Abstract: A solenoid-operated valve particularly for use in a speed-responsive power steering system on a motor vehicle comprises a valve housing having two ports opening into a bore in the housing, a spool axially slidable in the bore and slot defining a bypass passageway extending between the two ports and variable in cross section upon axial movement of the spool. The spool is spring-biased in a direction to close the bypass passageway, but attractable by an energized solenoid to open the bypass passageway when the solenoid is supplied with an electric current dependent on the speed of travel of the vehicle. The spool has therein a restrictor disposed in the bypass passageway adjacent to the slot to restrict the flow of a fluid through the bypass passageway into and out of the bore in the housing.

Abstract: A flushing apparatus comprising, a housing having an inlet, an outlet, a passageway communicating between the inlet and outlet, with the passageway including an insert defining a relatively small bore. The housing has a relatively large bypass channel communicating between the inlet and outlet separately from the passageway, with at least a portion of the channel being defined by a tubular section having flexible walls defining a lumen. The apparatus has a valve member movable between a first closed position with the valve member bearing upon the tubular section such that it blocks the lumen with fluid passing at a relatively slow rate between said inlet and outlet through the bore, and a second open position with the lumen being substantially open such that the fluid passes between said inlet and outlet through the channel at a relatively fast rate.

Abstract: A flushing device comprising, a housing having an inlet, an outlet, a cavity communicating between the inlet and outlet and defining an annular valve seat, and an opening communicating with the cavity, with the valve seat facing away from the opening. The device has an elastic valve element received in the cavity with an annular valve portion sealingly engaged against the seat. The valve element has a stem extending through the opening and the stem sealingly engages against the portion of the housing defining the opening. The valve element has a passageway extending therethrough and communicating between the inlet and the outlet, and the device has a relatively large channel communicating between the inlet and seat and between the seat and outlet. The device has an insert extending across the passageway and having a relatively small bore.

Abstract: A cock for low-pressure bleeding of a gas from a gaseous mixture, said cock having a body (1) with an inlet (12) and a pumping outlet (13) for the mixture and a bleed outlet orifice (15), and a valve (2) which co-operates with the valve body and is situated between said orifice and the inlet, wherein the valve includes a semi-permeable membrane with a first surface (6A) which communicates with said inlet and a second surface (6) which communicates with said bleed orifice, the valve assuming a first position in which it allows the mixture to pass directly from the inlet towards the bleed orifice when the pressure of the mixture is lower than a given pressure, and a second position in which it closes the bleed orifice when the pressure of the mixture is higher than said given pressure, the gas to be bled off then passing through said permeable membrane.

Abstract: A ball valve is provided for cleaning out piping systems between steam boilers and turbine generators of electrical power generating plants prior to start up operations. The valve is designed to minimize impingement between foreign substances trapped in the pipelines and the internal valve passages, and to reduce thermal shock to the piping systems when the valve is opened to atmosphere to rid the system of said foreign substances.

Abstract: A device including a valving mechanism which can be operated by one hand. The device includes a housing which surrounds a resilient block of material. The housing may be squeezed to depress and deform the resilient block. Passageways extend through the resilient block to conduct liquid therethrough. A first passage includes a solid valve positioned therein. Compression of the resilient block breaks the seal around the valve by distorting the passageway to allow flow therethrough. A second passage includes a capillary to allow continuous low volume flow not controlled by an operator.

Abstract: An automotive type carburetor is provided with an air bypass channel routing idle speed air flow around the closed throttle valve; the bypass channel containing a spring closed poppet valve having an adjustable volume internal channel connecting air to opposite sides of the valve at all times in a restrictive manner, the movement of the poppet valve and the volume of flow through the internal air flow channel being controlled by a solenoid operated plunger to progressively increase or decrease air flow from a minimum provided by the flow through the internal passage to a maximum provided by flow past the unseated poppet valve in addition to flow through the internal passage.

Abstract: A flow regulating assembly and components are provided for a catheter system. The assembly provides a regulated flow of medical fluid with an intermittent operator-controlled large-volume flushing flow. The assembly includes a flow-occluding piston reciprocal within a housing to move from the regulated flow position to a position completely out of the path of fluid flow from the inlet to the outlet. Actuation of the piston is from the exterior of the housing, and adjustment of the regulated flow volume is also effected from the housing exterior. The assembly components may be sterilized and fitted together in a clean room without welding or gluing being necessary.

Abstract: A metering device for a fuel control system includes a block having a pair of parallel transverse bores which are interconnected to a pair of parallel longitudinal bores so as to provide a plurality of passageways in which appropriate valves may be placed.

Abstract: Liquid flow control devices are described particularly useful for attachment to an infusion administration set including an infusion liquid container connected by a line to an infusion needle, comprising: a conical socket member at one end of the device for connecting same to the infusion container side of the line; a conical pin member at the opposite end of the device for connecting same to the infusion needle side of the line; and fixed-rate liquid metering components including a stem formed with a metering groove and an overlying sleeve, the metering components being located between and communicating with the socket and pin members for metering the liquid flow therebetween according to a preselected fixed rate. The overlying sleeve is resilient and includes a pair of spaced apart protuberances which provide a finger gripping portion and enable the resilient sleeve to be deformed for providing an enlarged flushing passageway for the liquid.

Abstract: A flow control apparatus having a flow passage with an inlet and outlet is provided in a housing. A control means having a conical valve seat and ball member for restricting flow through the seat is provided in the inlet of the passage. A valve plunger slidably located within the housing is resiliently biased against a second valve seat provided in the passage walls of the housing. The plunger includes a marine bore capillary passage which effectively bypasses the second valve seat, thus permitting a first low flow. When the plunger is moved from its seat, a second higher flow is established for flushing the device. This second higher flow rate is controlled by valve control means in the inlet of the passage to prevent excessively high flow rates.

Abstract: A flow control apparatus is disclosed which is particularly useful in liquid flow systems for blood pressure monitoring in humans and other animals. A resiliently biased valve plunger is provided with a marine bore capillary passage extending from one side of the plunger seating area to the other, thus establishing a first, low flow path. When the plunger is moved from its seat, a second, high flow path is established which flushes the apparatus. In one embodiment, the apparatus is combined with a pressure transmitting diaphragm assembly used to transmit pressure to instrumentation, the flush flow then serving to sweep air from the plenum above the diaphragm.

Abstract: A flow regulating device provides continuous, regulated flow of a medical fluid, as well as intermittent, manually controlled larger flows of fluid to a catheter system. Such apparatus includes a control member having an inlet means adapted to be connected by tubing to a source of medical fluid and an outlet means adapted to be connected by tubing to a catheter. A flexible conduit defines at least a portion of a first passage between the inlet means and outlet means of the control member. A cylindrical, hollow extension extends from the outlet means coaxially within and to about the midsection of the flexible conduit. Positioned in the flexible conduit is valve means adapted to open when the conduit is squeezed, thereby providing the larger, intermittent, manually controlled flow of fluid to the catheter system, and to automatically close when the conduit is released.

Abstract: An apparatus for providing continuous flushing of intravascular catheters. The apparatus consists of a small block having passages which define a continuously open path through which flushing solution is introduced into a catheter. A flow resistor is placed in the continuously open path in order to limit the flushing solution to a desired small amount. At least a portion of the block consists of a resilient sleeve which surrounds the flow resistor. The resilient sleeve provides a by-pass passage around the flow resistor. A disk placed in the by-pass passage cooperates with the resilient sleeve selectively opened to permit relatively large amounts of flushing solution to be introduced into the catheter when desired.

Abstract: There is disclosed an adjustable fluid flow restrictor for controlling the rate of fluid flow into a conduit, the restrictor having a body which seals the central opening of a fluid chamber and through which body there is a central opening having a cylinder section and a truncated cone section the cylinder section having a set-screw engaged therein, the threads thereof forming spiral grooves through which fluid maybe conducted at a rate controlled by positioning the end of the set-screw adjacent the walls of the truncated cone section to obstruct and adjustably close the openings into the spiral grooves thereby restricting the rate of fluid flow. An alternate form of the restrictor employs a ball-valve between the set-screw and the truncated cone section, the space between the ball-valve and the walls of the truncated cone section being adjusted by the set-screw to restrict the flow of fluid.

Abstract: An automatic air deflation valve is provided for use with a sphygmomanometer type blood pressure measuring instrument. The valve comprises a housing having an air flow channel extending through the longitudinal extent thereof and at least one air deflation port extending outwardly from said channel. The port includes a deformable diaphragm supported only on its outer edges and having a central aperture extending through the thickness thereof. The diaphragm is adapted to deform in accordance with the air pressure applied against it from said channel to automatically adjust the size and shape of said aperture, thus producing a constant air deflation rate therethrough.

Abstract: A flow regulating device provides continuous, regulated flow of a medical fluid, as well as intermittent, manually controlled larger flows of fluid to a catheter system. Such apparatus includes a control member having an inlet means adapted to be connected by tubing to a source of medical fluid and an outlet means adapted to be connected by tubing to a catheter. A flexible conduit defines at least a portion of a first passage between the inlet means and outlet means of the control member. Positioned in the flexible conduit is valve means adapted to open when the conduit is squeezed, thereby providing the larger, intermittent, manually controlled flow of fluid to the catheter system, and to automatically close when the conduit is released. A second passage in the control member connects the inlet and outlet means, and in combination with flow restriction means therein, provides the continuous, regulated flow of fluid to the catheter system.

Abstract: A device for mixing and dispensing a flow of liquid concentrated beverage ingredient from a constant volume pump with a pressurized diluent supplied from a source at a preselected flow rate through a flow control device. Diluent flow and liquid concentrate flow intersect and converge into a common fluid passageway which, in turn, flows into a fluid chamber formed by a housing. A tubular spout containing first and second restrictive orifices extends into the chamber formed by the housing and is sealed thereto by a pair of seal rings. The tubular spout can be rotated to a first or second position dependent upon the consistency of the liquid concentrate desired to be dispensed, thereby selectively permitting fluid to flow through the first orifice or both orifices. The unmixed diluent and liquid concentrate in the fluid chamber flow through the orifices and are mixed therein resulting in a homogeneous and uniformly mixed beverage.