Title:
【発明の名称】ラジアルタイヤの更生方法
Document Type and Number:
Japanese Patent JP2801669
Kind Code:
B2
Abstract:
PURPOSE:To improve a reclaiming procedure capable of being helpful in remarkably increasing and improving the performance, in particular, durability of a reclaimed tire by fitting a restrictive annulus ring formed in its inner surface with a recess crown radius which permits a slight glowing of the outer diameter in a crown shoulder part, and charging a predetermined inner pressure into a base tire, and further, performing open-vulcanization under the highly temperatured vulcanization environment of a somewhat lower pressure as compared with the inner pressure. CONSTITUTION:After an envelope tube 4 covering the entire surface is given therearound, it is fabricated in a regular rim, after that, an air is filled thereinto through a valve and then the inner pressure thereof is controlled in 8kg/cm<2>. The fitting of a restrictive annulus ring prior to the charging of the inner pressure is conducted and open-culcaniazation is carried out within a vulcanizing can for several hours. The restrictive annulus ring 6 becomes a recess crown in its inner surface and has a breadth crossing over the whole breadth of tread of a raw tire to be reclaimed. The degree of the recess crown in the restrictive annulus ring 6 is of a type that is restricts the growing of the outer diameter in a crown central part, however, slightly permits the growing of the outer diameter in a crown shoulder part wherein, for example, the value of an increasing rate in the shoulder inner diameter Dms of the restrictive annulus ring is set about 4 times as much as the value of an increasing rate in the central inner diameter Dmc of the restrictive annulus ring.
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Inventors:
Noriyuki Soki
Hiroshi Ueda
Nakayama Shohachiro
Hiroshi Ueda
Nakayama Shohachiro
Application Number:
JP22762089A
Publication Date:
September 21, 1998
Filing Date:
September 04, 1989
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B29D30/56; B29C35/02; B29D30/54; B29K21/00; B29K105/24; (IPC1-7): B29D30/54; B29C35/02
Domestic Patent References:
| JP5313685A | ||||
| JP1110135A | ||||
| JP53102981A |
Attorney, Agent or Firm:
Akihide Sugimura (5 outside)