# US 2018/0024027 A1 · Tire testing rim > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0024027 A1 - Document ID: US20180024027A1 - Status: Published application - Kind: A1 - Application number: 15/548,889 - Filed: 2016-01-15 - Published: 2018-01-25 - Earliest claimed: 2015-02-09 - Assignees: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) - Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) - Inventors: Toru OKADA - Web page: https://patentgrep.com/patent/US20180024027A1 ## CPC - G01M 17/021: {Tyre supporting devices, e.g. chucks (for balancing G01M1/04)} - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR ## Abstract A rim for tire testing includes a rim body that is rotatably provided in a tire testing device so that a tire to be tested can be attached to the rim body, and a filling unit that can fill the tire to be attached to the rim body with a gas at a predetermined pressure. The rim body can be divided into a plurality of members in a direction along a rotational axis of the rim body. Of the rim body divided into the plurality of members, a rim base portion to be contact with a tire bead portion of the tire is integrated with the other divided members than the rim base portion by use of a coupling member. ## Claims ### Claim 1 A rim for tire testing, comprising a rim body that is rotatably provided in a tire testing device so that a tire to be tested can be attached to the rim body, and a filling unit that can fill the tire to be attached to the rim body with a gas at a predetermined pressure, wherein: the rim body can be divided into a plurality of members in a direction along a rotational axis of the rim body; and of the rim body divided into the plurality of members, a rim base portion to be contact with a tire bead portion of the tire is integrated with the other divided members than the rim base portion by use of a coupling member. ### Claim 2 (depends on 1) The rim for tire testing according to claim 1, wherein: the rim body is divided into the rim base portion, a rim flange portion that is disposed on one side of the rim base portion and in the direction along the rotational axis, and a body portion that is disposed on the other side of the rim base portion and in the direction along the rotational axis; and the rim base portion, the rim flange portion and the body portion are integrated by use of the coupling member. ### Claim 3 (depends on 1) The rim for tire testing according to claim 1, wherein a positioning mechanism that aligns a rotational axis of the rim base portion with rotational axes of the other divided members than the rim base portion is provided between the rim base portion and the other divided members than the rim base portion. ### Claim 4 (depends on 2) The rim for tire testing according to claim 2, wherein a positioning mechanism that aligns a rotational axis of the rim base portion with rotational axes of the other divided members than the rim base portion is provided between the rim base portion and the other divided members than the rim base portion. ### Claim 5 (depends on 1) The rim for tire testing according to claim 1, wherein an outer peripheral surface of the rim base portion has been subjected to a friction reduction treatment for reducing a frictional force to the tire. ### Claim 6 (depends on 5) The rim for tire testing according to claim 5, wherein the friction reduction treatment includes a concave-convex structure that is formed in the outer peripheral surface of the rim base portion, and a coating layer with which a surface of the concave-convex structure is coated. ### Claim 7 (depends on 6) The rim for tire testing according to claim 6, wherein a maximum roughness Ry of the concave-convex structure is 10 μm or more. ### Claim 8 (depends on 2) The rim for tire testing according to claim 2, wherein an outer peripheral surface of the rim base portion has been subjected to a friction reduction treatment for reducing a frictional force to the tire. ### Claim 9 (depends on 3) The rim for tire testing according to claim 3, wherein an outer peripheral surface of the rim base portion has been subjected to a friction reduction treatment for reducing a frictional force to the tire. ### Claim 10 (depends on 4) The rim for tire testing according to claim 4, wherein an outer peripheral surface of the rim base portion has been subjected to a friction reduction treatment for reducing a frictional force to the tire. ### Claim 11 (depends on 8) The rim for tire testing according to claim 8, wherein the friction reduction treatment includes a concave-convex structure that is formed in the outer peripheral surface of the rim base portion, and a coating layer with which a surface of the concave-convex structure is coated. ### Claim 12 (depends on 9) The rim for tire testing according to claim 9, wherein the friction reduction treatment includes a concave-convex structure that is formed in the outer peripheral surface of the rim base portion, and a coating layer with which a surface of the concave-convex structure is coated. ### Claim 13 (depends on 10) The rim for tire testing according to claim 10, wherein the friction reduction treatment includes a concave-convex structure that is formed in the outer peripheral surface of the rim base portion, and a coating layer with which a surface of the concave-convex structure is coated. ### Claim 14 (depends on 11) The rim for tire testing according to claim 11, wherein a maximum roughness Ry of the concave-convex structure is 10 μm or more. ### Claim 15 (depends on 12) The rim for tire testing according to claim 12, wherein a maximum roughness Ry of the concave-convex structure is 10 μm or more. ### Claim 16 (depends on 13) The rim for tire testing according to claim 13, wherein a maximum roughness Ry of the concave-convex structure is 10 μm or more.