereof thus insuring that such other control arm reaches its corresponding position.

Abstract: Miniaturized precision speed gyroscope having high stability in time and as the temperature varies and suitable to withstand impacts. Such a gyroscope comprises a motor, the connections of which to the motor windings are provided with connectors, the bushings of which are within the shaft and the pins of which are in the set screws of the shaft. The differential transformer of the gyroscope has only one coil for each of the poles, is provided with a damping device with four crossing plates overlying four holes for adjusting the aperture thereof. The gyroscope contains a silicone liquid, in which three air bells enclosed within three resilient silver caps are immersed.

Abstract: The invention relates to a mechanism for transformation of a rotary motion into a translatory motion or vice versa, consisting of a curve follower for co-operation with a rotary cylindrical curve body, in which is designed a curved guide in the shape of a wedge-shaped track in the body, and where the curve follower consists of an inwardly pointing similar wedge-shaped ring with a larger diameter than that of the curved body, and which is located excentrically in relation to the latter in such a manner, that the inner edge of the ring meshes with the track. The ring is the inner ring of a roller- or ball bearing or is incorporated with such an inner ring while the outer ring or parts connected therewith are retained against rotation in relation to the curved body or vice versa.

Abstract: A torquer system for a gyro device that has a spherically shaped rotor divided into upper and lower hemispheres. The rotor of the gyro is mounted on a gas bearing over a spherically shaped stator and supports an optical assembly positioned parallel to the spin axis of the gyro. The torquer is positioned on the base of the gyro beneath the lower hemisphere of the rotor so as to permit the maximum angular freedom of the rotor and optical assembly. The torquer comprises four pole pieces separated 90.degree. from each other. Each torquer has two pole faces and coils located between pole faces. The coils contain separate windings for bias and control of the torquer. A current flow through the windings of the torquers causes magnetic flux lines emanating from the pole faces to pass through magnetically permeable material affixed to the lower hemisphere of the gyro rotor closing the magnetic circuit.

Abstract: A reversing nut construction for a diamond thread screw of the type having criss-crossed left- and right-hand grooves, the nut comprising an annular nut body having a through bore to receive the screw, a thread-engaging ball carried by the body and extending into the bore thereof, and a second thread-engaging ball also extending into the bore. The first ball has mounting means which enables it to undergo rolling motion, but is held against axial or lateral movement on the nut body. The second ball also undergoes rolling motion, but is further capable of being shifted axially of the body between oppositely disposed extreme positions, whereby it can travel along the left-hand groove of the screw when it is disposed in one position, or the right-hand groove of the screw when it is disposed in the other position. Yieldable detent means, comprising a pair of spring rings, selectively engage the movable ball and bias it into continuous engagement with the screw, while still enabling it to be shifted axially.

Abstract: A device for rotating a plurality of articles is formed with a substantially cylindrical passage, two helical paths being defined along the internal surface thereof; the helical paths are located diametrically opposite one another.

Abstract: Gyroscopic apparatus in which the rotor is elastically-connected to its drive, whereby deflection of the rotor bends the connection and thus sets up a deflection torque which acts upon the rotor. The connection of the rotor to the drive also includes masses carried by springs. When the rotor deflects, these masses oscillate in directions parallel to the driving axis, and when the rotor is spinning at a certain (tuning) speed the sum of the oscillating forces exerted upon the rotor by the individual moving masses will be a steady quantity which may be made equal and opposite to the deflection torque. The apparatus may thus behave like a "free rotor" gyroscope.

Abstract: A fluid actuated gyroscope having a hollow rotor provided with apertures defining nozzles through which compressed fluid within the housing flows to the interior of the rotor before being discharged. This flow causes the rotor to spin up to speed rapidly. Also described is a caging piston which, with its associated apparatus, performs the dual function of providing a passageway for venting the interior of the rotor during spin up and for caging and uncaging the gimbals.

Abstract: A number of identical molded segments are brought together to form a stack. Each segment contains intersecting left and right-handed helical guideways, each guideway defining about one-half the pitch of a thread. Each adjacent identical segment is oriented with respect to each other adjacent segment to provide a substantially continuous left and right-handed helical guideway. Each adjacent identical half-pitch segment is oriented about 180.degree. out of phase with respect to each other adjacent identical segment. A minimum of two identical one-half pitch segments is required to provide a reversing lead screw.

Abstract: A reactionless drive system is disclosed comprising in combination a base, a torquer mechanism, the stator portion of which is affixed to the counter-rotational inertia member and accepting control signals from sources external to the system. A rotatable member, coupled to the torquer, is driven in a first direction. A torque compensator consisting of stator and rotor members is coupled between the base and the first mentioned rotatable member in one instance, and to an oppositely rotating member in another instance. All the foregoing components act together to maintain angular momentum of the system during its operative mode to a value of substantially zero. An electronic subsystem is provided which senses the angular velocities of the rotating members and provides a feedback signal to the torque compensator.

Abstract: In accordance with one embodiment of the invention, a total cardiac replacement device or four chambered heart for orthotopic placement is provided. This device is a pulsatile flow, synchronous ventricular ejection pump which closely simulates the action of the human heart. An internal electrical drive motor is powered by radio frequency induction across intact skin without external connections. A grooved rotary shaft driven by the motor powers a linear follower disc in one direction to compress two blood compatible sacs which simulate the left ventricle and right ventricle of the heart by pumping blood through the aorta and pulmonary artery, respectively. Return movement of the follower disc in terms of rate is a function of right atrial and left atrial pressure and volume. Stroke volume of each simulated ventricle is independent of the other, as in the natural heart.

Abstract: Disclosed herein is an arrangement for counteracting mass unbalance in a rotatable assembly, such as the rotor assembly of a gyroscope. The invention proposes the use of two coaxially and mutually independently rotatably displaceable, mass eccentricity-producing balance weights, of which each can be assembled with a support element forming part of the rotatable assembly in any one of a great number of angular orientations.

Abstract: A fluidic/pneumatic, two-axis, free-rotor gyro in which the free-inertia or is gas bearing supported on a spherical portion of a rotatable gas bearing rotor, both rotors being connectable to controllable sources of drive fluid pressure for separate drive and pneumatic pickoff and torquer units, the pickoff units providing control signals representative of the frequency of each rotor. The invention includes a further aspect of comparator control circuits responsive to said control signals for selecting and maintaining the speed of each of the two rotors independently and in a ratio selected to provide G.sup.2 drift compensation. A further aspect of the invention comprises the compensation of case-erection drift by auto-erection drift by specific scaling of the gas-bearing and windage air gap parameters.

Abstract: A shock absorber having a pressure tube with metering bores defining metering orifices through which fluid is metered upon application of impact forces to a piston assembly slidable in the pressure tube, and an adjustable metering sleeve with ports adjacent the metering orifices for regulating the flow of fluid through the orifices.

Abstract: A high "G" gyro that has a rotor mounted relative to a stator by a fluidic earing with fluidic exhaust control means for producing a lower pressure at the exhaust for the fluidic bearing to prevent the exhaust from the fluidic bearing from impinging on other portions of the rotor to cause error signals to be produced. By locating the exhaust for the fluidic bearing radially outwardly from the inlet ports to the fluidic bearing, and by producing a lower pressure at the exhaust, the exhaust fluids from the bearing are attracted to the exhaust and prevented from impinging and exerting undesirable forces on the rotor.

Abstract: A double-acting can crusher comprising a frame, a shaft rotatably mounted in the frame, a substantially cylindrical sheath extending horizontally above the shaft in parallel relation thereto, a pair of spaced cylindrical crushing blocks mounted at the horizontal ends of the sheath, a substantially rectangular upper opening extending along the top portion of the sheath and being sufficiently wide to permit the passage of uncrushed cans into the sheath, a lower opening in the sheath extending longitudinally below the upper opening, the lower opening being sufficiently wide at the ends thereof to permit the passage of crushed cans therethrough but being sufficiently narrow in the central or major portion thereof to prevent the passage of uncrushed cans therethrough, a collar mounted on the shaft for movement back and forth along the shaft, an endless reverse helical groove on the shaft, a pin freely received in a hole in the collar and disposed at right angles to the shaft, an arcuate tongue on the pin received

Abstract: A system for varying valve timing; i.e. the rotational angle of the crankshaft during which an intake or an exhaust valve of a cylinder of a reciprocating internal combustion engine is open which results in varying valve overlap, and for varying valve lift of such intake and exhaust valves. A desmodromic cam and cam follower convert rotation of a cam shaft to reciprocating rotation, or oscillation, of the cam follower. The reciprocating rotation of the cam follower is converted by the interaction of a secondary cylindrical cam, a cylindrical control ring, and a reciprocating member to linear motion of the reciprocating member which reciprocating member is operatively connected to a poppet valve. Timing and lift of the reciprocating member and valve are variable over predetermined limits as a function of engine rpm and load by rotation of the cylindrical control ring. Each valve train positively closes as well as opens its associated valve.