Abstract: A steam generator having cold branch and hot branch zones defined, inside the secondary envelope, by vertical partitions separating the cold limbs from the hot limbs, and outside the secondary envelope by a skirt surrounding a portion of the latter on the cold branch side, forming therewith a space closed on its sides and at its lower portion while leaving a passage to the cold branch zone from the inside of the envelope. The space is open at the top so that recycled water can return to the bundle of U-tubes through both zones, but secondary feed water circulates for the most part in the cold branch zone. Recycled water may be distributed between the cold and hot branch zones, and the pressure in these zones may be balanced at the level of a horizontal, perforated tubular plate.

Abstract: A fluid heater embodies an upright shell with discs vertically arrayed in the shell interior. The discs are angled and configured induce spiral upward flow of hot gases, in external contact with the discs which themselves contain or pass fluid to be heated.

Abstract: This invention relates to a multi-pass helical coil thermal fluid heater of improved thermal efficiency. The thermal fluid is heated while being circulated within concentric helical coils of the heater which are arranged in such a manner to improve overall thermal efficiency and simplify construction. Provision is also made for preheating of the thermal fluid and the heater combustion air to further improve thermal efficiency.

Abstract: A steam boiler for use in small industry or business comprising in combination a holding tank and steam generation unit. Water from the holding tank flows into the steam generation unit at the same rate that steam exits the unit thereby maintaining a constant amount of water in the steam generation unit. The steam generation unit has a small water reservoir for producing steam rapidly when heat is applied by a burner. Steam exits the generation unit through a pipe which passes through the holding tank, thereby heating water in the holding tank and reducing the heat needed to generate steam. The steam exits the holding tank and is preferably directed back through the burner to be reheated before use.

Abstract: Disclosed herein is a marine propulsion device including an internal combustion engine having a water jacket with an inlet portion, a second portion, and a valve port communicating between the inlet portion and the second portion, a valve member movable relative to the valve port between open and closed positions, a recess extending from the inlet portion, a movable wall connected to the valve member for actuation thereof between the open and closed positions, which movable wall has opposite first and second sides and extends across the recess to define, on the first side thereof, a chamber located in the recess, and being subject, on the second side thereof, to the pressure of the water in the inlet portion, a water pump driven by the engine, having a discharge outlet, and communicating with the water during normal operation, a water supply conduit communicating with the discharge outlet and with the water jacket inlet portion, and including an overboard discharge branch conduit communicating with the atmosp

Abstract: A cooling fan assembly for a powered vehicle, preferably adapted for automotive use, and having a hub and a plurality of radial fan blades made integral therewith and of synthetic and resilient resin material, the assembly being characterized by the provision of externally knurled bushings and a spacer member, the bushings being coinserted in holes in the hub and the spacer member, the spacer member being fixed to the bushings at one end of the bushings and pressed to one side face of the hub.

Abstract: The air flow between the outlet of a centrifugal fan and the inlet of a surrounding annular radiator or heat exchanger for cooling an internal combustion engine is made uniform by rounding the peripheral edges of the fan wheel support discs so as to enlarge the effective outlet channel for the air and to guide the air in the direction of the lateral regions of the radiator. One or more baffle rings controls the short circuit flow to the inlet of the fan as well as the leakage flow at the shaft side of the fan.

Abstract: This piston design serves to increase engine horsepower, and causes less friction, while simultaneously reducing fuel consumption. It consists primarily of a propeller-topped piston, secured, by its wrist pin, in a rotatable swivel member in the top of a connecting rod, that is secured to an engine crankshaft.

Abstract: A two-stroke cycle gasoline engine including at least one two-stroke cycle power cylinder-piston assembly incorporating uniflow scavenging and two horizontally opposed pistons and two crankcases to perform crankcase compression, and at least one scavenging pump cylinder-piston assembly of the reciprocating type, wherein the power assembly has main and additional scavenging ports; the pump assembly has a first delivery port which supplies scavenging mixture to one of the crankcases of the power assembly and a second delivery port which supplies scavenging mixture directly to the additional scavenging port, the main scavenging port being supplied with scavenging mixture from the crankcases, wherein the top dead center of the pump assembly is, as viewed in the crank angle diagram, between the bottom dead center and the main scavenging port closing phase point of the power assembly, and wherein a means is provided so as to interrupt the supply of scavenging mixture from the first delivery port of the pump assembl

Abstract: The present invention relates to a variable valve timing system for an internal combustion engine which cyclically opens and closes a port providing fluid communication between a combustion chamber and a conduit leading thereto and which delays the closure of the port in response to a signal indicative of the power output required of the engine in order to vary the ratio of the mass of fluid inducted into the chamber to the mass of fluid expelled from said chamber during the period the port is open so that the mass of fluid retained in the chamber after closure of the port can be controlled without the use of a throttle valve.

Abstract: An engine controlling device includes an operating circuit (3) supplied with output signal of a knocking sensor (1) to generate a control signal which is used to effect an optimum control of at least one of ignition timing, exhaust gas recirculation flow rate, fuel injection quantity and fuel injection timing, to optimize combustion state of the engine. The device is further provided with an acceleration detector (5) whose output signal is supplied to the operating circuit (3) to generate a forced control signal during the accelerating condition of the engine regardless of the control signal derived from the knocking sensor (1). The forced control signal is used to control at least one of the above-mentioned control variables, and eliminates adverse influence of delay time in the control device to enable optimization of the combustion state even during a sudden acceleration.

Abstract: An ignition timing control apparatus for internal combustion engines is constructed to retard or advance the spark time of an engine when a knocking detector in the ignition timing control apparatus detects the occurrence or non-occurrence of knocking in the engine, respectively, and to retard the spark time by a predetermined angular value irrespective of an output signal from the knocking detector when a failure occurring in the knocking detector has been detected. Further, the ignition timing control apparatus may comprise alarm means which is actuated when a failure occurring in the knocking detector has been detected.

Abstract: A device is proposed for the adjustment of a quantity-metering member of a fuel injection pump in an internal combustion engine with self-ignition, comprising an electric circuit arrangement for a control signal dependent on operating parameters, this signal inffluencing the position of the quantity-metering member via an electromagnetic servo unit wherein the electric circuit arrangement includes at least one series circuit made up of a minimum value selection stage, a maximum value selection stage, and a servo unit controller for the quantity-metering member and the output signals of at least two set-point stages for, in particular, the speed, the smoke limit, equalization, and exhaust gas temperature can be fed to the minimum value selection stage with the maximum value selection stage additionally coupled to a start control stage. In addition to the use of the device as a total controller, i.e.

Abstract: A pressure regulator is provided for the fuel injection system of a spark ignition internal combustion engine. The regulator is designed to regulate the pressure at which fuel is delivered to the fuel injectors, this pressure being constantly referenced to a predetermined value for the purpose of maintaining the correct air/fuel mixture ratio for all conditions of use of the engine. In general terms, the regulator comprises an arrangement of various mechanical components which act to divide the flow of fuel delivered by a supply pump into two parts; one part of this flow is supplied to the injectors which take up the quantity required by the operating conditions of the engine, the remaining part being returned to the motor vehicle tank. To facilitate manufacture and assembly of the regulator, a particular form is given to the regulator valve element used to effect division of the fuel flow.

Abstract: A method for operating a fuel-supply system using a lambda-control apparatus for an internal-combustion engine wherein the amount of fuel to be supplied to the internal combustion engine is a function of signals representing the speed (RPM), the engine load, the exhaust-composition, and the temperature of the exhaust-gas sensor together with the attainment of a given temperature of the engine as an additional control criteria for the lambda-control apparatus. The method further includes deriving a temperature signal from the internal combustion engine to operate a threshold element with a hystereses whose switching values lie at about 10.degree. C. and 50.degree. C. to 85.degree. C. for optimum fuel mixture in the combustion chamber. The output signal of the threshold element can be further utilized for a supplementary warm-up fuel enrichment for better ignition characteristics, engine smoothness, and exhaust gas composition.

Abstract: Applicant's invention includes an improved fuel metering system which is particularly suitable for use with spark ignition and internal combustion engines controlled by digital computers programed to calculate repetitively a value representing a current transfer rate of the intake surface fuel and the calculated value being used to modify the rate at which fuel otherwise would be metered into the engine's intake passage. In particular, modification of the rate at which fuel is metered into the engine's intake passage takes into account the current equilibrium intake surface fuel quantity, the current intake system time constant, and the current actual intake surface fuel. From these quantities the current trend for rate of intake surface fuel is calculated. In a calculation of the current actual intake surface fuel, a previous value of the actual intake surface fuel is used in combination with a previous value of the transfer rate of intake surface fuel. Additionally, a clock is used to establish a time span.

Abstract: A fuel injection control system is disclosed for an internal combustion engine having fuel injectors. The system comprises fuel cut-off means operable for rendering some of the fuel injectors inoperative only when the engine speed exceeds a first predetermined value during engine deceleration and for rendering the remaining fuel injectors inoperative only when the engine speed exceeds a second predetermined value higher than the first predetermined value during engine deceleration. Control means is provided for increasing the second predetermined value when rapid engine deceleration occurs.

Abstract: A distributor injection pump for diesel engines is disclosed. The pump includes a hydraulically balanced distributor head housing the moving parts of a cam actuated opposed piston injection pump rotatably driven in synchronization of the engine. A single solenoid valve disposed along the spill path of the injection pump controls the timing and duration of the fuel injection pulses generated at each of the pump's distributor output ports.

Abstract: For the purpose of increasing internal combustion engine efficiency and of decreasing the polluting content of the engine exhaust, the present invention centrifuges a conventionally produced liquid fuel-air mixture to separate and maintain the liquid content thereof in contact with a heated surface to collect latent heat energy until the same is evaporated and then using the molecular spreading energy forces to attain substantially equally spaced fuel vapor molecules among all of the equally spaced air molecules as they move into the combustion chamber of the engine, to thereby assure a more complete molecular fuel-air mixture, for more complete, efficient and pollution emission free combustion.

Abstract: An ignition device for a multi-cylinder internal combustion engine having an ignition coil, also positive and negative high voltages being alternately generated across the secondary winding of the ignition coil, and a distributor, the distributor comprising a center electrode, two electrical distributing conductors in the rotor of the distributor, the center electrode being connected electrically with the two electrical distributing conductors, the electrical distributing conductors including at least one center conductor and two projecting conductors for distributing electric power to side electrode, two diodes having opposite polarities being connected between the center conductor and the projecting conductors for electrical distribution, respectively, and a plurality of side electrodes adapted to be electrically coupled successively with the projecting conductors according to the rotation of the rotor, whereby positive and negative high voltages are supplied alternately to the side electrodes through the c

Abstract: A dressing device for shaping grinding wheels for use in manufacture of gear wheels and the like, comprises an arm (4) supported intermediate its ends by a spherical bearing (5,9) for free angular movement about a fixed point (P) on the arm axis and for rotation about the axis. The working element (2) e.g. a diamond, is carried on the forward end of the arm and a control mechanism adapted for automatic electronic control is coupled to the rear end of the arm through a gimble (6,7). The control mechanism includes a pair of slide tables (17,20) having respective motors (18,21) for movement in mutually perpendicular directions (x,y) and a third motor coupled to a gear (24) fast with the arm for rotating the arm.

Abstract: A space heating apparatus includes a fuel tank and base assembly, a combustion chassis assembly supported on the base and supplied with combustion air for igniting and supporting a flame, and a top cover plate. The top cover plate includes a turret section providing a supporting surface for an upper cabinet assembly which is pivotally mounted on the turret. A mantle assembly is disposed in the cabinet to produce radiant heat and a portion extends down over the combustion chassis assembly. A slideable lower spill tray and an upper spill tray on the top cover plate provide ready access for detecting and cleaning kerosene spills, and for removing char and other debris.

Abstract: A system for heating the air in the room containing a fireplace includes a heat exchanger mounted at the top portion of the combustion chamber of the fireplace to extend across the chimney flue opening and a fan for circulating room air through the heat exchanger in heat exchange relationship with the combustion gases passing from the combustion chamber through a spin inducing heat exchange passage in the heat exchanger to the chimney flue opening.

Abstract: The present invention comprises a heat source wherein a vaned rotor (2) is rotatably supported within a cavity (18) formed in a casing (16). Inlet (42) and outlet (54) ports in the casing (16) respectively conduct heat transfer fluid to and from the cavity (18). Heat is generated by blocking the inlet (42) and outlet (54) ports while rotating the vaned rotor (2) to impart mechanical energy of motion to heat transfer fluid contained within the cavity (18). Frictional forces subsequently developed between layers of rotating fluid particles serve to convert essentially all of the mechanical energy of motion of the fluid particles into heat. After the heat transfer fluid reaches a predetermined temperature, the rotation of the vaned rotor (2) is stopped and the inlet (42) and outlet (54) ports are unblocked, thereby enabling the conduction of hot heat transfer fluid to a remote heat transfer surface (116). An electrical control circuit (C) governs the sequencing of the heat generating and transfer cycles.

Abstract: The present invention relates to a cyclic method and single pipe system for collecting and transferring heat energy from a periodic heat source to a thermal storage reservoir and preventing the back flow of such heat energy. The system is responsive to the temperature of the thermal storage reservoir and the availability of the heat source without reliance upon other external energy inputs or controls such as valves, pumps, floats, sensors, or electronic circuitry. During the heat collection stroke of the cycle an evaporator containing a volatile liquid generates a flow of vapor to a remote heat exchanger where the vapor gives up its latent heat of vaporization to the thermal storage reservoir thereby condensing. Condensate flows from the heat exchanger to an insulated pressure sustaining sump that efficiently accepts pulsatile fluid delivery.

Abstract: The collector comprises two thin stamped metal sheets, joined together by welding at their periphery, between which flows a heat-carrying liquid and is characterized in that said metal sheets are stamped with repetitive patterns whose concave surfaces are disposed opposite each other, but with staggering in their plane equal to approximately half a pitch, and in that the flat unstamped parts of said metal sheets are joined together by spot welds disposed substantially symmetrically and evenly in relation to said patterns.This collector is capable of resisting high pressures of the heat-carrying liquid.

Abstract: Male infertility is treated by increasing the concentration of testosterone in the seminiferous tubules by intratesticular injection of an aqueous suspension of testosterone and/or chorionic gonadotropins without correspondingly increasing the testosterone level in the blood plasma and thereby without substantially interfering with the secretion of the gonadotropins FSH and LH by the pituitary.

Abstract: A dressing for use in treating dry socket syndrome resulting from tooth extraction includes a gauze strip impregnated with a gelatinous material containing petrolatum, emulsifiers and an analgesic substance such as eugenol. In the process of making and packaging the dry socket dressing, a strip of gauze is unrolled from a roll and passed through a bath containing a gelatinous material at a rate to permit a six-inch length of gauze to incorporate approximately two grams of gelatinous material. The impregnated strip is then cut into predetermined lengths and thereafter packaged in a transparent, sealed envelope. The package containing the dry socket dressing is then treated with gamma radiation to sterilize the dressing and interior of the envelope.

Abstract: A directional sensor for the detection of a very feeble effort to breathe on the part of a patient whose breathing needs are under the influence and control of a mechanical ventilator. A self-heated thermistor assembly is mounted in a small diameter sensor tube. A diaphragm and chamber arrangement provides a low volume flow of air in the sensor tube past the thermistor assembly at a high velocity, so that a very small effort to breathe will draw a limited volume of air past the thermistor assembly at a high velocity, causing rapid cooling. The air will flow past the thermistor assembly in a first direction in response to an inhalation effort, and in a second direction in response to an exhalation effort. A heating element is arranged in the tube so that a first temperature-related voltage change is produced across the thermistor assembly when air flow is in the first direction, and a second such temperature-related voltage change is produced when air flow is in the second direction.

Abstract: A disposable medical irrigation device, manually operated, adapted for providing selective volume and stream intensity in liquid flow from a plurality of syringes. The device has a transparent reservoir vessel mounted upon a base which can rest upon a flat mounting surface and is resistant to tipping even when empty of liquid. The vessel provides liquid to flexible hoses that interconnect with syringes which are arranged to be hand held for ready aiming and directing of a stream of liquid from a nozzle onto a wound or the like for removing blood or other materials, including injury debris such as particles of clothing and the like. The syringes carry unique valve mechanisms so that a light pressure upon a squeeze bulb carried on a syringe initiates a liquid stream from the nozzle but the syringe can rest dribble free between uses. The device is arranged for readily assembly from easy-to-fabricate parts, and it can be sterilized and kept within a film pack until it is needed.

Abstract: A disposable diaper comprising a water-absorbing layer located between a liquid-permeable surface sheet and a liquid-impermeable backing sheet, wherein water-absorbing shrinkable fibers, which shrink in the direction of the fiber length and are rendered elastic on absorption of water, are fixed to and extend along the central portion in the lengthwise direction of the disposable diaper in such a manner that the water-absorbing shrinkable fibers are not placed on top of the water-absorbing layer, and wherein means is provided so that the water-absorbing shrinkable fibers become wetted when the diaper is wetted, said water-absorbing shrinkable fibers exhibiting a percent shrinkage of at least 15% and a shrinking force of at least 100 g when said fibers are wetted.

Abstract: A sanitary napkin having a fluid directing means around an absorbent layer is provided. The napkin has a fluid impervious baffle covering the undersurface, extending up the sides and terminating along the longitudinal periphery of either side of the top surface of the layer. In a particularly preferred embodiment, two absorbent batts are utilized and fluid directional means are provided to direct the fluid in a cross direction extending under the longitudinal top covering portions of the baffle along the sides of the topmost layer and terminating between the bottom surface of the upper layer and the top surface of the lower layer.

Abstract: Structure for and a method of separating tissue pneumatically comprising a source of gas under pressure, a regulator for regulating the pressure of the gas, and flow controls for directing the pressure controlled gas to a disposable gas directing stem and head assembly, and the method of use of such structure comprising directing gas under controlled pressure and direction toward tissue to be separated.

Abstract: An instrument for making out the central optical zone of the cornea having an oblong body featuring the edge of one of its ends sharpened, while the diameter of the body across said end equals a preset diameter of the central optical zone, and a sight is accommodated inside the body square with the longitudinal axis thereof, the sighting point of said sight lying on the longitudinal axis of the oblong body of the instrument.

Abstract: A cardiac pacemaker of the type responsive to heart activity to affect the operation of the pacemaker. Detecting circuitry is provided having a differential input and an essentially polarity independent degree of response to sensed signals. A single polarity output signal is provided representative of sensed signals of either polarity. In a preferred embodiment, a differential input and differential output preamplifier is responsive to sensed signals to provide output signals of opposite polarity but like absolute value. An absolute value circuit responds to the opposite polarity signals to provide a single polarity output signal, the output signal being the same polarity without regard to the polarity of the sensed signals.

Abstract: A pair of doppler type ultrasonic transmitters and receiving devices are employed, one operating at a frequency lower than the other. Each of the devices are connected to a demodulator to produce first and second doppler frequency signals, one indicative of vascular blood flow, the other indicative of movement of the vascular wall. The doppler frequencies are fed to a signal processing circuit and a reference stage received as its input, the output of the signal processors. The reference stage produces an output signal on coincidence of the two input signals which is indicative of the heart-beat frequency.

Abstract: A medical testing device for determining whether the amniotic membrane has ruptured, and alternatively, for rupturing it. Finger-engaging means hold an elongated flexible member to the digits of a finger so as to be flexed when the finger is flexed. A lancet or hook is formed at one end of the flexible member, and projects angularly from it. The hook tip is engageable with a rupturable sac carried by the device. The sac contains a pH indicator which, when exposed to fluids in the cervix, changes color if the amniotic membrane has ruptured. The sac is ruptured by flexing the finger to tension the sac over the hook tip, so that the hook pierces the sac and exposes the pH indicator to the cervical fluid.

Abstract: Epicardial pacing lead for affixation to epicardial heart tissue either onto the forward facing portion of the heart or behind the heart during thoracic surgery. A stylet controls a helical fixation screw in an electrode head of the pacing lead in that the stylet is turned thereby advancing the helical fixation screw beyond the planar surface of the electrode head. The epicardial pacing lead includes two embodiments which can be used in the unipolar mode of operation and one embodiment which can be used in the bipolar or unipolar mode of operation. The epicardial pacing lead requires no special tools and can be applied to the epicardial tissue with the use of surgical forceps or clamps. The pacing lead can be connected to a pulse generator located adjacent to the epicardial tissue under the skin and can be used for atrial or ventricular pacing.

Abstract: A pacing electrode for rapid endocardial insertion for pacing from the right atrium of a patient and for interconnection with a pacemaker includes a flexible conductor having an outer, electrically insulating sheath about the conductor with a flexible curve at one end of the conductor and an exposed terminal along the flexible curved end. The terminal is adapted for making electrical contact with an inner heart surface, preferably within the right atrium. The curved end of the electrode is straightened during insertion through the circulatory system, and thereafter permitted to resume its curved configuration after entering the heart. A wing extends laterally from the sheath at a position outside the patient's body after the curved end has been inserted into the heart.

Abstract: A smoke filtering and cooling device is removably mounted within a cylindrical vertical passage in a tobacco smoking water pipe through which smoke is upwardly directed. The device comprises a selectively expandable/retractable portion which is engageable with the passage wall whereby the device is mechanically supported and a fluid-tight seal is provided so that a quantity of water can be retained in the passage around the device. The device further comprises or defines passageways whereby the smoke is directed through the water for filtering and cooling as it passes through the pipe. A plurality of devices may be arranged one above another in the same water pipe to increase efficiency.

Abstract: Described are compounds having the generic structure: ##STR1## wherein the dashed line represents a carbon-carbon single bond or a carbon-carbon double bond and wherein R.sub.2 is methyl or hydrogen; R.sub.6 is methyl or hydrogen; R.sub.1, R.sub.3 or R.sub.7 represent methyl or hydrogen, with the proviso that one of R.sub.1, R.sub.3 and R.sub.7 represents methyl and the other two of R.sub.1, R.sub.3 and R.sub.7 represent hydrogen; wherein R.sub.4 and R.sub.5 are the same or different and each represents hydrogen or C.sub.1 -C.sub.3 lower alkyl.

Abstract: A tobacco smoke filter having an improved tar/carbon monoxide ratio is disclosed. The filter is obtained by sealing off the center portion of the filter with an inner member which is impermeable to the passage of smoke, thus directing all of the smoke to the periphery of the filter. In one embodiment, the inner member is formed as a thin walled tube of a material such as polypropylene, with the tube being crimped to seal one end of the tube. The crimped tube is then overwrapped with a smoke permeable material.

Abstract: A hair frosting or tipping cap for accurately selecting a uniform distribution of particular locks of hair to be color treated (dye, bleach or tint) or any other treatment where a particular density of hair is desirable while shielding the remaining hair in order to achieve a desired intensity of hair to be treated. The device allows a person skilled or unskilled in the use of a frosting or tipping cap to achieve selective variable intensity of hair to be treated. The cap includes a plurality of hair receiving, puncturable areas forming apertures uniformly spaced about the cap surface and two or more indicia means such as color coding which are affixed in proximal relationship to particular apertures in preconceived patterns whereby the indicia means provide readily visible information to direct the user to select particular apertures through which locks of hairs are pulled out to achieve a particular desired level of intensity of color.

Abstract: A tubular valve for controlling the flow of fluids includes an outer tubular shell having pairs of ports on diametrically opposed surfaces and an inner coaxial transfer tube having pairs of openings which are selectively rotated into or out of alignment with the outer tubular ports. Deformable grommets enclose and seal the space between the outer shell and inner tube and provide lateral tubular extensions projecting through the outer ports for connection to external sources and apparatus. The inner transfer tube, which is rotatable within the grommets, provides communication for fluid flow between inlet and outlet ports and openings. Different fluids may be selectively controlled and supplied through separate outlets.During assembly, each deformable grommet is folded around an insertion device which is inserted into the outer tubular shell and twisted to release the tubular extension which projects laterally from the port.

Abstract: An apparatus for introducing powdered solids into a liquid stream at a controlled rate to form a slurry. Solids are metered to an eductor where they are educted into the liquid stream. An automatic cycle timer-controller purges eductor, hopper and piping of residual solids before solids flow is initiated, and following solids flow. Pressure sensors detect low water pressure and/or plugging, shutting off liquid and solids flow.

Abstract: An improved check valve for a backflow preventing valve of the type having an inlet passage, an intermediate chamber, and an outlet passage, includes a stationary valve port fluidly communicating with the intermediate chamber, a movable contoured valve seat for sealing the port, and a valve closing apparatus in rolling engagement with the valve seat and responsive to the pressure differential thereacross. The valve closing apparatus urges the valve seat to a valve closed position and includes a stationary shaft, a pair of rollers, and a spring. The spring biases the rollers against the contoured valve seat to thereby effect the closure of the seat member against the valve port. An improved exhaust valve is also provided and includes a balanced valve member providing a path between the intermediate chamber and the atmosphere when in a valve open position. The balanced valve member is resiliently biased between a valve seat and a moveable diaphragm.

Abstract: An electrohydraulic control arrangement comprising at least one terminal plate having an inlet port connected to a pump pumping fluid under pressure from a tank and an outlet port connected to a return conduit leading to the tank and a plurality of consumer plates having consumer ports connected to consumers of pressure fluid. All plates are arranged side by side and held in abutting relationship by tightening screws extending through axially aligned bores through said plates. The plates are further provided with three axially aligned fluid channels therethrough, one to be connected to the inlet port and the two others to the outlet port. The selective connection of the fluid channels to the respective ports is accomplished in the terminal plate by a control slide movable by auxiliary valves, one of which is controlled by an electromagnet and by an additional control slide in each of the consumer plates, the position of which is controlled by two additional auxiliary valves.

Abstract: A spring-loaded safety valve has a housing with inlet and outlet, a valve member mobile between open and closed positions, a valve spring urging the valve member to the closed position and having a tendency to vibrate during the operation of the valve, and vibration-disturbing element for damping the vibrations of the valve spring during the operation of the valve. The vibration-disturbing element may be formed as a damping load or a damping spring which urges a valve spindle in direction of opening of the valve.

Abstract: A single lever mixing faucet is disclosed of the type generally used as a household sink faucet. The lever is operated by hand and controls individual diaphragm valves by plungers which are actuated by a cam operated by the lever, the cam having a wedge actuator connected to be moved by the lever in two orthogonally related directions and combinations thereof upon manual movement of the lever. The wedge actuator is mounted for essentially planar movement without rotation and has flat cam surfaces engaging flat ends of said plunger to move the plungers and control the rate of flow of water as well as the relative proportions of hot and cold water.

Abstract: A non-return valve comprises a valve body 1 which supports the upstream end of a valve closure means 2 formed by a sleeve of flexible but impermeable material. Closure support means 3 of a skeletal structure are positioned within the valve closure means 2. Forward flow through the valve is relatively unimpeded, but reverse flow causes the valve closure means 2 substantially sealingly to collapse upon the closure support means 3. In one of the principal applications of this non-return valve, the valve body 1 is the efflux duct of a fan.