3634 results about "Pressure switch" patented technology

An implantable intraocular pressure sensor device for detecting excessive intraocular pressure above a predetermined threshold pressure is disclosed. The device includes a pressure switch that is sized and configured to be placed in an eye, wherein said pressure switch is activated when the intraocular pressure is higher than the predetermined threshold pressure. The device is optically powered and transmits data wirelessly using optical energy. In one embodiment, the pressure sensor device is a micro electromechanical system.

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 chest piece for a stethoscope has a housing with a cavity. The cavity has a cavity surface which is paraboloid in shape, having an apex, an axis, and a focal point. The cavity terminates at the apex and an opening, and the focal point resides in the cavity. A transducer is positioned at the focal point. The parabolic shape of the cavity surface acts to reflect sound waves transmitted normal to the opening to the transducer, while reflecting other sound waves. A mechanical wave guide with a series of parallel passages preferably extends across the opening. Preferably, a membrane with a convex surface covers the opening. The cavity is preferably filled with a liquid or gel having physical characteristics similar to human flesh. To reduce noise from motion of the chest piece across the skin, the stethoscope can be activated by a pressure switch responsive to fluid pressure inside the cavity.

A warning device configured for removable mounting in combination with a high pressure gas cylinder and a regulator used to regulate the high pressure gas supplied by the cylinder. The device compression mounts between the regulator and tank outlet on conventional portable oxygen and gas supply systems using a specially configured manifold. The device features one or a combination of alarms, from a group including audio, visual, electronic, and remotely transmitted alarms. These alarms are activated by a pressure switch monitoring the remaining supply in the gas cylinder through a conduit the manifold. The alarm signal from the device alerts the user, or a third party monitoring the user, of current tank pressure or will sound an alarm when remaining high pressure gas inside the gas cylinder drops below a predetermined level.

The invention relates to the technical field of electric pressure cookers, in particular to an electromagnetic heating electric pressure cooker. The electromagnetic heating electric pressure cooker structurally comprises a shell, an inner pot and an outer pot, wherein a pressure switch and a control device are arranged at the bottom of the outer pot; an annular heating disk component and a sensor component are arranged between the inner pot and the outer pot; a through hole is formed in the middle of the heating disk component; the sensor component is mounted in the through hole; the heating disk component comprises an electromagnetic heating outer disk, a radiating fan, an electromagnetic heating wire coil, an electromagnetic coil, a plurality of magnetic strips, an electromagnetic heating disk cover and an anti-magnetic disk; the sensor component comprises a fixed frame, a spring arranged on the fixed frame in a sleeving manner, a sensor cap and a thermistor; and the thermistor is electrically connected with the control device. Compared with the prior art, the electric pressure cooker has the advantages of simple structure, high radiating performance, capacity of precisely controlling pressure and temperature and long service life, truly realizes application of an electromagnetic heating technology to the electric pressure cooker, and has a wide market prospect.

The present invention provides a pressure control method and apparatus of an electric pressure cooker, and the electric pressure cooker. The method comprises a detection step that a temperature wrap disposed at the bottom of the electric pressure cooker detects temperature of the electric pressure cooker; and a heating device control step of controlling on and off of a heating device according to the temperature detected by the temperature wrap when a pressure switch is off, specifically, opening the heating device to heat when the temperature is less than or equal to first temperature, and closing the heating device and stopping heating when the temperature is great than or equal to second temperature, wherein the second temperature is greater than the first temperature, the first temperature is great than or equal to 100 DEG C and less than or equal to 108 DEG C, and the second temperature is great than or equal to 102 DEG C and less than or equal to 110 DEG C. According to the technical scheme, cycle control of the pressure in a certain range is achieved through a single pressure switch without internal temperature-sensitive monitoring, and use functions of the electric pressure cooker are improved.

The invention discloses an electric pressure cooker control method, a control device and an electric pressure cooker. The control method comprises the following steps: when a pressure switch of the electric pressure cooker trips, acquiring and recording current temperature of the bottom of the electric pressure cooker as a first temperature; controlling the electric pressure cooker to conduct heating work, and heating the temperature of the bottom of the electric pressure cooker to a second temperature and then stopping heating; detecting whether the temperature of the bottom of the electric pressure cooker drops to a third temperature or not, if so, continuing to heat to the second temperature; and if not, continuing to stop heating. Since the temperature of the bottom of the electric pressure cooker circulates between the second temperature and the third temperature, over-pressure exhaust on the electric pressure cooker is achieved in a circulating mode, so that boiling rice cooking is conducted and the advantages of cooking rice with pressure are still reserved. In addition, the entire control process is achieved by detecting the temperature of the bottom of the electric pressure cooker without setting an electrical element on a cooker cover of the electric pressure cooker so that the cooker cover of the electric pressure cooker can be detached and washed and the overall cost of the electric pressure cooker can be reduced.

The invention discloses an electric pressure cooker, as well as a cooking control method and cooking control device thereof. The method comprises the following steps: detecting upper cover temperatureof the electric pressure cooker in real time so as to generate an upper cover temperature sampled value; acquiring the states of a pressure switch in the electric pressure cooker, wherein the pressure switch gets connected or disconnected in accordance with pressure in the electric pressure cooker; controlling the electric pressure cooker to conduct heating by a first power adjusting ratio; and sampling the upper cover temperature sampled value when the pressure switch is disconnected to serve as a standard sampled value, and controlling the electric pressure cooker to conduct heating by a second power adjusting ratio in accordance with the standard sampled value; therefore cooking processes of the electric pressure cooker can be controlled in accordance with the states of the pressure switch, so that the product (the electric pressure cooker) can adapt to working environments of different altitudes, such problems as spillover and the like of the electric pressure cooker caused by pressing deviation can be prevented, a cooking effect can be improved, product competitiveness can be improved and user experience can be improved.

The present invention relates to straddle packer systems and methods of using them for downhole isolation of zones for fracturing treatment. More specifically, the system includes upper and lower seal systems having resiliently flexible sealing elements hydraulically and operatively connected to one another which are responsive to an increase in hydraulic pressure for setting the sealing elements at a first hydraulic pressure threshold. Additionally, the system includes a control system hydraulically and operatively connected between the upper and lower packer systems which is responsive to an increase in hydraulic pressure at a second hydraulic pressure threshold higher for activating a pressure switch system within the control system for opening at least one frac valve in the control system.

There is an accurate pressure-controlling electric rice cooker, which contains an inner pot inside pot body crust, and the inner pot is connected with electric plate, and there is a resilient seal ring between the inner pot and pot cover. Between the crust and the inner pot there is a middle pot; between the crust and the middle pot there is a heat-insulating layer. The electric rice cooker has a pressure switch, which contains an air duct or air channel connected with inner pot chamber. The other end of the air duct or air channel is communicated with a pressure membrane case, in which there are movable membranes that are joined with push rod. On the other side of the push rod there is a movable contact spring, which connects with an unmovable contact spring, and both the two contact springs couple with main controlling electric of electric rice cooker separately. This invention has simple and reasonable structure, its pressure controlling is accurate, safety degree is high, and after cooking it can exhaust quickly and safely, discharge pressure in blocked style, and its heat insulation effect is good, heat conductivity is high and is energy saving.

The invention discloses a pressure regulating device which comprises a compass assembly and a rotating disc matched with a regulating screw of a pressure switch. The bottom of the rotating disc is provided with a screw rod penetrating through a dial plate of the compass assembly. The rotating disc is provided with a rotating disc pointer matched with a pointer of the compass assembly. The rotating disc, the screw rod and the compass pointer are in coaxial linkage. A plurality of pressure regulating scale marks are evenly distributed in the circumferential direction of the rotating disc. In the assembling and using process, the pointer of the rotating disc is aligned with the pointer of the compass assembly, then, a worker controls the rotating disc through the regulating screw to rotate and drives the screw rod and the pointer of the rotating disc to rotate coaxially, the current pressure regulating value can be visually determined through the pressure regulating scale marks, the working pressure limiting value of an electric pressure cooker is precisely controlled to meet the corresponding requirement for products, and then the pressure regulating operation of the electric pressure cooker is precisely and efficiently completed. The invention further discloses the electric pressure cooker applying the pressure regulating device.

An electric cooker is configured to cook in a pressure state and a non-pressure state of an inner pot, thereby improving the cooking quality and convenience of use. The electric cooker includes a main body configured to accommodate an inner pot; a lid coupled to an upper portion of the main body and having a handle portion provided at one side of an upper portion of the lid to interwork with an inner pot locking unit configured to lock the inner pot; a pressure switching unit arranged to pass through the lid and configured to switch or maintain an opened or closed state to discharge internal steam from the inner pot according to a rotation of the handle portion; and a pressure-responsive operating unit which is selectively opened or closed according to a pressure inside the inner pot in a pressure cooking mode in which the pressure switching unit is closed.

A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide four forward speed ranges, a neutral condition, an electric low speed mode, an electrically variable low and high speed mode, and two electrical power off drive home modes. The electro-hydraulic control system includes a multiplexed pressure switch system. The multiplexed pressure switch system of the present invention allows position detection of five torque transmitting mechanism control valves through the use of only four pressure switches.

The embodiment of the invention discloses a method of a protection circuit and an electric pressure cooker and a protection pressure switch; wherein the protection circuit comprises a pressure switchconnected with a power supply, an electric hot tray connected with the pressure switch and a heating module connected with the electric hot tray and used for heating the electric hot tray; the protection circuit further comprises a switch protection module, the switch protection module is connected in parallel with the pressure switch, and used for absorbing the energy flowing through the pressureswitch when the connected state of the pressure switch is changed to the off-state. According to the method, the arcing phenomenon generated by the oversize pressure between the two contactors of thepressure switch can be avoided, and the service life of the pressure switch is prolonged.

A pressure control method of an electronic pressure cooker includes using a temperature sensor to acquire change of the temperature of the cooker according to a relation between the temperature of the cooker and the pressure; converting the change of the temperature into the change of the pressure; and completing control of the pressure of the cooker through a circuit. An electronic temperature sensor is used to replace a mechanical pressure switch, the regulation control is accurate, and the failure rate is low.

A capacitive sensor element for use with a patient monitoring system and a method for manufacturing and dispensing such sensor elements for use. Sensor elements include a flat, flexible, substrate layer that is manufactured into a roll that also includes at least two longitudinal conductive elements printed onto one side of the substrate layer material. Disclosed also is an integrated interconnect cable component for allowing the operation of dielectric shift sensor elements with a variety of control monitors associated with pressure switch based patient alarm systems. The interconnect cable component may be used for connecting a dielectric shift sensing mat with any of a variety of different pressure switch based control unit modules used with patient occupancy alarm systems. The interconnect includes an integrated driver, sensor, comparator, calibration, logic circuit; a relay activation circuit; and power supply. Various embodiments in different sleeping (bed) and sitting (chair) environments are described.

An improved brush cutter having an upper feed control member with stop, forward, neutral, and reverse positions also has a lower feed stop member with selectable sensitivity. Another aspect of the invention is to predict the feed roller shutoff point according to the rate of engine deceleration. According to another aspect, when the feed rollers stop feeding material into the cutters, to overcome drag on the cutters, a controller stops the feed rollers and then reverses them for a short time, and then reverses the rollers again if the problem is still present. To prevent jamming, a pressure switch senses when oil in a hydraulic motor system for rotating the feed rollers is too high and the controller momentarily reverses the feed rollers and then causes them to go forward, a cycle which can occur several times until the feed rollers are no longer stalled. By another aspect of the invention, the controller senses characteristics of the brush cutter and chooses an operating system based on the characteristics sensed. The controller can also sense if the brush chipper has not been used for a predetermined period of time and automatically reduce the idle speed of the engine until the brush chipper is used again, and then automatically return the engine to a normal idle speed before the feed rollers will pull brush into the brush chipper.

The invention discloses an electric pressure cooker with adjustable pressure limiting value. The electric pressure cooker comprises a cooker seat, a cooker body and a cooker cover, wherein the cookerseat, the cooker body and the cooker cover are matched in sequence from top to bottom and are fixedly connected; a connecting block is arranged at the upper part of the cooker cover; the connecting block and the cooker cover are fixedly connected through a bolt and a nut; the connecting block and the cooker body are connected through a foldable connecting part; a pressure limiting valve is arranged in the connecting block; a lifting handle is arranged at one side of the pressure limiting valve; one end of the lifting handle and one end of the pressure limiting valve are embedded into the cooker body respectively and are fixedly connected through a screw and a thread. According to the electric pressure cooker disclosed by the invention, a compression spring is matched with a pressure switchto use; when a heating disc sinks under the action of pressure, the heating disc moves to trigger the pressure switch to move, so as to control the pressure; a temperature sensor, which is additionally arranged, can be used for converting a measured temperature signal to an electric signal to control whether the heating disc is continually heated to control the pressure or not, so that the pressure limiting value is convenient to adjust.

The invention discloses a pressure cooker, a pressure switch and a pressure regulation method of the pressure switch. The pressure switch comprises a switch body (1) and a screw (3) for regulating pressure and further comprises a graduated disc (2) arranged on the switch body (1), wherein a threaded hole is formed in the center of the graduated disc (2), and the screw (3) is matched with the threaded hole. A pointer (4) is arranged at the end, away from the switch body (1), of the screw (3). The screw (3) is provided with a thread section exposed outside the threaded hole. A pressure switch the same as the pressure switch can be conveniently adjusted to be in a same state only by completing debugging of one pressure switch, repeated debugging conducted by a technician on the same pressure switch is avoided, and the production efficiency is effectively improved.

The present invention relates to a refillable keg assembly for use in dispensing beverages, in particular beer. The keg assembly comprises an outer shell, and a collapsible container for holding the beverage, positionable within the outer shell. A sealed cavity is defined between the outer shell and the collapsible container. A beverage outlet from the collapsible container enables beer to be dispensed from the keg assembly, and a gas valve allows gas to enter the cavity. The pressure in the container is maintained above atmospheric pressure, and when dispensing the beverage, pressure in the cavity collapses the collapsible container and forces the beverage out through the beverage outlet. A gas compressor is connected to the gas valve, and is activated by a pressure switch to maintain the pressure within the cavity. To refill the keg assembly, the collapsible container can be replaced, and a new collapsible container filled whilst within the outer shell.

A user input interface for an electronic device, comprising a keyboard with a plurality of keys arranged in proximity to each other. Each key comprises an input detector sensitive to detect user activation, such as a pressure switch. A sensor in each key is configured to generate a signal responsive to a sensed level of user-induced influence on the key, such as a degree of coverage of or contact with the key. A control unit is then configured to compare the generated signals for a number of keys simultaneously activated by a user, in order to determine which one of the simultaneously activated is intended to be input by the user.

A system and method for improving cooling of a heat-generating component in a closed-loop cooling system is shown. The system comprises a venturi having a throat which is coupled to an expansion tank that is exposed to atmospheric pressure in the embodiment being described. The venturi, when used with a pressure switch, can operate to determine a flow rate which can be used to generate a signal which in turn is used to activate or deactivate one or more of the components, such as the heat-generating component, in the system. Also shown is another embodiment wherein a circular venturi is provided to permit a venturi passageway to be defined about an axis of the pump in order to shorten the overall length of the pump and venturi combination.

A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide four forward speed ranges, a neutral condition, an electric low speed mode, an electrically variable low and high speed mode, and two electrical power off drive home modes. The electro-hydraulic control system includes a multiplexed pressure switch system. The multiplexed pressure switch system of the present invention allows position detection of five torque transmitting mechanism control valves through the use of only four pressure switches.

An automatic jacking system for automotive vehicles includes four sculpe jacks hingably mounted to the frame of the vehicle adjacent the vehicle wheels and hydraulic and electrical lines that communicate with the jacks for operating and controlling the jacks. The hydraulic lines couple the jacks to a fluid reservoir and pump of the hydraulic system, and the electrical lines extend from individual solenoids mounted on each jack to a control panel wherein an in-line fuse is disposed between the solenoids and the control panel switches for that jack and wheel. The control panel also includes a pressure switch for locking each jack in place, and each jack has an associated leak detection sensor that communicates with the control panel switch associated with that jack so that detection of a leak will cause the control panel switch for that jack to blink on and off thereby alerting the individual of a dangerous condition.

The invention aims at providing an electric continuous mouse trap which is good in mouse trapping effect. The electric continuous mouse trap comprises a support, a mouse trapping box, an anti-return channel and a mouse storage box. The electric continuous mouse trap is characterized by further comprising a box rising switch, a mouse trapping pressure switch plate, a limiting travel switch, a motor and a return plate, wherein the mouse trapping box can be lifted away from the ground after the box rising switch or the return plate is triggered, and hooked to the support by using an elastic snap spring; the elastic snap ring is released after the mouse trapping pressure switch plate is triggered so that the mouse trapping box falls freely to trap mice in the mouse trapping box, and when the mice escape into the anti-return channel from the mouse trapping box, the box rising switch can be triggered so that the mouse trapping box is lifted, and therefore, continuous mouse trapping is realized. The electric continuous mouse trap is completely different from the traditional method of arranging the mouse trapping box on the ground, and in this way, the alert mind of the mice is relieved; as a result, the electric continuous mouse trap is good in mouse attracting effect and can be used continuously, and therefore, excellent mouse trapping effect is achieved.

A steam generator boiler for generating steam is connected to a supply conduit for supplying water to the boiler with a supply valve for controlling the supply of water through the supply conduit. A heater supplies heat to the boiler for generating steam with a discharge conduit for discharging excess impure water therefrom. A metering device is operatively connected to the supply conduit for regulating the flow of water to the boiler by calculating the amount of water required based on wattage or BTU's generated by the heater. A pressure switch or thermostat is provided for operating the boiler and the supply valve on the supply conduit for supplying water to the boiler to permit water to be added every time the heater is energized. In addition, a heat exchanger is provided for receiving discharged heated water from the steam generator and preheating water supplied to the steam generator.