Abstract: Apparatus for clearing drain lines includes an appliance which may be held in sealed engagement over a drain opening and actuated with a sudden burst of gas pressure. The appliance includes a pressure chamber which can discharge into a sealing ring and which for each operation is initially closed off from the sealing ring by a rupturable metal diaphragm. While the appliance is held by hand with its pressure ring firmly sealed around the drain opening, gas pressure is increased in the pressure chamber until the diaphragm suddenly ruptures to release the compressed gas into the drain with a sudden hammer-like action. The gas pressure may be supplied from a pressure can or by pump. This metal diaphragm may be a conventional jar-cap as used for home canning, except accurately scored to rupture at a predetermined pressure.

Abstract: A novel structure of pressure container is disclosed, wherein a safety valve is provided within an air injection valve of said pressure container, whereby even when the ambient atmosphere of said accumulator has been heated up to a high temperature because of a fire and the like, bursting of said pressure container may be prevented. A valve seat is formed inside of a valve casing and a fusible valve member is brought in contact with said valve seat, so that when the ambient temperature of said pressure container has been raised said fusible valve member may fuse to permit the gas pressure in the pressure container to be discharged to the exterior of the container.

Abstract: A non-return drainage valve adapted for use with a container for drainage of fluids from the container through the valve and for prevention of the passage of liquid into the container, the valve including a buoyant plug member and probe means movable with the plug member for clearing debris from the valve.

Abstract: A self-cleaning straining valve having an inlet, an outlet, and a flush port, in which a rotatable plug has a plug flow passage therethrough, the plug flow passage has, in addition to first and second openings at its two ends, a third opening therefrom through the plug wall, and first and second filter areas are respectively positioned in the first and third openings, the third opening communicating with the valve inlet and the first opening communicating with both the inlet and the flush port when the plug is rotated so that the valve is in a self-cleaning position, whereby in this self-cleaning position part of the incoming fluid from the inlet flows across the first filter area and then out the flush port, to clean the first filter area, and part of the incoming fluid passes through the second filter area, being filtered as it passes therethrough, then passes into the plug flow passage, and finally passes out through the first filter area and flush port, to backflush and thereby to further clean the first

Abstract: The outlet valve of a container for fluids is suspended from such container by a spring-biased safety closure mechanism that is protected from damage and has an actuating mechanism that breaks away with the outlet valve on impact capable of causing the outlet valve to permit discharge of the contents of the container.

Abstract: A sealed fluid conduit, closed with a diaphragm, contains a spike having forward and rear ends and adapted for moving to rupture the diaphragm with the forward end. A transversely-enlarged, flexible, axially collapsible portion of the conduit is positioned adjacent to the spike and adapted to permit manual movement of the spike from outside of the conduit to rupture the diaphragm. In accordance with this invention, a longitudinal groove is defined in the spike extending from the front end and terminating at a point between the front and rear ends. The spike defines an annular, enlarged sealing portion of a transverse dimension which is proportioned to sealingly occlude the portion of the conduit immediately forward of the transversely enlarged collapsible portion, the sealing portion being positioned between the terminating point of the groove and the rear end of the spike. The spike is positioned so that the enlarged sealing portion normally resides within the transversely-enlarged collapsible portion.

Abstract: The invention contemplates a single-piece injection-molded plastic hose clamp which may be made, shipped and stored flat and yet which, in assembly to a flexible hose may be applied to squeeze and effectively shut off flow through the hose in a one-handed shut-off operation wherein the shut-off condition is releasably locked. A hinged locking member on one arm of the clamp includes a bracket which, in reaction to the squeezing action to set the clamp, operates as a bellcrank to elevate the locking member to position for automatic resiliently loaded self-latching engagement with a coacting locking member on the other arm of the clamp.

Abstract: A new and improved ram lock for blowout preventer rams which permits locking of the ram at multiple and adjustable positions to compensate for wear on sealing elements of blowout preventer rams and increase sealing action of the ram without requiring separate special control lines. Automatic locking of the ram at a desired position, such as in sealing position, is obtained.

Abstract: A valve includes a plunger which is movable by actuating means such as a solenoid coil, air pressure or other means to move a valve member toward and away from a valve seat. The fluid flow area of the valve is sealed from the actuating means by the diaphragm, O-rings or other forms of sealing structure. In order to insure against leakage past the diaphragm or seal and especially against leakage into the actuating means, the construction includes another diaphragm or seal spaced from the first seal providing a seal space between the first and second diaphragms or seals. In the event of leakage past the first sealing means, flow of the liquid into the space between the first and second sealing means causes an outward flow of the fluid through a detecting passage which thereby provides means which disclose the leakage past the first sealing means so that the first sealing means can be immediately replaced before any damage to the actuating means or to the system itself.

Abstract: A valve control mechanism for operating a plurality of valves in a bank of valves which can be selectively operated by interchangeable lever arrangements one of which has a separate lever for each valve and another of which has a single lever for a pair of valves. The bank of valves and the lever arrangements are detachably removable independently of each other to permit easy servicing and selecting of the desired lever arrangement or to change the sequence of valve operation.

Abstract: A liquid mixing valve of the single handle type for mixing hot and cold water which incorporates a pair of plungers which are positioned in variable depth cams formed in a slider plate whereby actuation of the plate via a handle displaces the respective plungers from their seated position to permit passage of fluid therethrough.

Abstract: A mixer valve is disclosed for mixing hot and cold water, and controlling the outflowing volume by means of a single handle. The invention includes a control device outside the area to which water is admitted in the headpiece of the valve body and a wobble plate in the headpiece to control valve pistons. The wobble plate is carried by an axle bolt arranged on a secant in a bushing rotating around a fixed axis and being adjustable in its oblique position and its rotating setting by means of a lever assembly mounted in the bushing vertical to the rotational axis with an eccentric part engaging the wobble plate. The valve pistons preferably are tear-shaped and are mounted in spring tight suspension with the incoming water in the closing direction and housed and sealed by means of piston rods in the valve body with the piston rods in contact with the wobble plates at their top end-pieces.

Abstract: A combustion liner cooling slot is provided with a plurality of circumferentially spaced stabilizing dimples disposed in an annular lip adapted to facilitate attachment of a cooling fluid to the combustion liner in a protective film barrier. The stabilizing dimples are characterized by a depressed portion having a dimple ceiling of constant radial height and further having a decreasing circumferential width portion.

Abstract: Tubing through which fluid flow is to be regulated is placed in a regulating clamp wherein it is clamped between a roller wheel and a surface having a variable cross-sectional area channel extending therealong. This surface is parallel to the travel path of the wheel, and thus there is a constant separation distance between these two elements for all wheel positions. Flow rate through the tubing is changed by longitudinal adjustment of the position of the roller wheel, the ratio of the portion of the tubing which is clamped between the wheel and the surfact to that which is not clamped and over the channel thereby being varied. A plurality of ridge elements are formed in the surface and act to locally pinch or grip the tubing at discrete intervals, thereby substantially lessening creep of the plastic tubing.

Abstract: An electrical control device for an inflating valve for containers for compressed, liquefied or dissolved gas with a cylindrical plug of fusible non-conductive material in which is embedded a helically wound electrical resistor formed as a cylinder having an axis substantially parallel to the plug axis and adapted to be connected to an electrical source. The plug is maintained in the inflating valve by a sleeve provided with a cavity and radial openings. Upon closing of the electrical circuit, the resistor heats and melts the plug, the central portion of which escapes towards the upper portion of the cavity opening to open a passage between the port connected to the container and the discharge port of a rotatable fitting surrounding the inflating head. The present invention can be used advantageously to control the discharge of a gas contained in a container in a pneumatic capacity and especially an inflatable lifeboat.

Abstract: Valve apparatus is disclosed for discharging pressurized fire extinguisher fluid from a container. The valve includes a diaphragm which is removably mounted within a two-part housing to facilitate field replacement. The diaphragm is formed with a semi-spherical shell which is mounted across a passage in the housing with a concave side of the shell facing the pressurized fluid. The shell is fabricated of a metal which is pre-stressed so that the diaphragm ruptures above a predetermined fluid pressure for relieving over-pressure from the container. An annular rim of the diaphragm includes a ductile metal ring which is compressed between the housing parts into fluid sealing relationship with an annular knife edge seal. A squib cartridge is mounted in the housing to rupture the diaphragm and permit the fluid to discharge through the passage. A screen is mounted in the passage to screen out fragments of the ruptured diaphragm from the flow stream.

Abstract: A blow out ram preventer comprising a housing with a longitudinal cavity and a transverse through bore. Rams are arranged in the cavity of the housing to reciprocate therein relative to the bore. The transverse spacing between longitudinal guides at the walls of the cavity is uniformly reduced in the direction from the ends of the housing to the bore, the ram packer being reinforced from the bore side with radial metal members while the body of the ram is comprised of a plurality of members adapted to move relative to one another during movement of the ram.

Abstract: A pinch tube type valve adapted to be mounted to a liquid container receiver to accept an elongated flexible outlet tube protruding from a liquid container disposed in the receiver for selecting control of liquid flow through the tube from the container. The tube is passed through a passageway in the valve body for selective engagement by a stem which is reciprocable into and out of closing engagement therewith. The passageway is enlarged adjacent the inlet end of the valve body to permit easy insertion of the liquid container outlet tube therethrough. An apertured tube retaining area is disposed adjacent the outlet end of the valve body passageway to receive and retain the tube in a desired position relative to the container receiver to facilitate ease of liquid dispensing operations. The stem may also include a tube engaging protrusion arrangement when the valve is contemplated for use in pressurized liquid systems.

Abstract: A flexible tubular member for use in a pinch valve and through which fluid medium will flow in operation of the valve said member having in its bore diametrically spaced shoulders over which the immediately adjacent portions of the tube wrap as the tube is pinched closed by a valve plunger of suitable shape. The outside of the tube is surrounded by a fabric sleeve which lends circumferential strength to the assembly of tube and sleeve when the tube contains fluent medium under high pressure. The sleeve is such however to enable the assembly to be radially pinched at will to stop or control flow of the fluent medium through the tube.

Abstract: A combined airing valve and fire protection valve comprising an adjustable valve head and a fusible element which is easily influenced by heat so as automatically to induce closing of the valve when fire or overheating occurs. In order to avoid maladjustment of the valve head and possible consequent destruction of the fusible element, the fusible element which takes the form of a fusible nut, is disposed on a valve stem of the valve head so as to follow the valve head if the latter is inadvertently rotated by unauthorized persons.