50results about How to "Promotes stress balance" patented technology

A metal gasket in which a thin metal plate for reinforcing the beads of an elastic metal plate is laminated on bead regions only of the elastic metal plate, whereby a stable sealing performance is secured for a long period of time. This metal gasket comprises a thin metal plate provided with beads extending around the circumferences of parallel arranged combustion chamber holes, and an elastic metal plate having combustion chamber holes and extending with a predetermined width and laminated on the portions of the thin metal plate which are around the combustion chamber holes so as to be opposed to valley portions of the beads. The thickness of the thin metal plate is set smaller than that of the elastic metal plate. The thin metal plate is fixed to the elastic metal plate with locking portions formed at the outer circumference of the former engaged with slits formed in the regions of the latter which are on the outer sides of the beads, the thin metal plate being combined with the elastic metal plate at joint portions thereof by spot welding or laser welding.

A metal gasket capable of preventing the occurrence of cracks in a stopper while employing a wave-shaped stopper, improving the contact pressure balance around the bead to enhance the engine performance, and improving the durability of the stopper. The metal gasket is constituted by a gasket component sheet having an opening formed to face a combustion chamber, and the gasket component sheet is provided with a combustion chamber bead surrounding the opening. An inner circumference side stopper lower than the height of the combustion chamber bead is formed along the combustion chamber bead in a portion between the combustion chamber bead and the opening such that at least a section of each wave where stress amplitude is large becomes thin, a thin portion and a thick portion are arranged alternately in each wave, and the hardness of the thin portion is higher than that of the thick portion.

A variable displacement vane pump includes a rotor, a swingable annular cam ring receiving therein the rotor, a pump body encasing the cam ring and rotor, and a pressure plate which is disposed between an end wall of the pump body and the rotor and which includes a backup surface and a sliding surface formed with an inlet port, an outlet port and a backpressure groove. The vane pump further includes a seal member which is provided between the backup surface of the pressure plate and the end wall of the pump body, and which includes an inlet-side segment extending on the radial inner side of the inlet port and the radial outer side of the backpressure groove, and an outlet-side segment extending on the radial outer side of the outlet port.

Three-way poppet valves having a poppet valve body, first and second poppet valves disposed in a valve guide within the body for motion between first poppet valve open and first poppet valve closed positions, a first poppet valve seat disposed in the poppet valve body so as to have freedom in a plane perpendicular to the poppet valve axis, the first poppet valve, when moving to the closed position, engaging the first poppet valve seat and centering the first poppet valve seat with respect to the first poppet valve, and when in the closed position, holding the first poppet valve seat against the poppet valve body, and a second poppet valve connected with the first poppet valve, the poppet valve body having a second poppet valve seat, the second poppet valve being in the closed position when the first poppet valve is in the open position and being in the open position when the first poppet valve is in the closed position.

A forced air induction system (10) constructed in accordance with the principles of a preferred embodiment of the present invention and configured for supplying compressed induction fluid to an internal combustion engine (E) for powering a vehicle (V) is disclosed. The illustrated forced air induction system (10) broadly includes a blower (12) for compressing induction fluid for the engine (E) and an improved carburetor hat (14) in communication with the blower (12) for delivering the compressed induction fluid to the carburetor (C). The illustrated blower (12) is a centrifugal supercharger. The illustrated carburetor hat (14) defines a neck section (26), a throat section (28), and an internal chamber (30) disposed between the neck and throat sections (26,28). The improved carburetor hat (14) is configured to prevent, or at least greatly reduce, the occurrence of thrust and stack up of induction fluid within the chamber (30) and in this regard includes an air-diffuser vane (36) disposed within the chamber (30) so that induction fluid flowing from the inlet (32) must travel around the vane (36) to reach the outlet (34).

The invention discloses an air conditioner and a control method and a control device for blowing waste heat thereof. After a heating mode of the air conditioner, the method also comprises the following steps: when a compressor stops operating, detecting the current operating air speed of an indoor unit as an indoor fan operates continuously; adjusting the operating air speed and the waste heat blowing duration of the indoor unit according to the operating air speed of the indoor unit and a preset monitoring air speed; and controlling the indoor unit to blow waste heat according to the adjustedoperating air speed and the waste heat blowing duration of the indoor unit. The technical problem that the air outlet temperature is too low as a result of the waste heat blowing time process is solved, and the operating air speed and the waste heat blowing duration of the indoor unit are adjusted.

The invention belongs to the technical field of microcontrol systems, and particularly relates to a thermophoresis coupling subparticle sorter. The thermophoresis coupling subparticle sorter is formed by bonding a substrate I and a substrate II, wherein an inlet for introducing liquid containing different subparticles is formed in the substrate I; an outlet for exporting the sorted subparticles is also formed in the substrate I; a sorting channel is formed in the substrate II; one end of the sorting channel is connected with the inlet of the substrate I, and the other end of the sorting channel is connected with the outlet in the substrate I; the sorting channel comprises an upper wall surface and a lower wall surface; an electrifiable heating chip is arranged on the lower wall surface for driving the subparticles to generate thermophoresis motion. The invention provides the subparticle sorter which realizes sorting according to the particle size, makes use of a thermophoresis coupling technology and is high in sorting efficiency and high in precision; the preparation process is simple, and the fluid resistance is low; no moving element is needed in the sorter, so that abrasion and blocking of the channel are avoided, and the pressure balance of fluid is facilitated.

A trochoidal oil pump which makes it possible to achieve an improved reduction in discharge pulsation and noise, and which makes it possible to realize such a reduction using an extremely simple structure. The trochoidal oil pump of the present invention comprises a rotor chamber 1 which has an intake port 2 and discharge port 3, an outer rotor 6 and an inner rotor 5. A plurality of inter-tooth spaces S, S, . . . that are formed by the tooth shapes 5a and 6a of the inner rotor 5 and outer rotor 6 comprise a maximum sealed space Smax that is positioned in the region of the partition part 4 between the intake port 2 and discharge port 3, a plurality of inter-tooth spaces S, S, . . . within the region of the intake port 2, and a plurality of inter-tooth spaces S, S, . . . within the region of the discharge port 3. The plurality of inter-tooth spaces S, S, . . . in the intake port 2 and discharge port 3 respectively communicate with each other

A volute for a pump featuring a volute or casing having a pump inlet for receiving a fluid being pumped, a pump discharge for providing the fluid, and a volute or casing vane forming double volutes therein. The volute has an upper cutwater farthest from the pump discharge defining an upper cutwater throat area and an end of passage for the upper cutwater, and also has a lower cutwater closest to the pump discharge defining a lower cutwater throat and a corresponding end of passage for the lower cutwater. The upper cutwater throat area is dimensioned to be greater than and not equal to the lower cutwater throat area so the upper cutwater throat area and the lower cutwater throat area provide substantially equal flow velocity at both the upper cutwater and the lower cutwater in response to an angular sweep of the fluid being pumped. The end of passage for the upper cutwater is dimensioned with an upper cutwater passage area that is greater than and not equal to a corresponding lower cutwater passage area of the corresponding end of passage for the lower cutwater so that upper and lower cutwater passage areas at the pump discharge are balanced as a function of differing rates of flow of the fluid being pumped therein and so that the fluid being pumped from associated ends of the upper and lower cutwater passage areas meets at the pump discharge with a substantially equal velocity.

A variable displacement vane pump includes a rotor, a swingable annular cam ring receiving therein the rotor, a pump body encasing the cam ring and rotor, and a pressure plate which is disposed between an end wall of the pump body and the rotor and which includes a backup surface and a sliding surface formed with an inlet port, an outlet port and a backpressure groove. The vane pump further includes a seal member which is provided between the backup surface of the pressure plate and the end wall of the pump body, and which includes an inlet-side segment extending on the radial inner side of the inlet port and the radial outer side of the backpressure groove, and an outlet-side segment extending on the radial outer side of the outlet port.

Disclosed is a valve arrangement which includes a housing having a first conduit having a first discharge cross-section, a second conduit having a second discharge cross-section, and at least one valve seat within the interior chamber of the housing having at least one valve seat opening which cooperates with at least one valve disc. The valve disc is moveable between a closed position seated on the valve seat opening, and an open position spaced apart from the valve seat opening. There can be also provided an actuator for moving the valve disc between the open and closed positions. The valve seat opening has a cross-section that is larger than the discharge cross-section of the first conduit and / or the discharge cross-section of the second conduit. The cross-section of the valve disc is greater than the valve seat opening.

The invention relates to the technical field of shield machines, in particular to a hobbing cutter with the function of adjusting the inner cavity pressure balance of a bearing. The hobbing cutter comprises a cutter body, a cutter shaft, a cutter ring, the bearing, an end cover and a floating seal device; the cutter shaft is installed in the cutter body through the bearing, the end cover and the floating seal device are installed at the two ends of the cutter body in a matched mode, the cutter ring is installed on the outer ring of the cutter body, and the cutter shaft is provided with a pressure balancing device which is communicated with an inner cavity of the bearing; the pressure balancing device comprises an oil hole drilled in the cutter body and a protective cover, a pressure transmitting bag is arranged in the oil hole, the protective cover fixedly and tightly presses the pressure transmitting bag, and the oil hole is communicated with the inner cavity of the bearing through a first pressure transmitting hole. According to the hobbing cutter, the structure is simple, the pressure balancing device is additionally arranged in an existing cutter structure and arranged on the cutter shaft, space is not occupied, the effectiveness of the bearing is guaranteed, and the effective service life of the cutter is prolonged.

Three-way poppet valves having a poppet valve body, first and second poppet valves disposed in a valve guide within the body for motion between first poppet valve open and first poppet valve closed positions, a first poppet valve seat disposed in the poppet valve body so as to have freedom in a plane perpendicular to the poppet valve axis, the first poppet valve, when moving to the closed position, engaging the first poppet valve seat and centering the first poppet valve seat with respect to the first poppet valve, and when in the closed position, holding the first poppet valve seat against the poppet valve body, and a second poppet valve connected with the first poppet valve, the poppet valve body having a second poppet valve seat, the second poppet valve being in the closed position when the first poppet valve is in the open position and being in the open position when the first poppet valve is in the closed position.

A system for enabling the efficient evacuation of air within a food container. A bellows-enabled lid fits into a respective container in an air-tight relationship. A bellows mechanism having plural resilient members and dual one-way valves provides efficient manual operation and resulting air evacuation from the container interior. A lid-mounted release valve with associated resilient member enables efficient release of vacuum conditions within the container. Plural ornamental configurations of the container with associated bellows-enabled lid are illustrated.

An earcushion with acoustic tube, comprising an earcushion body; the earcushion body is provided with a front acoustic cavity of speaker, the front acoustic cavity of speaker is provided with an acoustic tube, one end of the acoustic tube is arranged in the front acoustic cavity of speaker; the other end is connected with a resonant cavity, the volume of the resonant cavity is much greater than that of the acoustic tube, the resonant cavity is communicated with the outside atmosphere, the linear amplitude of the speaker vibration system may be increased and the system power may be improved, it can also improve the loop feedback environment.

The invention discloses a sinking pump for exploiting combustible ice through a decompression method. The sinking pump comprises a pump body, a pump cavity and a driving cavity are arranged at the upper portion and the lower portion of the pump body, a double-shaft extension motor is arranged in the driving cavity, a plurality of sliding blocks are installed in the circumferential direction of theside face of the double-shaft extension motor, the sliding blocks are in sliding connection with guide rods in a matched manner, and the inner sides of the guide rods are further provided with stretchable rods used for pushing the sliding blocks; and a rotating shaft is installed in the pump cavity, an impeller is installed on the rotating shaft in the pump cavity, and a plurality of stirring blades are installed on the side face of the fixing sleeve and at the upper end of the rotating shaft; and a drilling rod is installed at the lower end of the pump body, a second connecting base is installed at the upper end of the drilling rod, a first connecting base is installed at the lower end of the rotating shaft, a first connecting head is installed at an output shaft on the upper side of thedouble-shaft extension motor, and a second base is installed on an output shaft of the lower side of the double-shaft extension motor. The sinking pump is novel in structure, selection and control work is facilitated, the processing quantity within unit time is improved, and efficiency is improved.

An improved design for a golf putter has a putter head with a back surface formed in an elliptical shape elongated along a transverse axis normal to a swing plane for the putter, enclosing a hollow interior and having a circumferential rim forming an elliptical frame for the putter head. A head striking surface is formed with a sheet of taut, resilient material secured to the elliptical frame providing a trampoline-like drumhead effect when it makes contact with a golf ball that tends to return the ball's rolling trajectory to the target line of the swing axis even if contact is made off-center. The putter body is an elongated tubular body oriented in the direction of the swing axis, so that the peripheral weight of the putter is aligned along the swing axis and creates a pendulum plumb-bob effect of weight moving under gravity aligned in the swing direction. The front end of the tubular body is fitted through a central aperture in the back surface of the putter head and abuts the taut, resilient sheet material to form a circular “sweet spot” on the head striking surface.

A progressive vortex pump comprises an inlet housing in contact with the pumped fluid, a pump housing connected to the inlet housing, and an outlet housing connected to the pump housing and connected to a pumping pipe. The pump housing comprises a disc-shaped rotor having a central bore and a rim with vanes. Each rotor comprises at least one through hole along the axial direction, said through hole being positioned between the central bore and the rotor rim. Advantageously, the presence of a through hole on the rotor enables, under operating conditions, fluid exchange from the posterior fluid film to the anterior fluid film, thus promoting a pressure balance between the posterior and anterior fluid films, therefore enabling the rotor to work evenly, preventing rubbing on adjacent diffusers.

A valve arrangement (1) is proposed which has a valve (3), in which a valve chamber (7) is formed. The valve chamber (7) is delimited by a valve seat wall (12) which supports a plurality of valve seats (41) and is penetrated by a work duct (38), to which a consumer can be connected. The work duct (38) communicates with a compensation chamber (52) which is arranged on that side of the valve seat wall (12) which lies opposite to the valve chamber (7), with the result that the valve seat wall (12) is pressure-equalized with regard to its loading and high functional precision of the valve arrangement is ensured.

The invention relates to an electric connection device with good sealing performance and easy plugging, and the device comprises a first connection assembly and a second connection assembly which canbe plugged with each other, wherein the first connection assembly is provided with an insertion rod, the second connection assembly is provided with a plugging hole channel, an insulating sealing rodis movably assembled in the plugging hole channel, and an insertion rod can be inserted into the plugging hole channel and is electrically connected with the plugging hole channel. The rear end of theinsulation sealing rod is arranged in the environment communicated with the outside, good pressure balance inside and outside the female needle is achieved, on the basis of movable sealing of the insulation sealing rod, the sliding block is arranged at the rear end of the insulation sealing rod in a linkage mode, and the coupling matching structure is arranged to enable the sliding block and thefirst connecting assembly to form a linkage relation, thereby achieving the sealing when the male and female plugs are pulled out. In addition, the invention further provides a quick plug module, an unlocking structure and a control mechanism, and underwater manual plugging or ROV (underwater robot) plugging is facilitated.

The present invention provides a polyester film, wherein an arbitrary direction on the film surface is defined to have an angle of 0°, and three directions are defined to have angles of 45°, 90°, and 135°, respectively, clockwise from the 0° direction, and the difference between the maximum value and the minimum value of the stresses at 5% elongation in the four directions is 50 MPa or less, the difference between the maximum value and the minimum value of the stresses at 15% elongation i,n the four directions is 70 MPa or less, and the modulus of elasticity in any one of the four directions falls within a range from 2.0 to 3.5 GPa.

A valve structure includes a housing having an interior chamber, a first conduit connecting the interior chamber with a cooking chamber of a cooking device and having a first discharge cross-section, a second conduit connecting the interior chamber with the outside environment and having a second discharge cross-section, and at least one valve seat within the interior chamber having at least one valve seat opening which cooperates with at least one valve disc. The at least one valve disc moves between a closed position on the valve seat opening, and an open position spaced apart from the valve seat opening by changes in pressure in the cooking chamber. The valve operates to allow bidirectional flow of fluid to relieve over pressure and underpressure conditions, and enables automatic balancing of low pressure or vacuum in the cooking chamber.

The invention provides a pressure balance valve which can be mounted in a water discharge device. The pressure balance valve comprises a valve element cavity, a valve element, at least one elastic ring and at least one second elastic ring, wherein the peripheral wall of the valve element cavity is provided with an external cold water inlet, an external hot water inlet, an external cold water outlet and an external hot water outlet; the valve element is provided with a pressure sensing wall, a first ring part and a second ring part and defines a cold water pressure cavity and a hot water pressure cavity, the first ring part is provided with an internal cold water inlet and an internal cold water outlet, and the second ring part is provided with an internal hot water inlet and an internal hot water outlet; each first elastic ring is positioned in a first positioning ring groove in an embedded manner; each second elastic ring is positioned in a second positioning ring groove in an embedded manner. Due to the fact that the first and second elastic rings can be extruded to deform under water pressure so as to fill into gaps between the valve element and the valve element cavity, large fit tolerance can be allowed, valve element surface roughness requirements can be lowered, and machining and manufacturing cost is lowered greatly.

An improved design for a golf putter has a putter head with a back surface formed in an elliptical shape elongated along a transverse axis normal to a swing plane for the putter, enclosing a hollow interior and having a circumferential rim forming an elliptical frame for the putter head. A head striking surface is formed with a sheet of taut, resilient material secured to the elliptical frame providing a trampoline-like drumhead effect when it makes contact with a golf ball that tends to return the ball's rolling trajectory to the target line of the swing axis even if contact is made off-center. The putter body is an elongated tubular body oriented in the direction of the swing axis, so that the peripheral weight of the putter is aligned along the swing axis and creates a pendulum plumb-bob effect of weight moving under gravity aligned in the swing direction. The front end of the tubular body is fitted through a central aperture in the back surface of the putter head and abuts the taut, resilient sheet material to form a circular “sweet spot” on the head striking surface.

A pressure balance valve contains: a receiving chamber including an external cold-water inlet, an external hot-water inlet, an external cold-water outlet, and an external hot-water outlet; a valve core including a pressure sensing fence, a first ring portion and a second ring portion. Between the first ring portion and the pressure sensing fence is defined a cold-water pressure cavity, and between the second ring portion and the pressure sensing fence is defined a hot-water pressure cavity. The first ring portion has an internal cold-water inlet and an internal cold-water outlet, the second ring portion has an internal hot-water inlet and an internal hot-water outlet. The first ring portion also has at least one first fixing slot for fitting with at least one first resilient loop, and the second ring portion also has at least one second fixing slot for fitting with at least second resilient loop.

A drill head for deep-hole drilling includes cutting blade tips brazed to cutting chip discharge ports opened on a head distal end surface, guide pads mounted on a plurality of positions of the circumferential surface at the head distal end side, and a hollow inside portion made into a cutting chip discharge passage communicating with the cutting chip discharge ports. A guide pad portion having an arc surf ace that slide-contacts with the inner circumference of a cutting hole is formed on the outer end surface of the circumferential portion cutting blade tip.

The invention discloses a composite material small pit forming and pressurizing device. The composite material small pit forming and pressurizing device comprises a forming mold and a composite material structural part; a small pit is arranged in the forming mold, a small boss is arranged at the bottom of the composite material structural part, the small boss is arranged in the small pit, a plurality of tightly-arranged pressurizing blocks are arranged inside the small boss, an arc-shaped groove is formed in the top angle of each pressurizing block, the arc-shaped grooves are connected in sequence to form a conical hole, and a conical core shaft is arranged inside the conical hole. According to the composite material small pit forming and pressurizing device, the pressurizing balance of the small pit structure of the product composite structural part in the forming process is improved, and the product size precision is improved.

A progressive vortex pump comprises an inlet housing in contact with the pumped fluid, a pump housing connected to the inlet housing, and an outlet housing connected to the pump housing and connected to a pumping pipe. The pump housing comprises a disc-shaped rotor having a central bore and a rim with vanes. Each rotor comprises at least one through hole along the axial direction, the through hole being positioned between the central bore and the rotor rim. Advantageously, the presence of a through hole on the rotor enables, under operating conditions, fluid exchange from the posterior fluid film to the anterior fluid film, thus promoting a pressure balance between the posterior and anterior fluid films, therefore enabling the rotor to work evenly, preventing rubbing on adjacent diffusers.

The invention relates to an electrical drive unit for a motor vehicle, said drive unit comprising a wheel hub drive that drives a vehicle wheel. Said wheel hub drive has a sealing element which is affected by friction and by means of which the interior of the wheel hub drive is sealed off from the surroundings in an airtight manner. According to the invention, a ventilation device is provided by means of which a pressure difference between the prevailing air pressure in the interior of the wheel hub drive and the prevailing air pressure of the surrounding air can be compensated by displacing volumes of air.