Invention Grant
- Patent Title: Tire vulcanizing bladder and pneumatic tire
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Application No.: US16772805Application Date: 2018-06-14
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Publication No.: US11993041B2Publication Date: 2024-05-28
- Inventor: Junichi Oride , Yasuhiro Oda , Isao Matsumura , Yuya Morita
- Applicant: BRIDGESTONE CORPORATION
- Applicant Address: JP Chuo-ku Tokyo
- Assignee: BRIDGESTONE CORPORATION
- Current Assignee: BRIDGESTONE CORPORATION
- Current Assignee Address: JP Chuo-ku Tokyo
- Agency: KENJA IP LAW PC
- Priority: JP 17244478 2017.12.20
- International Application: PCT/JP2018/022744 2018.06.14
- International Announcement: WO2019/123686A 2019.06.27
- Date entered country: 2020-06-15
- Main IPC: B29D30/06
- IPC: B29D30/06 ; B60C19/00 ; B60C19/12 ; B60C13/00

Abstract:
Provided is a tire vulcanizing bladder comprising fluororubber, wherein a plurality of grooves extending in a width direction are formed on a circumference of an outer surface of the tire vulcanizing bladder, and a plurality of recesses connecting the grooves to each other are formed between the grooves. Also provided is a pneumatic tire comprising one or more fluorine-containing particles having a maximum diameter of 1.0 μm or more per area of 100 μm2 of a tire inner surface, wherein a plurality of bladder ridges extending in a tire width direction are formed on a circumference of the tire inner surface, and a plurality of protrusions connecting the bladder ridges to each other are formed between the bladder ridges.
Public/Granted literature
- US20210162634A1 TIRE VULCANIZING BLADDER AND PNEUMATIC TIRE Public/Granted day:2021-06-03
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