46results about How to "Reliable pressure" patented technology

A balloon catheter having a micromanometer connected to the catheter and also a fluid-filled transducer system for adjusting micromanometer pressure measurements.

A cuff for a blood pressure monitor has an air bag inflated/deflated as the air comes in/out. The air bag has an inner wall portion located on the inner side in the fitted state of the cuff and an outer wall portion located outer than the inner wall portion, and a side wall portion connecting side end portions of the inner and outer wall portions and folded inwards in the deflated state of the air bag to form a gusset at each side end portion of the air bag. A bonded portion is provided at a region of the air bag in its winding direction around the living body, for reducing expansion of the gusset formed by the side wall portion. Thus, occurrence of lateral displacement of the cuff is prevented, and a highly reliable blood pressure monitor of high performance can be obtained.

The present invention discloses a whipstock assembly (100) for use in forming a lateral borehole from a parent wellbore. The whipstock assembly comprises a body (122) and a deflection member 120) above the body. The deflection member includes aconcave portion (111) for deflecting a milling bit during a milling operation. Disposed on a perforation plate (110) portion of the concave portion is a raised surface feature (116). The raised surface supports a milling bit above the perforation plate portion during a milling operation. This, in turn, substantially prevents frictional contact between the milling bits and the perforation plate portion during a milling operation. The present invention also provides a novel method for manufacturing a whipstock in which a cavity portion is formed behind the perforation plate by milling out the backside of the deflection member and then joining a second back cover member to the whipstock body to complete the assembly.

A cuff as a living body pressing apparatus provided for a blood pressure monitor as a living body information measuring apparatus includes an air bag and a curled elastic member wound annularly around an outer side of the air bag. The air bag has an engagement portion at each side end portion in the width direction. The engagement portion is folded along the end face of the curled elastic member toward the curled elastic member, and secured to the outer peripheral surface of the curled elastic member. With this configuration, it is possible to provide a living body pressing apparatus capable of preventing occurrence of lateral displacement, and a living body information measuring apparatus provided with the living body pressing apparatus.

The drive unit for a vehicle has an engine driving control element for driving a first motor on the basis of an engine driving signal, and driving a second motor so as to restrain a reaction force in a power distributing planetary gear due to the driving of the first motor in a state in which the stepped speed change gear connects the second motor and an output shaft by brakes. Further, the drive unit has an electrically operated oil pump for generating an operating oil pressure of the brakes, and also has a control section having an electrically operated oil pump operation control element for operating the electrically operated oil pump prior to the control of the engine driving control element on the basis of an engine starting signal outputted in a vehicle stopped state.

A hydraulic control device for an automatic transmission that includes a fail-safe function to establish a fail-safe traveling state where a predetermined shift speed is established, and a fail-safe stopping state where the primary pressure to all of the hydraulic servos is cut-off when a failure occurs. The hydraulic control device is able to switch between the fail-safe traveling state and the fail-safe stopping state even after a failure occurs, thereby enhancing a limp-mode function.

A noninvasive system and method of measuring vascular pressure waveforms in a living being includes a tonometric sensor device that reduces, or ideally, eliminates, distortion in the vascular pressure waveforms measured. The data from the vascular pressure waveforms are manipulated to determine cardiovascular conditions of a living being based on a comparison of measured augmentation index and/or pulse wave velocity values to typical values for healthy living beings of similar physiological characteristics.

In a cup seal, the hydraulic pressure in a first hydraulic chamber (6) causes a first seal portion (21e) of an outer lip portion (21c) to closely contact to a bottom wall (20a) of a recessed portion (20) and causes a second seal portion (21f) of a base portion (21a) to closely contact to a rear surface (20b) of the recessed portion (20). A double seal due to the first and second seal portions (21e) and (21f) reliably prevents the leakage of a brake fluid from the first hydraulic chamber (6). If the pressure becomes negative in the first hydraulic chamber (6), the tip portion of the outer lip portion (21c) deflects inward and the outer peripheral end of the base portion (21a) deflects forward. Therefore, the brake fluid in the reservoir flows into the first hydraulic chamber (6) through the gaps among the second and first seal portions (21f), (21e) and the wall surface of the recessed portion (20) to maintain fluid-feeding performance.

The present invention relates to a method and a device for controlling a vehicle brake system with active hydraulic brake force boosting. In this method, an active pressure-increasing unit and/or a pressure modulation unit is actuated according to a comparison between a nominal pressure or a nominal vehicle speed or quantities derived therefrom, in particular a nominal vehicle acceleration, and an actual pressure or an actual vehicle speed or quantities derived therefrom, in particular an actual vehicle acceleration.

A pressure adjustment device of a chambered doctor blade system of a printing press includes at least one chambered doctor blade, at least one ink chamber having at least one supply line connected to an ink reservoir and having at least one drain line or overflow opening that at least partially forms a return flow path of the medium from the at least one ink chamber to the at least one ink reservoir. At least one pressure release valve is arranged in the one of the drain line or overflow opening. Another pressure release valve is also arranged in the at least one supply line. One of the pressure release valves is configured as a passive pressure release valve. The at least one pressure release valve arranged in the at least one supply line has a line connection to at least one bypass line. That bypass line is arranged to at least partially form a return flow path of the medium from the supply line to the ink reservoir.

The invention discloses a dynamic sealing and pressure compensation structure for a shear valve slurry pulser. The dynamic sealing and pressure compensation structure comprises a rubber cylinder structure, wherein the rubber cylinder structure is arranged in an annular cavity formed by a cavity structure of a stator and an output shaft, one end of the rubber cylinder sleeves on the outer side of the output shaft, and the other end of the rubber cylinder structure sleeves on the outer side of a pulser shell; the stator sleeves on the outer side of the output shaft of a motor, and a rotor is connected to the tail end of the output shaft of the motor; and a cavity structure is arranged in the stator, the rubber cylinder structure is arranged in the annular cavity formed between the cavity part, close to the rotor, of the cavity structure and the output shaft, and the pulser shell is mounted in the annular cavity between the cavity part, far from the rotor, of the cavity structure and the output shaft. The invention relates to but is not limited to oil exploration equipment. By virtue of the dynamic sealing and pressure compensation structure, the configuration of the optimal dynamic sealing mechanism can be realized, and the service life of a dynamic sealing part can be effectively prolonged; and meanwhile, the configuration of an optimal pressure compensation mechanism can be realized, and the routing process of short sections in an instrument can be effectively optimized.

The invention discloses a folding piece unfolding, supporting and locking device. The device comprises a first supporting rod and a second supporting rod, the opposite ends of the first supporting rodand the second supporting rod are hinged through a first hinge shaft, the other end of the first supporting rod is provided with a first hinge shaft hole used for being hinged to the folding piece, and the other end of the second supporting rod is provided with a second hinge shaft hole used for being hinged to the main structure; a locking mechanism is arranged between the first supporting rod and the second supporting rod, the locking mechanism comprises a lock actuating cylinder, a piston rod, a first rocker arm, a second hinge shaft and a connecting assembly, the connecting assembly comprises a first hinge part, a second hinge part, a second rocker arm and a third supporting rod, the first hinge part is arranged on the first supporting rod, and the second hinge part is arranged on thesecond supporting rod. The locking mechanism is designed in a coordinated mode, two eccentricity parts and corresponding pulling direction and pressing direction two-way rigid locking are arranged, and the bearing capacity and the locking work reliability of the mechanism are improved.

The invention relates to a test system of a hydraulic control device of a gearbox. The test system comprises a main oil tank, an oil supply oil way structure, a flow test loop structure and a pressuretest loop structure, wherein the oil supply oil way structure is in circular communication with the main oil tank and the hydraulic control device; the flow test loop structure is in communication with the main oil tank and the hydraulic control device; the pressure test loop structure is in communication with the main oil tank and the hydraulic control device; the flow test loop structure comprises a flow test oil tank, a flow test oil way and a flow test oil return oil way; the flow test oil way is in communication between the hydraulic control device and the flow test oil tank; the flow test oil return oil way is in communication between the flow test oil tank and the main oil tank; the pressure test loop structure comprises a pressure test oil tank, a pressure test oil way and a pressure test oil return oil way; the pressure test oil way is in communication between the hydraulic control device and the pressure test oil tank; and the pressure test oil return oil way is in communication between the pressure test oil tank and the main oil tank. The test system aims to solve the problems that an effective and reliable test system is lacked in the prior art, and the successful development efficiency of the hydraulic control device is influenced.