66results about "Engine seals" patented technology

An atomization assembly configured to be combined with a battery assembly to form an electronic cigarette comprises a mouthpiece and a body detachable with the mouthpiece. The body includes an open end to discharge smoke into the mouthpiece, an oil storage cavity for storing tobacco oil is defined inside the body, a receiving groove is defined at the open end, an filler hole connected to the oil storage cavity is defined on a bottom wall of the receiving groove, and an elastomeric seal for sealing up the filler hole is received in the receiving groove. By implementing the filler hole, it is easier to add the tobacco oil, and by implementing the elastomeric seal, the tobacco oil can be avoided leaking out. Further, the atomization assembly is provided with simple structure, compact connection and easy assembly.

A bushing includes an interior surface, an exterior surface, a first end, and a second end. An end face forms at least part of each of the first end and the second end. At leaset one of the exterior surface and the end face includes a sealing surface formed at least in part of a coating including a material having a hardness level greater than about 1200 Knoop. The sealing surface has a thickness greater than about 35 microns and an average roughness (Ra) less than about 0.25 micron. In one embodiment, the bushing may be used on an endless track for a track-type work machine.

A half-open position holding apparatus for a vehicle opening and closing member includes an opening and closing member supported in a vehicle body to be openable and closable and has an opening and closing member driving unit that has a motor and a electromagnetic clutch that can put a power transmission path connecting the motor and the opening and closing member in a connected state and in a disconnected state, for driving the opening and closing member in opening and closing directions thereof, and an in-vehicle battery serving as a power source for the electromagnetic clutch. The apparatus includes a controller for controlling the opening and closing member driving unit, that, when the opening and closing member is held at a half-open position between a fully-closed position and a fully-opened position, holds the opening and closing member at the half-open position by stopping the motor, putting the electromagnetic clutch in a connected state, and controlling the electromagnetic clutch to a half-open position holding connection state such that a voltage applied to the electromagnetic clutch becomes a predetermined voltage lower than an output voltage of the in-vehicle battery.

Described herein are embossing methods for forming pico liter well arrays (and other structures), arrangements of such pico liter well arrays, for example, in arrays of pico liter well areas, and methods of forming templates for such embossing. Also described as wells with a refractive index similar to that of an aqueous medium used for supporting cells in the wells.

A weather strip is attached over the entire surrounding part of a door opening of a vehicle. The weather strip is formed by extrusion-molding, and has a trimming portion having a substantially U-shaped cross section and a hollow seal portion. A first projection portion and a second projection portion are formed on an outer face of an outer side wall part of the trimming portion in such a way as to extend to the outside of the vehicle. The seal portion has an end part connected to a leading end part of the first projection portion, and also has the other end part connected to a leading end part of the second projection portion. The second projection portion is placed at the side of an outer periphery of the weather strip, that is, at the side at which an amount of bending-deformation increases when the corner portion of the weather strip is formed. The second projection portion has a thickness along the outer side wall part and a projection length, each of which is larger than a thickness of a general part of the seal portion. A sponge layer extending from the seal portion may be provided on an outer surface side of the second projection portion.

A frameless soft convertible top having a top section with a storage compartment for stowing removable side sections and a rear section of the convertible top. The convertible top has mounting straps with fasteners sewn to the top section for attaching the convertible top to body components of a vehicle and a mounting assembly for attaching to a windshield frame of the vehicle.

Provided is a gasket capable of maintaining a high sealing property under a high temperature, in which a gasket basic substance and coverture are not sublimated or decomposed when the gasket is used under a high temperature above 500° C. The gasket for a high-temperature joint includes a gasket basic substance formed by filling a heat-resistant filler mainly composed of diatomaceous earth into gaps of a meshed metallic reinforcing member, and coverture made of a heat-resistant antifriction material mainly composed of a mixture of boron nitride and polytetrafluoroethylene resin for covering a surface of the gasket basic substance.

A contact type dynamic sealing method and a disc-shaped sealing ring dynamic sealing device belong to the dynamic sealing device in the field of mechanical transmission. It solves the problem of oil leakage caused by the wear and aging of the traditional cup sealing ring. Near the leakage gap of the transmission device, there is a dish-shaped sealing ring composed of a positioning ring, an elastic body and at least one sealing ring. Install the positioning ring of the sealing ring on the journal of the transmission shaft or the sealing pressure of the box bearing. The inner side of the cover, so that the sealing ring of the sealing ring is in close contact with the inner surface of the bearing sealing gland or the side of the bearing retaining ring, blocking the leakage gap between the transmission shaft and the box bearing sealing gland to achieve the purpose of sealing. There are many structural forms of the disc seal ring, which has the characteristics of simple structure, convenient installation and disassembly, good sealing effect and long service life. It is suitable for dustproof and lubricating oil sealing of various transmission boxes.

A seal seals a bearing internal space in a bearing apparatus for a vehicle. The seal includes a core and a first elastic member attached to the core. The core includes a first tubular portion and a first flange portion. An outer peripheral surface of the first tubular portion is arranged so as to face an inner peripheral surface of an outer ring of the bearing apparatus. The first elastic member has a thick portion and a thin portion provided on the outer peripheral surface of the first tubular portion. The thick portion is arranged at an end of the first elastic member that is away from the bearing internal space in an axial direction of the bearing apparatus. The thin portion extends from the thick portion toward an end of the first elastic member that is opposite to the thick portion.

A shaft sealing device with a simple internal structure switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because of no abrasion accompanying the movement of a sealing material or a sealing member, thereby enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion disposed in a device body, and flow passages disposed in the shaft sealing portion for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body.

The gasket assembly includes a gasket layer and a separately formed shim layer. The shim layer and gasket layer are formed with at least one media-conveying opening that correspond to media-conveying passages communicating between first and second members to be clamped together and sealed by the gasket at the joint between members. The shim layer has an adhesive layer applied to its back surface 36 to enable the shim layer 14 to be adhered to original clamping face of the one of the first or second members in order to build up the surface or to cover up damage on the clamping face that could impair proper sealing with the gasket.

A sealing element for sealing off a drive unit, having a radial shaft sealing ring that has a radial sealing face for sealing off from a first component and a diametrically opposed radial sealing lip for sealing off from a further rotatable component, in which an axial sealing ring for axial sealing of a third component is integrally formed onto the radial shaft sealing ring.

An apparatus for controlling a motor driving an opening and closing body of a sunroof device includes a drive portion and a control portion. The drive portion supplies current to the motor to rotate the motor. The drive portion has a changing device for changing the torque of the motor. The control portion controls the changing device such that the torque of the motor is increased as the traveling speed of a vehicle is increased during a closing operation of the opening and closing body. Therefore, closure force and catching force of the opening and closing body during a closing operation is optimized.

The invention provides a sealing structure and a gate valve with the sealing structure. The sealing structure is suitable for being arranged between a valve rod and a valve deck, wherein the valve deck is arranged on the valve rod in a sleeving manner. The sealing structure comprises a first seal, a second seal, at least one third seal and at least one fourth seal. The first seal is used for sealing one end of the valve rod. The second seal is used for sealing the other end of the valve rod. The third seals are arranged between the first seal and the second seal, are close to the first seal and can replace the first seal to achieve the sealing function only when sealing of the first seal fails. The fourth seals are arranged between the first seal and the second seal, are close to the second seal and can replace the second seal to achieve the sealing function only when sealing of the second seal fails. Due to the fact that the third seals and the fourth seals are arranged, the sealing structure can achieve continuous sealing, and a good sealing effect can be guaranteed. In addition, when the first seal and the second seal carry out seal normally, the third seals and the fourth seals do not bear liquid pressure, deformation is small, extrusion force between the sealing structure and the valve rod is small, abrasion is small, and the service life is long.

A valve and stem sealing assembly capable of preventing leakage under demanding environmental and operating conditions. The valve comprises a body and bonnet secured together to house a flow-element, stem, and stem sealing assembly. The body may contain a body joint encapsulated within its liner. The flow-element is positioned between a first port and second port on the valve. The body and bonnet may be configured to eliminate rotational forces from being translated to the bonnet. The stem sealing assembly comprises a primary seal, primary shaft insert, spacer, and force transmitting member. The stem sealing assembly may also comprise a secondary seal and secondary shaft insert. The stem seal assembly is substantially adjacent to the stem, and configured to fit within an annular space or cavity between the stem and the first body half, second body half, and bonnet. The valve may also include a leak detection port.

A developer unit for an electrophotographic image forming device includes a developer roll rotatably mounted on a housing. The developer roll includes a roll body cylindrically disposed around a shaft and forming an outer circumferential surface of the developer roll. An axial end of the roll body includes an undercut forming a hollow region in the axial end of the roll body. An elastomeric end seal has a curved rotary seal portion that is sandwiched between a portion of the housing and the outer circumferential surface of the developer roll at the axial end of the developer roll. An interference between the curved rotary seal portion of the end seal and the outer circumferential surface of the developer roll decreases along an axial dimension of the developer roll in a direction from an axially outboard edge of the end seal toward an axially inboard edge of the end seal.

A bearing system includes a bearing housing configured to house a bearing and enclosing a free volume for receiving a lubricant, a bearing, a pump configured to pump lubricant into the free volume, a shaft in an opening in the housing rotatably supported by the bearing, an exclusion seal between the shaft opening and the shaft that is repeatably and non-destructively shiftable from a sealing state in which it substantially prevents lubricant from leaving the free volume and a release state in which it allows lubricant to escape between the exclusion seal and the shaft. The exclusion seal is caused to shift by increasing and decreasing a pressure in the bearing housing, and the system includes a controller configured to repeatedly shift the exclusion seal by raising and lowering the pressure in the free volume to continuously maintain a lubricating film between the exclusion seal and the shaft.

The invention discloses a magnetic liquid sealing device adopting corrugated-pipe-assisted sealing. The magnetic liquid sealing device comprises a sealing piece shell, a cylinder pin sleeve, a corrugated pipe, a corrugated pipe upper-end flange and a corrugated pipe lower-end flange. The cylinder pin sleeve is used for clearance control and positioning. The corrugated pipe is connected with the corrugated pipe upper-end flange and the corrugated pipe lower-end flange correspondingly in a welded manner. A sealing slot of the corrugated pipe upper-end flange is internally provided with a first sealing ring, and a sealing slot of the corrugated pipe lower-end flange is internally provided with a second sealing ring, so that a corrugated pipe assembly is formed. The corrugated pipe upper-end flange is in fit with the sealing piece shell, and preset gaps are reserved between the corrugated pipe lower-end flange and the cylinder pin sleeve and between the corrugated pipe lower-end flange andthe sealing piece shell. Corrugated-pipe-assisted sealing is adopted, a buffering role can be played through the elasticity of the corrugated pipe when a rotating shaft generates radial jump, and thus the problem of damages to a sealing piece caused by jump of the rotating shaft in a high-speed working condition is effectively solved.

The invention discloses an air-resistance type sealing structure and a working method. The air-resistance type sealing structure is structured such that a high pressure drainage pipe is additionally arranged on the wall surface of an upstream end of an air flow of a conventional labyrinth seal stationary sub block, part of high pressure air flow is introduced into a pressure equalizing slow flow chamber in the stationary sub block through the drainage pipe, and the air flow is pressed in uniformly further through a pressure inflating air guide pipe in an inner cavity. By means of an air flow pressure inflating method, the effective pressure difference in a front seal area is reduced, so that the original power leaked from a gap is reduced from the origin. Meanwhile, under induction of highpressure jet entrainment, a large-dimension vortex structure which fills the whole chamber is further formed in a middle cavity of the seal gap connected to the pressure inflating air guide pipe in the inner cavity, so that the energy dissipation is enhanced, the leakage amount of the gap is reduced and the safety and economic benefit of operation of a unit are improved.

The invention relates to a sealing device and method of mounting the same. A sealing device (10) which seals, by means of a PTFE seal lip (13), the outer periphery of a valve shaft of a butterfly valve used for an EGR system of a vehicle. The sealing device (10) is provided with mounting rings (11, 12) press-fitted in and fixed to a valve shaft insertion hole (102), and also with the seal lip (13) held by the mounting rings (11, 12) and made to be in slidable contact with the outer peripheral surface of the valve shaft. The seal lip (13) is formed in a circular disc shape using a fluororesin, and an inner diameter section (13b) of the seal lip (13) is forcibly deformed by the valve shaft so as to face the flow path (101) side.

The invention discloses a self-tightening composite sealing gasket, which comprises an annular first metal plate and an annular second metal plate which are laminated to form an annular composite body. A gap is reserved in the composite body; the outer ring edges of the first metal plate and the second metal plate are fixed with each other, and the inner ring edges thereof are also fixed with each other; the inner ring edge or the position close to the inner ring edge of the composite body is provided with a medium access passage, the gap can be only communicated with the outside through the medium access passage, and when a medium comes into the gap through the medium access passage, the gap is expanded. When the gasket works, the gap can be expanded under the action of the pressure of the medium, and the compensation for sealing specific pressure can be realized by the medium transmitted by the pressure so as to achieve the self-tightening sealing effect. In order to realize the function, the self-tightening composite sealing gasket has another structure, wherein an opening is formed between the inner ring edges of the first metal plate and the second metal plate, and the inner ring edges of the first metal plate and the second metal plate are not fixed with each other; and the gap is communicated with the outside only through the opening, and when the medium comes into the gap through the opening, the gap is also expanded.

A vehicle door sash structure includes a holding unit. The holding unit includes a guide locking portion arranged in a region of a run channel opposed in a vehicle inner-outer direction to a tip end rim of an inner beam portion in a state of temporary attachment after completion of attachment of a molding to an outer beam portion. The guide locking portion is inclined in a direction to guide the run channel to a position of completion of attachment while coming into contact with the tip end rim of the inner beam portion by an input of an attachment force in a direction to attach the molding to the run channel in the state of temporary attachment.

The invention discloses a sealing method and device used for improving the insulation performance of an annular force transducer. According to the sealing method and device, a pressure higher than thepressure required by a service environmental is applied from the outside to fill sealant bubbles of the transducer with a liquid insulating medium, the liquid insulating medium is retained in the sealant bubbles to achieve the effect of a one-way valve so as to prevent water from entering a channel of the transducer, and thus, the sealing requirement of the transducer in special environments is met. The sealing device comprises a pressure vessel. The pressure vessel is provided with an upper cover. The upper cover is clamped on the pressure vessel in a sealing mode through a clamping device.The liquid insulating medium is contained in the pressure vessel. The upper cover is provided with a pressure port. The pressure port communicates with an inner cavity of the pressure vessel. All sealant gaps of the transducer are filled with the liquid insulating medium under the effect of the pressure applied from the outside, so that the insulation performance of the transducer is improved. Thus, the sealing requirement of the transducer in special environments is met, normal work of the transducer under a certain water pressure can be ensured, and the application range of the transducer iswidened.

The invention provides a large flap valve water gate rubber sealing part and a preparation method thereof and belongs to the technical field of sealing materials. The rubber sealing part is wholly in a strip shape. The section of the rubber sealing part is formed by compounding a lower-layer sealing part body located on one side of the rubber sealing part and an upper-layer sealing part body located on the other side of the rubber sealing part. The Shore hardness of the lower-layer sealing part body is larger than that of the upper-layer sealing part body. The elongation at break of the lower-layer sealing part body is smaller than that of the upper-layer sealing part body. By means of a double-working-face type design structure, two working faces achieve a good buffer effect when a flap valve falls and achieve a good sealing effect in a work state.

The invention discloses a sealed exhaust gasket with a semicircular tappet hole. The sealed exhaust gasket with the semicircular tappet hole comprises a gasket body, wherein a plurality of exhaust holes are formed in the gasket body side by side; a polytetrafluoroethylene coating is arranged on the inner wall of each exhaust hole; an upper positioning groove and a lower positioning groove are respectively formed in the two ends of the gasket body transversely; the lower edge of the gasket body between adjacent two exhaust holes extends outwards and is provided with a bulge; a mounting hole is formed in the bulge; the middle part of the front edge of the gasket body extends outwards and is provided with a semicircular bulge; the semicircular tappet hole is formed in the semicircular bulge. According to the sealed exhaust gasket with the semicircular tappet hole, the tappet hole is novel in design; the positioning grooves achieve the effects of positioning and stabilizing; the polytetrafluoroethylene coatings achieve the effects of sealing and resisting abrasion; therefore, the service life of the gasket is favorably prolonged.

The invention discloses a ultrasonic-wave dynamic sealing device and method. The device comprises a sealing body and a sealing cover, wherein the sealing body comprises an acoustical lens, matching layers, an acoustoelectric chip tape and a backing. The acoustical lens is arranged on the periphery of a rotating shaft to be sealed, one or multiple matching layers cling to the outer side of the acoustical lens, and the acoustoelectric chip tape clings to the outer sides of the matching layers. The backing clings to the periphery of the acoustoelectric chip tape, and the outer side of the backingis connected with the sealing cover. The sealing device adopts non-contact seal, so that the wear and consumption of the sealing device is reduced. The sealing device is convenient in structural assembly, has low cost and has good adaptability under extreme working conditions.