Abstract: Ridge and groove sections (24) having first slope surfaces (24a) and second slope surfaces (24b) are formed at a predetermined circumferential pitch on at least either of a slide seal surface (21) and an atmosphere-side conical surface (23) of a seal lip (2), the first slope surfaces (24a) slope at a gentle gradient in the direction of narrowing gaps between the first slope surfaces (24a) and the outer peripheral surface of a rotation body (10) toward the rotation direction of the rotation body (10), the second slope surfaces (24b) rise at a steeper gradient than the first slope surface (24a) from narrow gap portions, and a part of sealed fluid introduced into the gaps enters like a wedge toward the narrow gap portions as the rotation body (10) rotates, to generate dynamic pressure, and forms a thick fluid lubrication film to reduce slide resistance.

Abstract: A vacuum apparatus of rotary motion entry is disclosed, which comprises: a shaft sleeve, disposed on a cavity wall of a vacuum system; a rotary shaft, ensheathed by the shaft sleeve; and a transmission set, connected to the rotary shaft for driving the same; wherein, the rotary shaft is disposed passing through a hole formed on the base of the shaft sleeve while there are a first bearing, a second bearing, a sealing ring and a shaft seal being arranged separately inside the hole. Moreover, the shaft seal has a flake-like lip flange formed extending toward the center of the hole, that is capable of being extended away from the vacuum system by the inserting of the rotary shaft into the hole, and thereby, enabling the lip flange to engage with the rotary shaft tightly by the atmospheric pressure and thus isolating the outside world from the vacuum system.

Abstract: A sealing device has a sealing device main body (1), in which a seal lip (13) oriented to an in-machine (A) side slidably contacts with the outer peripheral surface of a rotating body (4), and a pumping device (2) having a helical groove (2a) which feeds fluid to the seal lip (13) side by rotation of the rotating body (4), the groove being formed in a surface opposed to the outer peripheral surface of the rotating body (4) to be positioned at the in-machine (A) side of the seal lip (13), and discharge flow passages (2b) which make a space (C) between the sealing device main body (1) and the pumping device (2) communicate with the in-machine (A) side, whereby sufficient lubricating oil can be supplied to a sliding portion of the seal lip and heat generation and the wear of the seal lip can be suppressed.

Abstract: A seal ring holder for membrane elements which is capable of attaining an increase in the area of membranes packed per element; and a membrane element using the seal ring holder, are provided.

Abstract: A dynamic seal provides for the return of captured lubricant to the lubricant side regardless of the direction of rotation between the seal and the shaft. The seal uses bi-directional pumping elements to facilitate the hydrodynamic pumping of the captured lubricant in response to relative rotation. The seal includes a valve portion that can change a pumping rate of particular pumping elements such that more lubricant is pumped toward the lubricant side than the non-lubricant side.

Abstract: The present cartridge seal assemblies pertain to rotary lip-type seals. In certain embodiments, a sealing member is constructed of a relatively hard material that increases the lifespan of the sealing member. The sealing member is energized with a canted-coil spring, which in some embodiments includes an adjustable spring force. The present embodiments enable control of sealing force to achieve an appropriate sealing force between the sealing member and the shaft based on factors such as temperature, pressure, rotary speed, properties of fluid media, etc. to achieve longer seal life.

Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.

Abstract: A sealing device (1) having an oil seal (10) mounted to non-rotatable housing (2) and also having a slinger (20) mounted to a rotating body (5) on the inner peripheral side of the oil seal (10) so as to be located on the axially outer side of the oil seal (10), the oil seal (10) having an oil-resistant seal lip (13) slidably in close contact with the outer peripheral surface of the rotating body (5), wherein a seal ring (30) axially opposed to the slinger (20) is provided outward of the oil-resistant seal lip (13), a gap (G3) being formed between the seal ring (30) and the slinger (20) so as to decrease to the outer diameter side. The construction prevents muddy water etc. from entering from the outside (A) into a slide section (S1) of the oil-resistant seal lip (13).

Abstract: A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal.

Abstract: A faucet includes a faucet body, a sleeve, a control valve, and a mounting seat. The control valve includes a control shaft, a stop gasket, a retaining member, a leakproof gasket, a sealing gasket, a first leakproof cap, a second leakproof cap, a control knob, and a restoring member. Thus, the sealing gasket, the leakproof gasket, the first leakproof cap and the second leakproof cap of the control valve are tightly and closely located between the control shaft and the through hole of the faucet body to seal the through hole so as to prevent the water from leaking from the through hole and to stabilize the water pressure in the faucet body.

Abstract: A fluid activated shaft bulkhead seal system includes an annular carrier fixed with respect to a bulkhead and about a shaft extending through the bulkhead and the annular carrier. The annular carrier supports a pair of lip seals each of which defines an outwardly facing pocket and a lip portion spaced from the shaft and a portion abutting the carrier. A foam body is disposed in the pocket of each lip seal. Each foam body includes a gel material configured to expand in the presence of fluid urging the lip portions of the lip seals into contact with the shaft to seal the annular carrier with respect to the shaft. An annular retainer is mated to each side of the annular carrier for retaining the foam body in the pocket of each lip seal.

Abstract: A packing and a sealing system capable of enhancing an accumulation avoiding function.

Abstract: The invention provides a seal for sealing between two members (1, 3) which are mutually movable so as to slide relative to each other. One of the members comprises a body (3) with a channel (2) formed therein. The channel (2) has a longitudinal axis and the other member (1) is receivable in the channel (2) so that the two members (1, 3) slide relative to each other in a direction parallel to the longitudinal axis. The first member (1) has at least one deformable plastics rib (4, 5, 6, 7, 8, 30, 34) formed on a surface thereof. The rib (4, 5, 6, 7, 8, 30, 34) faces the second member (3) and in use deforms on abutment with the wall of the channel (2) of the second member (3) to provide a seal between the two members (1, 3) when they are stationary or moving relative to one another. An endless plastics skirt (22) may be provided around the external surface of the first member (1) with the rib (4, 5, 6, 7, 8, 30, 34) being formed around the external surface of the skirt (22).

Abstract: A high-friction fluid seal used for high-friction sealing, comprising a fluid seal lip provided on the working fluid filling side to intercept a working fluid; and a dust lip provided on the working fluid non-filling side (the outer side) of the fluid seal lip to intercept dust coming from the outside, wherein the thickness of a working fluid film formed on the extension stroke by the dust lip is smaller than the thickness of a working fluid film formed on the extension stroke by the fluid seal lip.

Abstract: A pump adapted for coupling in a fluid circuit between a source of coating material and a dispensing device. The pump includes an operating member which extends through a pump housing to a location adjacent the fluid circuit. The passage of the operating member to a location adjacent the fluid circuit includes a seal system permit operation of the pump while reducing the likelihood of leakage of the coating material from the circuit out of the housing along the operating member. The seal system includes at least first and second seals defining between them a flushable seal chamber facing a pump chamber containing the coating material being pumped.

Abstract: A seal assembly and method for the manufacture thereof is provided. The seal assembly provides a dynamic fluid seal between a housing having a bore and a shaft having an outer running surface rotating within the bore. The seal assembly comprises a rigid carrier for supporting the seal assembly within the bore of the housing. A flexible member is mounted to the rigid carrier. The flexible member is formed from an elastomeric material that allows the flexible member to flex during use. A sealing element is retained by the flexible member about the outer running surface. The sealing element is formed from a non-polytetrafluoroethylene bearing grade plastic material having a hardness relatively greater than a hardness of the elastomeric material of the flexible member. The sealing element moves with the flexible member as the flexible member flexes. The sealing element extends along the outer running surface in a plurality of helically wound convolutions.

Abstract: An ring seal assembly includes a ring and a seal located within the ring. The ring has a proximal end including a major lip, a distal end including a minor lip, and a seal contacting region between the major lip and the minor lip. Additionally, the ring including an inner surface defining a central bore. Within the seal contacting region, the central bore has a radius that decreases along a direction extending from the minor lip to the major lip. The seal has a ring contacting outer portion and a shaft contacting inner portion. The ring contacting outer portion is shaped to be complementary to the inner surface of the seal contacting region of the ring. The shaft contacting inner portion is configured to contact a shaft placed within the central bore of the ring.

Abstract: Seal assemblies for sealing around a moveable shaft, such as rotary or reciprocating, or static, are described. The seal assemblies prevent the passage of lubricant or fluid from a relatively high pressure area on a first side of the seal to a relatively low pressure area on a second side of the seal. In some embodiments, these seals are energized by energizers, such as circular springs or canted springs, to keep the seal in contact with the moveable shaft. The seals have primary and secondary seals. The secondary seal provides initial moderate sealing against abrasive particles or contaminants to reduce the exposure and wear of the primary seal.

Abstract: In a U-cup based seal of a rod, the basic body of the U-cup 3 is recessed relative to a square cross-sectional shape in the region of a radially inner outer edge 18 on the low pressure side in order to obtain a space 17 between the U-cup 3 and the opening, i.e. the passage opening 16 of a sealing gap 15, leading into a rectangular groove 4 guiding the U-cup 3. This space 17 remains at least partially also upon pressurization such that the U-cup 3 complete remains in the groove 4 upon pressurization and is not extruded into the sealing gap 15. This considerably reduces wear of the U-cup 3. An inner surface 24 of the U-cup shows liquid dragging bore reliefs formed as recesses 25 in the inner surface 24 of the U-cup 3 for transferring hydraulic liquid, disposed on a surface of the translatory movable machine part 1, from a low-pressure side N of the U-cup to a high-pressure side H of the U-cup 3 upon translatory movement of the movable machine part 1.

Abstract: A sealing ring has a sealing element with at least one fastening part and at least one sealing part provided with a sealing edge. The sealing element is essentially of rotational symmetry. The sealing edge, at least over a portion of a circumference thereof, is positioned in a slanted position relative to a sealing ring axis at an angle different from a 90 degree angle, viewed in a projection onto an axial plane of the sealing ring. A support part is provided and the sealing edge is arranged on an inner side of the support part.

Abstract: A shaft seal that is in sliding contact with the outer surface of the shaft of an open type compressor or a fluid device driven by an external power source and seals the inside of the compressor or of the fluid device against the outside. At least a sliding section of the shaft seal, which sliding section is in sliding contact with the outer surface of the shaft, is made from a material into which a substance having a melting point in the range of 150-300° C. is added and uniformly dispersed. The shaft seal can improve its thermal resistance and abrasion resistance, can exhibit excellent durability, and is particularly suitable for compressors using a carbon dioxide refrigerant which are driven under high-temperature, high-pressure conditions.

Abstract: [Configuration] In a hermetic sealing device provided with a thread on an atmosphere side sliding surface of a sealing lip that is in sliding contact with a rotating shaft, the atmosphere side sliding surface of the sealing lip is formed into a large curve that passes a sealing lip tip and recedes from a surface of a component with which the lip is in sliding contact towards the atmosphere side. A thread with a triangular cross-section is formed connecting the lip tip to a projecting section of a predetermined height formed at a required position distant from the lip tip. A ridge line of a thread peak of the thread is formed linearly. A thread is formed on the atmosphere side sliding surface, configured such that the height of the thread peak gradually increases away from the lip tip. [Effect] Because the ridge line of the thread peak is linear, a space between the shaft and the sealing lip can be maintained.

Abstract: A sealing device having a dust filter, in which sliding torque due to the dust filter is reduced with dust sealing performance of the dust filter maintained at a high level. The sealing device is provided with a seal lip (12) mounted to a non-rotating housing (200) and made to be in slidable close contact with a rotation-side member (2), and the sealing device is also provided with the dust filter (16) located closer to the atmosphere (A) than the seal lip (12) and having an inner diameter section (16a) which is made to be in slidable close contact with the outer peripheral surface of the rotation-side member (2). Cutouts (16b) are formed at predetermined circumferential intervals in the inner diameter section (16a) of the dust filter (16), and the deepest sections of the cutouts (16b) have an appropriate allowance for fastening to the outer peripheral surface of the rotation-side member (2).

Abstract: A seal ring holder for membrane elements which is capable of attaining an increase in the area of membranes packed per element; and a membrane element using the seal ring holder, are provided.

Abstract: An encoder-equipped sealing device, that is, a sealing device that has an encoder incorporated therein is disclosed, which comprises a combination of seal elements, each of which includes an annular metal core having a substantially L-shaped cross section and including a cylindrical portion and a flange portion provided on one end of the cylindrical portion and extending in a direction perpendicular to a direction in which the cylindrical portion extends.

Abstract: Master cylinder of a hydraulic braking circuit, particularly for a motor vehicle, comprising a piston (2) sliding axially in a body (4) comprising an annular lip seal (51) produced by molding, and comprising an internal, dynamic sealing lip (14) surrounding the piston and connected by a curved surface (36) to a planar rear face (30) comprising radial passages which are defined by blocks formed as projections on the rear face of the seal, these blocks being separated from the curved surface (36).

Abstract: A compressor comprises: a cylinder with a compression space; a suction port and a discharge port which communicate with the compression space in the cylinder; a support member which closes an opening of the cylinder; a rotary shaft which is rotatably supported on the support member; a compression member whose one surface crossing an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and which is rotated and compresses a fluid to discharge the fluid via the discharge port; and a vane which is disposed between a suction port and the discharge port, abuts on one surface of the compression member and partitions the compression space in the cylinder into high and low pressure chambers.

Abstract: A valve assembly for sealing and control of a fluid, gas or dry material. The valve assembly includes a seal assembly having a hollow seal, a related valve body, and an actuator assembly. The valve body has a generally circular internal cavity with the seal assembly having a generally tubular solid wall defined tip having a flexible wall portion containing a seal element used to seal against both static and dynamic forces. An actuator assembly actuates the seal assembly. The seal assembly is situated coaxially within the valve internal cavity and thereby defines an internal fluid passageway within the valve body.

Abstract: There are provided a rotation introduction mechanism which transmits a rotating motion on the atmosphere side into vacuum, is arranged simply, has a low sliding resistance, and has a long life, a substrate transfer apparatus, a substrate transfer apparatus having a small pivot radius and generating a smaller amount of dusts, and a vacuum processing apparatus. A lubricant holding member is attached to a vacuum seal mechanism. The substrate transfer apparatus is arranged such that a first link mechanism includes a first arm and a fourth arm, a second link mechanism includes a second arm and a third arm, the first arm is fixedly attached to a first drive shaft, the first arm is fixedly attached to a second drive shaft, the third arm is rotatably attached to the first drive shaft, and the fourth arm is rotatably attached to the second drive shaft. The vacuum processing apparatus includes the substrate transfer apparatus.

Abstract: A riser seal cartridge for an irrigation sprinkler. The cartridge is formed of a rigid self support shell, and a sealing member formed of a resilient material covering the shell in areas which provide the seal. The sealing member includes a first portion which seals the top end of the sprinkler body, a second portion which seals an outer surface of the riser, a third portion which connects the first and second portions, and a fourth portion extending from the third seal portion which provides a seal for the support shell lower end portion. The first seal portion provides a high pressure seal to prevent leakage when the riser is in a fully extended position; and the second seal portion provides a low pressure seal during pressure build-up as the riser is extending.

Abstract: To enhance lubricating oil supply function, a sealing device (1) between a shaft hole (42) and a shaft (43) includes a sealing device body (11) having a tubular fixed section (12) fixed in the shaft hole (42) and a seal lip (14) slidably contacted with the periphery of the shaft (43) and an oil supply member (31) having a tubular fitting section (32) fitted to the inner periphery of the fixed section (12) and a flange-shaped oil supply section (33) extending radially inward from the fitting section (32), the oil supply section (33) is arranged at the sealed fluid side from the tip of the seal lip (14), and projecting guide sections (37) for colleting oil attached to the oil supply section (33) and dropping it onto the shaft are provided at positions above the shaft (43) on an inner peripheral edge of the oil supply section (33).

Abstract: A seal for a compressor for sealing a shaft includes a first seal part of a first material, a second seal part of a second material different from the first material, and a stiffening part. The second seal part is connected at least with a radially extending surface area to at least one of the other parts and the surface area of the second seal part opposite the aforementioned surface area is kept from making contact with the stiffening part. The first seal part is provided, toward the axial side, with a sealing lip which is adapted for sealing contact with the shaft, and the second seal part is made such that the radially inner area of the second seal part extends axially and is free from collision with the sealing lip when the seal is properly installed.

Abstract: A sealing device in which oil (O) is supplied by ejection to a sealing device body (3). In the sealing device, an increase in friction of a seal lip (33) caused by the pressure of the oil (O) is prevented, and effective lubrication by the oil (O) is promoted. The sealing device has the sealing device body (3) having the seal lip (33) slidably in intimate contact with the outer peripheral surface of a rotating shaft (2), an oil ejection opening (12) for ejecting the oil (O) toward a position on the outer peripheral side of the seal lip (33) of the sealing device body (3), and oil splashing means (4) for splashing the oil (O), ejected from the ejection opening (12), back to a portion near a sliding portion (S) of the seal lip (33).

Abstract: A sealing device that hermetically seals a gap between a first member and a second member that is reciprocally movable with respect to the first member. The sealing device seals liquid supplied into a pressurizing chamber surrounded by the first member and the second member. The sealing device includes a seal member that is attached to the second member. The seal member slides relative to the first member while being in contact with the first member. The seal member includes a base portion and a protruding portion. The protruding portion protrudes from the base portion toward the first member to separate the first member from the base portion. After the liquid is supplied into the pressurizing chamber to fill the pressurizing chamber with the liquid, the protruding portion elastically deforms to bring the base portion into close contact with the first member.

Abstract: A sealing device for sealing a first side against a second side of a machine part, wherein the sealing device has a sealing element which contacts a counter element. At least a part of the sealing element and/or at least a part of the counter element is coated with a layer consisting of or containing fullerene-like carbon nitride (FL-CNx), wherein an inter-layer of chromium (Cr) or aluminium (Al) or molybdenum (Mo) or titanium (Ti) or tungsten (W) or a diamond-like coating (DLC) or a metal-mix diamond-like coating (Me-DLC) is arranged between the surface of the sealing element and the layer consisting of or containing fullerene-like carbon nitride and/or between the surface of the counter element and the layer consisting of or containing fullerene-like carbon nitride.

Abstract: Sealing device (1) for a wheel hub group (2) which is connected to a differential device, and which is provided with a rolling contact bearing (3), the sealing device being provided with a first shield (6) which is shrink-fit onto an inner race (4) of the rolling contact bearing (3), and an encoder (7) which is integral with the first shield (6) in order to generate a signal for reading the functioning kinematic parameters of the wheel hub group (2), and is also provided with a second shield (8) which is shrink-fit onto an outer race (5) of the rolling contact bearing (3) in a position which is opposite to and which is also external to the inner shield; a static sealing element (12) is integral with the second shield (8), and is also arranged in contact with a containing box of the differential in order to define a watertight chamber (14) in order to provide a reading surface of a reading sensor (11) which can read the signal which is generated by the encoder itself.

Abstract: Seal assemblies are herein discussed. The seal assemblies can have a stiff backing ring supporting a seal ring, which is positioned adjacent an inner seal ring. In preferred embodiments, the inner seal ring is made from a material that enables the inner seal ring to absorb media particles in situ to change its particle density. This allows the seal assembly to form wearable surfaces on the fly to decrease wear on the seal ring.

Abstract: A top for a pop-up type irrigation sprinkler that utilizes a riser that pops up from a stationary sprinkler body in accordance with an embodiment to the present invention includes a cap which is threadedly attached to the sprinkler body; a co-molded seal positioned in a center of the cap with a riser opening in the center thereof, wherein the seal prevents water from leaking out of the sprinkler between the cap and the sprinkler body and between the seal and the riser.

Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).

Abstract: A blade seal comprising: a base; a tip; a first part formed from an elastomeric material which extends continuously from the base to the tip; and a second part formed from an elastomeric material mixed with conductive filler which extends continuously from the base to the tip. The blade seal is manufactured by compressing the first and second parts together; and curing one or both of the parts as they are compressed together.

Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).

Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).

Abstract: A seal is provided for sealing between an outer perimeter opening having upper and lower edges and an inner assembly having first and second members. The seal includes an outer perimeter seal including a reinforcing insert molded therein. The outer perimeter seal includes a first seal bead at a first axial end and a second seal bead at a second axial end. A flexible diaphragm portion extends radially inward from the outer perimeter seal. An inner perimeter seal is connected to a radially inner end of the flexible diaphragm portion. The inner perimeter seal includes a first seal bead on a first surface of the inner perimeter seal and a second seal bead on a second surface of the inner perimeter seal. The inner perimeter seal being adapted to be inserted between the first and second members of the inner assembly.

Abstract: A check seal (53) for discharging working oil scraped off a piston rod (3) by an oil lip (52b) into an oil pool (A) of a hydraulic shock absorber to an oil reservoir (R) is disposed on the outside of the oil pool (A). The check seal (53) comprises an annular seat surface (4d) and an annular lip (53a) seated resiliently on the seat surface (4d). The annular seat surface (4d) comprises an annular main rib (11) and an annular inner rib (12), both of which project toward the annular lip (53a), such that an annular groove (21) is formed between the main rib (11) and the inner rib (12). By providing a pressure introducing passage (12a) to introduce a pressure inside the inner rib (12) to the annular groove (21), the check seal (53) exhibits a high working oil discharging performance and a high working oil sealing performance.

Abstract: By providing a projection 24 at the root of a seal lip 22, the mechanical loss caused by the seal lip is reduced while restraining the turn-over of the seal lip 22, while maintaining a stable sealing performance by letting the first side surface 24a or the second side surface 24b of this projection 24 exhibit a suction function of returning the fluid that has leaked from the lip tip end of the seal lip 22 to the sealing fluid side O when the shaft and the seal lip 22 are relatively rotated.

Abstract: A seal arrangement has a mechanical shaft seal with an annular counter member and a slide ring each having sliding surfaces that rest against one another and define sealing gap. The sealing gap has at least one sealing lip correlated therewith. The sealing lip is arranged downstream or upstream of the sealing gap.

Abstract: A reduction gear includes a gear case, a plurality of shafts in the gear case, a fixed member, an axially movable member, and a friction applying member. The friction applying member is interposed between the fixed member and the axially movable member, to apply a frictional force to at least one of the plurality of shafts in a radial direction of the shaft.

Abstract: A sealing ring has a sealing element with at least one fastening part and at least one sealing part provided with a sealing edge. The sealing element is essentially of rotational symmetry. The sealing edge, at least over a portion of a circumference thereof, is positioned in a slanted position relative to a seal axis at an angle different from a 90 degree angle, viewed in a projection onto an axial plane of the sealing ring.

Abstract: A compressor having a compression element with a cylinder in which a compression space is constituted, a suction port and a discharge port which communicate with the compression space in the cylinder, a support member which closes an opening on the cylinder and a rotary shaft which is rotatably supported by a main bearing as a bearing formed on the support member. A compression member, whose one surface crosses an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and is disposed in the cylinder to be rotated by the rotary shaft, compresses a fluid sucked from the suction port to discharge the fluid via the discharge port. A vane which is disposed between the suction port and the discharge port to abut on one surface of the compression member partitions the compression space in the cylinder into a low pressure chamber and high pressure chamber.

Abstract: An encoder-equipped sealing device includes two seal members arranged to face opposite each other and each having a reinforcing ring with an L-shaped cross section. Each of the reinforcing rings has a cylindrical portion and a flange portion extending from one end of the cylindrical portion in a direction perpendicular to the cylindrical portion. One seal member includes an elastic seal formed in such a manner as to be supported by the reinforcing ring of this seal member, with the elastic seal extending toward the other seal member such that a seal portion is formed between the elastic seal and the other seal member. The other seal member includes an encoder on a side of the flange portion of the other seal member that is opposite a side facing the one seal member. The one seal member includes an elastic element formed in such a manner as to be supported by the flange portion of this seal member.