公开(公告)号：US10377433B2

公开(公告)日：2019-08-13

申请号：US15542595

申请日：2016-02-12

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/12 ,  B62D55/253 ,  B62D55/24

Abstract: In an elastic crawler (10) and an elastic crawler drive mechanism (100), at least a portion of the outer edge of an engaging portion (12) has a cross-sectional arc shape such that both the trajectory drawn by the outer edge of the engaging portion (12) from when the engaging portion (12) starts to enter a tooth groove of a sprocket (20) until engagement between the engaging portion (12) and teeth (22) is complete and the trajectory drawn by the outer edge of the engaging portion (12) from when the engaging portion (12) starts to disengage from the teeth (22) until disengagement is complete do not project further outward than the outer edge of the engaging portion (12) when the engagement is complete.

公开(公告)号：USD821453S1

公开(公告)日：2018-06-26

申请号：US29607424

申请日：2017-06-13

Applicant: BRIDGESTONE CORPORATION

Designer： Shoko Nagamoto ,  Takashi Mizusawa

公开(公告)号：US20150091372A1

公开(公告)日：2015-04-02

申请号：US14403271

申请日：2013-05-16

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/24

CPC classification number: B62D55/244 ,  B62D55/242

Abstract: A rubber crawler includes a rubber belt, a main cord layer that is incorporated within the rubber belt and includes a main cord configured from plural twisted strands covered with rubber, the main cord extending around the crawler circumferential direction, and a bias cord layer incorporated within the rubber belt at the crawler circumferential outside of the main cord layer configured by at least one bias ply and configured from at least one bias ply that is formed from a plurality of bias cords extending at an angle with respect to the crawler circumferential direction, disposed side-by-side around the crawler circumferential direction and covered in rubber such that bias cords of the bias ply at the circumferential outermost side of the crawler are, as viewed from the crawler circumferential outside, angled toward an opposite side, with respect to the crawler circumferential direction, from the angled side of the strands.

Abstract translation: 橡胶履带包括橡胶带，主帘线层，其包括在橡胶带内并包括由多个被橡胶覆盖的绞合线构成的主绳，主绳绕履带周向方向延伸，偏心帘线层包括在其中 主履带层周向外侧的橡胶带由至少一个偏压层构成，并且由至少一个由相对于履带周向方向以一定角度延伸的偏置帘线形成的偏置帘布层构成， 在履带周向方向上并排并且被橡胶覆盖，使得从履带周向外侧观察到的履带的周向最外侧的偏置帘布层的偏置帘线相对于履带的周向外侧成角度 履带圆周方向，从股线的成角度一侧。

公开(公告)号：US09359026B2

公开(公告)日：2016-06-07

申请号：US14403271

申请日：2013-05-16

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/24

CPC classification number: B62D55/244 ,  B62D55/242

Abstract: A rubber crawler includes a rubber belt, a main cord layer that is incorporated within the rubber belt and includes a main cord configured from plural twisted strands covered with rubber, the main cord extending around the crawler circumferential direction, and a bias cord layer incorporated within the rubber belt at the crawler circumferential outside of the main cord layer configured by at least one bias ply and configured from at least one bias ply that is formed from a plurality of bias cords extending at an angle with respect to the crawler circumferential direction, disposed side-by-side around the crawler circumferential direction and covered in rubber such that bias cords of the bias ply at the circumferential outermost side of the crawler are, as viewed from the crawler circumferential outside, angled toward an opposite side, with respect to the crawler circumferential direction, from the angled side of the strands.

Abstract translation: 橡胶履带包括橡胶带，主帘线层，其包括在橡胶带内并包括由多个被橡胶覆盖的绞合线构成的主绳，主绳绕履带周向方向延伸，偏心帘线层包括在其中 主履带层周向外侧的橡胶带由至少一个偏压层构成，并且由至少一个由相对于履带周向方向以一定角度延伸的偏置帘线形成的偏置帘布层构成， 在履带周向方向上并排并且被橡胶覆盖，使得从履带周向外侧观察到的履带的周向最外侧的偏置帘布层的偏置帘线相对于履带的周向外侧成角度 履带圆周方向，从股线的成角度一侧。

公开(公告)号：US20150097419A1

公开(公告)日：2015-04-09

申请号：US14403276

申请日：2013-05-16

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/24

CPC classification number: B62D55/244 ,  B62D55/242

Abstract: A rubber crawler includes a rubber belt, a main cord layer that is incorporated within the rubber belt and includes a main cord extending around the crawler circumferential direction, a bias cord layer that is incorporated further to the crawler circumferential outside than the main cord layer and is configured from bias cords extending at an angle with respect to the crawler circumferential direction, a bias cord layer that is interposed between the bias cord layer and the main cord layer, and is configured from bias cords extending at an angle with respect to the crawler circumferential direction so as to intersect the first bias cords, and a reinforcement cord layer that is interposed between the bias cord layer and the bias cord layer, and is configured from reinforcement cords extending in the crawler width direction.

Abstract translation: 橡胶履带包括橡胶带，主帘线层，其结合在橡胶带内并且包括围绕履带周向方向延伸的主绳，偏心绳层，其进一步包含在主履带层周围的履带周向外侧;以及 由相对于履带周向方向以一定角度延伸的偏置线构成，偏置帘线层设置在偏置帘线层和主帘线层之间，并且构成为偏置帘线相对于履带以一定角度延伸 圆周方向与第一偏置线相交;以及加强帘线层，其设置在偏置帘线层和偏斜帘线层之间，并且由沿履带宽度方向延伸的增强帘线构成。

公开(公告)号：US10730571B2

公开(公告)日：2020-08-04

申请号：US15577346

申请日：2016-05-31

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa ,  Shingo Sugihara ,  Kenji Tateishi

IPC: B62D55/24 ,  B62D55/253 ,  B62D55/14

Abstract: A crawler includes a crawler main body (a rubber crawler main body (12)), a tensile body (70), guide protrusions (16), and flat surfaces (40). The tensile body (70) is provided with a flat portion (72) that is arranged along a width direction of the crawler main body and a slanting portion (74) that is slanted and arranged at a width direction outer side of the crawler main body relative to the flat portion (72). The guide protrusions (16) are formed at an inner peripheral face of the crawler main body at a width direction middle portion of the crawler main body. The flat surfaces (40) are formed at the width direction outer sides of the crawler main body relative to the guide protrusions (16). Turning wheels (a driving wheel (100), an idling wheel (102) and rolling wheels (104)) provided at a vehicle roll on the flat surfaces (40). In a linear region of the crawler main body as seen in a side view of the crawler main body, if a thickness from an imaginary plane projected from the flat portion (72) in the width direction of the crawler main body to an end edge at a crawler main body width direction outer side of the slanting portion (74) is represented by L, then a result of subtracting a turning direction length of the crawler main body at the flat portion (72) from a turning direction length of the crawler main body at the slanting portion (74) is less than 2πL.

公开(公告)号：US10308297B2

公开(公告)日：2019-06-04

申请号：US15531556

申请日：2015-11-04

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/12 ,  B62D55/24 ,  B62D55/125

Abstract: This disclosure is to provide an elastic crawler drive mechanism including an elastic crawler (20) with engaging portions (22) disposed on an endless belt (21), and a sprocket (10) having teeth (12), wherein: engaging surfaces (F2) of the engaging portions (22) have flat engaging planes (22b) in contact with a part of tooth surfaces (F1) of the sprocket (10) when in contact with tooth bottom surfaces (11a) of the sprocket (10), and when the engaging portions (22) are in contact with the tooth bottom surfaces (11a), and simultaneously the engaging planes (22b) are in contact with the tooth surfaces (F1) of the sprocket (10), at least one of the tooth surfaces (F1) of the sprocket (10) and the engaging planes (22b) of the engaging portions (22) form gaps (C) between the tooth surfaces (F1) and the engaging planes (22b), on sides closer to the tooth bottom surfaces (11a) than contact portions (P) of the tooth surfaces (F1) and the engaging planes (22b).

公开(公告)号：US09919752B2

公开(公告)日：2018-03-20

申请号：US15344766

申请日：2016-11-07

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/24

CPC classification number: B62D55/244

Abstract: An elastic crawler includes an endless elastic body; cores that each include a core body and a pair of protrusions; lugs, on the outer circumferential side of the elastic body, each disposed so as to avoid a crawler circumferential direction area corresponding to at least a portion of the core in the crawler circumferential direction; and grooves, on the crawler inner circumferential surface, each positioned outward in the crawler width direction from the pair of protrusions in a crawler circumferential direction area corresponding to the core, each of the grooves being recessed relative to crawler inner circumferential surface portions adjacent to the groove on both sides in the crawler circumferential direction.

公开(公告)号：US10392061B2

公开(公告)日：2019-08-27

申请号：US15542700

申请日：2016-02-12

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/253 ,  B62D55/12 ,  F16H55/08 ,  F16H55/17 ,  B62D55/24

Abstract: A sprocket (10) is capable of engaging with engaging portions (22) on an elastic endless belt (21). On a tooth face (F) of a tooth (12) of the sprocket (10), a portion of a tooth base on at least one side of a center line (O1) of the tooth (12) is a tooth base surface (12b), and the tooth base surface (12b) is inclined relative to the center line (O1) of the tooth (12) at an angle (A1) in a range of 0° or greater to 7.5° or less so as to approach the center line (O1) of the tooth (12) towards a tooth tip surface (12d).

公开(公告)号：US10053169B2

公开(公告)日：2018-08-21

申请号：US15578242

申请日：2016-05-31

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi Mizusawa

IPC: B62D55/24 ,  B62D55/253

CPC classification number: B62D55/244 ,  B62D55/253

Abstract: A main cord layer is embedded in a crawler main body, and a first bias cord layer, a second bias cord layer, a third bias cord layer and a fourth bias cord layer are embedded at an outer peripheral side of the main cord layer. Bias cords of the second bias cord layer and bias cords of the third bias cord layer are inclined in a direction that is opposite, with respect to a crawler circumferential direction, bias cords of the fourth bias cord layer that are inclined with respect to the crawler circumferential direction.