Abstract: A coupling structure for an antenna device including a housing, which retains an antenna element for transmitting or receiving a communication signal, and a wire harness, which extends out of the housing. The coupling structure includes a coupling member that couples the wire harness to a conductor when coupling the housing to a coupling location.

Abstract: A transmitter device that repeatedly transmits an identical frame includes a circuitry that generates the frame and transmits the frame a plurality of times. The frame includes marking areas that divide the frame into a plurality of frame segments having different lengths. The marking area is formed in the frame by part of the frame and is distinguishable from other parts of the frame. The marking area does not change data content transmitted by the frame. The frame segments obtained from the identical frame that is repeatedly transmitted by the circuitry are combined to reconstruct a complete frame identical to the frame transmitted by the transmitter device.

Abstract: An antenna device includes an antenna. The antenna includes a plurality of plate-like legs, coupled to a base plate, and a plurality of plate-like arms, supported by the legs. Adjacent ones of the arms are continuous with each other. At least two of the legs have thicknesses in different thickness-wise directions.

Abstract: A communication method transmits a detection signal including a valve ID and detection information, receives the detection signal, performs error detection on the valve ID and detection information, and uses the valve ID and detection information when there is no error. The communication method generates third data corresponding to the detection information in accordance with a predetermined rule to increase redundancy of the detection information, generates computed data by performing an exclusive disjunction logic operation with the valve ID and third data, transmits the detection signal that includes the computed data and detection information, receives the detection signal, retrieves the third data corresponding to the detection information from the detection information, restores the valve ID by performing an exclusive disjunction logical operation with the computed data and the third data, and determines whether a restored valve ID conforms to a stored first data.

Abstract: A communication method transmits a detection signal including a valve ID, which is a fixed data string, and detection information, which is a variable data string, performs error detection on the received detection signal, and uses the detection information when there is no error. The communication method generates third data corresponding to the detection information in accordance with a predetermined rule to increase redundancy of the detection information, generates computed data by performing an exclusive disjunction logic operation with the valve ID and data including the detection information and the third data, transmits the detection signal that includes the computed data, receives the detection signal, restores the detection information and the third data by performing an exclusive disjunction logical operation with the received detection signal and the computed data, and determines whether the detection information conforms to the third data.

Abstract: A transmitter device that repeatedly transmits an identical frame includes a circuitry that generates the frame and transmits the frame a plurality of times. The frame includes marking areas that divide the frame into a plurality of frame segments having different lengths. The marking area is formed in the frame by part of the frame and is distinguishable from other parts of the frame. The marking area does not change data content transmitted by the frame. The frame segments obtained from the identical frame that is repeatedly transmitted by the circuitry are combined to reconstruct a complete frame identical to the frame transmitted by the transmitter device.

Abstract: A receiver includes an antenna unit that is able to receive a transmission signal from a subject alternately at different reception levels. A wave detection unit wave-detects the transmission signal to generate a detection signal. The detection signal has a signal level that becomes fixed in accordance with the transmission signal when the antenna unit receives the transmission signal at a reception level greater than or equal to a reception limit, and the signal level of the detection signal becomes non-fixed when the antenna unit receives the transmission signal at a reception level that is less than the reception limit. A correction unit removes, when the detection signal includes a fixed value session and a non-fixed value session, the non-fixed value session and corrects the signal level of the non-fixed value session to a level equivalent to the signal level of a fixed value session.

Abstract: A wireless communication system for a vehicle has a portable device that transmits a wireless signal and a vehicle-mounted device that receives the wireless signal from the portable device. Each time a switch in the portable device is turned on, the portable device updates a portable device rolling code and transmits a wireless signal including the portable device rolling code. The vehicle-mounted device receives the wireless signal through a receiver and authenticates the portable device through comparison between the portable device rolling code included in the wireless signal and the vehicle rolling code. The vehicle-mounted device locks or unlocks the vehicle door if the portable device is authenticated.

Abstract: A power transmission mechanism of a shaft and a hub, wherein a shaft tooth part having a plurality of linear spline teeth is formed at the end part of the shaft and a hub tooth part having a plurality of linear spline teeth fitted to the end part of the shaft is formed in the inner peripheral surface of a shaft hole in the hub. A first step part is formed by swelling the shaft tooth part toward the hub tooth part from a point (P1) horizontally moved from the center point (P0) of the shaft tooth part to a shaft shank side. On the ridge part side of the hub tooth part, a point is set at a position offset from the point (P1) horizontally to the opposite side of the shaft shank, and a second step part increased in a diameter from the point (P2) in the radial outer direction is formed.

Abstract: A power transmission mechanism of a shaft and a hub, wherein a shaft tooth part comprises a ridge part formed of a crowning with varied tooth thickness, and a hub tooth part comprises a ridge part having tooth thickness formed in a specified linear shape and having an inner diameter varying from the end part thereof to a shaft shank side. A first step part swelling to the hub tooth part is formed in the bottom part of the shaft tooth part, and a second step part recessed in a direction opposite to the shaft tooth part is formed in the ridge part of the hub tooth part. The start point of the first step part and the start point of the second step part are set at positions offset by a specified distance from each other.

Abstract: A surface modifying jig of an engine valve comprising a substantially circular ring portion for holding the valve head of an engine valve, a head holding portion having a diameter decreasing gradually downward from the inner circumferential side of the ring portion, and a stem holding portion formed below the head holding portion with a substantially constant diameter. When plasma nitriding is performed, the valve head comes into annular line contact with the ring portion and being held by the head holding portion while kept in annular plane contact therewith, and a valve stem is held by the stem holding portion while kept in annular plane contact therewith.

Abstract: A coupling structure for an antenna device including a housing, which retains an antenna element for transmitting or receiving a communication signal, and a wire harness, which extends out of the housing. The coupling structure includes a coupling member that couples the wire harness to a conductor when coupling the housing to a coupling location.

Abstract: An antenna device includes an antenna element, a wireless circuit, and electronic circuit, a substrate, a conductor, and a stub. The antenna element transmits or receives a communication signal. The wireless circuit is connected to the antenna element. The electronic circuit differs from the wireless circuit. The wireless circuit and electronic circuit are arranged in positional isolation on the substrate. The conductor is connected to the substrate to connect the antenna device to another device. The stub is arranged in a substrate part in which the wireless circuit is located. The stub has a pattern length that causes resonance at one fourth of a wavelength of the communication signal.

Abstract: A bearing device for a drive wheel having a knuckle member surrounding a part of a cup part through a clearance. An annular first seal member is disposed between the knuckle member and an outer ring member. An opening part is formed between the peripheral edge part of the knuckle member and the large diameter end part of a joint boot. A recessed part formed in the first seal member is installed to be opened toward the joint boot.

Abstract: The surface of a pre-molded article made of SKH51 (Fe-based alloy) is coated with a powder of Al, Cr and the like. The coating may be performed by applying a coating agent which is prepared by dispersing the powder in an organic solvent. The coating agent may contain a reducing agent. After coating, the pre-molded article is subjected to heat treatment to form a carbonized product of the metal. The pre-molded article may be further treated with nitrogen, thereby forming a layered Fe-based alloy which has a diffusion layer which is formed by the diffusion of the carbonized product, a nitrided product and AIN in the base material. Subsequently, the article may be subjected to finishing process to give a punch having a predetermined shape for use in a hot-roll forging process.

Abstract: A constant velocity joint, wherein all of those rolling elements excluding a plurality of rolling elements are divided into a plurality of rolling element groups and arranged along the inner diameter part of a roller member. The excluded plurality of rolling elements are dispersed in first to third cam grooves at intervals in the circumferential direction. When the rolling elements are pressed in the radial outer direction by the first to third pressing faces of a cam rotating in the arrow A direction, they are simultaneously press-fitted into first to third clearances between the rolling elements from the side of the inner diameter part of the roller member.

Abstract: A constant velocity joint, wherein all rolling elements annularly held by a tool are inserted into an inner diameter part from one end opposite to the flange part of a roller member along the axis of the inner diameter part of the roller member or the rolling elements remaining after one rolling element is removed from all rolling elements are charged into the inner diameter part and the removed one rolling element is inserted into a clearance between the rolling elements from the other end along the axis of the inner diameter part. After all rolling elements are fitted into the inner diameter part of the rolling member, a snap ring is fitted into an annular groove formed at the end part of the inner diameter part on the opposite side of the flange part to hold the rolling elements between the flange part and the snap ring.

Abstract: A shaft tooth section has a mountain section of a twisted shape crossing the axis of a shaft (mountain section of hub tooth section). The hub tooth section has the mountain section of a linear shape having a constant tooth thickness, and the inner diameter of the mountain section varies from an end section toward the shaft shank side. A first step expanding toward the hub tooth section side is formed in a valley section of the shaft tooth section. A second step recessed toward the opposite side of the shaft tooth section is formed in the mountain section of the hub tooth section. The start point (P1) of the first step and the start point (P2) of the second step are set at the positions separated by a predetermined distance (L4).

Abstract: A constant velocity joint, wherein all of those rolling elements excluding a plurality of rolling elements are divided into a plurality of rolling element groups and arranged along the inner diameter part of a roller member. The excluded plurality of rolling elements are dispersed in first to third cam grooves at intervals in the circumferential direction. When the rolling elements are pressed in the radial outer direction by the first to third pressing faces of a cam rotating in the arrow A direction, they are simultaneously press-fitted into first to third clearances between the rolling elements from the side of the inner diameter part of the roller member.

Abstract: A cylinder sleeve for being inserted in a cylinder bore defined in a block body of a cylinder block for an internal combustion engine. The cylinder bore includes a first annular recess and a second annular recess, and projecting walls. The cylinder sleeve comprises a hollow cylindrical body that is inserted into the cylinder block with at least part of an outer circumferential wall thereof adjacent to an inner circumferential wall of the projecting walls of the cylinder block, a larger-diameter portion projecting diametrally outwardly from an upper end of the outer circumferential wall of the hollow cylindrical body, a step disposed on an outer circumferential wall of said larger-diameter portion, by which the larger-diameter portions of adjacent cylinder sleeves are stacked, and a reduced-diameter portion provided by reducing a diameter of an inner circumferential wall of said hollow cylindrical body.