Abstract: A laminar flow control valve has a valve housing with an inlet and an outlet, an orifice plate, a poppet, an operating mechanism such as an electrically powered proportional solenoid, and a mechanism for realigning the poppet and orifice plate to maintain selected surfaces of those components in substantially parallel relation. The gaseous flow is throttled between respective parallel surfaces of the orifice plate and poppet such that the volumetric flow rate is linearly proportional to the pressure differential across the parallel surfaces. The poppet is mounted to a stem of the operating mechanism so as to be free to move in more than one plane relative to the orifice plate. In the embodiment illustrated, the poppet is free to swivel so that the metering surfaces "self-align" each time the valves close. The preferred embodiment of the invention utilizes a flat orifice plate and poppet. The poppet is attached to a stem of the operating mechanism by mechanical means.

Abstract: A multi-functional valve has a combined safety, bypass, shut-off and inservice capability. The multi-functional valve is modified to attach directly to the cylinder of an exchange unit of water treatment. This multi-functional valve has a base member and a head portion. The base member fits onto the exchange cylinder. The head portion of the multi-functional valve includes a water receiving section capable of being tapped directly into the waterline. Mounted to the head section is a lever arm to move the valve to the desired position.

Abstract: A solenoid operated hydraulic control valve system including a solenoid operated valve having a specially ported spool valve to statically balance spool forces in the opened and closed positions.

Abstract: A piezoelectric on-off value for air conditioning comprises a bendable metal plate fixed at one end thereof; a valve member mounted on the other end of the metal plate along a ceiling plate, the value member having vent holes corresponding to vent holes in the ceiling plate, and the valve member changing the relative closure of the vent holes when the metal plate is deformed by application of voltage to the piezoelectric ceramic.

Abstract: A center flow ball valve assembly includes a pre-loaded spring positioned in line with the valve fluid inlet port for seating the ball in the valve orifice, the spring configured in stepped diameter coil sctions including a smaller diameter ball mounting section for cradling the ball and a larger diameter pedestal section which straddles the inlet port, the spring, with actuation of the ball valve permitting fluid to pass with minimum pressure drop through an unobstructed circumferential path between the different diameter coil sections.

Abstract: The flow restrictor is a unitary one-piece element that can be fabricated from either metal or plastic by casting or molding. In use, it is press fitted into a bore in a solenoid valve body to provide a certain restrictive effect. It has a circular cylindrical central core that has a series of flanges that are axially spaced by gaps. Each flange has a circular outer edge that is interrupted by at least one axially extending through-notch. These notches are arranged to provide a tortuous path for the fluid flow, and sized to create a desired restriction. The restrictor provides two parallel flow paths, one, the tortuous path just described, and two, a through-hole through the core of the restrictor.

Abstract: The invention is directed to a connection that can be easily made, produced at little expense, and can carry heavy loads. A housing block has a receiving bore with undercut portions, embodied by a groove, that extend over circumferential regions of this bore. A magnet valve has primary flange segments formed onto the valve body, which along their end face which face toward the opening of the receiving bore of the housing block are conically limited in cross section. These flange segments which extend over circumferential regions of the magnet valve body engage the undercut portions, formed in accordance with the cross section of the flange segments, in the manner of a bayonet mount type of connection. The connection is particularly suitable for use in hydraulic vehicle brake systems, where particularly strong forces between the magnet valve and the housing block must be absorbed.

Abstract: A sealed valve body housing a rotary valve rotated by a spindle. The spindle is connected to a disc mounted in a chamber in the valve body adjacent a valve body wall. Polyphase drive coils on the valve body wall induce a current in the disc, causing it to rotate. A pulse sensor mounted on the valve body detects the rotative position of the disc and a counter signals the power source to stop movement of the valve. The periphery of the disc is notched to permit the pulses to pass through the rotating disc and be counted. The torque of the disc can be increased through use of more sets of coils, more discs or gears interconnecting the spindle and the rotary valve.

Abstract: An electronic fuel injector for an internal combustion engine includes an electromagnetic coil assembly and a valve assembly responsive to the coil with the valve assembly including a valve stop having a sealing surface for contacting a valve pintle and a semi-floating pintle reciprocably mounted above the valve stop and having a first axial portion extending within an armature and a second axial portion which is not piloted and which has a sealing surface for contacting the sealing surface of the valve stop.

Abstract: The bidirectional rotation device comprises a direct current motor connected in series with a capacitor and a reversible switching means. When a direct current voltage is applied to the series-connected combination of direct current motor and capacitor through the switching means in one position, the charged capacitor causes the motor to rotate in one direction for a short period of time; and when the voltage is again applied to the combination in the reversed polarities, the reversely charged capacitor will cause the motor to rotate in the reverse direction.

Abstract: A valve has a housing having a nonrotatable polygonal-section stem centered on a valve axis and a spindle coaxial with the stem, projecting axially therefrom, and formed with at least one peripheral tooth. A valve actuator has an electric drive motor having a housing and a drive shaft projecting from the housing along the axis and a sleeve fixed to the drive-motor housing coaxially with the shafts and formed with a seat complementarily engageable with the polygonal-section stem. Thus the sleeve and drive-motor housing are rotationally locked to the stem. A coupling fixed on the drive shaft fits complementarily over the spindle at the tooth thereof to rotationally interconnect the spindle and drive shaft and a rotary potentiometer in the sleeve between the coupling and the drive motor has a rotary part fixed on the drive shaft and a nonrotating part fixed on the motor housing.

Abstract: Motorized damper apparatus including a conduit, a damper blade movably mounted within the conduit between an open position and a closed position, and mechanism including a motor for moving the damper blade between the open and closed positions. The damper blade is decoupled from the motor after movement of the damper blade from the closed position to the open position.

Abstract: A novel planetary roller type flow control valve, which can precisely control a flow rate and has a small friction, is provided.

Abstract: The present invention relates to a system of adjustable preformed ductwork for the conveyance of a fluid. The system uses a distribution box which includes an upper portion having a plurality of walls and a bottom plate. The distribution box may act either as a diffuser boot or as a splitter box. The distribution box is joined to interconnecting duct lines by adaptor conduits. The adaptor conduits are duct line which are adapted at one end for connection to an opening in a wall and are adapted at the other end for connection to adjoining duct line. A valve having a housing, a first cone and a second cone is also included in the system either in a duct line or in an adaptor conduit. The first and the second cone have matching apertures. The second cone is rotatable within the first cone such that the matching apertures may be selectively aligned or misaligned to adjust the flow of the fluid through the ductwork system.

Abstract: Metering valve assembly having a poppet movable relative to a valve seat for controlling communication through an orifice. The poppet is urged toward the valve seat with a closing force, and the poppet can be adjusted gradually to provide a fine adjustment of the communication through the orifice. An actuator is operably connected to the poppet to overcome the closing force and move the poppet rapidly to a preset position. When the actuator is not actuated the closing force urges the poppet toward the valve seat to provide a positive shut-off.

Abstract: An electromechanical valve assembly is provided for regulation of hydraulic or pneumatic flow. The coil assembly of the solenoid portion of the valve is spring biased against the valve assembly. The coil assembly can be rotated through a full 360 degrees about the valve assembly to allow connection to an electrical wiring harness.

Abstract: A valve has a piezoelectric drive in which a lever mechanism is provided with a prescribed lever ratio and includes a resilient steel fork for the amplitude transformation of the excursion of a piezoceramic element operating as a piezoelectric actuator, a valve lifter connected at one end to a deflectable end of the steel fork and at the other end to a valve needle of a fuel injection valve.

Abstract: A control valve, in which a valve body opening and closing a valve mouth is driven by a strain force of a piezostack, characterized in that an upper fixed portion of said piezostack is supported by a ring-like tapered surface or a spherical surface and a lower movable portion of the piezostack is combined with a valve body through a spherical bearing.The strain output can be surely transmitted to said valve body by holding the piezostack so that no movement other than a strain resulting from the application of voltage may be produced.

Abstract: A flow rate control valve including a valve chest having an open end, an inflow passage and outflow passage each having one end communicating with the valve chest and the other end opened, a valve seat provided at the end of the inflow passage or outflow passage communicating with the valve chest, a sheet-like diaphragm provided to tightly close the open end of the valve chest and a stacked-type displacement device made of an electromechanical transducing material exhibiting the maximum value of piezoelectric distortion constant at a higher temperature range than 100.degree. C. or above and which exerts a pressure on the diaphragm by its deformation to change the position of the diaphragm, thereby controlling the gap between the valve seat and the diaphragm.

Abstract: A water tap, comprising a motor-control water supply mechanism controlled by an infrared sensor via a control circuit board to open or stop the water passage therein automatically, and a manual-control water supply mechanism controlled by a revolving knob to open or stop the water passage therein manually during power failure.