547 results about "Pressure units" patented technology

A pressure sensing catheter having a proximal end and a distal end. The proximate end includes one or more leur fittings contiguous with one or more lumens disposed within the catheter, a connector coupled to a signal lead which spans the length of the pressure sensing catheter and a pressure transducer coupled at about a distal end of the pressure sensing catheter. One or more apertures are provided at about the distal end of the pressure sensing catheter to allow infusion of fluids and/or withdrawal of fluid samples contemporaneous with pressure monitoring within a blood vessel. Signals sent from the pressure transducer are converted into vascular pressure units by an electronic monitor coupled to the signal lead connector.

The invention discloses an adsorption-desorption-seepage experiment system for loaded coal containing gas under the condition of varying temperatures. The experiment system comprises a tank body used for holding constant-temperature water bath. A triaxial pressure chamber is arranged in the tank body; a coal chamber is arranged in the triaxial pressure chamber; a coal sample is installed in the coal chamber; a foil gauge is adhered onto the coal sample and is connected with a dynamic strain meter; one end of the coal chamber is provided with an opening, and a pressure head is mounted in the opening and connected with a pressure unit; the coal chamber is communicated with a vacuum pipeline and a high pressure gas-transmission pipeline; and a confining pressure pipeline used for conveying hydraulic oil is communicated with a cavity between the coal chamber and the triaxial pressure chamber. The adsorption-desorption-seepage experiment system for loaded coal containing gas under the condition of varying temperatures in the invention has the advantages of a simple structure, convenient operation, reasonable design, high experiment precision and a low price.

The invention relates to a high-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method. The device comprises a well drilling liquid pressure control unit, a liquid storage unit, a stratum model, a plugging liquid temperature control unit and a confining pressure unit. The stratum model is provided with a crack simulating stratum forms, and a pressure sensor is distributed on the crack. The pressure and the temperature of plugging liquid entering the stratum model and pressure applied to the stratum model are controlled, pressure values of different depths of the crack are measured through the pressure sensor, and flow of the plugging liquid is measured according to a weighing method. The high-temperature and high-pressure plugging/sticking preventing simulation evaluation device and method can evaluate the plugging effect of different plugging materials and plugging slurry under the same condition and provide scientific research methods for the research of plugging well leakage and extrusion theories, the preparation of plugging agents which are strong in staying performance, forming of process technologies of preventing the plugging agents from sticking backwards, the building of laboratory plugging simulation evaluation method standards and the like.

The fixing device includes a fixing unit, a pressure unit that comes into pressure-contact with the fixing unit to form a nip, and control guides. The fixing unit includes a heat roller. The pressure unit includes a pressure belt, and a pressure pad. The pressure pad is attached to a holder and pressed by a spring through a stay, thereby bringing the pressure belt into pressure-contact with the heat roller. The control guides on both sides of the pressure pad control deformation of the pressure pad in an axial direction of the heat roller to make a nip shape uniform.

The present invention relates to a device capable of utilizing the outside pressure to collect compressed air. The device comprises a pressure unit, a driver, an air cylinder, a pressure storage unit and a resetter; wherein, the pressure unit, which is mounted on the upper surface of a foundation pit arranged on a road surface, comprises a pressure plate, one end of which is hinged with the foundation pit and the other end of which is a free end; the driver, which is mounted on the lower surface of the pressure plate, comprises a rack, which is movably connected with the pressure plate and engaged with a gear; a crankshaft is mounted on the gear; a piston rod of the air cylinder is hinged with the crankshaft; the air cylinder is communicated with the pressure storage unit, which is provided with a pressure meter; and the resetter is mounted on the lower surface of the free end of the pressure plate. The device does not generate any pollution and can recover the energy wasted by a heavy object to the max, thus achieving the purpose of turning the waste into a valuable. Moreover, the device also has the advantages of simple structure, reasonable design, little investment and cost, high conversion efficiency and easy promotion.

A fusing device includes a pressure unit, a belt unit to rotate in outer contact with the pressure unit, a nip forming unit to form a nip over a contact portion between the pressure unit and the belt unit, a heating unit to heat the nip forming unit and the belt unit, and a support unit to press and support the nip forming unit constantly and having a plurality of heat transmission portions defined in a parallelogrammic shape of an oblique direction with respect to a traveling direction of the belt unit.

A mobile phone including a perfume spraying apparatus, the perfume spraying apparatus including a perfume storage unit capable of storing at least one perfume type and a perfume spraying unit, wherein the perfume spraying unit includes a perfume chamber coupled to the perfume storage unit by a perfume flow path, a pressure unit to pressurize the perfume chamber, and a nozzle to spray perfume outside the mobile phone. The mobile phone may include a control unit to instruct the perfume spraying apparatus to spray perfume when a button of the mobile phone is pushed and/or when the mobile phone is called and may change a type or amount of perfume sprayed according to an increase or decrease in a user's voice volume, according to a caller, according to a user customization and/or according to a noise change in a user's surroundings.

A printed circuit board machining apparatus includes a spindle that holds a tool for machining a printed circuit board and a pressure unit for pressing the printed circuit board to a table in machining the printed circuit board. The pressure unit includes a pressure foot movable up an down along the spindle, a rotating member having a plurality of pressure pieces through which a through hole for passing the tool is formed and provided so as to select one among the plurality of pressure pieces, a motor for moving the rotating member, cylinders and electromagnetic valves for moving the pressure foot up and down and a control section for controlling the cylinders and electromagnetic valves. The control section rotates the motor so as to select the pressure piece and controls the cylinders and the electromagnetic valves to change force for pressing the printed circuit board.

During regenerative coordinate braking control, a target brake force is defined by eliminating influences of brake system component tolerances to achieve a comfortable brake feel and secure regenerative energy. A brake control system includes a master cylinder, wheel cylinders, a VDC brake fluid pressure unit and a motor controller. In response to a brake pedal operation by a driver, a brake pedal stroke position is detected at which a pressure in a master cylinder actually begins to be generated. A target deceleration characteristic is adjusted from a theoretical characteristic so that the target deceleration equals a maximum value of an add-on brake force (i.e., the regenerative brake gap) at the detected brake pedal stroke position.

This invention discloses a preparing method for a multifunction integrated sensor chip, which applies micro-mechanical electronic technology and IC micro-processing technology to process three sensing units sensing pressure, temperature and humidity on an area of 5mmx5mm tube core, the pressure unit based on the piezo-resistance effect is used to test the pressure variance of environment, the temperature unit is used to test the change of environment temperature based on the thermal resistance effect and the humidity unit based on the capacitance theory used to test the variance of the environment humidity.

An image forming apparatus includes a suction unit; a pressure unit configured to pressurize the inside of a supply channel extending from a liquid container to a recording head at a pressurizing position along the supply channel; an opening and closing unit configured to open and close the supply channel at a position downstream of the pressurizing position; and a control unit configured to cap a nozzle surface with a cap and suction ink from nozzles with the suction unit, to move the cap away from the nozzle surface after pressurizing the inside of the supply channel with the pressure unit to a pressure greater than or equal to atmospheric pressure, to wipe the nozzle surface with a wiping part after closing the supply channel with the opening and closing unit, and to open the supply channel with the opening and closing unit after wiping the nozzle surface.

The invention relates to the technical field of experimental devices, and discloses a gas-containing coal hydrofracture-induced dynamic damage simulation monitoring device and method. The device comprises a sealed cavity for containing a cubic coal sample, an acoustic emission monitoring unit, a confining pressure unit, a hydrofracture unit and a gas injection unit, wherein the confining pressure unit extends into the sealed cavity to apply confining pressure onto the cubic coal sample; the gas injection unit extends into the sealed cavity to inject gas into the cubic coal sample; the hydrofracture unit extends into the sealed cavity to perform hydrofracture on the cubic coal sample; and the acoustic emission monitoring unit extends into the sealed cavity to acquire an acoustic emission signal from the cubic coal sample. The device can be used for monitoring and analyzing gas-containing coal hydrofracture-induced dynamic damage with different gas pressure and different coal intensities under different pressure conditions. The device is simple in structure, simple in monitoring method and easy to operate.

An apparatus for inclining a roller on which a pressure belt is suspended to perform a deviation control of the pressure belt, which can well perform the deviation control of the pressure belt even when the pressure belt has been spaced apart from a fixing roller. A fixing device is provided with a pressure belt suspended on rollers, a deviation control device adjusting the deviation of the pressure belt, and a pressure unit bringing the pressure belt into pressure contact with a fixing roller to form a nip portion. The deviation control device is designed to be moved with the pressure unit.