3623 results about "Pressure switch" patented technology

A vertical fore grip for a firearm with an integrated pressure switch pocket. The vertical fore grip includes a body with internal storage cavity, a mount adapted to secure a firearm, a pocket for a pressure switch on the perimeter of the body, and a cap to secure a pressure switch and waterproof the internal storage cavity. The mount has a groove for a firearm rail, at least one locking bar, and a spring for engaging the locking bar to a firearm rail.

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 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.

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 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.

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.

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.

The invention discloses an air source low-temperature heat pump water heater, comprising a main machine, a thermal storage heat insulating water tank, a controller, a four-way valve, a jet enthalpy increasing compressor, a high-pressure switch, a sleeve condenser, a reservoir, a drying filter, an electromagnetic valve, an assistant thermal expansion valve, an economizer, a main expansion valve, afin evaporator, a gas-liquid separator, a low-pressure switch and a check valve. The D direction of the four-way valve is connected with a gas discharging pipe of the jet enthalpy increasing compressor through the high-pressure switch, the C direction is connected with a gas inlet of the sleeve condenser, the S direction is connected with a gas absorbing port of the jet enthalpy increasing compressor through the gas-liquid separator and the low-pressure switch, the E direction is connected with a gas outlet of the fin evaporator, an outlet of the sleeve condenser is divided into two paths after passing through the reservoir and the drying filter, the main path directly enters the economizer and then enters a liquid inlet of the fin evaporator through a main thermal expansion valve, the secondary path enters the economizer through a liquid path electromagnetic valve and the assistant thermal expansion valve, and then enters an assistant gas inlet of the jet enthalpy increasing compressor through the check valve. The invention can ensure the supply of hot water all day in every season in northern places.