公开(公告)号：JPH08258511A

公开(公告)日：1996-10-08

申请号：JP6646195

申请日：1995-03-24

Applicant: BRIDGESTONE CORP

Inventor： EOMO SAKAE ,  HASHIMOTO TAKATSUGU ,  NOMURA HIDEAKI ,  SHIMIZU FUMIO

IPC: B60C11/00 ,  B32B5/18 ,  B60C11/11

Abstract: PURPOSE: To provide an inexpensive traveling body with lugs, such as a tire or a crawler which is hardly mudded at work in the damp ground, the soft ground or the muddy ground, and excellent in productivity. CONSTITUTION: A traveling body with lugs, such as an agricultural tire or a crawler is provided with a plurality of lugs 3 arranged on a tread 2 at distances in the circumferential direction, and the front surface of the tread 2 including the lugs 3 is covered by a mudding preventing layer formed of a foamed rubber layer of continuous bubbles, having a thickness of 2 to 10mm, the mean foaming radius of 10 to 1000μm, the ASKAR-C hardness of 2 to 70, and the density of 0.02 to 0.5.

公开(公告)号：JP2003146019A

公开(公告)日：2003-05-21

申请号：JP2001345745

申请日：2001-11-12

Applicant: BRIDGESTONE CORP

Inventor： EOMO SAKAE

IPC: B60C11/00 ,  B60C11/11

Abstract: PROBLEM TO BE SOLVED: To provide a tire for an agricultural machine that excels in vibrational ride comfort by suppressing a vibration at travel due to a high lug of the tire for an agricultural machine, especially a rolling vibration at good road travel. SOLUTION: The tire for an agricultural machine has a plurality of circumferentially spaced lugs in a tire tread, whose width is equal to or smaller than an overall tire width. A tread end diameter is set smaller than an outside tire diameter by 12 to 20% of the tread width.

公开(公告)号：JPH08295106A

公开(公告)日：1996-11-12

申请号：JP10587595

申请日：1995-04-28

Applicant: BRIDGESTONE CORP

Inventor： EOMO SAKAE ,  IIJIMA TOKUICHIRO

IPC: B60C11/11

Abstract: PURPOSE: To provide a running body with lug to which dirt is hard to stick even if the running body runs on highly viscous wet paddy or sludgy ground. CONSTITUTION: In a running body with lugs having a plurality of lugs 3 disposed on a tread at given intervals in a circumferential direction, the lugs 3 are covered by an anti-dirt layer 5 comprising an elastic material layer of low hardness at least from the side wall of a pressing side of the lug 3 to the bottom of the lug 3, thereby making the thickness of the anti-dirt layer of the bottom of the lug larger.

公开(公告)号：JPH071903A

公开(公告)日：1995-01-06

申请号：JP14584393

申请日：1993-06-17

Applicant: BRIDGESTONE CORP

Inventor： EOMO SAKAE

IPC: B60B15/02

Abstract: PURPOSE:To provide a pneumatic tire for a vegetable transplanter vehicle capable of effectively preventing the breakage of the vinyl sheet placed over the furrow and the positional deviation by devising the shape of the lug. CONSTITUTION:A pneumatic tire is mounted on a vegetable transplanter vehicle transplanting vegetables on the furrows through an opening part for transplanting vegetable provided in the vinyl sheet, an on the tire a lug 12 is formed in an approximately truncated chevron shape and projected from the tire surface so as to give a pattern negative ratio of 70-80%. The lug 12 is present in an extending manner so that the lug height H12 may be substantially and gradually reduced from the vicinity of the tread center part to the outermost end 12b to be located on the inner side than the tire width W10 away in the width direction, and at the same time, the lug is provided with the tread 12c forming a smooth curve on the orthogonal section at an arbitrary position in the width direction. The tread 12c of the lug is preferably of a round end shape where the end part of the curve on the section is of the specified diameter.

公开(公告)号：JP2008273312A

公开(公告)日：2008-11-13

申请号：JP2007117152

申请日：2007-04-26

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： EOMO SAKAE

IPC: B60C11/11

Abstract: PROBLEM TO BE SOLVED: To provide a tire for an agricultural machine having excellent ride quality without increasing manufacturing cost. SOLUTION: In the tire 10 for the agricultural machine, a plurality of lugs 12 reaching the center of the tire width direction H from outer ends in the tire width direction H are projected from a tread 11 with a space in the tire circumferential direction S, and the size of the tread 11 in the tire width direction H is set to be equal to or smaller than the total width SW of the tire 10. A recess 13 recessed inward of the tire radial direction is formed in a center portion TC located at the center of the tread 11 in the tire width direction H in each lug 12. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供具有优良乘坐质量的农业机械的轮胎，而不增加制造成本。 解决方案：在用于农业机械的轮胎10中，从轮胎宽度方向H的外端到达轮胎宽度方向H的中心的多个凸耳12从轮胎周向的空间从胎面11突出 方向S，胎面11在轮胎宽度方向H上的尺寸设定为等于或小于轮胎10的总宽度SW。在轮胎径向方向内侧凹陷的凹部13形成在中心部 TC位于每个凸耳12的轮胎宽度方向H上的胎面11的中心。版权所有（C）2009，JPO＆INPIT

公开(公告)号：JPH10230708A

公开(公告)日：1998-09-02

申请号：JP3782597

申请日：1997-02-21

Applicant: BRIDGESTONE CORP

Inventor： EOMO SAKAE

IPC: B60C11/00 ,  B60C11/11 ,  B60C11/117

Abstract: PROBLEM TO BE SOLVED: To prevent the adhesion of mud and reduce an amount of mud carried out of a cultivated farmland by arranging a plurality of linear grooves which have a predetermined length in a plurality of rows on a surface of a mud adhesion prevention layer in a bottom part of a lug. SOLUTION: A tire 1 is for an agricultural work vehicle (tractor) having a tire size of 11.2 to 24 and is provided with a plurality of lugs 3 which are arranged at intervals in the direction of outer periphery of a tread. A plurality of linear grooves M which have a predetermined length are arranged at a predetermined interval in the longitudinal direction of the groove M in a plurality of rows on an outer surface of a mud adhesion prevention layer in a bottom part 8 of the lug between the lugs 3. Each groove M has a width of 0.4 to 1mm, a length of 10mm, and a depth of 1 to 2mm. An interval in the direction of row between the grooves is 6 to 10mm, an interval in the longitudinal direction between the grooves is 2mm, and a ratio of the length of the groove to the interval between the grooves is 0.2.

公开(公告)号：JPH08324209A

公开(公告)日：1996-12-10

申请号：JP2007496

申请日：1996-02-06

Applicant: BRIDGESTONE CORP

Inventor： EOMO SAKAE ,  HASHIMOTO TAKATSUGU ,  NOMURA HIDEAKI

IPC: B60C11/00 ,  B32B5/18 ,  B60C11/11

Abstract: PURPOSE: To reduce taking-out of mud to the possible minimum level when a traveling body escapes from a wet field or the like by completely covering a surface of a tread containing at least side surfaces of plural lugs arranged at intervals in the circumferential direction on the tread with a mud sticking preventive layer composed of an elastic body layer having low hardness. CONSTITUTION: A tire 1 is provided with plural lugs 3 arranged at intervals in the circumferential direction on a tread 2. A surface of the tread 2 containing a back face and a side surface of these lugs 3, a sidewall part and a shoulder area is completely covered with a mud sticking preventive layer on which a thickness is 5 mm and an average foaming diameter is 100μm and ASKAR-C hardness is 30 and specific gravity is 0.5 and which is composed of a foaming rubber layer of mixed type independent foam of natural rubber and polybutadiene rubber. Since mud hardly sticks at work time in a wet field, a weak place, a muddy place or the like, taking-out of mud when a traveling body escapes from a wet field or the like can be reduced to the possible minimum level.

公开(公告)号：JPH05178025A

公开(公告)日：1993-07-20

申请号：JP34483791

申请日：1991-12-26

Applicant: BRIDGESTONE CORP

Inventor： EOMO SAKAE

IPC: B60C11/11

Abstract: PURPOSE:To display a strong tractive force and to prevent side skid by forming a lag with a bridge extending roughly in the circumferential direction to connect a side part inclined in a range of a specified angle against the direction of the rotation axis of a tire, a central part and two other parts which are less inclined than the side part with each other. CONSTITUTION:Lags 2 extending from both sides of a tread 1 to the center of the tread 1 inclined in a herringbone pattern are arranged with specified intervals. This side part 4 constituting these lags 2 is inclined in a range of 20 deg.-45 deg. against the direction of the rotation axis of a tire, and this side part is cut into a part of earth well, and a tractive force is displayed. The tractive force is more strongly displayed as this side part 4 is well engaged with a stump by lessening inclination of its central part 5 rather than inclination of the side part 4. Furthermore, it is possible to prevent side slip of a reaping machine body and to restrain rolling by forming a bridge 6 extending roughly in the circumferential direction to connect the side part 4 and the central part 5 with each other.

公开(公告)号：JP2009280086A

公开(公告)日：2009-12-03

申请号：JP2008134371

申请日：2008-05-22

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： EOMO SAKAE

IPC: B60C11/12 ,  B60C11/00 ,  B60C11/11

Abstract: PROBLEM TO BE SOLVED: To provide a lug tire can improve vibration ride comfort performance especially during traveling on a good road without degrading traction performance. SOLUTION: A plurality of thin grooves 18 extending in a tire circumference direction are formed on a tread of a lug 14 in a tire width direction to reduce rigidity of the tread part of the lug 14, and to buffer rolling vibration during driving on a good road, thus improving vibration ride comfort performance. The vibration ride comfort performance can be improved without changing the shape of the lug 14, therefore, the original performance of the lug, that is the traction performance on a rough road, such as a field is not degraded. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供凸耳轮胎，可以改善振动乘坐舒适性，特别是在良好道路行驶时，不会降低牵引性能。 解决方案：在轮胎宽度方向上的凸缘14的胎面上形成有沿轮胎周向延伸的多个细槽18，以降低凸缘14的胎面部的刚性，并缓和行驶过程中的滚动振动 在良好的道路上，从而改善了振动乘坐舒适性能。 可以在不改变凸耳14的形状的情况下改善振动乘坐舒适性能，因此，凸耳的原始性能，即在诸如场的粗糙道路上的牵引性能不会降低。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2005289315A

公开(公告)日：2005-10-20

申请号：JP2004111372

申请日：2004-04-05

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： EOMO SAKAE

IPC: B60C3/00 ,  B60C11/00 ,  B60C11/11

Abstract: PROBLEM TO BE SOLVED: To provide a tire for an agricultural machine improved in vibrational ride comfort, especially vibrational ride comfort at the of travelling on a fine road without decreasing traction performance. SOLUTION: This tire 10 for the agricultural machine is provided with a vibration absorbing rubber layer 24 absorbing vibration in at least a part of the inner side of the central part Scn in the tire radial direction. The central area Acn including the central part Scn is set in the range of 40%-60% of the length of a tread width in the tread width direction while straddling a tire equator line CL. A radius of curvature R 1 , which is the radius of curvature of the central part Scn is two times as much as a tire radius H 0 and more. Moreover, a radius of curvature R 2 , which is the radius of curvature of a shoulder part Ssh, is smaller than the radius of curvature R 1 . COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种改善振动乘坐舒适性的农业机械轮胎，特别是在精细道路上行驶而不降低牵引性能的振动乘坐舒适性。 解决方案：用于农业机械的该轮胎10设置有吸收橡胶层24，吸收橡胶层24在轮胎径向方向上吸收中心部分Scn的内侧的至少一部分的振动。 包括中心部分Scn的中心区域Acn设定在胎面宽度方向的胎面宽度的长度的40％-60％的范围内，同时跨越轮胎赤道线CL。 作为中心部Scn的曲率半径的曲率半径R 1 是轮胎半径H 0 以上的两倍。 此外，作为肩部Ssh的曲率半径的曲率半径R SB2 小于曲率半径R SB> 1 。 版权所有（C）2006，JPO＆NCIPI