YUTAKA GIKEN CO., LTD. Patent applications |
Patent application number | Title | Published |
20150377319 | DAMPER WITH TORQUE LIMITER - A damper with a torque limiter is provided in which a torque limiter is formed from an annular limiter housing formed on a mass ring, a friction plate frictionally engaging with the limiter housing a pressure-applying plate that frictionally engages with the friction plate and that is linked to the mass ring, and a limiter spring urging the pressure-applying plate toward the friction plate side, a spring holder is formed from a pair of first and second holder plates that oppose each other to define a damper housing and that are joined to each other by a rivet, and the friction plate is formed integrally with the second holder plate. Thus, a rivet providing a link between a pair of holder plates forming a spring holder does not carry the burden of torque transmission, enabling the diameter of the rivet to be smaller and thereby reducing weight and cost. | 12-31-2015 |
20140291067 | EXHAUST SILENCING DEVICE - An exhaust silencing device connected to an exhaust system of an engine is provided in which two outlet pipes that have at an upstream end thereof an opening portion opening within the silencer main body and that discharge exhaust gas within the silencer main body to an outside thereof are disposed within the silencer main body along a bottom thereof so that the distances thereof from the lowest part of the bottom are substantially equal, and the opening portion of one outlet pipe is directed further toward the bottom of the silencer main body than is the opening portion of the other outlet pipe. Such exhaust silencing device efficiently discharges to the outside the condensed water building up within the silencer main body so as not to impair an effect in reducing exhaust resistance by providing two outlet pipes that guide the exhaust gas to the outside. | 10-02-2014 |
20140123637 | TORQUE CONVERTER STATOR STRUCTURE - Among first and second stators of a torque converter supported on a fixed part by a one-way clutch corresponding to the stators, the number of second stator blades of the second stator on the downstream side in the direction of flow of oil is larger than the number of first blades of the first stator on the upstream side, and the maximum value t | 05-08-2014 |
20130025985 | Method of Manufacturing Brake Disc and Brake Disc - In a method of manufacturing a brake disc having an outer peripheral shape of projections-recesses repetition in which a radial projection and a radial recess are alternately repeated in the circumferential direction of the brake disc, there is provided a method in which a curved face portion can be formed uniformly over the entire outer peripheral edge portion of the disc main body so as to eliminate the step of chamfering for removing burrs and which is superior in productivity. A disc main body whose outer peripheral shape is projections-recesses repetition is half-blanked from one of plate thickness directions of a sheet material. Thereafter, the disc main body is blanked from the other of the plate thickness directions of the sheet material W. At an outer peripheral edge portion of each surface in said one and the other of the plate thickness directions of the disc main body manufactured by this method, there is formed a curved face portion, due to sagging, on the disc main body | 01-31-2013 |
20120291280 | MANUFACTURING METHOD OF IMPELLER FOR FLUID TRANSMITTING DEVICE - In a manufacturing method of an impeller for a fluid transmitting device, multiple guide grooves aligned in a peripheral direction to allow communication between adjacent ones of multiple positioning holes are provided in a concave inner surface of a core in advance; and in a step of melting a brazing material and causing the molten brazing material to penetrate into gaps between coupling pieces and positioning holes that are fitted to each other and further into gaps between the core and the blades, the molten brazing material is guided to the positioning holes through the multiple guide grooves. Accordingly, the step allows the molten brazing material to be efficiently guided to the gaps between the coupling pieces and positioning holes, thereby improving the yield of the brazing material and preventing an influence of a residual brazing material over the rotational balance of the impeller. | 11-22-2012 |
20120285782 | FLUID TRANSMITTING DEVICE WITH LOCK-UP CLUTCH - In a fluid transmitting device with a lock-up clutch, each second transmitting claw is formed of: a base portion having a long side arranged in a peripheral direction of a turbine impeller and a short side arranged axially of the turbine impeller; and a claw portion protruding from an intermediate portion of one of long-side portions of the base portion and being inserted between adjacent damper springs, and each short-side portion of the base portion is fixed to the turbine impeller through a weld. A long-side portion of the base portion not welded to the turbine impeller includes a cutout, facilitating bend of the long-side portion when transmitting torque through the second transmitting claw, at opposite sides of the claw portion. This improves engine output performance by relaxing stress concentration at spots where the second claws are welded to a turbine impeller without increasing the thicknesses of the claws. | 11-15-2012 |
20120055734 | EXHAUST FLOW CONTROL DEVICE FOR EXHAUST MUFFLER - An exhaust flow control valve includes: a valve plate hinged to a downstream exhaust pipe to be pivotable, inside the pipe, between a fully closed position where a short-cut hole is closed and a fully open position where the short-cut hole is opened, the valve plate having a tip end directed toward a downstream side of the downstream exhaust pipe when at the fully open position; a spring receiving member provided to the downstream exhaust pipe to traverse the short-cut hole; and a valve spring having one end portion fastened to a tip end portion, which is located on the downstream side of the downstream exhaust pipe with respect to the spring receiving member, of the valve plate, and having an opposite end side being slidably in pressure contact with the spring receiving member, thereby generating a repulsive force to bias the valve plate toward the fully closed position. | 03-08-2012 |
20110244967 | FLYWHEEL DEVICE - A flywheel device includes a mass-side rotor including a mass ring and a pair of holder plates connected to both sides of the mass ring. The mass-side rotor is connected to a crankshaft with a drive plate therebetween. Between the mass-side rotor and the drive plate, a positioning apparatus for positioning those coaxially with each other is provided. The positioning apparatus includes: an annular positioning protrusion which is press formed in at least one of the pair of holder plates to project laterally outward therefrom, and which is disposed coaxially with the mass-side rotor; and a positioning recessed portion which is press formed in the drive plate coaxially with the crankshaft, and which is fitted to the positioning protrusion. Accordingly, it is possible to enable coaxial positioning of the mass-side rotor and the drive plate without performing burdensome machining on the mass ring for forming a positioning apparatus. | 10-06-2011 |
20100224349 | HEAT EXCHANGE TUBE - A heat exchange tube is constructed by forming, on a cylindrical tube peripheral wall, a plurality of projecting portions which project to an inside of the tube peripheral wall, and which are formed by pushing. The plurality of projecting portions are formed, respectively, into conical shapes across a tube axis, and are arranged along virtual spirals on the tube peripheral wall. Accordingly, it is possible to provide a heat exchange tube which facilitates formation of a plurality of projecting portions with the thickness hardly changed and without formation of protruded portions, and which is capable of contributing to enhancement of heat exchanging efficiency. | 09-09-2010 |
20100122682 | EXHAUST COMPONENT COVER - A lightweight exhaust component cover having a small number of components is disclosed. In the exhaust component cover, an internal plate is formed by bending part of a single plate at both ends, and the internal plate is joined to the inside surface of an external plate. | 05-20-2010 |
20100013168 | CHUCKING DEVICE FOR USE IN MACHINING EXHAUST GAS PURIFYING SYSTEM - A chucking device for use when an outer peripheral end part of a semi-finished product having a pillar-shaped catalyst wrapped in a mat and housed in a cylinder is spin-processed using a plurality of spinning rollers. An outer peripheral surface of the semi-finished product is chucked using a plurality of pressing pieces. Each of the pressing pieces has a contact surface for touching the cylinder of the semi-finished product, and a pair of chamfers extending radially outward from either end of the contact surface. | 01-21-2010 |
20090000286 | ASSEMBLY FOR FITTING TOGETHER EXHAUST PIPES IN MULTI-CYLINDER ENGINE - An assembly in which a plurality of exhaust pipes in a multi-cylinder engine is fitted together in a single unit and in which exhaust gases do not create eddy currents or turbulence in the areas where the pipes are fitted together. The configuration is designed such that, to prevent pockets from forming between a skirt and a plurality of sockets formed in a perforated cap, parts of each of the sockets and part of the skirt are arranged linearly relative to each other so as not to form an eddy current. | 01-01-2009 |
20080264741 | Floating Type Disk Brake - A floating type disc brake “A” used for a vehicle such as a motorcycle comprising a braking rotor | 10-30-2008 |