公开(公告)号：JPH0516625A

公开(公告)日：1993-01-26

申请号：JP17008091

申请日：1991-07-10

Applicant: BRIDGESTONE CORP ,  KOMATSU MFG CO LTD

Inventor： KANEKO YOSHIO ,  OYAMADA SHOICHI ,  YAMADA MITSUNAO

IPC: B60C27/16 ,  B60C27/20

Abstract: PURPOSE:Not only to prevent a sideslip and to improve the riding feeling, but also to obtain a large driving force and braking force, and furthermore, to prevent a tearing-off of a tire antiskid member on the road surface under an icy and snowy condition and the like. CONSTITUTION:A tire antiskid member 12 provided on the peripheral surface of a tire 10 placing intervals in the circular direction of the tire 10 is formed of a longitudinal piece 16 extending in the circular direction of the tire positioning at the center in the width direction of the tire 10, and a pair of lateral pieces 18 positioning at both ends of the longitudinal piece 16 and extending along the width direction of the tire 10 in an H-shape form. And the tire antiskid member 12 has a reinforcing member buried along the H-shape formation.

公开(公告)号：JPH01111505A

公开(公告)日：1989-04-28

申请号：JP22620988

申请日：1988-09-09

Applicant: BRIDGESTONE CORP

Inventor： KANEKO YOSHIO ,  OYAMADA SHOICHI

IPC: B60C27/20

Abstract: PURPOSE:To prevent spikes from being buried, in plural flexible anti-slip members disposed outside a tire at predetermined intervals and provided with the spikes, by burying reinforcing cloth only on the tire abutted surface side of the base portion of the spikes in such a way as to face to the spikes. CONSTITUTION:Plural anti-slip members 20 disposed on the outer periphery of a tire 22 are connected together by means of side ropes 24 so as to constitute a tire anti-slip device in a ladder shape as a whole. The respective anti-slip members 20 are made of thermoplastic elastomer or the like and are formed into a substantial U-shaped cross section with a pair of leg portions 20B bent over from both end portions of a central portion 20A. In this case, in the respective anti-slip members 20, a canvas 32 serving as reinforcing cloth, a pair of bead fittings 34 and plural spikes 36 are buried, and further hooks 38 are fixed thereto. Both end portions of the canvas 32 are folded over around the bead fittings 34, and the base flanges 42 of the spikes 36 are placed on the canvas 32 so as to support the spikes 36.

公开(公告)号：JPH06127223A

公开(公告)日：1994-05-10

申请号：JP28453692

申请日：1992-10-22

Applicant: BRIDGESTONE CORP ,  KOMATSU MFG CO LTD

Inventor： KANEKO YOSHIO ,  OYAMADA SHOICHI ,  YAMADA MITSUNAO

IPC: B60C27/06

Abstract: PURPOSE:To provide an excellent anti-skid capability by increasing the rigidity of a longitudinal piece to prevent it from deforming as if it is folded, prevent peeling off, and prevent skid sufficiently. CONSTITUTION:A tire anti-skid device 12 is formed in H-shape with a pair of lateral pieces 18 and a longitudinal piece 16 between them, and both the lateral and longitudinal pieces 18 and 16 cut in the ice, snow, etc., on a road surface. Also a reinforcement 28 is buried in not only the lateral piece 18 but also in the longitudinal piece 16, and there is a relation of H

公开(公告)号：JPH02234816A

公开(公告)日：1990-09-18

申请号：JP5746289

申请日：1989-03-09

Applicant: BRIDGESTONE CORP

Inventor： KANEKO YOSHIO ,  OYAMADA SHOICHI ,  UMEMOTO KATSUMI

IPC: B60C27/20

Abstract: PURPOSE:To have close contact certainly by forming a recess at the inside of each of a pair of legs, which are bent from the center in contact with the tire tread and contact the side face of tire, and thereby allowing a slip preventive device to bend easily in compliance with the width of tire. CONSTITUTION:In a tire slip preventive device 10, a plurality of slip stoppers 14 to be fitted to the periphery of the tire 12 are coupled together by a rope 16 so as to assume the form of a ladder in the whole. Each slip stopper 14 is made of flexible substance, and a pair of legs 14B are bent from the two ends of its central part 14A so as to assume a channel profile as a whole. Therein a recess 18 is formed at the inside of each leg 14B near the continued point 15 from the central part 14A to the leg 14B. The recess 18 is for ex. semicircular and formed in a groove stretching in the width direction of the leg 14B. This permits the slip stopper 14 to be bent easily in compliance with the width of tire 12.

公开(公告)号：JPH08238624A

公开(公告)日：1996-09-17

申请号：JP4294695

申请日：1995-03-02

Applicant: BRIDGESTONE CORP

Inventor： OYAMADA SHOICHI

IPC: B29C33/02 ,  B29C33/00 ,  B29D30/56 ,  B29L30/00

Abstract: PURPOSE: To provide a precure tread mold for a recapped tire, in which protruded rubber can easily be separated. CONSTITUTION: In a precure tread mold 3 for a recapped tire, which consists of a top mold 1 and a bottom mold 3 and on the mating surface at both the widthwise end parts 6 of which rubber relief grooves A1 are respectively provided parallel to the longitudinal direction of the mold 3, a rubber cutting-off groove A2 is provided parallel to each of the grooves A1 between each groove A1 and each tread width end 8 of the mold 3. The ratio S2 /S1 of the widthwise crosssection S2 of the groove A2 to that S1 of the groove A1 lies within the range from 0.02 to 0.25. Moreover the distance between the tread width end 8 of the mold 3 and the inside end 12 of the groove A2 is set on 2mm or less and, in addition. A plurality of ridges 10, which connect the groove A1 to the groove A2 , are provided.

公开(公告)号：JPH04185938A

公开(公告)日：1992-07-02

申请号：JP31148690

申请日：1990-11-19

Applicant: BRIDGESTONE CORP

Inventor： KANEKO YOSHIO ,  OYAMADA SHOICHI

IPC: F16G15/04

Abstract: PURPOSE:To simplify the structure and facilitate manufacturing, and to ensure the connection hard to be coming-off in terms of structural bonding power, when a chain or a rope is used for the connection by arranging an elastic member on a notch part of a letter C-shaped hook. CONSTITUTION:An elastic member 3 is arranged on the notch part of a letter C-shaped hook 2. A connecting tool 1 provided with the elastic member 3 on the notch part of the C-shaped hook 2, is fitted or removed when the force greater than the resiliency of the elastic member 3 is applied, and it cannot be fitted nor removed when the power is smaller than the resiliency of the elastic member 3. As the resiliency of the elastic member 3 is stronger, more force is needed when a chain or rope is connected together, or is fitted into a gap, and the possibility of removal is reduced and the connection is thus strengthened. The structure is simplified, and the manufacturing is facilitated, while the connection is ensured in terms of structural bonding power, when a chain or rope is used for the connection.

公开(公告)号：JPH01244907A

公开(公告)日：1989-09-29

申请号：JP33312688

申请日：1988-12-28

Applicant: BRIDGESTONE CORP

Inventor： KANEKO YOSHIO ,  IGARASHI TOSHIO ,  OYAMADA SHOICHI

IPC: B60C27/10 ,  B60C27/16

Abstract: PURPOSE:To improve lock performance by providing two or more friction engaging parts or the like which support one end part of a side rope in a fold state to inhibit its movement, in the case of a lock mechanism connecting both end parts of the side rope mutually tightening two or more tire slip stopper members. CONSTITUTION:A lock mechanism 16 is applied to a side rope 12 mounted to two or more tire slip stopper members arranged in the periphery of a tire. Here the lock mechanism 16 secures a stopper 32 to the intermediate part of an oval-shaped main unit metal fixture 30 while respectively provides a lever part 36 to be arranged in a side forming an opening 34 bordering the stopper 32 further a hook part 38 to be arranged in an opposite side. While the main unit metal fixture 30 is externally fit two equally shaped moving metal fixtures 40, 42 serving as the friction engaging part. The side rope 12 hooks its one end part to the hook part 38 through a hook 41. While the other end part of the side rope 2 is successively wound on each moving metal fixture 40, 42, when they are adapted to the stopper 32, the side rope is locked.

公开(公告)号：JPH01111506A

公开(公告)日：1989-04-28

申请号：JP22621088

申请日：1988-09-09

Applicant: BRIDGESTONE CORP

Inventor： KANEKO YOSHIO ,  OYAMADA SHOICHI

IPC: B60C27/20

Abstract: PURPOSE:To prevent spikes from being drawn out, in plural flexible anti-slip members provided with the spikes and disposed outside a tire at predetermined intervals, by burying reinforcing cloth only on the road abutted surface side of the base portion of the spikes. CONSTITUTION:Plural anti-slip members 20 disposed around a tire 22 are connected by means of side ropes 24 so as to constitute a tire anti-slip device in a ladder shape as a whole. The respective anti-slip members 20 are made of thermoplastic elastomer or the like and are formed into a substantial U-shaped cross section with a pair of leg portions 20B bent over from both end portions of a central portion 20A. In this case, in the respective members 20, a canvas 30 serving as reinforcing cloth, a pair of bead fittings 34 and plural spikes 36 are buried, and further hooks 38 are fixed thereto. Both end portions of the canvas 30 are folded over around the bead fittings 34, and a shank 40 is inserted into through holes 30A formed on the canvas 30 so as to support the spikes 36.

公开(公告)号：JPH08267607A

公开(公告)日：1996-10-15

申请号：JP6903995

申请日：1995-03-28

Applicant: BRIDGESTONE CORP

Inventor： TAMURA AKIRA ,  OYAMADA SHOICHI

IPC: B29D30/54 ,  B29D30/62 ,  B29K21/00 ,  B29K105/24 ,  B29L30/00

Abstract: PURPOSE: To obtain a molding method for a green tire for a retreaded tire with a good quality by a method wherein a band-form unvulcanized tread extruded from a dual tuber directly connected to a molding machine is directly bonded to an outer peripheral surface of a base tire. CONSTITUTION: In a molding method for a green tire for a retreaded tire, a used tire is buffed after a head part thereof is cut and removed, a remaining base tire 1 is mounted on a molding machine 2, and a band-form unvulcanized tread 8 is bonded to an outer peripheral surface of the base tire 1. At this time, a dual tuber 3 is directly connected to the molding machine 2. The band- form unvulcanized tread 8 extruded from a die 7 provided at an outlet of the dual tuber 3 is directly bonded to the outer peripheral surface of the base tire 1.

公开(公告)号：JPH06156030A

公开(公告)日：1994-06-03

申请号：JP30707392

申请日：1992-11-17

Applicant: BRIDGESTONE CORP

Inventor： KANEKO YOSHIO ,  OYAMADA SHOICHI

IPC: B60C27/06

Abstract: PURPOSE:To ensure an easy work for joining members to be connected to each other under tension. CONSTITUTION:When a lever 34 is inserted in the link section 40 of a chain 20 and turned toward the inlet side of a link 30, the chain 20 is given tension annularly along the lengthwise direction of the lever 34. After the lever 34 is turned toward the inlet side of the link 30, a stopper 42 slides along the link 30 and comes to be coupled to a hook 44, thereby prohibiting the turn of the lever 34 toward the outlet side of the link 30 and joining the chain 20. In this case, a cord 48 is hooked to an engagement hook 46 and pulled for turning the lever 34 toward the inlet side of the link 30. According to this construction, the lever 34 does not need to be manually pushed for turning the lever 34 toward the inlet side of the link 30, but the pull of the cord 48 is simply required. Thus, even a substantial force required due to the tension of the chain 20, can be well coped with, and an easy joining work can be ensured.