8756 results about "Safety valve" patented technology

Systems and methods provide a programmable or controllable infusate delivery with minimal power consumption using controllable valves and with safe and reliable operation of the delivery system. Embodiments provide programmable control without the need for implantable power sources using multi-stable valves and / or mono-stable valves which are powered externally when activated. Embodiments provide for very low power programmable control, such as by employing micro-electromechanical system valves and a flow restrictor array. An external program controller may be utilized to provide a user interface and which may communicate with the controllable infusate delivery system using wireless links. Internal controller circuitry may provide for flow control changes for different activities or times of day and / or in response to changes in pressure, temperature, etcetera. A safety valve configuration may be implemented which provides a safety flow valve configuration which responds in an opposite manner to particular events than does a corresponding primary flow valve.

Secondary resonant pickup coils (102) used in loosely coupled inductive power transfer systems, with resonating capacitors (902) have high Q and could support large circulating currents which may destroy components. A current limit or "safety valve" uses an inductor designed to enter saturation at predetermined resonating currents somewhat above normal working levels. Saturation is immediate and passive. The constant-current characteristic of a loosely coupled, controlled pickup means that if the saturable section is shared by coupling flux and by leakage flux, then on saturation the current source is terminated in the saturated inductor, and little detuning from resonance occurs. Alternatively an external saturable inductor (1101, 1102) may be introduced within the resonant circuit (102 and 902), to detune the circuit away from the system frequency. Alternatively DC current may be passed through a winding to increase saturation of a saturable part of a core. As a result, a fail-safe pickup offering a voltage-limited constant-current output is provided.

The present invention provides a bi-directional ball seat and method of use. In at least one embodiment, the present invention provides a fluid control system that includes a radial protrusion that can be selectively engaged and disengaged upstream and / or from a ball seat. For example, a ball can be placed in a passageway, engaged with a downstream ball seat, and the radial protrusion radially extended into the passageway distally from the seat relative to the ball. A reverse movement of the ball is restricted by the active radial movement of the radial protrusion into the passageway. The control system can be used to control a variety of tools associated with the well. Without limitation, the tools can include crossover tools, sleeves, packers, safety valves, separators, gravel packers, perforating guns, decoupling tools, valves, and other tools know to those with ordinary skills in the art.

A system and method for providing a safety alert for a device is disclosed. The invention minimizes or prevents the affects of programming errors and / or provides enhanced alert information to a monitoring healthcare provider, wherein the alert information may relate to a potential safety concern. The method includes monitoring data transmitted from a device (e.g., infusion pump) and comparing the data to pre-established rules. When the data violates the rules, the system compiles an alert information packet, wherein the alert information packet includes information related to the device and the data. The system then transmits the alert information packet and / or an enhanced alert to multiple computer screens in a particular area.

Methods and devices for utilizing an electrically-actuated wireline insert safety valve (WLSV) and for delivering power to an electrically actuated WLSV via inductive charging and without the use of wired contact.

This type of product declare a multifunction safe electric pressure cooker comprises lid, outer body, warm-keeping Container, control panel, inner tank, sealant washer, heating plate under the inner tank, control device. The control device comprises the control circuit, pressure switch, temperature control device. The pressure switch and the temperature control device are under the warm-keeping Container. On the lid there are floating valve, pressure discharging valve, safety valve. Between the heating plate and the warm-keeping Container there is a spring device. Under the said heating plate there is a pole. The characteristic of it is that the control device comprises a sensor under the heating plate to sense whether has an inner tank in. Between the lid and the body sets a lid safety control switch that connected to the control circuit. Using the said structure of the electric pressure cooker, it can be more convenience, durable, and can fry and saute food, and has multi-protect devices such as open-and-close-lid-safety-control.

A safety valve control system may include a remotely operable control assembly, a first transducer, a valve assembly, and a compressor assembly in communication with the control assembly. The control assembly is operable to actuate the pump and valve assemblies to supply fluid to actuate the safety valve into open and closed positions, in response to one or more signals received from the first transducer. A method of operation may include maintaining the safety valve in an open or closed position while sensing a physical property with the control system; communicating a signal corresponding to the sensed physical property to the control system; and automatically closing or opening the safety valve in response to a comparison of the sensed physical property to a pre-set condition.

A subsurface safety valve has a closure sleeve or rod mounted below the closure mechanism. Control signal pushes the sleeve up (uphole) or down (downhole), whichever is applicable, which causes the closure element to rotate (or slide, or otherwise translate) to its open position. A loss of control signal allows the closure spring to push the sleeve or rod downhole (or uphole, whichever is appropriate). This movement causes the closure element to be driven to its closed position against the seat.

A shaped charge includes a charge case; a liner; an explosive retained between the charge case and the liner; and a primer core disposed in a hole in the charge case and in contact with the explosive, wherein at least one of the case, the liner, the primer core, and the explosive comprising a material soluble in a selected fluid. A perforation system includes a perforation gun, comprising a gun housing that includes a safety valve or a firing valve, wherein the safety valve or the firing valve comprises a material soluble in a selected fluid.

A multifunction safe electric pressure cooker includes a lid, an outer body, a warming container, a control panel, an inner tank, a sealant washer, a heating plate under the inner tank, and a control device. The control device comprises a control circuit, a pressure switch, and a temperature control device. The lid has a floating valve, a pressure discharging valve, and a safety valve. Between the heating plate and the warming container there is a spring device. Under the heating plate is a pole. The control device employs a sensor to determine whether the inner tank is placed in the cooker. Between the lid and the body sets a lid safety control switch that connected to the control circuit. The electric pressure cooker is more convenient and durable, can fry and sauté food, and includes multiple safety devices.

A control device for regulating delivery of fuel and an associated method of use is disclosed. The control device includes an inlet, an electromagnetic safety valve, having a thermocouple connection, a control valve, wherein the electromagnetic safety valve selectively allows fuel to flow from the inlet to the control valve through the electromagnetic safety valve when the thermocouple connection is heated, an actuator valve, a main valve having a pressure responsive device, having a first side and a second side and including an outlet chamber, a regulator valve having a sensing port and an outlet. There is an adjustment mechanism associated with the control valve that can also direct fuel into a pilot assembly.

The invention discloses a rotating operation type pressure cooker with a single handle. The rotating operation type pressure cooker comprises a pot body, pot lugs, a pot cover, a movable pressure ring, a panel, a right bracket, a left bracket and a rotating handle, wherein the pot lugs are arranged on the pot body, the movable pressure ring is fixed on the pot cover, the right bracket and the left bracket are arranged on the panel, the rotating handle is arranged on the right bracket and the left bracket, the pressure ring can be opened and closed by rotating the rotating handle, a pressure sealing ring is arranged at the inner part of the pot cover, and is used for realizing the sealing between the pot cover and the pot body, and an adjusting valve and a safety pressure valve are also arranged on the pressure cooker. When the rotating operation type pressure cooker is adopted, air can be released to pressurize the adjusting valve or to return the adjusting valve to zero by rotating the rotating handle of the pot cover by a hand in a clockwise or counterclockwise manner when the pot cover is opened, the safety valve is lowered, and the pressure ring is expanded, so that the pot cover can be opened or closed. Therefore, both the handle and an operating handle of a locking mechanism serve as an operating object; and the rotating operation type pressure cooker is simple and firm in structure.

A pressure fryer is provided including a cooking container having a pressure vent which is connected to a high pressure cylinder filled with carbon dioxide. An electromagnetic valve and a check valve are provided on the connecting tube between the pressure vent and the high pressure cylinder. A lid includes a safety valve and a pressure sensor. A controller opens and closes the safety valve and the pressure for the electromagnetic valve for supplying carbon dioxide into the cooking container based on the pressure therein which is obtained from the pressure sensor, such that the pressure in the cooking container can be maintained within a predetermined value.

The invention is a mine vertical pump being as a self-explosion-proof sand-discharging submersible pump. A safety valve with the one-way discharge hole is disposed in the cavity of the motor chamber or in the mechanical sealed outer oil chamber of the axle hole. It's better for the safety valve to have a sheath. At one end of the safety valve a sleeve with the explosion-proof assembly can be put.

A valve assembly for vascular access, comprising a body defining a lumen adapted for flowing blood, the body including a luer housing for connection with a first blood conduit and a barb housing for connection with a second blood conduit and a plurality of slitted membranes disposed within the body portion, each of the slitted membranes generating a partial pressure drop for flow therethrough, each of the partial pressure drops being smaller than a total pressure drop for flow through the body portion.

A pouch type secondary battery has a safety vent which prevents explosion and fire by removing a sealing mechanism of a pouch casing when the internal temperature increases due to overcharging, overdischarging or over-heating, and which exhausts internal gas before explosion and fire of the battery when the internal gas pressure excessively increases due to overcharging, overdischarging or internal short-circuit. The pouch type secondary battery includes an electrode assembly having positive and negative electrode plates with a separator interposed therebetween, and positive and negative electrode terminals extending from the positive and negative electrode plates, respectively, a pouch casing having a space in which the electrode assembly is housed to be sealed, a seal portion provided at the periphery of the space, and at least one of the positive and negative electrode terminals exposed to the seal portion, and at least one opening member disposed at the seal portion and made of a resin material having a lower melting point than a melting point of the seal portion of the pouch casing.

A safety valve control system may include a remotely operable control assembly; a first transducer, a valve assembly, and a pump assembly in communication with the control assembly; and a fluid reservoir in communication with the valve and pump assemblies and a safety valve. The control assembly is operable to actuate the pump and valve assemblies to supply and return fluid from the fluid reservoir to actuate the safety valve into open and closed positions, in response to one or more signals received from the first transducer. A method of operation may include maintaining the safety valve in an open position while sensing a physical property with the control system; communicating a signal corresponding to the sensed physical property to the control system; and automatically closing the safety valve in response to a comparison of the sensed physical property to a pre-set condition.

Disclosed is a cage for breeding laboratory animals. The laboratory animal breeding cage can detachably couple a lid to a body of the cage in a simple manner. Further, by virtue of a double filter mounted in the lid, the laboratory animals can be bred under both positive and negative pressure. Furthermore, by virtue of a double safety valve, the inside and the outside of the cage can be doubly air-blocked. The cage can be conveniently washed an managed, the cause of failure is eliminated and a life span of the cage is lengthened, and the efficiency in breeding and controlling the laboratory animals are enhanced.

An air compressor includes a cylinder housing having a passage formed in one end, a piston slidably received in the cylinder housing and moved relative to the cylinder housing in a reciprocating action to generate a pressurized air out through the passage of the cylinder housing. The cylinder housing includes an outlet tube having a bore communicating with the passage and the chamber of the cylinder housing, and having two or more ducts for readily coupling to and for supplying the pressurized air to the nozzle, the pressure gauge, the safety valve, or the other devices.

Land transportation vehicles using pneumatic tires loose air over time, including tractor trailers, private vehicles, race cars and other vehicle classifications. Tire pressure is important, but only a small number of attendants are concerned. Our invention is an automatic device which supplies air to tractor trailer tires using an onboard air supply. This air, supplied to the rotary air chamber system can be adjusted to a desired tire air pressure by the individual driver to suitable levels of load weights, climates, travel speed and terrain. Rotating tires at high speeds build up friction raising tire pressure to dangerous levels. This will be corrected by built in relief valves. To maintain and verify tire pressures each tire is protected by check valves and visible pressure gauges. The rotary air chamber automates, corrects continuously the neglect of proper tire maintenance, adds road safety for users and public alike.

The invention discloses a low-pressure pot cover which comprises a cover body and a cover bead, wherein an air outlet valve assembly and a safety valve assembly are further arranged on the cover body, and are respectively located on the left and right sides of the cover bead on the cover body; the cover body comprises an upper cover plate, a lower cover plate and locking racks for locking the pot cover on a pot body; the locking racks are located between the upper cover plate and the lower cover plate and can slide left and right; the cover bead is mounted at the middle part of the upper cover plate; the cover bead comprises a lower cover bead body, an upper cover bead body, a cover bead gear and a cover bead rack; the right end of the transverse part of the left locking rack and the left end of the transverse part of the right locking rack are respectively connected with the bottom of the upper cover plate through reset springs; and the rack part of the right locking rack and the rack part of the left locking rack are respectively located on the front and rear sides of the cover bead gear and are meshed with the lower part of the cover bead gear. The invention provides the low-pressure pot cover which is convenient to use, high in air discharging speed and safe.

The invention relates to a stainless steel pressure cooker capable of being heated quickly and uniformly, which is characterized by comprising a cooker cover and a cooker body, wherein the cooker cover is fixed on a cooker cover opening arm by a connecting shaft and a rotating handle; one end of the cooker cover opening arm is connected to the cooker body by an opening arm hinge with a torsional spring, an elastic lock hook and a button are arranged at the other end of the cooker cover opening arm, and a hook base matched with the lock hook is arranged on the cooker body; a pressure limiting valve, an interlocking floating body, a safety valve and an air-release valve are arranged on the cooker cover, and an interlocking hole is formed on the cooker cover opening arm corresponding to the interlocking floating body, and an anti-clogging hood is arranged on the lower part of the cooker cover corresponding to the safety valve and the air-release valve; and a seal ring is formed at the joint of the cooker cover and the cooker body, and is formed on the outer edge of the cooker cover by an installation rack. The stainless steel pressure cooker is staple food processing equipment which is applicative and has the advantages of high efficiency, energy conservation, sanitation and the like for highland armed forces and army service stations, and is also suitable for large-scale food units such as dining halls, restaurants and the like in highland regions.

A system for capturing displaced fluid or pumping fluid through tubulars being run into or out of the wellbore is described. Embodiments are supported by a traveling block and top drive unit with telescoping features to rapidly seal over a tubular to connect the tubular to a mud system. Alternative sealing arrangements for sealing inside the tubular connection are also disclosed. These alternate sealing arrangements also provide flow areas larger than the tubular body since no portion of these arrangements enter the tubular body. All of the sealing arrangements provide a biased area whereby any internal pressure in the invention forces the seals into more intimate contact with their mating seal surfaces. A mudsaver valve having a large flow capacity is described to keep fluid from spilling when the apparatus is removed from the tubular. This mudsaver valve also provides for pumping of fluid into the tubular or flow of fluid from the tubular to the mud system prior to removing the apparatus from the tubular. In these embodiments, the apparatus can be placed in threaded sealing contact with the tubular and can incorporate a safety valve that can be manually closed in the event of a well kick. In another embodiment, a singular control input accomplishes operation of the apparatus to extend or retract the telescoping feature. Also illustrated is a drain valve that provides a method of completely removing all fluid pressure from within the apparatus prior to removing the apparatus from the tubular. The drain system also provides a means of disposing of the excess fluid away from the rig floor where spillage is a danger to the personnel or environment. The drain system can also be connected to a scavenger system that is intended as a vacuum system for removal of spillage. Connection to this system eliminates all possible spillage and completely removes fluids from the tubular handling area.

A subsurface safety valve comprises a tubular body adapted for placement within a wellbore and defining a fluid passageway. A valve closure member, such as a flapper valve, is carried by the tubular body and movable through a closure path between positions opening and closing the fluid passageway. An actuator, such as a biasing spring, urges the valve closure member to its closing position. A flow tube is axially-movable within the tubular body between a first position preventing the actuator from urging the valve closure member to its closing position and a second position permitting the actuator to urge the valve closure member to its closing position. A latch assembly is provided for preventing movement of the valve closure member from its opening position to its closing position until the flow tube has been urged clear of the closure path. Aspects of the safety valve are employed by a related method and system.

A hydraulic circuit for the control of a double clutch transmission which has two transmission groups, each with an isolating clutch and with a plurality of shift clutches for the engagement and disengagement of gear steps, the hydraulic circuit having for each transmission group a specific hydraulic branch connected to a pump in each case via a safety valve, and each hydraulic branch having in each case a clutch control valve for controlling the assigned isolating clutch and at least one shift control valve for controlling the assigned shift clutches. Here, the safety valves are designed in each case as proportional pressure regulating valves.

Disclosed is a pressure cooker having a built-in cover. A lower handle is installed on the pressure cooker body. An upper handle, an exhaust nozzle and a safety valve are installed on the cover. The exhaust nozzle is equipped with a valve cap matched with the exhaust nozzle. An upper port of the pressure cooker body is provided with a flange bending inward; and a pressure cooker mouth in an elliptical shape is formed by the flange. The cover is in an elliptical shape; and the edge of the cover is provided with a check ring that is matched with the flange. The external lateral side of the check ring is provided with a sealing gasket. A protruded bearing platform is arranged in the position of the lower handle close to the pressure cooker body; and the other end of the upper handle extending outside the cover is provided with a hanging ring. After putting the cover into the pressure cooker mouth, a long axis of the cover is aligned with a long axis of the pressure cooker mouth, thereby allowing the sealing gasket on the check ring to press against the inner side of the flange, and allowing the upper handle to press against the bearing platform; and then, the upper handle is pressed downward, and the hanging ring is hung on the lower handle, thereby sealing the pressure cooker mouth by the cover. When the cover needs to be opened, the upper handle is pressed upward, and the hanging ring is released from the handle, thereby the cover can be taken out.

A lithium ion secondary battery is so designed as to facilitate the insertion of the top insulator plate and to secure the fixation of the electrode group. This structure can reduce the probability of the electrode group moving around in the battery case to be damaged when the battery is dropped or shocked, thereby maintaining high safety standards even when a high pressure is applied from outside the battery. In a lithium ion secondary battery provided with a safety valve and composed of an electrode group which consists of a band-shaped positive electrode plate and a band-shaped negative electrode plate wound together with a separator disposed therebetween and which is housed in a cylindrical metal battery case with a bottom, together with a top insulator plate, the top insulator plate is designed to be elastic and is provided in its center with a through hole into which a center core member is press-fitted.

A safety device for preventing overpressure for a pressure cooker comprising a cooking pan (1) and a lid (10) provided with a handle connected to the lid by a leaf spring (21). The safety device comprises at least a safety valve (30) is mounted on the leaf spring and on the lid, characterized in that one or a plurality of safety valves are mounted in a sealed manner in a drilling in the leaf spring so as to be interposed between the leaf spring and the lid and resiliently supported against the lid and obscure the evacuation hole in the lid.