1
Kawashima Haruo, Uehara Yoshikazu, Yasukouchi Takashi, Chaen Tatsuro, Matsuyama Fumihiro: Pneumatic radial tires and method of producing the same.. Bridgestone, May 3, 1995: EP0650855-A1 (8 worldwide citation)

A pneumatic radial tire comprises a radial carcass 4 of plural rubberized plies extending between bead cores 5 of the bead portions, in which at least one carcass ply of the rubberized plies is a turnup ply 4-1 extending between a pair of the bead cores 5 and wound around the bead core 5 from inside ...


2
Chaen Tatsuro, Ushikubo Toshio: Tire, tire mounting method, mold, and tire manufacturing method. Bridgestone, March 8, 2002: JP2002-067621 (4 worldwide citation)

PROBLEM TO BE SOLVED: To provide a tire which possesses a high gripping force inherent in the tire in an early stage of its use.SOLUTION: On the treading surface of a tread, a plurality of small groves 16 extending along the tire's circumference is provided, the grooves having depth of 1 to 0.5 mm a ...


3
Chaen Tatsuro, Noguchi Yoji: Block structure in pneumatic tire. Bridgestone, August 29, 2001: EP1127715-A2 (1 worldwide citation)

A block structure in a ground contact face of a tread portion of a pneumatic tire comprises blocks (6,7) defined by circumferential grooves (1) and lateral grooves (2) and a sipe (8,9) formed in the surface of each of the blocks (6,7) in a block row (3,4) at least located near to the center (C) of t ...


4
Chaen Tatsuro: Pneumatic tire and vulcanization die therefor. Bridgestone, January 8, 2002: JP2002-002224 (1 worldwide citation)

PROBLEM TO BE SOLVED: To suppress poor manufacture by preventing spew cutting in the case of opening a mold while maintaining the durability and productivity of a vulcanization die.SOLUTION: A bent spew 34 is generated on a block 22A installed in a tread 22. The direction (direction of an arrow B) w ...


5
Chaen Tatsuro, Noguchi Yoji: Land part structure for pneumatic tire. Bridgestone, August 28, 2001: JP2001-233021 (1 worldwide citation)

PROBLEM TO BE SOLVED: To improve steering stability and hydroplaning performance on a wet road while maintaining wear resistance of a land part.SOLUTION: Blocks 6 and 7 are partitioned by circumferential grooves 1 extending in a circumferential direction and lateral grooves 2 extending in a width di ...


6
Chaen Tatsuro, Noguchi Yoji: Pneumatic tire. Bridgestone, July 31, 2008: JP2008-174167

PROBLEM TO BE SOLVED: To enhance operation stability of a pneumatic tire by ensuring the sufficient ground-contact property of a tire tread part and grip force while enhancing the lateral rigidity of the pneumatic tire.SOLUTION: A carcass 20 of a bias structure of the pneumatic tire 1 is formed by c ...


7
Chaen Tatsuro: Pneumatic radial tire for passenger car. Bridgestone, January 7, 1997: JP1997-002027

PURPOSE: To improve partial wear resistance by arranging sipes longer and deeper against a land part row on the tread end side compared with a land part row of the center part of a tread. CONSTITUTION: A tread part 3 is provided with a plurality of land part rows extending in the circumferential dir ...


8
Chaen Tatsuro: Pneumatic tire. Bridgestone, January 13, 1998: JP1998-006714

PROBLEM TO BE SOLVED: To secure excellent wet performance and reduce a pattern noise. SOLUTION: This tire is constituted by a plurality of grooves 1 and 2 in the circumferential direction on the tread part and, at least one of land parts 3 between those circumferential grooves, a plurality of groove ...


9
Kawashima Haruo, Uehara Yoshikazu, Yasukochi Takashi, Chaen Tatsuro: Pneumatic radial tire and manufacture thereof. Bridgestone, January 16, 1996: JP1996-011234

PURPOSE: To obtain a pneumatic radial tire capable of sufficiently performing three properties of driving stability, vibration ride and light weight by making one of carcass plies into a turn-up ply stretching in mutual bead cores, and also making the remains into hollow downplies. CONSTITUTION: The ...


10
Chaen Tatsuro: Pneumatic radial tire. Bridgestone, June 3, 1994: JP1994-156013

PURPOSE: To improve turning performance of a tire by increasing a value of cornering power at turning transition period. CONSTITUTION: At turning transition period when a tire 10 shifts from rectilinear progress to turning, as the tire 10 holds the shape at rectilinear progress, majojity of shearing ...