Title:
タイヤ形成用の剛性中子
Document Type and Number:
Japanese Patent JP5486622
Kind Code:
B2
Abstract:
Provided is a rigid core for forming a tire, configured so that the intrusion of rubber into a gap between core segments is prevented and so that the lowering of roundness of a core body s prevented. The core body comprises a plurality of circumferentially divided core segments. Both circumferential end surfaces of each of the core segments are used as mati ng surfaces, and the mati ng surfaces adjacent to each other in the circumferential direction are abutted against each other to form the core body. At least one of the mating surfaces adjacent to each other in the circumferential direction is formed as a stepped mating surface comprising a bordering surface region extendi ng along an outer circumferential edge of the mati ng surface, and a recessed surface region surrounded by the bordering surface region and recessed in a step shape from the bordering surface region so that only the bordering surface region contacts with the adjacent mating surface.
Inventors:
Kei Ohara
Application Number:
JP2012050744A
Publication Date:
May 07, 2014
Filing Date:
March 07, 2012
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B29D30/12
Domestic Patent References:
| JP2011161896A | ||||
| JP2003340824A | ||||
| JP2006347177A | ||||
| JP2007152957A | ||||
| JP2006117115A |
Foreign References:
| US20070251630 | ||||
| US1784960 | ||||
| US1735896 | ||||
| US1343504 |
Attorney, Agent or Firm:
Sumitomo Shintaro