公开(公告)号：US20240051626A1

公开(公告)日：2024-02-15

申请号：US18366044

申请日：2023-08-07

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA

IPC: B62D55/253

CPC classification number: B62D55/253

Abstract: A rubber crawler 1 includes an endless crawler body 12 made of rubber, and a plurality of cores 13 embedded in the crawler body and arranged along the crawler circumferential direction, where at least a first projection on the crawler width direction first side in a pair of first projections of each core has a first recess R1 on a surface facing a second projection of another core of the surfaces on the two sides in the crawler width direction.

公开(公告)号：US20180148113A1

公开(公告)日：2018-05-31

申请号：US15578242

申请日：2016-05-31

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA

IPC: B62D55/24

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.

公开(公告)号：US20170355406A1

公开(公告)日：2017-12-14

申请号：US15542700

申请日：2016-02-12

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA

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

CPC classification number: B62D55/253 ,  B62D55/12 ,  B62D55/244 ,  F16H55/08 ,  F16H55/17 ,  F16H55/171

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：US20180265144A1

公开(公告)日：2018-09-20

申请号：US15542595

申请日：2016-02-12

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA

IPC: B62D55/12

CPC classification number: B62D55/12 ,  B62D55/244 ,  B62D55/253

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：US20180154959A1

公开(公告)日：2018-06-07

申请号：US15577348

申请日：2016-06-03

Applicant: BRIDGESTONE CORPORATION

Inventor： Shingo SUGIHARA ,  Kenji TATEISHI ,  Takashi MIZUSAWA

IPC: B62D55/24

CPC classification number: B62D55/244

Abstract: A crawler includes crawler body formed by an elastic body shaped into an endless loop, a tensile body embedded in the crawler body and wound around a circumferential direction of the crawler body, guide projections formed at an inner circumferential surface of a width direction central portion of the crawler body and spaced apart in the circumferential direction of the crawler body, a flat face, upon which a rotating wheel provided at a vehicle rolls, forming an inner circumferential surface further toward a width direction outer side of the crawler body than the guide projections and an inclined face, upon which the rotating wheel rolls, inclined from an outer side end portion of the flat face in a crawler body width direction such that a thickness of the crawler body gradually increases toward the width direction outer side and circumferential inner side of the crawler body.

公开(公告)号：US20170057575A1

公开(公告)日：2017-03-02

申请号：US15242620

申请日：2016-08-22

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA

IPC: B62D55/24

CPC classification number: B62D55/244

Abstract: A crawler of the present invention includes a crawler body that is formed in an endless shape from an elastic material, a main cord layer that is embedded in the crawler body, and that is configured including one or plural main cords extending along a crawler peripheral direction, and a reinforcement layer that is embedded in the crawler body, and that is configured including plural monofilament cords disposed around the entire crawler peripheral direction so as to intersect the main cord direction.

Abstract translation: 本发明的履带装置包括由弹性材料形成为环状的履带体，嵌入在履带体内的主帘线层，其构造成包括沿着履带周向延伸的一根或多根主绳索 以及嵌入在履带体内的加强层，其被配置为包括围绕履带周向方向设置的多根单丝帘线，以与主绳方向相交。

公开(公告)号：US20180148110A1

公开(公告)日：2018-05-31

申请号：US15577346

申请日：2016-05-31

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA ,  Shingo SUGIHARA ,  Kenji TATEISHI

IPC: B62D55/14 ,  B62D55/253

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：US20180134333A1

公开(公告)日：2018-05-17

申请号：US15564024

申请日：2016-04-14

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA

IPC: B62D55/24 ,  B62D55/125

CPC classification number: B62D55/242 ,  B62D55/125 ,  B62D55/253

Abstract: The elastic crawler according to this disclosure is an elastic crawler comprising on an inner circumferential side a plurality of engaging portions (14) respectively engageable with a plurality of pin members (22) arranged at a spacing in a circumferential direction of a sprocket, wherein: the engaging portions (14) have a pressure receiving surface (14a) which receives the pin members (22), an outline shape in side view of the pressure receiving surface (14a) being formed by an envelope L1 drawn by an outer end of the pin members (22) when the sprocket rolls coaxially with a central axis of a virtual rotor with a rolling diameter D1 as defined in D1=(pitch of the engaging portions)×(number of pin members)/(π)×a, and 0.9≤a

公开(公告)号：US20170327163A1

公开(公告)日：2017-11-16

申请号：US15531556

申请日：2015-11-04

Applicant: BRIDGESTONE CORPORATION

Inventor： Takashi MIZUSAWA

IPC: B62D55/24 ,  B62D55/125

CPC classification number: B62D55/24 ,  B62D55/12 ,  B62D55/125 ,  B62D55/244

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：US20170151987A1

公开(公告)日：2017-06-01

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.