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.

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.

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.

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.