Links Patents (Class 59/84)
  • Publication number: 20040250528
    Abstract: A chain tool used to disassemble or assemble a chain includes a set of spacers allowing micro adjustability to facilitate first and second anvil surface contact with chain plates when chain connection pins are being displaced or replaced to disassemble or reassemble a chain.
    Type: Application
    Filed: June 29, 2002
    Publication date: December 16, 2004
    Inventor: Bradley B. Coleman
  • Patent number: 6782689
    Abstract: In a method of making a chain, in particular a round steel chain of tempered steel, a chain strand is produced in a conventional manner and subject to the usual heat treatment of normalizing, hardening and annealing. Annealing is implemented at a low temperature level of below 200° C. A tempered steel is used having a microstructure which, after hardening and annealing, has a stable residual austenite content between 3% and 10%. After the final calibration process, the chain strand is subjected to a thermal aftertreatment at a temperature between 190° C. and 250° C. This relieves stress resulting from the calibration process and the associated work-hardening. In this way, the notch impact energy capacity is enhanced.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: August 31, 2004
    Assignee: Thiele GmbH & Co. KG
    Inventor: Günther Philipp
  • Patent number: 6782687
    Abstract: A roller chain for moving a web of textile material in a tenter frame. The roller chain has inner members flexibly joined to outer members in an alternating manner with a sleeve and a bolt. A running roller having an inner ring; an outer ring and sealing rings forming a ball bearing assembly is mounted on the sleeve. The sealing rings substantially seal ball bearings enclosed in the running roller. The sealing ring has a spacing element consisting of individual metallic inserts distributed approximately equally around a circumference of the sealing ring. The spacing element transmits axial force applied to an inner tab of an inner member to an inner ring of the running roller. The sealing ring has a lubrication groove formed thereon in fluid communication with a lubrication hole on a sleeve and a lubrication channel in an interior of the bolt for lubricating the ball bearing.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: August 31, 2004
    Assignee: A. Monforts Textilmaschinen GmbH & Co.
    Inventor: Konrad Mingers
  • Publication number: 20040093848
    Abstract: A chain comprises links formed from bar stock having a specific cross-section. In a preferred embodiment, which is a chain of 16 mm size, the cross-section comprises four convex arcuate sides (10a), (10b), (10c) and (10d), each of which has a radius of curvature at least 10% greater than the chain size (i.e. at least 10% greater than 8 mm) and preferably at least 15% greater than the chain size. In this way, a chain is produced which has the profile which is similar to the profile attained by the chain after a significant period of wear, involving a significant increase in the surface-to-surface contact between adjacent links, reducing the effective wear rate, and reducing the rate of effective lengthening of the chain due to wear.
    Type: Application
    Filed: September 22, 2003
    Publication date: May 20, 2004
    Inventors: Roger Dudley, Lakbir Ghaman
  • Publication number: 20040093849
    Abstract: A preferred embodiment of an anti-backflex chain includes one or more connecting links pivotally attached to one or more roller links. The connecting links and the roller links each include a blocking member attached to a pair of side plates. The blocking member is attached to a link at a point latterly displaced from a longitudinal axis of the link. The blocking members attached to the connecting links have an exterior periphery engageable with an exterior periphery of the blocking members attached to the roller links. The blocking members function as stops to prevent further pivotal movement of the connecting link relative to an adjacent roller link. The blocking members may have a variety of shapes, including cylindrical and box-shaped. Multiple connecting links can be attached to multiple roller links to create a chain of a desired length.
    Type: Application
    Filed: November 5, 2003
    Publication date: May 20, 2004
    Inventors: Timothy N. Thomas, Bradley R. Carver
  • Patent number: 6714400
    Abstract: The invention concerns a particular link structure (1) for a wristwatch including decorative elements made of hard materials such as ceramics. The sintering step carried out during manufacturing of these decorative elements increase the maximum uncertainties on their dimensions. The parts thereby obtained consequently do not have sufficiently precise dimensions to avoid the appearance of gaps at their common junctions. In order to overcome this drawback, the link (1) according to the invention includes a mechanical device (17, 26, 29, 34, 37, 53) allowing a precise adjustment to be made of the relative positions of these different decorative elements and consequently continuous junctions to be obtained between them.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: March 30, 2004
    Assignee: Montres Rado S.A.
    Inventors: Christophe Guerry, Sébastien Bolzt, Steeve Gerber
  • Patent number: 6655832
    Abstract: A structural component made of hard material for a wristwatch, characterised in that it includes a hole fitted with an inner threading which is integral with said component, said threading being directly obtained by injection and thus without removing any material of said component for example by machining.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: December 2, 2003
    Assignees: Montres Rado SA, Comadur S.A.
    Inventors: Michael Bach, Christophe Guerry, Olivier Bucher
  • Patent number: 6571578
    Abstract: A reversible ornamental article of jewelry having a plurality of ornamental links hinge ably secured to one another to form a flexible strand of jewelry, which can be in the form of a necklace or bracelet. The geometric configurations of the links in one planar surface differ from one another and also differ from one another in the opposite or reverse planar surface so that the jewelry article can be worn to display the ornamental geometric configurations in either planar surface. A pin or other connecting device passing through each link attaches the links to one another. This secures the links together to allow the jewelry article to be both flexible and reversible.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: June 3, 2003
    Inventor: Hasan Akyol
  • Patent number: 6308510
    Abstract: A drive chain comprises a plurality of inner links (1) interconnected by intermediate outer links and elongate pins (7) that are received in apertures in the inner and outer links. There is substantial clearance between the outer link and the corresponding inner links so as to permit flexion of the adjacent elongate pins in a direction substantially parallel to the length of the chain. The outer link may be in the form of a separate plate (6) or may be an integral part of the pins. In one embodiment the outer link is a crimped plate that offers resilience in the direction of the chain. The drive chains provide for shock absorption.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: October 30, 2001
    Assignee: Renold PLC
    Inventor: Michael Charles Christmas
  • Patent number: 6298650
    Abstract: The present disclosure provides a secure yet easily adjustable link design for use in interconnected link jewelry and watches. A link for a bracelet is disclosed that allows for easy adjustment in the length of the bracelet, utilizing a bar and spring system. To remove a link from the bracelet, the links must be at approximately a right angle, force must be applied outwardly to the link with the spring from which a bar is to be removed, and the links easily separate. Similarly to couple links, the links must be at approximately a right angle. When the links are at approximately a right angle, the bar of the first link can enter the spring of the second link. When the links are at any other angle, the bar is secured in the spring and cannot be removed or dislodged. The disclosed bar and spring system allows for a secure yet easily adjustable link system.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: October 9, 2001
    Assignee: Fossil, Inc.
    Inventors: Samantha Amundsen, Fung Chi Sun, Daniel M. Smith
  • Publication number: 20010022074
    Abstract: Three structural components jointly constituting a single guide link of a silent chain, i.e.
    Type: Application
    Filed: March 17, 2001
    Publication date: September 20, 2001
    Inventor: Kazuhiko Shimaya
  • Patent number: 6223517
    Abstract: In the case of a connecting chain link for link chains having two connecting-link parts (1, 2), their ends (4, 5), which are connected to each other via a respective longitudinal web (3), are held together in the closed position by means of a respective stub (6) gripping into a pocket (7). While each stub (6) is provided with an essentially U-shaped retaining web (19) which has clearances (22, 23) in the region of its limbs (20, 21) running parallel to each other, each pocket (7) is provided with a U-shaped retaining groove (25) whose one wall (24) has recesses (26, 27). The size and position of the clearances (22, 23) and of the recesses (26, 27) make it possible for the connecting-link parts (1, 2) to be joined together in a position in which their stubs (6) and pockets (7) partially overlap.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: May 1, 2001
    Assignee: RUD-Kettenfabrik Rieger & Dietz GmbH u. Co.
    Inventors: Zvonimir Bogdan, Hans-Jürgen Scherle
  • Patent number: 6220011
    Abstract: In the case of a connecting chain link for link chains having two connecting-link parts (1, 2) which can be displaced by limited amounts in the longitudinal direction of the connecting link, in order to open and close the connecting link, and which are each provided with a stub (6) at one end (4) and at the other end (5) with a pocket (7) to hold the stub (6), in the closed position the connecting-link parts (1, 2) are locked in place with the aid of a central locking element (10) which rests in shell-shaped supporting surfaces (9) of two projections (8) which protrude into the clear interior of the connecting link.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: April 24, 2001
    Assignee: RUD-Kettenfabrik Rieger & Dietz GmbH u. Co.
    Inventors: Hans Dalferth, Zvonimir Bogdan, Hans-Jürgen Scherle, Alfred Puppel
  • Patent number: 6216434
    Abstract: In a chain lock with essentially U-shaped lock parts (1, 2), each lock part has an inner limb (4) and an outer limb (3) which are connected to each other by a yoke. The outer and inner limbs (3, 4) are connected to each other in a closed position of the lock by three pairs of holding teeth (5, 8; 6, 9; 7, 10). For increasing the strength of the lock, the holding teeth (6, 9) of the central pairs of holding teeth, and the holding teeth (5, 8) of the pairs of holding teeth arranged in the region of the ends of the inner limbs (4), have a greater height (H) than the holding teeth (7, 10) of the other pairs of holding teeth. All holding teeth (5-10) support each other only over a central supporting zone which is limited in its height.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: April 17, 2001
    Assignee: RUD-Kettenfabrik Rieger & Dietz GmbH u. Co.
    Inventors: Hans Dalferth, Hans Bauer
  • Patent number: 6176073
    Abstract: A coupling link (1) comprises a unitary body having a first main limb (2), a second main limb (3), and a third limb (4) which forms an open loop (6), one end of which extends between the first and second main limbs. Loading of ropes, slings or protection onto the coupling limnk (1) is simply a matter of temporarily deforming the rope or device and looping it over the third limb (4). The required unloading action is too complex for it to happen accidently. The three dimensional topology of the coupling link (1) eliminates the requirement for a spring biased gate and is therefore inherently safer than a conventional karabiner. In a preferred example, the first and second main limbs are joined to form a closed loop (5).
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: January 23, 2001
    Inventor: Thomas Adam Shine
  • Patent number: 6170248
    Abstract: A chain link comprising a shank portion connected to a pair of eye portions at each end of the shank so as to form a dog-bone shape with eyelets at the ends. The eyelets are formed by a Y-shaped root section that is connected to a half-torus-shaped hat section. The cross-section profile of the shank portion is round, square, or, alternatively, an I-beam shape. The eye portions include an inner portion having an arcuate inner surface and an outer portion being substantially rectangular in cross-section. The chain link is preferably made of a high-strength alloy steel and is especially well-suited for use in dragline hoist chains.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: January 9, 2001
    Assignee: Columbia Steel Casting Co., Inc.
    Inventors: Garrick J. Ianello, Bruce C. Johnson
  • Patent number: 6105356
    Abstract: A drive chain has a plurality of links (1) each comprising a pair of opposed cranked link plates (2). Each link plate (2) has two connection apertures (7) and is connected to an adjacent link plate (2) by a pin (6) passing through overlapping connection apertures. An aperture (7) at one end of each link plate is fitted with a sleeve (11) in which said pin (6) is releasably engaged by means of a key connection. The sleeve (11) is connected to said link plate (2) by means of an interference fit with the respective connection aperture (7).
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: August 22, 2000
    Assignee: Renold PLC
    Inventors: Bryan William Capstick, Edward Joseph Brownhill, Michael Charles Christmas
  • Patent number: 5974779
    Abstract: An coupling link or anchor link is disclosed. The link includes a pin for a coupling link that increases the ease with which links are disassembled and maintained. The pin structure provides a means for dispensing or delivering grease into the interior of the link. A lubricant is also disclosed for improving the corrosion resistance of conventional links as well as the disclosed links.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: November 2, 1999
    Assignee: Elisha Technologies Co. LLC
    Inventors: William L. Orscheln, Robert L. Heimann
  • Patent number: 5970701
    Abstract: The present invention features a chain of serially connected, universal links. The chain is movable in one direction, but restricted in movement in the opposite direction. The chain consists of a number of substantially identical links. Each of the links has an elongated body portion with abutments at distal ends thereof. The abutments engage respective abutments of neighboring links. Connected to the body portion of each link are two leg portions. The two leg portions each have an aperture for receiving a pin. At least one of the leg portions may be bifurcated into two, substantially parallel sides. The two sides of one of the bifurcated leg portions are spaced apart from one another so as to contain the other leg portion of a neighboring link. This other leg portion may be solid. Each leg extends beyond the distal ends of the body portion, so that, when the links are connected to one another, the aperture of one of the legs is aligned with the aperture of a neighboring leg.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: October 26, 1999
    Inventors: Garey Roden, Neil Payne
  • Patent number: 5966923
    Abstract: A conventional chain capable of reserving lubricating oil is complex in shape and expensive since each chain plate is formed with countersunk recesses and through-openings. Since the recesses are formed in an overlap region, the chain tends to rattle, producing noise. In the present invention according to which lubricating oil is fed toward a connecting pin, the lubricating oil is transferred to the connecting pin to effect intended lubrication. Part of the lubricating oil thus fed adheres to the recessed surfaces of the recesses and is prevented from immediately flowing down by viscous friction resistance and surface tension in the recessed surfaces. Thus, the oil is held in its adhering state. The lubricating oil gradually flows down to be used for lubrication as the chain moves. Thereby, after the chain has passed by an oil feeder, the connecting pin of the chain stays in such a state that oil is fed continuously for a long time.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: October 19, 1999
    Assignee: Daifuku Co., Ltd.
    Inventor: Jiro Nakamura
  • Patent number: 5966924
    Abstract: A chain connecting link has a C-shape main part having a pair of ends with confronting and spaced end surfaces and a filler part engaged between the ends and having a pair of oppositely directed end surfaces confronting the end surfaces of the main-part ends. Respective bodies of weld metal are engaged between the main-part end surfaces and the filler-part end surfaces so that the filler part solidly interconnects the ends of the main part. The parts are both made of tempered and annealed steel. Each of the end surfaces can be formed by a pair of substantially planar faces meeting at a straight edge. The straight edges extend generally in a plane including a longitudinal center axis of the link and the faces form four laterally open V-shaped notches each holding a respective such body of weld metal. The faces of each surface lie at an obtuse angle to each other. Normally the edges are rounded.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: October 19, 1999
    Inventor: Josef Schulte-Feldmann
  • Patent number: 5956936
    Abstract: An elongated chain link comprising a pair of opposing U-shaped end portions connected by a pair of parallel leg portions. The leg portions are connected to each other by a pair of crosswise tie-bars situated toward the end portions approximately equally offset from the cross-axial centerline of the link. Additional crosswise tie-bars may be added to prevent the legs of the link from collapsing together when a large side-load is applied to the link. The leg portions are substantially square in cross section, while the end portions comprise an inner portion having an arcuate inner surface and an outer portion being substantially rectangular in cross-section. The chain link is preferably made of a high-strength cast alloy steel and is especially well-suited for use in dragline drag and hoist chains.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: September 28, 1999
    Assignee: Columbia Steel Casting Co., Inc.
    Inventors: Garrick J. Ianello, Bruce C. Johnson
  • Patent number: 5934062
    Abstract: Link for chain having an extent about an aperture defines a section which is wider near the inside with the section being usually concave outward on each side, A junction link comprises a C member and a bridging member with a cross section generally similar to the link. A method of assembling the bridging member to the C member involves providing two pairs of aligned apertures. In each pair a rivet like member with a head end and a free end has its free end inserted through the aligned apertures, after which a head is formed on the free end by arc welding.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 10, 1999
    Assignee: J.O. Bernt & Associates Limited
    Inventors: Barry C. Forster, Jorgen O. Bernt
  • Patent number: 5778655
    Abstract: A chain link (1) consists of two loops (2a, 2b) and two sides (3a, 3b), and a post (5) welded in between the chain link's sides (3a, 3b). The post (5) has sections (7) of reduced thickness against the chain link's sides (3a, 3b) in order to produce weld grooves for welding the post (5) to the chain link's sides (3a, 3b) with a through-weld. A sacrificial anode (9) is affixed around the chain link's post (5), by means of casting, welding or clamping.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: July 14, 1998
    Assignee: Kvaerner ASA
    Inventor: Espen Lange
  • Patent number: 5626013
    Abstract: For the movement of work-in-process materials on a storage or manufacturing floor, a grid of computer-controlled, unmanned jib cranes is established. The cranes' operational areas overlap. A crane can place an individual part or a magazine of parts on an elevated, revolving pedestal which then automatically rotates 180 degrees so that the next crane in line can pick up these materials and move them into its own area. The hand of the crane is moved so that it can place its load directly into the position in the machine tool where it undergoes its next process. The arm of the jib crane is fully retractable and computer-controlled, using a laser integrated into the computer's system to aid in detecting the crane's hand location at each delivery position that the crane visits. The jib cranes can lift parts up to a level that places them near the ceiling of the manufacturing floor area.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: May 6, 1997
    Inventor: John R. Schneider
  • Patent number: 5596869
    Abstract: Disclosed is a chain formed from a series of at least two successive links that are joined end-to-end one to another. One of the two links has a gripping element for holding the other link at a particular position relative to the first link so that the chain can be lengthened or shortened without adding or removing a link or links.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: January 28, 1997
    Inventor: Beat Messerer
  • Patent number: 5469697
    Abstract: The present invention provides a die forged stud link chain which comprises substantially .theta.-shaped complete stud links (1) (FIG. 2) formed by means of die forging and substantially .epsilon.- shaped semi-finished stud links (2) (FIG. 3) feasible to be formed into a exceeding 45.degree.. The stud link chain can be produced mainly by using a die forging process and a minimum welding process, so that a decrease in the shearing stress applied to the shoulder part due to bending can be avoided. Further, steel materials superior in decrease of the shearing stress and in the tensile strength can be employed. The resulting stud link chain is lightweight and superior in resistance to fatigue failure.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: November 28, 1995
    Assignee: Kuroki Chain Mfg., Co., Ltd.
    Inventor: Katsuhiko Kuroki
  • Patent number: 5461852
    Abstract: A chain comprising links and pins formed from fiber reinforced thermoplastic resin is disclosed. Each link has bores, and each pin has a body for insertion through the bores of adjoining links to connect the links pivotally. The body has two diametrically opposite rows of grooves formed in its peripheral surface, has a front end from which an annular shell projects coaxially and an axial protrusion extends through the shell coaxially, and has a rear end formed with a flange. The shell has a radially outwardly projecting shoulder formed around its mid-portion, has a frustoconical front end portion, and has radially extending slits which makes the shell radially compressible. The link which has a bore positioned at the inlet for the insertion of the pin, has bosses which are engageable with the flange for holding the pin against rotation to maintain the rows of grooves at right angles with respect to a longitudinal direction of the links.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: October 31, 1995
    Assignee: Hitachi Metals, Ltd.
    Inventor: Hiromitsu Nagamatsu
  • Patent number: 5347498
    Abstract: The links, which are hinged together constituting the bracelet, comprise a core (2) formed from machinable metal and provided with hinges (14), sandwiched between two protection parts (4, 6). The protection parts are maintained in place by at least one stud (10) fixed to one of the protection parts (6) and extending through piercings (12, 13) formed respectively in the core (2) and in the other protection part (4), the stud (10) being retained in said piercings by a swaged rivet head at its distal end (10a). Two lateral portions (8) of one of the protection parts (6) extend opposite the lateral faces of the link.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: September 13, 1994
    Assignee: Montres Rado S.A.
    Inventors: Eric Loth, Joseph Fray
  • Patent number: 5308292
    Abstract: A plastic cable chain having two free ends comprises at least two metallic cables jacketed in a plastic material and spaced apart by cross-linked spacer members. Each of the cables have opposing free ends with a respective eyelet for facilitating the coupling of the eyelets on opposing cable free ends. The eyelets are connected by a connecting link to define thereby a continuous substantially plastic cable chain. In a preferred embodiment, the eyelets are formed by the free end of the cable being bent over and joined to another part of the cable to form a closed loop. The invention also relates to a method of manufacturing a length of the plastic cable as well as to a method of coupling the ends of the plastic cable together to make a continuous chain.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: May 3, 1994
    Assignee: Xerox Corporation
    Inventor: Anil Mistry
  • Patent number: 5293916
    Abstract: A log debarking chain flail apparatus 10 is illustrated in FIGS. 1 and 2 removing bark from a log 12. The apparatus includes two opposing flail assemblies 18 and 20 having a plurality of chain flails 22 that extend radially outward as the assembly is rotated. Each of the chain flails include a plurality of chain links extending from an inner end 22a to an outer end 22b in which each of the links has a longitudinal segment 46. A tooth 50 is formed on one or more of the longitudinal segments 46 for scraping and/or cutting the bark from the exterior 14 of the log 12.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: March 15, 1994
    Inventor: James D. Kucherry, Sr.
  • Patent number: 5269129
    Abstract: A chain formed of links made of fiber-reinforced resin composite material. Each link has a terminal loop located at each axial end of a long strap. Loops, located at adjacent ends of successive links, are joined by relatively short connecting links that overlap bushings located within each of the loops. The bushings and connecting links are held in position at each lateral side of the links by pins and washers. A ring surrounds each link where the strap flares to form each terminal loop. The loops may be unitary or spaced laterally to receive within the space a unitary loop of an adjoining link aligned axially with the other loop. A pin located within the loops supports washers at each lateral side of the links to maintain the position of the links and to transfer load between the links.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: December 14, 1993
    Assignee: Aluminum Company of America
    Inventor: Brian T. Lundy
  • Patent number: 5249415
    Abstract: A link chain, in particular a flyer chain, comprising plate-like chain links joined together by means of link pins has protective surfaces of non-metallic covers extending over the width of the outer surface of the chain links.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: October 5, 1993
    Assignee: Rexnord Kette GmbH & Co. KG
    Inventor: Ludger Frenker-Hackfort
  • Patent number: 5247789
    Abstract: A plastic chain includes chain elements that are connected to one another by way of connecting shafts, rods or similar devices. The chain elements include a recess in which is received a connecting element. The connecting element can have a guide element extending therefrom for guiding the chain, and a locking element extending therefrom for restraining axial movement of the connecting shafts.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: September 28, 1993
    Assignee: SKF Specialty Products AB
    Inventors: Goran Abbestam, Leif Lachonius
  • Patent number: 5244256
    Abstract: A haulage chain for a mineral winning installation, comprises a plurality of first links and a plurality of second links alternating with one another along the longitudinal extent of the chain. Each first link defines a single closed loop and each second link defines three closed loops, two of which are provided by opposite end portions of the second link and lie in a common plane and the other of which is provided by an intermediate portion between the two end portions and lies in a plane normal or substantially normal to the common plane of the two end loops. The first links each pass through opposite end portions of a pair of adjacent second links and maintain a substantially even pitch between the said end portions of all the second links.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: September 14, 1993
    Assignee: Meco A.F.C. Limited
    Inventors: Peter Howard, Terence W. Scrutton
  • Patent number: 5215616
    Abstract: A link assembly for a lightweight, non-metallic, conveyor or load transmission chain having significantly greater strength and other performance improvements compared to previous non-metallic chain links is disclosed. Each link assembly includes: a pair of identical sidebars each comprised of high-strength filamentary material wound in an elongated loop configuration and fixed in a matrix of hardened resin; a connecting pin having a stiff reinforced composite core and a skin-tight sleeve of non-abrasive material; low friction bushing means between the sidebars and connecting pin; and retaining means for holding the assembly together.Methods of making the unique sidebar and connecting pin components are also disclosed.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: June 1, 1993
    Assignee: Envirex Inc.
    Inventor: John A. Fillar
  • Patent number: 5199197
    Abstract: A sidebar is provided for an offset sidebar trenching chain. The sidebar has an inner edge which slides along a boom of a trenching machine, when the trenching chain is in use. The sidebar is induction hardened through a portion thereof extending from the inner edge, for increased resistance to wear due to friction.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: April 6, 1993
    Assignee: Rexnord Corporation
    Inventor: John H. Thuerman
  • Patent number: 5197274
    Abstract: A link assembly for a watch or other type of link bracelet is described. The link assembly includes a first link member having a first bore running therethrough and a second link member having a second bore running therethrough axially aligned with the first bore. A longitudinal pin having a non-threaded portion is extended through the first bore and a portion of the second bore for enabling the first link member to pivotally rotate with respect to the second link member. A threaded screw is used to occupy at least some of the remaining portion of the second bore for maintaining the non-threaded pin within the two bores.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: March 30, 1993
    Assignee: E. Gluck Corporation
    Inventor: Refael Braun
  • Patent number: 5157912
    Abstract: A push-pull chain having a lock mechanism provided between inner links and outer links, which are rotatably coupled together by link pins, to thereby permit the mutual pivotal movement of both links to be restricted. The lock mechanism is provided to both links on an axial line parallel to each link pin. As a lock pin moves parallel on the axial line and it is fitted in both links, the mutual pivotal movement of the links is locked.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: October 27, 1992
    Assignee: Ryoei Engineering Co., Ltd.
    Inventors: Masayuki Yoshiga, Takuya Nomura
  • Patent number: 5133179
    Abstract: The repair link is a C-shaped member and a junction member, the junction member having enlarged tongues with narrower roots and the C shaped member is complementary. Welding to hold the junction member in place preferably is caused to adhere to the C-shaped member rather than the junction member.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: July 28, 1992
    Assignee: J. O. Bernt & Associates Limited
    Inventors: Jorgen O. Bernt, Barry C. Forster
  • Patent number: 5107672
    Abstract: A rigid drive assembly is constructed of two interconnected, flexible chain elements.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: April 28, 1992
    Assignee: The Will-Burt Company
    Inventor: Harry E. Featherstone
  • Patent number: 5092118
    Abstract: A chain link having a pair of spaced sidebars provided with a set of aligned bores and a round pin positioned within so as to extend through the aligned bores utilizes sidebars and a pin which cooperate in a manner which positively secures the pin in position within the bores and which accommodates a removal of the pin from the bores in a manner which prevents damage to the link components. The pin has a head on one end and an annular rib on its other end, and the sidewall of one of the aligned bores possesses a diameter which tapers in size from one end of the bore to the other end thereof and is adapted to flex outwardly to accommodate the passage of the annular rib therethrough.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: March 3, 1992
    Assignee: Jeffrey Chain Corporation
    Inventor: Paul J. VanDeMark
  • Patent number: 5056306
    Abstract: In a process for producing a metal plate in such a way that it can be joined up to form a chain, use is made of a casting or forging tool, which forms a base part and a sole part of the plate, a specific sole part from several sole parts being associated with the base plate. The tool comprises at least one part forming the base part of the plate and another part forming the sole part of the plate. The resulting plate has reception rings on one plate side and an equal number of ring notches on the other plate side and side guides on the plate underside and at least one engagement gap.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: October 15, 1991
    Inventor: Hans-Rudolf Zepf
  • Patent number: 5038557
    Abstract: A watch band having length adjusting function is disclosed. The band is formed by connecting a plurality of link units (14). Each of the link units comprises a first link (10) and a second link (11). The first and second links (10, 11) have bodies (10b, 11b) and projections (10c, 11c) projecting from inner portions of the bodies. The bodies have holes (10a, 11a) extending in the lateral direction, and the projections have perforated holes (15) extending in the lateral direction. Adjacent link units are connected by engaging a pin with the holes. Structure (12a, 13) is provided for preventing the first and second links from moving in the lateral direction in an approximately flat state, and for allowing the lateral movement of the links when both the links are relatively angularly displaced about the pin.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: August 13, 1991
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Shigeru Otsuki, Kouji Ushikubo
  • Patent number: 4932927
    Abstract: A link assembly for a lightweight, non-metallic, conveyor or load transmission chain having significantly greater strength and other performance improvements compared to previous non-metallic chain links is disclosed. Each link assembly includes: a pair of identical sidebars each comprised of high-strength filamentary material wound in an elongated loop configuration and fixed in a matrix of hardened resin; a connecting pin having a stiff reinforced composite core and a skin-tight sleee of non-abrasive material; low friction bushing means between the sidebars and connecting pin; and retaining means for holding the assembly together.Methods of making the unique sidebar and connecting pin components are also disclosed.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: June 12, 1990
    Assignee: Envirex Inc.
    Inventor: John A. Fillar
  • Patent number: 4924925
    Abstract: A horizontal link member for connecting vertical links of a tire chain. The ink member includes a ring element and a closure part. The ring element includes a ring body that merges via transition portions into two outwardly extending arms that are adapted to contact one another in a closed position of the link member. The closure part is adapted to be placed over the arms to bring about the closed position of the link member and contact of the arms with one another. The closure part is provided with deformable holding portions, in the form of indentations of wall portions of the closure part, for effecting securement of the closure part to the ring element. The indentations extend transverse to a plane connecting longitudinal central axes of the arms, and are adapted to extend into recessed portions of the arms to effect the securement of the closure part to the ring element.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: May 15, 1990
    Assignee: Icis-Tirestar Vertrieb Montage Service W. von Dusterlho KG
    Inventor: Wolfgang von Dusterlho
  • Patent number: 4885907
    Abstract: The invention is called a "Chainbar" because it may be quickly and easily adjusted to have the characteristics of a flexible chain and/or that of a rigid bar; and may be easily folded into any size rectangular solid of equal volume. It consists of a series of interconnected links, which are flexible like a chain, but have means for restricting the movement between the links, to form a rigid bar. If the Chainbar is in the form of a flexible chain, and is passed through a tube which may be less than one link long, and has proper activating tabs, the movement between links will be sequentially restricted to form a rigid bar, adjustable in length in one link increments. The Chainbar has ubiquitous uses. It may anchored at one end and have a device attached to the other end, that may be extended out and away from the anchored end, such as a mirror, microphone, light source, etc. It may be used as folding handles or legs in folding, compact items such as tables, tripods, luggage carriers, etc.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: December 12, 1989
    Inventor: Sofia Pappanikolaou
  • Patent number: 4882901
    Abstract: A transmission or conveyor chain composed of a plurality of interconnected identical links which are attachable and detachable without need for pivot pins or other separate connecting hardware. Each link is preferably molded as a unitary structure of plastic material.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: November 28, 1989
    Assignee: The Laitram Corporation
    Inventor: James M. Lapeyre
  • Patent number: 4860532
    Abstract: Two chain segments of a snow-chain are connected through elongated elements, where both ends of an element each exhibit an open slot in which a link of a chain segment is introduced. Thereafter, the slots are pressed shut until the chain links are at least formlocked, or even forcelocked therein. The method enables one to make the connection elements out of the same material as the one used for the chain segments, and to temper them together with the latter. Futhermore, the method can easily be performed by robots.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: August 29, 1989
    Assignee: Milz Produkte AG
    Inventor: Arthur Milz
  • Patent number: 4850768
    Abstract: An improved geometry for links used in a tiedown chain adapted for attachment to a widely used style of a chain tensioning and securing device. The links are nonreversible, and are longitudinally nonuniform to prevent inadvertent reversed insertion of the chain in the anchoring device.
    Type: Grant
    Filed: April 19, 1988
    Date of Patent: July 25, 1989
    Assignee: Breeze Corporation
    Inventor: John R. Huber