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公开(公告)号：US10260596B2
公开(公告)日：2019-04-16
申请号：US15936714
申请日：2018-03-27
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Kazuyuki Ebinuma , Misa Asada , Takashi Kawata , Tomoaki Nakayasu , Kota Yoshimoto , Nobuhiro Uchida , Shouta Miyanaga
IPC: F16G13/02 , F16G13/06 , B21L9/06 , B21L9/08 , C23C8/24 , C21D9/00 , F16G13/04 , C23C16/448 , C23C8/02 , C25D3/04 , F16G13/08 , C23C8/00 , C23C8/62 , C21D1/06
Abstract: Provided are a chain component that has a simple surface treatment structure and can maintain good wear resistance over a long time, and a chain that includes the chain component and maintains good wear elongation resistance. The chain component of a power transmission chain for industrial use includes a chromium nitride layer formed on an outer side of a steel base material and containing more than 0 mass % but not more than 55 mass % iron. At least a surface of the chromium nitride layer that slides against other components is a rough surface with peaks and valleys.
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公开(公告)号：US10221924B2
公开(公告)日：2019-03-05
申请号：US15351769
申请日：2016-11-15
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Yuji Kurematsu
IPC: F16H7/08
Abstract: To provide a chain tensioner capable of constantly applying an appropriate pressing force under any situations including high-speed, high-load operation, at the start of an engine, and normal range operation, without an increase in size or amount of oil consumption. A check valve unit 150 is disposed between an oil pressure chamber 101 and an oil supply part 103. A second oil pressure chamber 102 is formed between an outer circumferential surface of a plunger 120 and a cylindrical surface 113 of a plunger bore 111, into which oil leaking from the oil pressure chamber 101 flows and whose volume increases as the plunger 120 retracts. Further provided is a relief valve unit 130 that releases oil when the pressure of the second oil pressure chamber 102 reaches or exceeds a predetermined high level.
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公开(公告)号：US10094449B2
公开(公告)日：2018-10-09
申请号：US15095529
申请日：2016-04-11
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Yudai Takagi , Masatoshi Sonoda
Abstract: Provided is a chain tensioner that can always provide a suitable reaction force and damping force to various tension fluctuations of the chain, has a simple structure, is easy to produce, and also enables a reduction in the production cost. The chain tensioner 100 has a plunger 120 inserted in a plunger bore 111, and biasing means 140 for biasing the plunger in a protruding direction of the plunger. A plurality of biasing means 140 are accommodated so as to freely expand and contract inside a high pressure chamber 101 and arranged in series along the protruding direction of the plunger 120, with a separator plate 130 interposed therebetween. The separator plate 130 has one or more oil passages that adjust oil flow.
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公开(公告)号：US20180283496A1
公开(公告)日：2018-10-04
申请号：US15937096
申请日：2018-03-27
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Misa Asada , Takashi Kawata , Tomoaki Nakayasu , Kota Yoshimoto , Nobuhiro Uchida , Masanori Yokoyama
Abstract: Provided are a chain component that has a simple surface treatment structure and can maintain favorable wear resistance over a long time, and a chain that includes this chain component and maintains favorable wear elongation resistance. The chain component of a power transmission chain for industrial use includes a chromium nitride layer containing more than 0 mass % but not more than 55 mass % iron and formed on an outer side of a steel base material.
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公开(公告)号：US20180274636A1
公开(公告)日：2018-09-27
申请号：US15926191
申请日：2018-03-20
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Masanori Watanabe
Abstract: An object of the present invention is to provide a tensioner capable of keeping the oil pressure in an oil pressure chamber stable in a favorable manner. Provided is a tensioner wherein a relief mechanism includes a partition part, a valve member at least partly positioned inside an internal relief hole such as to be able to approach and separate from an oil pressure chamber, a valve biasing unit, and an external relief hole. A movement restricting part that restricts movement of the valve member toward the oil pressure chamber is formed in the partition part. An oil passing groove is formed in at least one of an outer circumferential surface of the valve member and an inner circumferential surface of the internal relief hole, the outer circumferential surface and the inner circumferential surface facing each other.
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Patent Agency Ranking
公开(公告)号：US10083777B2
公开(公告)日：2018-09-25
申请号：US15036930
申请日：2014-11-27
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Takayuki Tetsuka , Masashi Kunii
CPC classification number: H01B7/18 , F16G13/18 , H01B7/04 , H01B7/0823 , H02G11/006
Abstract: A flat cable assembly has a belt-like portion. In the belt-like portion, cables capable of transmitting power and/or signals and a pair of tubular portions positioned at the opposite ends in the width direction are arranged in parallel with one another. Each tubular portion has a longitudinal multi joint supporting member inserted therein in a state where link members are arranged in series, and adjacent link members are pivotally connected to one another. The multi-joint supporting members are configured to limit pivoting motion in a first direction that intersects the longitudinal direction in a range to a previously defined bend radius, and to restrict flexing in a second direction that is opposite from the first direction.
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公开(公告)号：US20180252301A1
公开(公告)日：2018-09-06
申请号：US15889443
申请日：2018-02-06
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Masahiko Konno , Kozo Inoue
CPC classification number: F16H7/18 , F16H57/05 , F16H2007/185
Abstract: A guide shoe is provided, which exhibits a lower level of slide resistance between a chain and a slide surface at the time of the sliding of the chain, is able to keep a sufficient lubricant on the slide surface even at the time of the starting of an engine, and produces less noise and wear. The guide shoe includes: a slide surface that slidably guides a link plate of a traveling chain; and a plurality of guide protrusions provided on the slide surface, the guide protrusions protruding in a vertical direction from the slide surface, wherein each of front surfaces of the guide protrusions is formed to have a convex curved surface at least from a part thereof on an upstream side to a top part thereof in a chain traveling direction.
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公开(公告)号：US20180245673A1
公开(公告)日：2018-08-30
申请号：US15889618
申请日：2018-02-06
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Yohei Nakata , Toshitaka Ogo
IPC: F16H7/18
Abstract: A chain guide is provided which has a simple structure and improved durability, and which enables reduction in weight and in material cost, and moreover which does not inhibit smooth flow of resin inside a metal mold, and with which dimension errors, contour errors, internal distortion, defects and the like are reduced and concentration of internal stresses or repeatedly applied bending stresses can be prevented. A reinforcing rib of a body part includes a lateral rib that has an independent zone not connected to other parts of the reinforcing rib over a length of 20% or more of a distance between support portions at two locations of the rib. The independent zone is provided on a side further away from a guide surface than a midpoint of the height of the support wall.
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公开(公告)号：US10030744B2
公开(公告)日：2018-07-24
申请号：US15242925
申请日：2016-08-22
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Masanori Watanabe
Abstract: Provided is a simple-structured tensioner that can reduce processing and assembling workload and maintain the tensioner performance constant, as well as store a sufficient amount of oil. The tensioner includes a plunger 20, a housing 30, an inner sleeve 40, a check valve 50, and a biasing unit 60. The inner sleeve 40 includes a cylindrical body 41 having an inner part that serves as an oil reservoir chamber 13, a sleeve bottom 42 formed at one end of the cylindrical body 41, an oil hole 43 formed in the sleeve bottom 42, and a ball seat 44 which protrudes in a cylindrical shape toward an oil pressure chamber 12 integrally with and continuously from an edge of the oil hole 43 and on which a check ball 51 is seated.
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公开(公告)号：US20180195581A1
公开(公告)日：2018-07-12
申请号：US15741537
申请日：2016-07-25
Applicant: TSUBAKIMOTO CHAIN CO.
Inventor： Takayuki Tetsuka , Tamaki Shiki , Yasunori Ueno , Masashi Kunii
Abstract: A chain bending limiting attachment includes first bending limiting members and second bending limiting members. The first and second bending limiting members are detachably attached to a chain to be arranged in a series arrangement direction. Each first bending limiting member includes a first engaging portion. When the chain bends in a first direction, the first engaging portion engages with another first bending limiting member adjacent to the first bending limiting member in the series arrangement direction to limit bending of the chain in the first direction. Each second bending limiting member includes a second engaging portion. When the chain bends in a second direction, the second engaging portion engages with another second bending limiting member adjacent to the second bending limiting member in the series direction to limit bending of the chain in the second direction.
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