69results about How to "Avoid frictional contact" patented technology

A powered toothbrush to provide oral hygiene having a brush section with a first bristle carrier that is powered and driven to rotate in an oscillating manner through a prescribed angle. A second bristle carrier is pivotally connected to the first bristle carrier and also pivotally connected to the brush section. The second bristle carrier oscillates in accordance with the oscillation of the first bristle carrier in a sectorial manner. The bristle carriers may include a variety of elastomeric and non-elastomeric bristles or combinations thereof to provide cleaning, polishing, whitening and stimulating to the teeth and gums.

The invention discloses a proportional electromagnetic valve for an electrically controlled high-pressure common-rail fuel injection system of a diesel engine and relates to an electromagnetic valve. A position at which a fixed iron core (8) and a movable iron core (3) of the electromagnetic valve attract each other is a conical polar plane. The fixed iron core (8), the movable iron core (3), a guide pipe (18), a spiral spring (15), an electromagnetic coil (4), a square iron core (19), a shell (14) and a valve body (1) jointly form the electromagnetic valve in an assembling way. When driving current is input into the electromagnetic coil, a magnetic field is generated through a magnetic path in the valve, electromagnetic force with magnitude which is in proportion with the magnitude of the driving current and is not related to a stroke is generated relative to the movable iron core, the movable iron core is enabled to overcome spring force to move, the movable iron core stops moving at a balance point of the two kinds of force and therefore is kept at a stable position, and the movable iron core can proportionally and continuously move according to the magnitude of the driving current to control the opening of the valve. Under complex working conditions under which the diesel engine works, the electromagnetic valve not only can stably control the on/off of a fuel path, but also can accurately and proportionally control the flow of the fuel path according to the driving current.

A cooking fuel ignition assembly for an outdoor cooking apparatus as in a barbeque grill. The ignition assembly includes a tinder support combination of an ash can and tinder support stand. An operator inserts the tinder support stand within the ash can such that its lower spacer structure makes contact with the base of the ash can receptacle and the upper tinder platform is in the upper region of the ash can. The operator places tinder T on the upper surface of the tinder platform. The tinder combination with tinder is mounted in suspended fashion below an aperture in the grill base such that upon ignition of the tinder a flame extends up through, for example, an interface slide catch collar assembly and into an ignition relationship with supported cooking fuel above.

A stationary scroll (40) is provided with a stationary side wrap (41) and an outer peripheral portion (42). The stationary side wrap (41) is formed into a spiral wall shape. The outer peripheral portion (42) is formed into a ring-like shape enclosing the periphery of the stationary side wrap (41). The movable scroll (50) is provided with a first flat plate (51), a movable side wrap (53), and a second flat plate (52). The movable side wrap (53) is formed into a spiral wall shape. Additionally, the movable side wrap (53) is caught between the first flat plate (51) and the second flat plate (52), with the movable side wrap (53) in mating engagement with the stationary side wrap (41). In the movable side wrap (53), the first flat plate (51) is formed integrally with the movable side wrap (53). Additionally, the second flat plate portion (52) is formed as a separate body from the first flat plate (51) and the movable side wrap (53) and is coupled to the first flat plate (51) with a bolt (62).

In one aspect, a modular link conveyor chain including slats is capable of assuming a compressed and an expanded condition so as to permit side-flexing while moving along a forward run and a return run in an endless path. The chain is formed of links arranged in rows spaced apart in the conveying direction, the links of a first row including aligned apertures and the links of a second row including oversized apertures, such as slots, for aligning with the aligned apertures of the links in the first row. A first connector is associated with the corresponding apertures to interconnect the first and second rows of links. At least one elongated slat is mounted to the connector. The slat maybe mounted for pivoting movement between a first position forming at least part of a conveying surface along the forward run, and a second position along the return run.

A double pipe type heat exchanger includes an inner pipe having a first flow path defined therein and an outer pipe arranged around the inner pipe to define a second flow path between the inner pipe and the outer pipe. The inner pipe includes a spiral groove formed on an outer circumferential surface of the inner pipe to extend along a longitudinal direction of the inner pipe. The outer pipe includes a reduced diameter portion protruding inwardly so that the inner surface of the outer pipe is intermittently contacted with the outer circumferential surface of the inner pipe.

The invention relates to a pocket machining device and a method for machining an integral bearing retainer of wind power equipment. The machining method comprises the steps of material feeding, rough rounding, welding, fine rounding and shaping in sequence, as well as pocket machining; the machining method is characterized in that: in the material feeding step, a cold-rolled plate is cut into a straight-strip-shaped pocket-free plate; the pocket machining step is performed after the fine rounding step and before the shaping step; and the roundness of pockets on the retainer can be ensured, the pockets can be prevented from deforming and generating multi-edge round, and the precision of the pockets on the retainer can be guaranteed. The pocket machining device comprises a supporting mechanism, a radial positioning mechanism, an axial positioning mechanism, a retainer driving and moving mechanism and a movable arm limiting mechanism, as well as a hydraulic control system which is used for controlling a first cylinder, a second cylinder, a movable arm cylinder and a third cylinder. The functions of clamping, positioning, equal-distance feeding, compressing and discharging and the like of the retainer after being welded into a whole can be realized during pocket laser cutting and machining.

The invention discloses a wellhead drainage device with a vane type closed valve, which comprises an upper casing and a lower casing fixedly connected, an annular cavity is formed between the inner cylinder of the upper casing and the lower casing , the outer wall of the inner cylinder is sleeved with a push ring, and a plurality of plastic blocks are fixed on the push ring; a hub is installed in the middle of the inner cylinder, and a plurality of rotatable blades are installed on the hub, and the blades The wide end of the blade is hinged on the inner cylinder through a mounting column, the end of the mounting column at the wide end of the blade is fixed with a rocker arm, the end of the rocker arm is fixedly connected with a push-pull rod, and the other end of the push-pull rod is hinged on the On the push ring, the top of the inner cylinder is provided with a strip-shaped water inlet, and the bottom of the lower shell is provided with a circular hole-shaped water outlet, and the water inlet of the water inlet is more than ten times the water outlet of the water outlet . The invention utilizes the closed valve which can be opened and closed automatically, and takes water permeability and environmental protection into account.

A socket contact terminal for electrical connection between a connection portion formed of a metal conductor on a printed circuit board and a connection terminal of an IC package. The contact terminal comprises a metal terminal composed of a main columnar portion and arm portions on both sides and having an angular U shape and an elastomeric member attached to the metal terminal. A metal surface is exposed from the outer surface of each arm portion. The elastomeric member is firmly held between the arm portions of the metal terminal and exhibits a repulsive force when the arm portions are pressed in the direction that the arm portions approach each other.

The invention discloses a guide wire feeding device for a computer wire-stripping machine. The guide wire feeding device comprises a fixed base, a butt joint clamping plate and a guide wheel. The guide wheel is movably mounted on the upper portion of the fixed base. A fixed side plate is fixedly mounted on the outer surface of the rear end of the fixed base. The fixed base is in butt joint with the guide wheel and is fixed to the guide wheel through the fixed side plate. The middle of the inner side of the guide wheel is connected with a connecting rod in a sleeving manner, and the outer surface of the connecting rod is movably sleeved with two sets of bearings. The guide wheel and the connecting rod are movably connected through the bearings. The guide wheel and the fixed side plate are in butt joint and are fixed through the connecting rod. A fixed clamping ring is fixedly mounted on the side, close to the fixed side plate, of the outer surface of the connecting rod. According to theguide wire feeding device for the computer wire-stripping machine, sliding motion replaces traditional friction motion, contact of a guide wire and a guide hole can be effectively avoided, and the service life of equipment is prolonged; and wire raw material waste is avoided, the guide wire feeding device is provided with an adjusting structure, and the use flexibility of the guide wire feeding device is improved.

An automobile brake caliper for reducing noise is disclosed. An elastic member is installed so that elastic forces can act between the respective components. Thus, when the automobile generates vibrations while running over a rough terrain, the adjacent components avoid frictional contact, thereby eliminating any impact noise.

A nozzle for applying a liquid adhesive to a web moving continuously in a travel direction has a body having a passage forming an outlet opening generally transversely to the direction immediately adjacent the moving web at a face of the body so that the liquid adhesive flows through the passage and out the outlet end onto the moving web. Structure on the face of the body forms immediately upstream of the outlet a porous region. Air is fed through the structure and out of the face to form between the region and the web an air cushion.

A YZ-latch for holding down a piece of freight on a loading floor in an aircraft which has a base holding an axle stub which in turn has mounted thereon two rollers for rolling contact with the freight piece. One roller holds against lateral displacement in the Y-direction. The other roller holds against vertical displacement in the Z-direction. Free movement is permitted in the X-direction. Either the axle stub with fixed rollers is rotatable, or the rollers are rotatable on the fixed axle stub, or at least one roller or both rollers are rotatable on a rotatable axle stub.

The invention discloses an airtight door closed running method and an airtight door closed running device. The method comprises the following steps of: arranging a front lifting wheel an a rear lifting wheel on an airtight door; running the front lifting wheel and the rear lifting wheel on respective door rails consisting of double rails respectively, wherein each door rail consisting of double rails is provided with a parallel guide section and a closed guide section respectively; when the lifting wheels run to a position to be closed, feeding the lifting wheels into the closed guide sections of the door rails; simultaneously guiding the lifting wheels inwards and downwards by the door rails of the closed guide sections for stable closed running of the airtight door; contrarily, simultaneously guiding the lifting wheels outwards and upwards by the closed guide sections of the door rails during opening of the airtight door for stable opening of the airtight door; then guiding the lifting wheels by the parallel guide sections of the door rails in parallel; and opening the airtight door. According to the airtight door closed running method provided by the invention, stable separation or closing of the airtight door and wall as well as ground can be guaranteed during opening or closing, frictional contact of a sealing strip is avoided, and the service life is prolonged.

The invention discloses a lifting device for turning bearing rings, and mainly relates to the field of bearing machining. The lifting device comprises a shell, wherein a feeding port and a dischargingport are formed in the shell; two rollers are rotatably connected to the inside of the shell; a belt is connected between the two rollers; and a plurality of lifting plates are arranged on the belt.The lifting device is characterized in that the ends, facing the discharging port, of the lifting plates are inclined downwards; bearing temporarily storing devices are arranged on the lifting platesand comprise through holes; a baffle is slidably connected inside each through hole along the height direction; a first inclined plate is arranged at the bottom of each baffle; a sleeve pipe is arranged at the bottom of each lifting plate; a moving column is horizontally connected to the inside of each sleeve pipe in a sliding mode; a second inclined plate is arranged at one end, close to the corresponding baffle, of each moving column; and inclined retracting plates are respectively arranged above the feeding port and the discharging port. The lifting device for turning the bearing rings hasthe beneficial effects that it can be ensured that bearings do not relatively rub against the side wall of the shell in the lifting process of the bearing rings, so that quality of the machined bearings is guaranteed.

An escalator with steps having a tread surface and riser surface has riser brushes arranged at the riser surface. The riser brushes provide a barrier for the gap which is normally present between the tread surface of a first step and the riser surface of an adjacent step. The riser brushes may be mounted to a brush strip which is guided along the riser as the steps transfer between vertical and horizontal travel.

The invention relates to a vertical bar extending and back-adjusting installation method for a precast concrete composite slab. The installation method includes the following steps that (1), horizontal reinforcing bars of two ends of the composite slab are bended upwards for 90 degrees; (2) a beam formwork and a wood formwork are arranged, and a foam rubber strip is arranged on the upper surface of the wood formwork on the edge of a cavity opening of a beam molding cavity of the beam formwork; (3) a reinforcing cage is placed into the beam molding cavity, according to a traditional method, beam steel is tied up firstly, and the composite slab is transported to a site for vertical lifting and placement; (4) the horizontal reinforcing bars of two ends of the composite slab are bended to return to a horizontal state; and (5) then concrete pouring is conducted according to a conventional method and maintained for a period of time. The rapid installation of the composite slab can avoid collision between the composite slab horizontal reinforcing bars and top beam longitudinal bars of a frame beam so as to speed up construction efficiency and reduce the manual workload, at the same time,tilting installation is not needed, in the hoisting process of the composite slab, and the friction between the composite slab and the foam rubber strip is avoided so as to prevent the leakage of slurry of concrete during pouring of the beam and the composite slab.

The invention relates to a vacuum valve for a substantially gas-tight interruption of a flow path, having a valve housing (1) comprising a first opening (3) with a geometric opening axis (4) and a valve seat (5). There is also a valve disc (8) having a first disc portion (9) with an outer boundary (9a) and a second disc portion (11), the second disc portion being parallel to the opening axis (9a) within the outer boundary (9a). 3) in the direction of linear movement and installed in a sealed manner. Controlled mobility of the valve disc (8) is provided by a drive mechanism connected to the first disc portion (9). The first disc (9) has a first contact surface (15) directed axially towards the valve seat (5), the first contact surface being designed to be present in the first contact area with the sealing surface in the closed position (C) (14) Axial sealing contact. The outer boundary (9a) has an inner surface (16) directed radially inward. The second disc portion (11) has a radially outwardly directed outer surface (17) which is designed to exist in sealing contact with the inner surface (16) in the region of the second contact zone. At least for a given radial angle around the center (Z) of the valve disc (8), the first radial distance from the center to the first contact surface is smaller than the second radial distance from the center to the second contact zone.

The invention relates to a turbo machine (1), comprising a bearing housing (30), shafts (40',40'') supported on an inner chamber(31) of the bearing housing (30) rotatably, working impellers(25',25'') connected with longitudinal end parts(41',41'') of the shafts (40',40'') on a material and arranged on the outside of the inner chamber(31) and in a working impeller chamber(22), and a seal member(50) arranged on the circumferences of the shafts (40',40'') to thereby seal the inner chamber(31) relative to the working impeller chamber(22); wherein, the seal member is used for sealing the common effect of two seal surfaces(51',52',51'',52'') rotated oppositely. The invention aims to provide a turbo machine which prevents an undesired welded loose release between the working impellers and the shafts reliably by forming and arranging the seal surface materials of at least one seal surface of the two seal surfaces on isolation layers(T',T'') between the seal member and the working impellers.