Abstract: A longitudinally-endless gasket mounted into a groove portion formed in one of members to provide sealing between this one member and another of the members when they are fastened to each other. The gasket has a sectional shape corresponding to a sectional shape of the groove portion with a ratio (H/W) between a height (H) and a width (W) of the sectional shape being 0.8 to 5.0. The gasket is provided with a plurality of large projecting portions at intervals of 30 to 100 mm and a plurality of small projecting portions at intervals of 5 to 15 mm in a longitudinal direction of the gasket. A width (R2) of each large projecting portion is larger than a width (X) of the groove portion by 0.01 to 0.9 mm. A width (R1) of each small projecting portion is smaller than the width (X) of the groove portion by 0.01 to 0.6 mm. A filling rate of the groove portion by the gasket when the members are fastened to each other is 80 to 100%.

Abstract: A gasket embedding an ion sensor 5 used for sealing a cylinder head to a cylinder block of an engine which is intervened under pressure between the cylinder head and the cylinder block, the gasket having a detection function of the condition in a combustion chamber. The gasket comprises a metal sheet in which a bore seal is formed at a ring-like bead structure and of an insulation seal layer coating at least the upper surface and the lower surface of the metal sheet so as to include the bead structure. An ionic current detection electrode is formed so as to project into the combustion chamber from the insulation seal layer and further a lug projecting outside from the periphery of the insulation seal layer is served as an ionic current introduction electrode of the sensor.

Abstract: A magnetizing apparatus for tone wheel, comprising a ring-like magnetizing yoke provided with plural wire inserting grooves at a space in its radial direction, and a wire fixed to the magnetizing yoke by sequentially inserting in the grooves, the wire being inserted into each of the grooves adjacent in a manner that it is disposed by turn in and out side of the wheel. The groove is formed as a bent groove comprised of a first groove provided on a ring-like plane of the magnetizing yoke in its radial direction and of a second groove communicating with the first groove and formed on the peripheral face of the magnetizing yoke.

Abstract: A seal with integrated sealing and rotation measuring capabilities includes a first slinger having an L-shaped cross section and is adapted to be fixed to a rotational bearing element of a bearing assembly, the first slinger including a first cylindrical portion extending axially and a first flanged portion extending radially from the first cylindrical portion. A seal ring is arranged axially inward from the first slinger and is adapted to be secured to a non-rotational bearing element, and the seal ring has elastic seal lips having respective tips adapted to make sliding contact with the side of the first slinger facing the seal ring. A second slinger has an L-shaped cross section arranged axially inward from the said seal ring and is adapted to be fixed to the rotational bearing element. The second slinger includes a second cylindrical portion extending axially and a second flanged portion extending radially from the second cylindrical portion.

Abstract: A cylinder head gasket for sealing between a cylinder block and a cylinder head, composed of a composite base plate, the composite base plate comprising a core material plate and a compound layer formed on the front and back surfaces of the core material plate, the compound layer being formed by coating compound materials which contain a rubber and a fiber material. The cylinder head gasket is comprised of an annular groove which is formed by pressing the corresponding region around the cylinder bore of the compound layer, and a bead projecting from the surface of the compound layer which is formed by inserting the rubber material into the annular groove.

Abstract: A rotor for a rotation sensor mounted on a bearing unit for a wheel on an automotive vehicle used to detect the number of revolutions of the wheel includes a reinforcing ring (2) secured to a radially outside rotational part or element of the bearing unit. A cylindrical multi-pole magnet (3) extends in the axial direction and is arranged on the radial outside of the reinforcing ring (2). A nonmagnetic cover ring (4) is arranged on the radial outside of the cylindrical multi-pole magnet (3) and covers the radial outer surface of the cylindrical multi-pole magnet (3).

Abstract: A production method of a water jacket spacer for use in a cylinder block with a water jacket formed around plural cylinder bores. The method comprises the fist step of integrally forming a tubular spacer body with a peripheral wall and a connecting bridge by way of synthetic resin molding so that corresponding regions of the peripheral wall are connected to each other via the connecting bridge, and the second step of cooling the tubular spacer body, with the connecting bridge fixed thereto, to prevent deformation of the tubular spacer body during the cooling process, and the third step of removing the connecting bridge from the tubular spacer body.

Abstract: A multifunctional gasket for sealing a gap between two objects by being intervened therebetween, comprising a first base plate and a second base plate including a metal base plate, which is integrally formed thereon. The first base plate comprises a conductive metal base plate layer formed with first and second projecting portions and an opening portion corresponding to a cavity of said two objects, insulation layers integrally formed on both upper and lower surfaces of the conductive metal base plate layer, except for the first and second projecting portions as well as for the opening portion, and microseal coating layers coated on upper and lower surfaces of said insulation layers, whereas the second base plate is provided around the opening portion with an annular bead structure which is formed by being partially bent itself. The gasket is used such that the first projecting portion thrusts toward the opening portion, while the second projecting portion is exposed its outside.

Abstract: A pulser ring and a second seal ring are separately formed. When a multipolar magnetic rotor of the pulser ring is bonded to an outer circumferential face of an outer cylindrical portion of an annular core portion, the multipolar magnetic rotor is opposed to a magnetic sensor in the radial direction. Due to the above structure, the multipolar magnetic rotor can be strongly supported by an outer cylindrical portion of the annular core portion. Therefore, even when a rotary centrifugal force is given to the multipolar magnetic rotor, it can not be swung in the radial direction. Accordingly, an interval of the multipolar magnetic rotor and the magnetic sensor in the radial direction, which are opposed to each other, can be maintained constant irrespective of an intensity of the centrifugal force.

Abstract: A multifunctional gasket intervened between two objects including a space to be sealed comprises a conductive metal base plate layer, an insulation layer integrally laminated at the upper and lower surfaces of the conductive metal base plate layer, and a microseal coating layer coated on the outer surface of the insulation layer. An annular bead structure is formed around an opening corresponding to the space, and when the gasket is intervened between the two objects to be integrated, one end of the conductive metal base plate layer faces the inside of the space and the other end thereof is exposed outside.

Abstract: A radio wave absorber is provided which can be produced at a low cost compared to the case of using silicon carbide fiber and which is also superior in radio wave absorption property in 76 GHz band (75-77 GHz frequency band). The radio wave absorber is produced by arranging a radio wave absorbing layer onto the surface of a metal body. The radio wave absorbing layer is made of a radio wave absorbing material containing silicon carbide powder dispersed in matrix resin. Average particle diameter of the silicon carbide powder is 4-40 ?m. Silicon carbide powder content in the radio wave absorbing material is 15-45 volume %. Thickness of the radio wave absorbing layer is adjusted so that reflection attenuation of not less than 10 dB is provided in 76 GHz band.

Abstract: Tone wheel testing apparatus and the test method using the apparatus are disclosed. Tone wheel testing apparatus comprising a surface adjusting means for holding in the horizontal position an annular object to be tested to which a tone wheel is attached, the means comprising a pair of pressing members between which the object is held, and the one of the pressing members having a reference surface with which the tone wheel is contacted in order to make the tone wheel align in the rotary axis direction of the object, a rotatable chucking means for seizing the object so as to make the center of the object align with its rotary center when the object is held by the surface adjusting means, and a magnetic testing sensor disposed adjacent to the tone wheel of the object so as to face each other.

Abstract: An encoder-equipped seal mounted on a wheel bearing unit on an automotive vehicle includes an elastic element and a reinforcing ring for sealing said wheel bearing unit and for detecting the number of revolutions of the wheel. The encoder-equipped seal further includes a first ring element and a second ring element, wherein the first ring element includes a first reinforcing ring, a first flanged portion and a magnetic attached to the first flanged portion of the first reinforcing ring, and wherein the second ring element includes a second reinforcing ring having a second flanged portion, and a seal lip arranged radially on the circumferential edge of the second flanged portion of the second reinforcing ring. The first ring element and the second ring element are united into one unit by allowing one to engage the other in such a manner that the first ring element is located axially outwardly of the wheel bearing unit and the second ring element is located axially inwardly of the wheel bearing unit.

Abstract: A magnetic encoder for use in a vehicle axle for generating pulse code by magnetic force. A magnetic ring is attached with an adhesive to a reinforcing ring fixed on the vehicle axle and then S and N poles are alternately magnetized thereon in a circumferential manner. Further the edge of the reinforcing ring is folded to fix the magnetic ring by caulking into the reinforcing ring.

Abstract: A multifunctional gasket intervened between two objects including a space to be sealed comprises a conductive metal base plate layer, an insulation layer integrally laminated at the upper and lower surfaces of the conductive metal base plate layer, and a microseal coating layer coated on the outer surface of the insulation layer. An annular bead structure is formed around an opening corresponding to the space, and when the gasket is intervened between the two objects to be integrated, one end of the conductive metal base plate layer faces the inside of the space and the other end thereof is exposed outside.

Abstract: An elastic gasket is mounted to an annular groove on a seal surface of a cover member and used for sealing between the cover member and a block member closely attached to the seal surface. A transverse width of a cross section in a leading end side portion is smaller than a transverse width of a cross section in a bottom surface side portion continuously extending from a bottom surface side opposing the leading end side of the leading end side portion to a bottom surface side of the gasket. Each of the transverse width of the cross section in the leading end side portion and the bottom surface side portion has one magnitude all along a longitudinal direction thereof. A cross section of a transition region from the bottom surface side portion to the leading end side portion is in a step shape having a level difference.

Abstract: A mount construction for a bearing seal is capable of easily and surely installing the bearing seal in a bearing and, after installation, developing a stable seal performance by suppressing an extracting force. The bearing seal, formed by disposing an elastic member having a lip part on one side face of a reinforcement ring, is press-fitted into a ring body or radially reduced ring body in a state where the lip part is bent in a direction away from the outer peripheral edge of the reinforcement ring on the elastic member side of the bearing seal. While maintaining this state, the bearing seal is extruded from the inside of the ring body or the radially reduce ring into the bearing with care so that the lip part is not caught between the reinforcement ring and the bearing is installed on the bearing.

Abstract: A method of manufacturing a magnetic rubber ring comprises: providing an unvulcanized rubber containing rubber materials and magnetic powers; using an extruding machine to extrude the unvulcanized rubber into a rubber band having a nearly round cross section; cutting the rubber band into a strip of rubber band of a predetermined length; forming a rubber band ring by joining opposite ends of the strip of rubber band together, wherein the opposite ends of the strip of rubber band have respective meeting slanted faces cut at a predetermined angle such that a joint of the rubber band ring obtained by joining the opposite ends of the strip of rubber band become thinner in a direction of compression when the rubber band ring is compressed in a direction of its center line; and compressing the rubber band ring under applied heating in the direction of the center line.

Abstract: The oil pan structure of the present invention comprises an oil pan separator 3, disposed within an oil pan 2, for separating a main chamber provided with a suction port disposed therewithin and a sub chamber provided with no suction port from each other, the oil pan separator 3 having a recess forming the main chamber, the main chamber communicating with the inside of an engine block 1, the recess being formed with communication holes 3c, 3d for communicating the main and sub chambers to each other. The sub chamber is formed so as to surround the main chamber as a whole, whereas the outer face of the bottom part of the oil pan separator 3 and the inner face of the bottom part of the oil pan 2 are not in contact with each other. Therefore, raising the temperature of engine oil within the main chamber earlier can lubricate the engine more effectively.

Abstract: An unvulcanized raw rubber is provided, to which magnetic ferrite powder is added. A resulting mixture composed of the unvulcanized raw rubber and magnetic ferrite powder is passed through a rolling machine or an extruding machine such that the mixture is formed into a sheet blank that contains the magnetic ferrite powder aligned regularly in a particular orientation. Alternatively, the resulting mixture may be first passed through an extruding machine and then through a rolling machine. The sheet blank is then stamped across a planar direction such that a ring-like sheet is formed. The ring-like sheet, along with a supplemental ring, is placed inside a metal mold, where the ring-like sheet and supplemental ring are compressed in an axial direction, while applying heat thereto, so that the ring-like sheet is vulcanized and joined to the supplemental ring. Finally, the vulcanized ring-like sheet is magnetized so that S poles and N poles appear alternately around its circumference.