US3742776A - Silent chain with improved rocker joint - Google Patents

Silent chain with improved rocker joint Download PDF

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Publication number
US3742776A
US3742776A US00190872A US3742776DA US3742776A US 3742776 A US3742776 A US 3742776A US 00190872 A US00190872 A US 00190872A US 3742776D A US3742776D A US 3742776DA US 3742776 A US3742776 A US 3742776A
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United States
Prior art keywords
links
openings
channel
pins
group
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Expired - Lifetime
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US00190872A
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English (en)
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S Avramidis
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FMC Corp
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FMC Corp
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Assigned to WILMINGTON TRUST COMPANY, RODNEY SQUARE NORTH, WILMINGTON, DE 19890, A DE BANKING CORP. reassignment WILMINGTON TRUST COMPANY, RODNEY SQUARE NORTH, WILMINGTON, DE 19890, A DE BANKING CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PT COMPONENTS, INC.
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/04—Toothed chains

Definitions

  • Avramidis 1 SILENT CHAIN WITI-I IMPROVED ROCKER JOINT [75] Inventor: Stellios Antony Avramidis,
  • a silent chain of the rocker type has groups of links joined together at joints by pins extending through openings at the ends of the links. At each joint one pin is wedged in the openings in one group of links and another pin, in rocking engagement with the first pin, is wedged in the openings in the adjacent group of links.
  • the openings and the pins have complementary substantially straight wedging surfaces converging as they extend outwardly from the center of the openings.
  • the aligned openings of two adjacent groups of links define a channel at each joint which is substantially filled by the two pins at that joint.
  • Silent chains as distinguished from roller type chains, have teeth which engage the teeth of the sprocket on which the chain is received.
  • a typical rocker joint type of silent chain has adjacent sets of links joined by a pair of pins. One of the pins is secured in openings in one of the groups of links and the other pin is secured in openings inthe other group of links. Both pins pass through the openings in both sets of links, and both pins have arcuate faces for rocking engagement to render the chain flexible.
  • Typical silent chains of the rocker joint type are shown in the patents of Howe U.S. Pat. No. 1,188,657; Morse U.S. Pat. No. 1,634,334; Belcher U.S. Pat. No. 1,644,656; Rothman U.S. Pat. No. 1,822,749; and Terepin U.S. Pat. No. 3,213,699.
  • rocker type silent chains will yield, or give, slightly under tension so that shock, or a sudden application of load,-will not fracture the chain.
  • flexible, curved pins are used which flatten slightlyunder load and shock to provide elasticity to the chain.
  • elasticity in the chain is not required or desired, as, for example, in uses where pitch changes because of wear or stretch must be minimal.
  • the silent rocker joint type chain of the present invention is strong, inelastic, and especially resistant to wearf
  • the chain like the typical silent chain of the rocker joint type, has groups of aligned links which are joined to adjacent groups of like links by'pairs of pins.
  • the pins have facing arcuate surfaces for engagement as the groups of links pivot with respect to each other about the pins during flexing of the chain.
  • the openings at the ends of the links of each group in which the pins are received to connect adjacent groups have upper and lower straight converging wedging surfaces.
  • Oneof the pins at each joint is received in the aligned openings of one group of links.
  • the pin has upper and lower straight converging wedging surfaces complementary to the wedging surfaces of the openings so that the pin is wedged tightly into the openings of the group when tension is applied to the chain.
  • the other pin at that joint is received in the openings of the adjacent group of links, and the other pin of that joint is wedged between upper and lower straight converging wedging surfaces of the openings of the adjacent group of links.
  • both pins passed through openings of both connected groups, but, in the present invention, the two pins substantially fill the channel defined by the aligned openings of the two groups of links.
  • the smaller and thinner the pins the greater the flexure of the pins under high fluctuating loads and the greater the elasticity of the chain as well as the greater the possibility of pins shearing.
  • the opening is not so large as to weaken the link ends and the pins are not so small as to flex under load, because the pins are large enough (and the openings small enough) that the pins substantially fill the channel defined by the aligned openings of two adjacent groups.
  • the pins have 'no notches, and the geometry of the pin allows the most efficient use of the space in which the pin is located. This results in smaller pin diameters which require smaller link openings to improve the strength of the link.
  • Each pin of the chain of the present invention is wedged tightly into a group of links when the chain is under tension to minimize wear, and hence elongation, of the chain from long and severe use.
  • the pins may be designed to create a press fit in the openings. Preferably, a small clearance is left behind eachpin so that each pin will. seat tightly between the upper and lower wedging surfaces, and not against the outer edge of the opening.
  • FIG. 1 is a view in perspective of the chain of the present invention mounted on sprockets.
  • FIG. 2 is a plan view of the chain of FIG. 1 with portions being broken away.
  • the chain has a plurality of groups of links GA, GB (FIG. 2) which are connected together bypairs of pins P1, P2 at joints J.
  • every other group of inks consist ofinner links 16a while alternate groups of links (groups GB) consist of inner links 16b and outer links 18.
  • group of links GA consist of a plurality of spaced lateral aligned inner links 16a which extend, at each end, into meshing relationship with the links of groups GB.
  • the links of groups GB consist of a plurality of spaced laterally aligned inner links 16b bounded, at each side, by an outer link 18.
  • the links of all the groups GB extend into intermeshing relationship at each end with the links of the groups GA.
  • the links of each group could be divided into sets of two or more contiguous links with each set spaced from adjacent sets to receive sets of links of adjacent groups of links in intermeshing relationship.
  • each inner link (16a and 16b) has an opening 20 at one end and an opening 22 at the opposite end. Since the openings are identical, except of opposite hand, only the opening 20 will be described.
  • the inner segment 24 of the opening (that is, the segment on the side toward the center of the link) lies on a circle C and extends for approximately 150 about the center M of the circle, which, for convenience of description, may be referred to as the center of the opening.
  • An imaginery line N extending between the center of opening 20 and the center of opening 22 will be considered a longitudinal axis of the link for convenience of description.
  • the longitudinal direction will be considered parallel to axis N and lateral direction will be considered perpendicular thereto.
  • Extending outwardly from the ends of the circular are 24 are a straight wall section, or boundary, 26 on one side of axis N, and a straight wall section, or boundary, 28 on the opposite side of said boundary.
  • These two wall sections which extend, by way of example, in directions approximately 45 apart, converge (without meeting) as they extend toward the outer side of the link. It will be understood -that this angle .is given by. way of illustration, since other angles could be used between the converging wall 1 sections.
  • the wall segments terminate at the ends of the outer segment 30 of the opening, which is a circular are lying on circle C.
  • the opening 20 has inner and outer circular segments lying on a circle C, and two wall segments on opposite sides of the axis N define straight chords of the circle C which converge (without meeting) toward the outer side of the opening.
  • each channel 32 is defined by the openings 20 in one group of links (say group GA) and the openings 22 in the other, adjacent, group GB of links.
  • each channel has two straight oppositely sloping wall segments on one side of the longitudinal axes of the links, two straight oppositely sloping wall segments on the opposite side of the longitudinal axes of the links, and two circular side segments, intersecting said longitudinal axes.
  • the wall segments on each side of the channel 32 converge (without meeting) as they extend away from the center of the channel.
  • opposing wall segments of the channel are inclined to diminish the lateral span S of the channel toward the outer edges OE of the channel.
  • Each channel receives two pins, P1 and P2.
  • the pin P1 extends through all the links of both groups of links GA and GB at the chain joint defined by the pins except the two outer links 18 of group GB.
  • the pin P2 extends through all the links of both groups of links GA and GB at the joint including the two outer links 18 of group GB.
  • the outer links 18, as shown in FIG. 5, have reduced openings 33a and 3317 which are similar but of opposite hand.
  • the pins P2 are tightly received in these openings.
  • the shape of link 18 is substantially similar to the shape of links 16a and 1611, the link is oriented upside down relative to the other links. As shown best in FIG. 1, this is done so that the links 18 act as guide links to keep the chain on the sprockets. It will be understood that a differently shaped link, such as an oval link, could be used as a guide link.
  • the pin Pl has opposite straight walls, 34 and 36 respectively, which converge (without meeting) at an angle equal to the angle of convergence of the opposing wall segments of the opening 20, and which are therefore complementary thereto.
  • the pin P1 is also complementary to the converging walls of opening 22.
  • the pins P2 have similar walls, 38, 40 which are complementary to the opposing straight converging walls of the openings 20 and 22.
  • the pins P1 are secured, when the chain is under tension, by wedging action in openings 20 and 22 of all the links of group GA; the pins P2 are secured, when the chain is under tension, by wedging action in openings 22 and 20 of all the links of group GB.
  • the pins P1 and P2 all have arcuate surfaces 42, 44 for rocking engagement when the chain flexes at the joint.
  • the pins may be slightly over size to fit into the openings by a press fit.
  • the pins when the chain is under tension, the pins are wedged, by means of straight, relatively shallow, sloping, complementary wedging surfaces on pin and opening, against rubbing action in the opening.
  • the pins rock against each other, as in conventional rocker joint type silent chain, to permit flexure of the chain.
  • the two pins at each joint substantially fill the channel through the openings in both groups of links. This is important to add strength, rigidity, and inelasticity to the chain. Since substantially all of the channel is used for the pins, without any significant wasted space, the openings are as small as possible (to strengthen the links) and the pins are as large as possible (to strengthen the joint). The pins do not flex significantly under tension in the chain, and the ends of the links do not yield under such tension. Instead, a rigid, strong chain, without significant elasticity or stretch, is provided. Because the pins are wedged between relatively shallow angled walls, the pins are firmly held against rubbing in the opening.
  • a silent chain having a plurality of groups of links with sprocket engaging teeth, said links having openings at each end, the openings at one end of one group of links aligned with the openings at the opposite end of the adjacent group of links, said aligned openings defining a channel having opposing boundaries each defined by both said one group of links and said adjacent group of links, at least one of said boundaries defined by two substantially straight elongated wedging surfaces inclined to diminish the lateral span of the channel towards the outer edges of the channel, and a pair of pins and only a pair of pins received in said channel, said pins having arcuate facing surfaces for rocking engagement and having opposite surfaces for engagement with the opposing boundaries of the channel, said opposite pin surfaces extending substantially the full width of the pin and being complementary to the opposing channel boundaries for wedging engagement therewith, said pins substantially filling the channel when in rocking engagement.
  • a silent chain having a plurality of groups of links with sprocket engaging teeth, said links having openings at each end, the openings at one end of one group of links aligned with the openings at the opposite end of the adjacent group of links, said aligned openings defining a channel having opposing boundaries each defined by both said one group of links and said adjacent group of links, both of said boundaries defined by two substantially straight elongated wedging surfaces inclined to diminish the lateral span of the channel towards the outer edges of the channel, and a pair of pins and only a pair of pins received in said channel, said pins having arcuate facing surfaces for rocking engagement and each having substantially straight opposing surfaces extending substantially the full width of the pin for engagement with one side of the opposing surfaces of said channel, said opposing pin surfaces being complementary to the opposing channel boundaries for wedging engagement therewith, said pins substantially filling the channel when in rocking engagement.
  • a silent chain having a plurality of groups of links with sprocket engaging teeth, each group of links having openings at each end, each of said openings having substantially straight, elongated converging opposing walls, the openings at one end of each group of links aligned with the openings at the opposite end of the adjacent group of links to define a channel with the opposing walls of one group of links converging oppositely to the opposing walls of the adjacent group, said walls converging as they extend outwardly from the center of the channel, a first pin received through openings of both of said groups of links, said first pin having converging substantially straight opposing walls extending substantially the full width of the pin to be received tightly between the converging walls of the openings in one of said group of links, a second pin received through openings of both of said groups of links, said second pin having converging substantially straight opposing walls extending substantially the full width of the pin to be received tightly between the converging walls of the openings in the adjacent group of links, said pins having facing arcuate surfaces
  • each of said openings comprises opposite arcuate segments and opposite sloping straight segments.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Gears, Cams (AREA)
  • Transmission Devices (AREA)
US00190872A 1971-10-20 1971-10-20 Silent chain with improved rocker joint Expired - Lifetime US3742776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19087271A 1971-10-20 1971-10-20

Publications (1)

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US3742776A true US3742776A (en) 1973-07-03

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US00190872A Expired - Lifetime US3742776A (en) 1971-10-20 1971-10-20 Silent chain with improved rocker joint

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US (1) US3742776A (enExample)
JP (2) JPS511815B2 (enExample)
CA (1) CA975582A (enExample)
FR (1) FR2157324A5 (enExample)
GB (1) GB1358127A (enExample)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010656A (en) * 1974-02-07 1977-03-08 Borg-Warner Corporation Power transmission drive
DE2751320A1 (de) * 1976-11-18 1978-05-24 Borg Warner Antriebs- bzw. zahnkette
US4186617A (en) * 1978-04-06 1980-02-05 Fmc Corporation Rocker joint roller chain
US4266435A (en) * 1978-10-02 1981-05-12 Bendall Wilfrid H Segmental roller drive chain
US4349343A (en) * 1979-12-27 1982-09-14 Pt Components, Inc. Chain for variable speed transmission
US4507106A (en) * 1982-11-17 1985-03-26 Borg-Warner Corporation Power transmission chain
US4581001A (en) * 1980-07-23 1986-04-08 P.I.V. Antrieb Werner Reimers Gmbh & Co. Kg Side-bar chain for infinitely variable cone-pulley transmissions
US4904231A (en) * 1989-02-22 1990-02-27 Magna International, Inc. Rocker joint for chain
US5372554A (en) * 1992-08-31 1994-12-13 Borg-Warner Automotive K.K. Rocker joint chain with crescent shaped apertures
US5445570A (en) * 1994-02-15 1995-08-29 Borg-Warner Automotive, Inc. Chain guide link
US5464374A (en) * 1994-08-03 1995-11-07 Borg-Warner Automotive, Inc. Chain having improved load distribution
US6186921B1 (en) 1998-06-22 2001-02-13 Borg-Warner Automotive K.K. Rocker joint silent chain having a joint pin thicker than a corresponding rocker pin
US6277046B1 (en) * 1999-03-03 2001-08-21 Tsubakimoto Chain Co. Silent chain
US6387003B2 (en) * 1999-12-16 2002-05-14 Tsubakimoto Chain Co. Chain with improved rocker pin joint structure
US6419604B2 (en) * 1998-12-24 2002-07-16 Tsubakimoto Chain Co. Double-meshing-type silent chain drive and sprocket used therein
US6439378B1 (en) 2001-08-28 2002-08-27 The Laitram Corporation Modular conveyor belt with rolling hinge pin pairs
US20020147065A1 (en) * 2001-04-04 2002-10-10 Rexroth Mecman Gmbh Tooth chain, in particular transport tooth chain
US6494800B1 (en) * 1999-08-02 2002-12-17 Tsubakimoto Chain Co. Wear-resistant silent chain
US6749059B2 (en) 2001-08-28 2004-06-15 Laitram, L.L.C. Modular conveyor belt with two-part hinge pin
US20040176201A1 (en) * 2003-03-06 2004-09-09 Borgwarner Inc. Power transmission chain with ceramic joint components
US20080020884A1 (en) * 2006-07-13 2008-01-24 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Plate-link chain for a motor vehicle drive system
US20080067040A1 (en) * 2006-08-30 2008-03-20 Laitram, L.L.C. Abrasion-resistant hinge rods in modular plastic conveyor belts
US20080287235A1 (en) * 2007-04-25 2008-11-20 Jtekt Corporation Power transmitting chain and power transmitting apparatus
US20080312020A1 (en) * 2007-05-29 2008-12-18 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Plate-link chain
US20090192000A1 (en) * 2007-02-13 2009-07-30 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Toothed plate-link chain
US20100099531A1 (en) * 2007-01-31 2010-04-22 Kozue Matsumoto Power transmission chain and power transmission system including the same chain
US20120071287A1 (en) * 2010-09-21 2012-03-22 Tsubakimoto Chain Co. Silent chain having deformable guide plates
US20130165285A1 (en) * 2011-12-22 2013-06-27 Tsubakimoto Chain Co. Chain
US20150300450A1 (en) * 2012-12-12 2015-10-22 Schaeffler Technologies AG & Co. KG Plate-link chain
US20160040751A1 (en) * 2014-08-06 2016-02-11 Tsubakimoto Chain Co. Silent chain transmission device
US20160040750A1 (en) * 2014-08-06 2016-02-11 Tsubakimoto Chain Co. Silent chain and silent chain transmission device
US20160040752A1 (en) * 2014-08-06 2016-02-11 Tsubakimoto Chain Co. Silent chain

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54112435A (en) * 1978-02-22 1979-09-03 Tsubakimoto Morse Co Ltd Silent chain
US5562559A (en) * 1995-04-13 1996-10-08 Borg-Warner Automotive, Inc. Rocker joint chain with crescent shaped aperture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643485A (en) * 1951-04-26 1953-06-30 Tennessee Valley Authority Production of lightweight aggregate from molten slag
US2669879A (en) * 1951-07-06 1954-02-23 Link Belt Co Power transmission chain
US3535871A (en) * 1966-08-15 1970-10-27 Borg Warner Method for making chain links
US3540302A (en) * 1969-10-23 1970-11-17 Wilfrid H Bendall Segmental roller chain

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643485A (en) * 1951-04-26 1953-06-30 Tennessee Valley Authority Production of lightweight aggregate from molten slag
US2669879A (en) * 1951-07-06 1954-02-23 Link Belt Co Power transmission chain
US3535871A (en) * 1966-08-15 1970-10-27 Borg Warner Method for making chain links
US3540302A (en) * 1969-10-23 1970-11-17 Wilfrid H Bendall Segmental roller chain

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010656A (en) * 1974-02-07 1977-03-08 Borg-Warner Corporation Power transmission drive
DE2751320A1 (de) * 1976-11-18 1978-05-24 Borg Warner Antriebs- bzw. zahnkette
US4130026A (en) * 1976-11-18 1978-12-19 Borg-Warner Corporation Power transmission drive
US4186617A (en) * 1978-04-06 1980-02-05 Fmc Corporation Rocker joint roller chain
US4266435A (en) * 1978-10-02 1981-05-12 Bendall Wilfrid H Segmental roller drive chain
US4349343A (en) * 1979-12-27 1982-09-14 Pt Components, Inc. Chain for variable speed transmission
US4581001A (en) * 1980-07-23 1986-04-08 P.I.V. Antrieb Werner Reimers Gmbh & Co. Kg Side-bar chain for infinitely variable cone-pulley transmissions
US4507106A (en) * 1982-11-17 1985-03-26 Borg-Warner Corporation Power transmission chain
US4904231A (en) * 1989-02-22 1990-02-27 Magna International, Inc. Rocker joint for chain
US5372554A (en) * 1992-08-31 1994-12-13 Borg-Warner Automotive K.K. Rocker joint chain with crescent shaped apertures
US5445570A (en) * 1994-02-15 1995-08-29 Borg-Warner Automotive, Inc. Chain guide link
US5464374A (en) * 1994-08-03 1995-11-07 Borg-Warner Automotive, Inc. Chain having improved load distribution
US6186921B1 (en) 1998-06-22 2001-02-13 Borg-Warner Automotive K.K. Rocker joint silent chain having a joint pin thicker than a corresponding rocker pin
US6419604B2 (en) * 1998-12-24 2002-07-16 Tsubakimoto Chain Co. Double-meshing-type silent chain drive and sprocket used therein
US6277046B1 (en) * 1999-03-03 2001-08-21 Tsubakimoto Chain Co. Silent chain
US6494800B1 (en) * 1999-08-02 2002-12-17 Tsubakimoto Chain Co. Wear-resistant silent chain
US6387003B2 (en) * 1999-12-16 2002-05-14 Tsubakimoto Chain Co. Chain with improved rocker pin joint structure
US20020147065A1 (en) * 2001-04-04 2002-10-10 Rexroth Mecman Gmbh Tooth chain, in particular transport tooth chain
US6439378B1 (en) 2001-08-28 2002-08-27 The Laitram Corporation Modular conveyor belt with rolling hinge pin pairs
WO2003020618A1 (en) * 2001-08-28 2003-03-13 The Laitram Corporation Modular conveyor belt with rolling hinge pin pairs
US6749059B2 (en) 2001-08-28 2004-06-15 Laitram, L.L.C. Modular conveyor belt with two-part hinge pin
US20060276286A1 (en) * 2003-03-06 2006-12-07 Mott Philip J Power Transmission Chain with Ceramic Joint Components
US7682273B2 (en) * 2003-03-06 2010-03-23 Borgwarner Inc. Power transmission chain with ceramic joint components
US7201687B2 (en) * 2003-03-06 2007-04-10 Borgwarner Inc. Power transmission chain with ceramic joint components
US20040176201A1 (en) * 2003-03-06 2004-09-09 Borgwarner Inc. Power transmission chain with ceramic joint components
US20080020884A1 (en) * 2006-07-13 2008-01-24 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Plate-link chain for a motor vehicle drive system
US8057343B2 (en) * 2006-07-13 2011-11-15 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Plate-link chain for a motor vehicle drive system
US20080067040A1 (en) * 2006-08-30 2008-03-20 Laitram, L.L.C. Abrasion-resistant hinge rods in modular plastic conveyor belts
US7438179B2 (en) 2006-08-30 2008-10-21 Laitram, L.L.C. Abrasion-resistant hinge rods in modular plastic conveyor belts
US20100099531A1 (en) * 2007-01-31 2010-04-22 Kozue Matsumoto Power transmission chain and power transmission system including the same chain
US8894524B2 (en) * 2007-01-31 2014-11-25 Jtekt Corporation Power transmission chain and power transmission system including the same chain
US20090192000A1 (en) * 2007-02-13 2009-07-30 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Toothed plate-link chain
US8888634B2 (en) * 2007-02-13 2014-11-18 Schaeffler Technologies Gmbh & Co. Kg Toothed plate-link chain
US20080287235A1 (en) * 2007-04-25 2008-11-20 Jtekt Corporation Power transmitting chain and power transmitting apparatus
US20080312020A1 (en) * 2007-05-29 2008-12-18 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Plate-link chain
CN102434628A (zh) * 2010-09-21 2012-05-02 株式会社椿本链条 导向板
US8657711B2 (en) * 2010-09-21 2014-02-25 Tsubakimoto Chain Co. Silent chain having deformable guide plates
US20120071287A1 (en) * 2010-09-21 2012-03-22 Tsubakimoto Chain Co. Silent chain having deformable guide plates
US20130165285A1 (en) * 2011-12-22 2013-06-27 Tsubakimoto Chain Co. Chain
US8998758B2 (en) * 2011-12-22 2015-04-07 Tsubakimoto Chain Co. Chain
US20150300450A1 (en) * 2012-12-12 2015-10-22 Schaeffler Technologies AG & Co. KG Plate-link chain
US10344823B2 (en) * 2012-12-12 2019-07-09 Schaeffler Technologies AG & Co. KG Plate-link chain
US20160040751A1 (en) * 2014-08-06 2016-02-11 Tsubakimoto Chain Co. Silent chain transmission device
US20160040750A1 (en) * 2014-08-06 2016-02-11 Tsubakimoto Chain Co. Silent chain and silent chain transmission device
US20160040752A1 (en) * 2014-08-06 2016-02-11 Tsubakimoto Chain Co. Silent chain
US9618081B2 (en) * 2014-08-06 2017-04-11 Tsubakimoto Chain Co. Silent chain and silent chain transmission device
US9651113B2 (en) * 2014-08-06 2017-05-16 Tsubakimoto Chain Co. Silent chain

Also Published As

Publication number Publication date
FR2157324A5 (enExample) 1973-06-01
GB1358127A (en) 1974-06-26
DE2233789A1 (de) 1973-05-03
JPS4850145A (enExample) 1973-07-14
CA975582A (en) 1975-10-07
JPS52110362A (en) 1977-09-16
JPS511815B2 (enExample) 1976-01-21
DE2233789B2 (de) 1976-08-05
JPS5520092B2 (enExample) 1980-05-30

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