92results about How to "Effective pressure" patented technology

A pressure sensor assembly comprised of a single and dual layer diaphragm with integrated force sensing flexure, such as a cantilever beam. Strain gages are positioned on the force sensing beam. The pressure forces the diaphragm to deflect. The deflection is constrained by the beam, which is compelled to bend. The bending induces strains in strain gages located on the beam. The strain gages are connected in a Wheatstone bridge configuration. When a voltage is applied to the bridge, the strain gages provide an electrical output signal proportional to the pressure. Composite diaphragm—beam pressure sensors convert pressure more efficiently and improve sensor performance.

A closed loop control system for a fuel pump based on characteristics of speed, pressure, and current. The pressure generated by the pump system is increased at the point in time when the pump system is working against a dead head system (i.e., coasting) to a level that a calibration valve is opened to a determined working point. By measuring the characteristic phase current as a function of the speed, the characteristic is able to be compared, with the pre-calibrated value of the hardware to perform an error compensation algorithm. The error compensation is overlaid with the standard pressure characteristic as a function of speed and phase current, and uses the pre-calibrated opening pressure value (i.e., the inflection point) of the calibration valve and/or in addition the change of the speed to the initial (first calibration), or to a sliding average therefrom.

A device for irrigation and/or insufflation during endoscopic surgery/procedures in a body cavity, comprising a first fluid pump device to deliver fluid to the body cvity, a second fluid pump device to move fluid from the body cavity, a control unit connected to the first and/or second fluid pump device, a blood pressure measuring device, wherein the control unit to derives a control signal based on a signal from the blood pressure measuring device, and sends the control signal to the first fluid and/or second fluid pump device, wherein the control signal is derived by processing the signal from the blood pressure measuring device using a correlation factor in the device, dependent on the relationship between a blood pressure measurement signal, and a perfusion pressure of the body cavity, wherein the first and/or second fluid pump device controls the pressure in the body cavity based on the control unit's control signal.

A wave soldering tank includes a soldering tank body for housing molten solder and a solder feed chamber disposed within the soldering tank body. An axial-flow, multiple-blade screw-type pump is disposed so as to draw molten solder into the solder feed chamber through an inlet and discharge the molten solder through an outlet. In a preferred embodiment, the pump includes a rotatable hub and a plurality of helical blades secured to the hub at equal intervals in the circumferential direction of the hub, each of the blades overlapping an adjoining one of the blades when the blades are viewed in the axial direction of the impeller.

A stiff, lightweight metal laminate includes a first continuous metal layer, a second continuous metal layer, and a reduced density metal core layer disposed between the first and second continuous metal layers. The reduced density metal core layer comprises a core metal and has an average density that is less than the density of the core metal. Planar metallurgical bonds secure the first and second continuous metal layers to the reduced density metal core layer. The metal laminate may be manufactured by press rolling the reduced density metal core layer sandwiched between the two continuous metal layers, after removing or overcoating the native oxide layer on each layer surface that contacts another layer in the metal laminate.

A yarn assembling apparatus for tight spin includes a bracket and a yarn assembling plate, wherein, a couple of protuberances are provided on both sides of the bracket, the protuberance and bracket center are in mirror symmetry, a groove is provided on the bracket for snapping with a boss on a wheel box, a couple of grippers are provided on the yarn assembling plate and are snapped with the corresponding protuberance on the bracket, a couple of feet are provided on the lower part of the yarn assembling plate, yarn assembling airflow guide tendons are provided in the feet, the height of the yarn assembling airflow guide tendons is lower than that of the feet, and the height difference is larger than the thickness of the conveyer band. The invention has advantages that a yarn assembling apparatus is between a drawing roller and a gripping roller, spans the conveyer band and elastically supports on a slide surface; the airflow before entering the suction duct can implement orienting and effective press to the strand of fibers by guiding of the guide tendon on the yarn assembling plate, thereby the airflow is effectively utilized above the strand of fibers, the negative-pressure is reduced and the energy consumption is saved. The yarn assembling apparatus allows the two strands of fibers to be not easy to unite and wind, by guiding of three airflow guide tendon on the yarn assembling plate when the yarn assembling apparatus spins the compound yarn, thereby improving the compound yarn quality.

The invention discloses an automatic paper cutter and belongs to the technical field of paper cutting equipment. The automatic paper cutter comprises a frame provided with a cutting platform and supporting legs, and a cutter controlled through a first air cylinder is mounted above the cutting platform through a support frame stretching across the cutting platform; the cutting platform is transversely sleeved with a square press box controlled through a second air cylinder, and the first air cylinder and the second air cylinder are connected through an electromagnetic valve and a power switch. By the arrangement, operating trouble can be solved, and problems that efficiency is low and a pressure plate cannot be pressed tightly resulting in the fact that notches of paper are not perpendicular during cutting and production quality is affected are solved.

Ligament support (12, 12′) for hooves, mountable on a hoof and in the mounted position effective for backing up the suspensory ligament between the hoof and the fetlock, including an elastic element (23-24-25) the length of which is adapted to run via the pastern of the hoof, from an anchor point situated on the inside of the hoof to an anchor point situated on the outside of the hoof, and which, in an area located to the pastern, is coupled to an elastic cuff (2 I′) mountable around the leg.

A directional valve for controlling an actuator by a pressurized medium, including: a pressure port; a work port; a tank port; a spool moving axially inside the directional valve; a first position of the spool, in which the spool tends to be set, and a second position, to which the spool can be moved by a pilot control force and in which the spool opens the flow of pressurized medium from the pressure port to the work port. The directional valve further includes a feedback chamber in which the pressure generates a feedback force effective on the spool and opposite to the pilot control force. In its second position, the spool guides the pressure of the work port to the feedback chamber, and in the second position, the directional valve generates a feedback force proportional to the pressure of the work port, moving the spool to shut off the flow.

A yarn accumulation device for compact spinning is arranged between a draft roller and a holding roller, which comprises a yarn accumulation aeroscopic plate and a fixation apparatus. The yarn accumulation aeroscopic plate fixed on a fixation apparatus is provided with two yarn accumulation air long guide holes in parallel each other. The yarn accumulation air long guide holes are in parallel with a pumping seam on an accumulation tube, which are also in a symmetrical arrangement on both sides of the pumping seam. Both ends of the lower part of the polymer yarn air long guide hole are provided with a pair of support legs, spanned a conveyor belt, fit tightly and supported on a sliding surface. The invention has the advantages that the yarn accumulation device is disposed between the draft roller and the holding roller, spanned the conveyor belt and flexibly supported on the sliding surface. Through the guide of the air guide hole on the yarn accumulation aeroscopic plate, the air before entering the pumping channel can be in the implementation of directional effective pressing to the strips. The air above the strips is effectively utilized, thus the negative pressure is reduced and the energy is saved.

A method for producing a sinter layer connection between a substrate and a chip resulting in an electric and thermal connection therebetween and in reduced mechanical tensions within the chip. The method produces a sinter layer by applying a multitude of sinter elements of a base material forming the sinter layer in structured manner on a contact area of a main surface of a substrate; placing a chip to be joined to the substrate on the sinter elements; and heating and compressing the sinter elements to produce a structured sinter layer connecting the substrate and chip and extending within the contact area, the surface coverage density of the sinter elements on the substrate in a center region of the contact area being greater than the surface coverage density of the sinter elements in an edge region of the contact area, and at least one through channel, extending laterally as to the substrate's main surface being provided towards the contact area's edge. A large-area sinter element is situated in the contact area's center region, and circular sinter elements is situated in a contact area edge region. The sinter elements may also have notches. Also described is a related device.

The present development is for a closure which provides a liner for abutting a surface and maintaining an effective pressure against a peelable seal affixed to a container lip as the sealed container is exposed to relatively high temperature and pressure conditions. The liner which abuts a surface of the seal sandwiches the seal between the liner and the container lip. The liner defines a resting thickness at ambient temperature and pressure conditions and is made from a material capable of being compressed to a thickness less than the resting thickness and of recovering to a recovery thickness sufficient to allow the liner to maintain a positive pressure against the seal upon exposure to elevated temperatures, elevated pressure, or a combination of elevated temperature and elevated pressure.

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.

An immobilization device including an anterior component including a two-dimensional shaped section contoured to a shape of the human chest and an anterior outwardly bowed area relative to the two-dimensional shaped anterior section generally corresponding to the sternum of the wearer. The device also includes a posterior component including a two-dimensional shaped section contoured to a shape of the human back and a posterior outwardly bowed area relative to the two-dimensional shaped section corresponding to the spinal column of the wearer, with elongate cushion elements connected to and extending within a width of the posterior outwardly bowed area. A strapping system connects both the anterior and posterior components to one another.

The present invention integrates adsorption and liquefaction techniques to separate hydrocarbon feed mixtures into light and heavy components. A feed is partially liquefied in two or more stages. A first stage occurs at higher pressure. A second stage occurs at lower pressure. At each stage, gas and liquid components are separated. The separated heavy components resulting from liquefaction provide a purified natural gas liquid product. The separated gas components may be further processed and/or handled to provide purified natural gas. Heavy streams resulting from the further processing of the separated gas streams may be recycled and incorporated into the feed mixture. By using separate liquefaction stages at different pressures to favor C1 and then C2 separation from the heavy stream, a natural gas liquid product with high C3+ purity results.

A fixation apparatus comprises a holder and a tension sleeve receiving a bone screw, wherein the bone screw has a shaft with a front thread and a head at the rear end, and the holder has a through borehole with a receiving seat, in which the tension sleeve is mounted and able to swivel, while the shaft has a thickening in a rear region, to the front of the head, whose width increases toward the head, and the width of the tension sleeve is larger than the width of the shaft immediately before the thickening and smaller than the greatest width of the thickening. When screwed in, the thickening widens the tension sleeve so that it is pressed by its envelope against the wall of the receiving seat. In this way, an angle-stable pressing is achieved for any given orientation of the bone screw.