| Central Motor Wheel Co., Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120086263 | AUTOMOTIVE WHEEL - An automotive wheel that can prevent deformation of a back side opening edge of a wheel rim in a radial direction and reduce the weight of the wheel rim is proposed. | 04-12-2012 |
| 20120056360 | Process for producing metal composite material - Producing a metal composite material by mixing hydrated ceramic particles, having water of crystallization that is bound within fine pores which have an average pore diameter of 1 nm or more and 80 nm or less, with a reinforcing material, the resulting mixture being sintered to form a preform which is then impregnated with a melt of an aluminum alloy and subjected to surface polishing. The ceramic particles, from which water of crystallization has been removed while the average pore diameter of the pores thereof is maintained, are dispersed uniformly, it is possible to obtain the metal composite material in which the ceramic particles that have fine pores are exposed on surfaces evenly in a stable manner by surface polishing that is conducted after the melt impregnation. The metal composite material can permit infiltration of a lubricating oil into the fine pores. | 03-08-2012 |
| 20110210602 | AUTOMOBILE WHEEL - In an automobile wheel, a disc flange of a wheel disc includes bent surface-side edge portions each having an arcuate shape and arranged concentrically with each other, and the bent surface-side edge portions extend from the surface-side end edge of a fitted straight annular portion to be bent radially inward and are dented to a back side of the outer end portions of the lateral edge portions of spokes. The thus configured automobile wheel can exhibit high strength and rigidity against a radial load, a bending load, and a torsional load because of the shape of the bent surface-side edge portions, thereby suppressing deformation of the disc flange caused while an automobile is running. Thus, it is possible to mitigate a stress concentration on a joined portion between the wheel disc and a wheel rim. | 09-01-2011 |
| 20110198916 | AUTOMOBILE WHEEL - A front flange portion formed at an outer peripheral edge portion of a wheel disc includes an annular front peripheral portion provided on a design surface side and an annular back peripheral portion folded backward from the annular front peripheral portion to extend radially inwardly and in surface contact with a back surface of the annular from peripheral portion, and the annular front peripheral portion and the annular back peripheral portion are integrally inclined to the surface side. Therefore, the front flange portion can mitigate stress concentration on the front flange portion due to a load generated while the automobile is running. In addition, the front flange portion has, because of its shape, high durability against a radially inward load generated by a contact with a curbstone or the like. | 08-18-2011 |
| 20110198915 | AUTOMOBILE WHEEL - Because a front flange portion including an annular front peripheral portion and an annular back peripheral portion is formed along an outer peripheral edge portion of the wheel disc, and because a back surface portion and an opening end portion of a front bead seat portion of a wheel rim are welded to each other over the entire circumference of the wheel but the annular back peripheral portion and the wheel rim are not welded to each other, stress concentration on the front flange portion due to a load generated while the automobile is running can be mitigated. Therefore, an automobile wheel has high durability against a load generated while the automobile is running. | 08-18-2011 |
| 20110162521 | MMC CYLINDER LINER AND METHOD FOR PRODUCING THE SAME - An MMC cylinder liner comprises an inner tubular portion and an outer tubular portion. The inner tubular portion includes a metal matrix composite formed of a compact impregnated with an Al—Si alloy wherein the compact is made of a reinforcing material. The outer tubular portion is formed of the Al—Si alloy. The Si concentration of the Al—Si alloy impregnated into the compact of the inner tubular portion is different from the Si concentration of the Al—Si alloy of the outer tubular portion. | 07-07-2011 |
| 20110156474 | AUTOMOBILE WHEEL - An inner peripheral end portion of an annular back peripheral portion forming a front flange portion, an opening end portion of a front bead seat portion and a back surface portion of a wheel disc are joined to each other by a first welded portion and a second welded portion. Accordingly, it is possible to prevent the front flange portion from being repeatedly elastically deformed by loads generated while the automobile is running. In addition, it is possible to mitigate a stress concentration generated on the front flange portion and the first welded portion and the second welded portion. Thus, an automobile wheel can exhibit high durability. | 06-30-2011 |
| 20110155949 | PROCESS FOR PRODUCTION OF ALUMINUM WHEEL - A process for producing an aluminum wheel includes a cleaning step, in which the surface of the aluminum wheel is chemically etched with an alkali cleaning liquid which contains an alkali builder, an organic builder, and a chelating agent to such an extent that the Si atomic ratio of metal Si to oxide Si is from 0.01 to 9, and a shot blast treatment step can be omitted for cleaning the surface of the aluminum wheel. | 06-30-2011 |
| 20110101575 | PREFORM FOR COMPOSITE MATERIAL AND PROCESS FOR PRODUCING THE SAME - A preform for a composite material which has high strength and excellent air permeability and hence is applicable to a high-speed die casting method and which is capable of forming a metal composite material having excellent mechanical properties by a high-speed die casting method. Also provided is a process for producing such a preform. Ceramic fibers or/and ceramic particles are mixed with a silica sol and calcium carbonate and sintered at a predetermined temperature to form a calcium/silicon sinter obtained from the silica sol and calcium carbonate. The calcium/silicon sinter coats the ceramic fibers or/and ceramic particles so that a preform having the fibers or/and the particles bound to each other by the calcium/silicon sinter is obtained. The preform for a composite material has high strength and excellent air permeability and is applicable to the high-speed die casting method capable of attaining high productivity. | 05-05-2011 |
| 20100314932 | AUTOMOBILE WHEEL - In a disc of an automobile wheel, a plurality of hub surface rounded portions are formed at intervals on an imaginary circle provided around a hub hole and centered on an imaginary center corresponding to the center of the hub hole. The hub surface rounded portions are provided with a compressive residual stress by a compression process for work hardening. The strength of the hub surface rounded portions can thus be improved. | 12-16-2010 |
| 20100246326 | ULTRASONIC EXPLORATION METHOD AND ULTRASONIC EXPLORATION APPARATUS - To propose an ultrasonic exploration method and an ultrasonic exploration apparatus that allow exploration of an exploration-target area such as a welded portion to provide a cross-sectional image of the exploration-target area accurately and stably. | 09-30-2010 |
| 20100213756 | AUTOMOBILE WHEEL - The present invention proposes an automobile wheel that includes a wheel disk with improved stiffness to have increased strength and increased driving stability for lateral force. An imaginary inward angled line L is tangential to an inner circumferential surface | 08-26-2010 |
| 20100181822 | AUTOMOBILE WHEEL AND PROCESS FOR PRODUCING THE SAME - In an automobile wheel, a surface-side flange is provided on an outer circumferential edge of a wheel disk. The surface-side flange includes: a surface-side annular circumferential portion on an aesthetic surface; and a back-side annular circumferential portion that is formed continuously with, and on the back side of, the surface-side annular circumferential portion and that is thinner than the surface-side annular circumferential portion. An inner circumferential end of the back-side annular circumferential portion of the surface-side flange and an opening end of a surface-side bead seat of a wheel rim are welded together all along their circumferences. The automobile wheel allows the back-side annular circumferential portion of the surface-side flange to bear a stress that acts on a weld area. This relaxes the stress concentration on the weld area. | 07-22-2010 |
| 20100143704 | METAL COMPOSITE MATERIAL AND PROCESS FOR PRODUCING METAL COMPOSITE MATERIAL - A metal composite material is obtained by casting a melt of a metal and has an outer surface on which aluminum borate particles maintained in a porous form are exposed. Therefore, an oil is allowed to infiltrate the aluminum borate particles on the outer surface, to be retained therein and to ooze out during sliding. As a consequence, the sliding life during which desired sliding properties are maintained can be significantly prolonged. The metal composite material may be produced from a preform obtained by sintering aluminum borate particles covered with electrically neutralized silica and alumina particles which have been formed by mixing a silica sol and an alumina sol with aluminum borate particles in an aqueous solution to cover aluminum borate particles. | 06-10-2010 |
| 20100117444 | AUTOMOBILE WHEEL - An automobile wheel includes: a wheel rim | 05-13-2010 |
| 20100102620 | METHOD FOR PREVENTING DIRTYING OF VEHICLE WHEEL AND VEHICLE WHEEL - An object of the present invention is to obtain a vehicle wheel having a significant effect of preventing dirtying due to brake dust. A + (positively)-charged coating film in which the water contact angle is 35° or less and the product of saturated charging voltage (kV)×charge half life (sec) is 50 or less is formed on the surface of a vehicle wheel. | 04-29-2010 |
| 20090197074 | METAL COMPOSITE MATERIAL AND PROCESS FOR PRODUCTION OF METAL COMPOSITE MATERIAL - A metal composite material which can show high wear resistance and durability when used as a sliding member and a process for producing such a metal includes material are proposed. The metal composite material ( | 08-06-2009 |
| 20090035554 | PREFORM FOR COMPOSITE MATERIAL AND PROCESS FOR PRODUCING THE SAME - A preform for a composite material which has high strength and excellent air permeability and hence is applicable to a high-speed die casting method and which is capable of forming a metal composite material having excellent mechanical properties by a high-speed die casting method. Also provided is a process for producing such a preform. Ceramic fibers or/and ceramic particles are mixed with a silica sol and calcium carbonate and sintered at a predetermined temperature to form a calcium/silicon sinter obtained from the silica sol and calcium carbonate. The calcium/silicon sinter coats the ceramic fibers or/and ceramic particles so that a preform having the fibers or/and the particles bound to each other by the calcium/silicon sinter is obtained. The preform for a composite material has high strength and excellent air permeability and is applicable to the high-speed die casting method capable of attaining high productivity. | 02-05-2009 |
