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 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.

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.

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.

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 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.

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 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.