发明授权
- 专利标题: Tread with spaced projections in stone ejecting groove
- 专利标题(中): 在石抛射槽中具有间隔的突起的胎面
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申请号: US207506申请日: 1980-11-17
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公开(公告)号: US4345632A公开(公告)日: 1982-08-24
- 发明人: Hiroyoshi Takigawa , Nobuhiro Miyamura
- 申请人: Hiroyoshi Takigawa , Nobuhiro Miyamura
- 申请人地址: JPX Tokyo
- 专利权人: Bridgestone Tire Co., Ltd.
- 当前专利权人: Bridgestone Tire Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX54-153646 19791129
- 主分类号: B60C11/04
- IPC分类号: B60C11/04 ; B60C11/03 ; B60C11/13
摘要:
A heavy duty pneumatic tire having a tread provided on its outer surface with a plurality of circumferential grooves is disclosed. At least one of the circumferential grooves is opened on the tread surface at an open groove width corresponding to 2-8% of tread transverse width, has a groove bottom width substantially equal to the open groove width, and is provided on its groove bottom with plural protrusions separated from the opposed groove walls and at an interval between the adjoining protrusions in the circumferential direction of the groove.
公开/授权文献
- US5384048A Bioremediation of contaminated groundwater 公开/授权日:1995-01-24