Abstract: In order to make it possible to increase a diameter and output thereof, a diaphragm structure is provided that has low repulsiveness, can be largely deformed to increase a stroke even without being applied with a large force from an actuator, and is unlikely to give rise to a defect or fault even when formed thin, and a fluid control valve is provided with the diaphragm structure and the actuator that presses the diaphragm structure, wherein the diaphragm structure is provided with: a protruding part that is formed in a tubular shape and pressed by the actuator; a brim part that spreads from a base end of the protruding part outward with respect to the protruding part; and a support part that is formed on an outer circumference of the brim part and attached to another member, and the brim part is formed in a film shape.

Abstract: A bathtub faucet water switching structure includes: a hollow water passage body with a water inlet and a water outlet; a switching lever longitudinally installed at the front of the water passage body and having an upper end protruded from the faucet body and a lower end linked with the center bolt; and a center bolt movably installed to the water outlet and having first and second shaft portions, and a water stop plate installed between the first and second shaft portions. The first shaft portion is corresponsive to the lower end of switching lever, and a spring is sheathed on the second shaft portion, and the center bolt is moved horizontally back and forth in the water passage body by the action of the switching lever and spring to drive the water stop plate and water outlet hole to connect or disconnect a water path.

Abstract: A shaft sealing device switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because no abrasion accompanies movement of a sealing material or a sealing member, enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion disposed in a device body, and flow passages disposed in the shaft sealing portion for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body.

Abstract: A valve useable in an undersea apparatus for generating a force for closing a blowout preventer (BOP) based on a pressure difference between a low pressure recipient and ambient pressure, an apparatus including the valve and related methods are provided. The valve includes a valve body enclosing a chamber with an input port selectively connectable to an output port, and a chamber separating assembly configured to separate the chamber from a region of different pressure. The assembly includes (1) a backup plate having a first portion of a first diameter towards the chamber and a second portion of a second diameter larger than the first diameter, towards the region, and (2) an upper seat located between the first portion of the backup plate and the valve body.

Abstract: The water flow control structure of a water gun includes a movable control tube, stepwise positioning unit, oblique guide and resilient component. When the control tube is moved by the control component, it is turned by the oblique guide and stepwise positioning unit. Each time the first guide of the control tube coordinates with the position of the stepwise positioning unit, it makes the space between the stopper head of the control tube and the water control outlet of the water holder close or open in different degrees to control water flow. The entire control structure is hidden inside the water gun. The repeated movements of the control component can switch the water flow mode, which is convenient and practical.

Abstract: A rock-crushing rotary drill bit includes a body having a rock-crushing roller rotatably mounted thereon by bearings. The body includes a first flushing channel for conducting flushing fluid to flush the bearings, and a second flushing channel for discharging flushing medium outside of the bit body to flush away cuttings. The second flushing channel terminates in a discharge recess which defines a linear center axis. A nozzle is disposed at a downstream end of the discharge recess, and a valve element is disposed at an upstream end of the discharge recess. The valve element is spring-biased for closing the discharge recess, the valve element being openable against the spring bias in response to a sufficient pressure build-up of flushing medium within the second flushing channel. The valve element includes a guide structure for guiding the valve element for linear movement along the center axis of the discharge recess.

Abstract: A high flow emergency valve contained within an interior of a storage tank having an opening and a valve seat about the opening including a housing member for sealing and unsealing the valve seat, a push rod member for engagement with and activation of the housing to seal and unseal the valve seat, the push rod including a first portion positioned within the housing and a second portion extending out of a housing aperture to the tank exterior for manipulation from the exterior of the tank to open and close the valve seat, a sleeve member for substantially enclosing the first portion of the push rod within the housing and providing sealed sliding engagement between the push rod and the sleeve, a connecting member for attaching a portion of the sleeve against movement with respect to the valve seat, an engagement member between the housing and the sleeve for sealed sliding movement of the housing with respect to the sleeve, and a biasing member for maintaining the housing in a normally closed position with resp

Abstract: A hand held spray nozzle (10) for a kitchen faucet has a valve housing (12) with an elongated passage (20) and a valve seat (28). A valve element (36) has a frusto-conical elastomeric sleeve (40) engageable to the valve seat (36) and has a camming surface (44) mounted upstream from the elastomeric sleeve (40) and a stabilizer flange (48) mounted further upstream from the camming surface (40) and a spring seating end (50) which seats a biasing spring (58) which biases the valve element to the closed position. A push rod (62) engages the camming surface (44). The push rod (62) is canted from the vertical position at approximately (60) degrees and has an outer end (75) engaging a pivoting handle (78) where the thumb engaging section (82) is at a wall opposite abutment section (76) which engages the outer end (75) of the push rod (62).

Abstract: A valve assembly for use with a fluid-driven tool having an elongated conduit with a bore communicating with the source of fluid, and an elongated valve member received in the bore. The valve assembly has a ball received in a chamber defining a valve seat, with the chamber communicating with the source in order to drive the ball against the seat. The valve assembly has a valve pin extending through the conduit in order to actuate and move the ball away from the valve seat to permit passage of the fluid through the valve member past the seat, and a paddle for actuating the valve pin in order to open the valve.

Abstract: A multiposition selector valve of the rotary type includes a valve body having a single inlet port and a plurality of outlet ports. Fluid communication between the inlet port and any one of the outlet ports is provided via a check valve assembly mounted on the valve body, and via a fluid-providing conduit connected at one end to the inlet port via the check valve. The other end of the conduit is movable in rotary fashion for fluidtight engagement with any one of a plurality of valve seat areas associated with the outlet ports. The valve seat areas are integral portions of a flat metal disk that can be removed from the valve body to facilitate maintenance of the valve. A single handle rotates the conduit through its various selected outlet positions and operates the check valve assembly to open and close the valve at selected outlet positions.

Abstract: A pressure fluid operated limit switch, particularly for a device for controlling an adjusting element in dependence upon a control value and a reference value. The limit switch includes a housing formed with a recess in which a spring-biased valve member is positioned. The valve member normally abuts against a valve seat formed by a shoulder in the switch housing is at times moved away from that seat against the force of the spring in response to a condition of the adjusting element with which the limit switch is mechanically connected. In order to ensure rapid movement of the valve member away from its seat and thus preventing throttling of the pressure fluid when the switch is in its open position the valve member is provided with the actuating element rigidly connected thereto and carrying at its free end an axially slidable sleeve biased by a spring which is clamped between that sleeve and the valve member.

Abstract: A stuffing box for use in a control for an emergency valve for controlling discharge from a liquid storage tank, such as a gasoline storage tank, with the tank having an outlet port with a conduit member coacting with the port in depending relation therefrom. The stuffing box is adapted to be mounted on the conduit member and to extend from the interior to the exterior thereof. The stuffing box comprises a barrel member defining a passageway open at opposite ends. A crank including a shaft rotatably disposed in the passageway of the barrel member is mounted on the barrel member. Sealing means coacts between the shaft and the barrel member for sealing the shaft against leakage of liquid from the conduit lengthwise of the barrel member, and a releasable non-threaded detent is disposed generally adjacent the exterior end of the barrel member for locating and maintaining the shaft relative to the barrel member lengthwise thereof.

Abstract: A foam dispensing gun of the type having a disposable nozzle for mixing and dispensing separate fluid components of a resin system. The nozzle is retained on the gun by a sliding breech which also pivotally supports a valve actuating trigger to be in an operative position when the breech is moved to retain a nozzle to the gun and disabled when the breech is moved to release the nozzle for reloading. The breech and trigger may be further arranged so that the trigger is inoperative in the absence of a nozzle on the gun.

Abstract: A foam dispensing gun of the type having a disposable nozzle for mixing and dispensing separate fluid components of a resin system. The nozzle is retained on the gun by a sliding breech which also pivotally supports a valve actuating trigger to be in an operative position when the breech is moved to retain a nozzle to the gun and disabled when the breech is moved to release the nozzle for reloading.

Abstract: Disclosed is a portable, pulse-jet engine powered fog producing device in which the valve controlling the flow of the fluid forming the fog is of simplified construction utilizing a mating conical cavity and a conical, resilient valve member which is also provided with an integral shoulder forming a dynamic seal for the valve stem with respect to the valve body. A manual lever, having a unidirectional connection to the valve stem, has a locking and "dead man" feature.