US3718945A - Slings, tow-ropes and the like - Google Patents

Slings, tow-ropes and the like Download PDF

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Publication number
US3718945A
US3718945A US00079205A US3718945DA US3718945A US 3718945 A US3718945 A US 3718945A US 00079205 A US00079205 A US 00079205A US 3718945D A US3718945D A US 3718945DA US 3718945 A US3718945 A US 3718945A
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United States
Prior art keywords
cables
sheath
sling
section
major axis
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Expired - Lifetime
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US00079205A
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English (en)
Inventor
Treglode P De
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TREGLODE P DE
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TREGLODE P DE
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Publication date
Priority claimed from FR6935549A external-priority patent/FR2081971A5/fr
Priority claimed from FR7034193A external-priority patent/FR2106699A6/fr
Application filed by TREGLODE P DE filed Critical TREGLODE P DE
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Publication of US3718945A publication Critical patent/US3718945A/en
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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/18—Grommets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/156—Coating two or more articles simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/18—Band-type slings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/34—Combined diverse multipart fasteners
    • Y10T24/3484—Hook
    • Y10T24/3485—Hook and hook

Definitions

  • a cargo sling, tow-rope or the like comprises two cables embedded in a continuous elastomeric sheath of generally elliptical cross-section, these cables being disposed substantially in the longitudinal plane containing the major axis of the ellipse and in a substantially symmetrical relationship with the longitudinal centerline of the sheath; the cables extend beyond the sheath on at least one end, their projecting extremities being interconnected to form a loop or to-engage an attachment such as an extension cable or a coupling member.
  • the cables may be provided with deformations inside the sheath, such as undulations or shoulders, to prevent relative longitudinal slippage.
  • sheath can be produced by extrusion about the juxtaposed cables.
  • My present invention relates to cargo slings, towropes and the like, hereinafter referred to for simplicity as slings.
  • Such slings have hitherto been manufactured by passing a metal cable over pulleys or cylinders in order to form a series of parallel runs, which are then stretched and finally embedded together with the pulleys or cylinders in a rubber sheath which is subsequently vulcanized.
  • This method is expensive, and is restricted to the production of slings of predetermined lengths, because a special mold is required for each length.
  • the individual cables are spaced apart in the sheath so that the width of the sling becomes substantial for slings having a load rating above a given force, and the amount of rubber is much larger than that actually required to bind the cables together.
  • One object of the present invention is to provide an improved sling construction which overcomes these drawbacks.
  • the sling according to my invention comprises two cables embedded in an elastomeric'sheath of generally elliptical cross-section, the cables being located substantially in the longitudinal plane containing the major axis of the ellipse and in a substantially symmetrical manner on either side of the longitudinal centerline of the sheath; the cables project from the sheath on at least one end, where they are connected together to form a loop or to engage an attachment.
  • the sling can be disposed skew to the load being lifted without any ill effect, the resulting stresses being readily transmitted from one cable to the other. Furthermore, the contact between the sling and a load having a sharp corner is not limited to a linear zone but is spread over a relatively wide face owing to the compression of the enveloping material of the convex sheath, the contact area increasing with the load.
  • the area of contact between sling and load is not disposed opposite a cable, and this serves to prevent shear in the elastomeric material. If loading is such that one cable is located at the outside, it will be initially subjected to a higher force than the interior cable, but the two cables automatically adjust their positions on account of the loop formed by their ends, so that the part of the sling which is located beneath the load can reposition itself slightly until the forces to which the two cables are subjected balance one another. Finally, the rigidity of the sling is improved because of its convex cross-section, which makes it easier to push a cable beneath a load.
  • the sheath material may be rubber or polyvinylchloride. It may be transparent so that the cables can be seen and their condition inspected.
  • two cables are fed through an extruder in which an enveloping material is extruded around them to form a sheath 2 v tion, the assembly then being cut to provide any desired length of sling whereupon the cable ends are bared and interconnected to form a loop.
  • FIG. 1 is an elevational view of one exemplary embodiment
  • FIG. 2 is a sectional view on the line IIII of FIG. 1;
  • FIG. 3 is a schematic diagram illustrating a preferred method of manufacture
  • FIG. 4 is a detail view of a loop formed at one of the ends of the sling shown in FIG. 1;
  • FIG. 5 is a detail view of a loop in one alternative exemplary embodiment
  • FIG. 6 illustrates another exemplary embodiment
  • FIG. 7 illustrates yet another exemplary embodiment
  • FIG. 8 is a transverse section on the line VIII-VIII of FIG. 7;
  • FIG. 9 is a transverse section on the line IX-IX of FIG. 7;
  • FIG. 10 is a fragmentary view of a sling passing' of another exemplary embodiment
  • FIG. 12 is a view similar to that of FIG. 11, showing yet another exemplary embodiment
  • FIG. 13 is a transverse sectional view on the line XIIIXIII ofFIG. 12;
  • FIG. 14 is a fragmentary longitudinal sectional view showing the construction of yet another embodiment
  • FIG. 15 is an elevational view of an exemplary embodiment provided with hook-and-eye terminations
  • FIG. 16 is a section on the line XVI-XVI of FIG. 15;
  • FIG. 17 illustrates an alternative method of securing a ring to one end of a sling
  • FIG. 18 is a section on the line XVIII-XVIII of FIG. 17;
  • FIGS. 19 to 23 illustrate various alternative linking strips suitable for use in constructing slings in accordance with the invention.
  • FIGS. 24 to 29 are cross-sectional views of still further embodiments.
  • a sling l is constituted by two metal cables 2a and 2b embedded in a continuous sheath 3 of elastomeric material.
  • the sheath has an elongate cross-section, and in this embodiment the two faces 30 and 3b flanking the major axis of the generally elliptical cross-section are convex.
  • the cables 2a and 2b are preferably made of strands twisted in opposite directions in the two cables, in order to avoid any distortion of the sling when it forms a loop or knot.
  • the cables are located substantially in the longitudinal plane containing the major axis of the cross-section of the sheath 3, substantially symmetrically in relation to the longitudinalaxis of the envelope. Their ends are bared and connect-ed together to form loops l2.
  • FIG. 3 shows a preferred method of manufacture of the sling l, the cables 2a and 2b being fed from two from the extruder, which can subsequently be stored until required, and from which the requisite length for any particular sling can be cut.
  • the bared ends of the cables can be looped and joined together, at locations close to the end of the sheath, by two sleeves 9a and 9b, as shown in FIG. 4.
  • an auxiliary cable 18 can be used, which is curved back on itself, its ends being clamped by retaining sleeves 9a and 9b to respective extremities of the cables 2a and 2b, which in this case have been bared over a short length only, as shown in FIG. 5.
  • the cable 18 Since the load on the sling during use is divided equally between the cables 2a and 2b, but is carried in full by the cable 18, the latter preferably has a higher strength than that of either of the cables 2a and 2b. However, in certain cases it may be desirable that the weakest point of the sling be located in a loop, where it is easy to maintain serveillance, rather than at a point where the cables are embedded in the solid body of the sheath. In this case, the cable 18 may have the same strength as each of the cables 2a and 2b, or may even have a lower strength than they. The reverse case is equally possible, that is to say, the cable 18 may be stronger than the two cables 2a and 2b combined, if it is desired to ensure that any failure should take place beyond the loop.
  • the loop can be engaged in a slip through type of eyelet 10 which contains an elongate opening 11 whose length is grater than the external width of the eyelet, as shown in FIG. 6.
  • eyelet 10 which contains an elongate opening 11 whose length is grater than the external width of the eyelet, as shown in FIG. 6.
  • the two sleeves 9a and 9b are disposed inside the arms of the eyelet 10 in order to avoid an excessive rigid length.
  • a half eyelet 10a can be used, as shown in FIG. 5, to engage the auxiliary cable 18 but to limit the length of the rigid part.
  • auxiliary cable 18 from a section of sheathed cables similar to or identical with that used to make up the body of the sling.
  • the loop is formed by two extension cables 18a and 18b located in a sheath 19 which has two mutually opposed convex faces like the body 1 of the sling, albeit preferably of a smaller section.
  • the cables 18a and 18b are fixed to the respective cable 2a or 2b by a respective sleeve 9a or 9b.
  • the cables 18a and 18b can have the same strength as the cables 2a and 2b, or a lower strength in order to localize possible failures in the loop, or alternatively a higher strength if it is desired to guard against failures in the loop.
  • the sheath 19 is preferably made of a transparent material.
  • the sling just described does not twist, and retains its orientation, even after intensive use. This is due to the fact that when the sling is passed beneath a load, the cables 2a and 2b are not disposed vertically in relation to the point of contact but are spaced laterally to a small extent, on either side of the zone of contact. If the sling contained only one cable, this would not be the case and the cable could shear the elastomeric material of the sheath.
  • the upper convex face 3a of the sling flattens under the effect of the load, and this tends to spread the two cables 20 and 2b slightly further apart whereas the tension developed in the cables tends to maintain the cables at their initial spacing, an equilibrium being thus established between these two forces.
  • the cables do not slide in relation to the sheath and the locations of the sharp edges of the load, thereby avoiding any risk of the envelope being sheared. Instead, the whole assembly slides over the sharp corners and the section of the sling which is defined between these sharp corners is urged against the bottom of the load.
  • the tension in the cables at a point in contact with a sharp angle during a lifting operation lead to the danger of producing shear in the sheath material. If it is desired to reduce this shear effect, the cables are advantageously bonded to the sheath.
  • the ratio between the height and the length of the elliptical cross-section can be selected in accordance with the desired application. This ratio can be small in the case where the load to be lifted is not fragile, or may be close to unity if it is necessary to place around the cables 2a and 2b a substantial quantity of envoloping material, as is the case, for example, if the load to be lifted has sharp angles or is fragile.
  • cables of different sizes can be used depending upon the strength which the sling is to have.
  • the cables can be provided with deformations in the form of closely spaced beads or fittings.
  • FIG. 11 shows an embodiment of the invention in which individual fittings 14 are provided on each cable to form transverse shoulders preventing slippage relative to the sheath.
  • FIGS. 12 and 13 illustrate an embodiment in which fittings 15 are provided which are common to the cable pair. In these latter Figures, the fitting 15 has two elongate holes 16 through each of which passes a cable, 20 or 2b respectively. The ends of the fitting are formed with external teeth 17, in order to provide an improved bond between the fittings and the sheath material.
  • the sling is otherwise designed in a manner hereinbefore described, the beads or fittings being slipped over the cables prior to extrusion.
  • FIG. 14 illustrates an embodiment in which the cables 2a and 2b are not straight but deformed to follow a serpentine path within the sheath, the undulations of one cable being symmetrical with respect to those of the other in relation to the longitudinal center-line of the sling.
  • the sling can thus extend elastically at the same time that the enveloping sheath material located between the cables is compressed or stretched, thereby guarding against failure of the sling when it is subjected to a heavy shock load.
  • the undulations or corrugations can extend over the whole of the length of the sling or over a part only.
  • the pitch of the undulations in the two cables could also differ from one another, the amplitude of the undulations of larger pitch being smaller than that of the undulations of the other, so that the lengths of the serpentine portions of the two cables are substantially the same.
  • the cables are preferably given the serpentine form prior to extrusion.
  • FIGS. and 16 illustrate an exemplary embodiment of the invention in which one end of the sling 1 has been attached to a ring through the medium of a stirrup link having two legs 21a and 21b which are attached to the cables 2a and 2b by a common sleeve 22.
  • the other end of the sling 1 has been connected in a similar manner to a hook 23.
  • the legs 21a and 21b of the stirrup link are preferably roughened in order to improve the connection between the link and the sleeve 22.
  • FIGS. 17 and 18 illustrate an exemplary embodiment in which one of the ends of the sling 1 has been secured to a ring 20 by means of a flat anchor plate 24 and a composite link formed by two elements a and 25b interconnected by a pin 26.
  • the plate 24 has a hole 26a (FIG. 19) receiving the element 250 of the composite link, the plate being secured to the cables 2a and 2b by a sleeve 9 which keeps it clamped between these two cables.
  • the major faces of the plate 24 can be keyed and/or given an undulation in the plane of the plate, as also shown in FIG. 19, and/or currugated perpendicularly thereto, as shown in FIG. 20.
  • the anchor plate 24 may be formed integrally with a threaded portion 24a as shown in FIG. 21, or a yoke 24! (FIG. 22), or a chain link 24c (FIG. 23).
  • a threaded portion 24a as shown in FIG. 21, or a yoke 24! (FIG. 22), or a chain link 24c (FIG. 23).
  • the attachment of the sling to a ring 20 is effected in a manner similar to that shown in FIG. 17, by slipping a mating element 25b into the ring and attaching that element to the anchor plate by the pin 26.
  • FIGS. 24 to 29 Alternative sheath cross-sections are shown in FIGS. 24 to 29.
  • the sling can have one flat face la (FIG. 24),'or even or be of concave one (not shown), a flattened convex section (FIG. 25).
  • External striations or fluting 27 may be provided to improved its adhesion, as shown in FIG. 26, or a central bead 28 as shown in FIG. 27.
  • one or more internal cavities 29 or 30 may be provided, as shown in FIGS. 28 and 29 respectively.
  • the cables 20 and 2b can be made of a natural or synthetic textile material instead of metal.
  • the axes of cables 2a, 2b substantially coincide with the centers of curvature of the generally elliptical cross-section of the sheath 3 at opposite ends of its major axis.
  • a sling comprising two spaeedly juxtaposed cables embedded in a continuous elastomeric sheath and provided with interconnected extremities projecting from said sheath and forming a pair of loops at opposite ends thereof, said sheath having a generally elliptical crosssection with the major axis of the ellipse substantially passin through the axes of said cables on opposite sides 0 the longitudinal centerline of the sheath and at substantially equal distances from said centerline, the axes of said cables substantially coinciding with the centers of curvature of said cross-section at opposite ends of said major axis.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Ropes Or Cables (AREA)
US00079205A 1969-10-13 1970-10-08 Slings, tow-ropes and the like Expired - Lifetime US3718945A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR6935549A FR2081971A5 (enrdf_load_stackoverflow) 1969-10-13 1969-10-13
FR7034193A FR2106699A6 (enrdf_load_stackoverflow) 1970-09-16 1970-09-16

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US3718945A true US3718945A (en) 1973-03-06

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US00079205A Expired - Lifetime US3718945A (en) 1969-10-13 1970-10-08 Slings, tow-ropes and the like

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US (1) US3718945A (enrdf_load_stackoverflow)
JP (1) JPS4942144B1 (enrdf_load_stackoverflow)
BE (1) BE757296A (enrdf_load_stackoverflow)
CA (1) CA934941A (enrdf_load_stackoverflow)
CH (1) CH527328A (enrdf_load_stackoverflow)
DE (1) DE2049767B2 (enrdf_load_stackoverflow)
ES (1) ES197807Y (enrdf_load_stackoverflow)
GB (1) GB1292083A (enrdf_load_stackoverflow)
NL (1) NL7014940A (enrdf_load_stackoverflow)
ZA (1) ZA706917B (enrdf_load_stackoverflow)

Cited By (33)

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US4007702A (en) * 1973-09-19 1977-02-15 Hallam Polymers & Engineering Limited Towing etc. cable protection means
US4093292A (en) * 1974-04-01 1978-06-06 Jose Maria Maso Marcet Sling and its method of manufacture
US4171840A (en) * 1978-01-23 1979-10-23 Berzenye Michael L Protective coated wire rope sling and method for making same
US4530534A (en) * 1978-11-30 1985-07-23 K A Bergs Smide Ab Connection means, particularly for a suspended load
US4850629A (en) * 1988-02-04 1989-07-25 St Germain Dennis Multiple path sling construction
US5727833A (en) * 1996-06-10 1998-03-17 American Steel Investment Corporation Eye-and-eye sling
US6050587A (en) * 1995-12-05 2000-04-18 Spanset Inter Ag Pulling arrangement having a guide element
AU725855B3 (en) * 1999-12-03 2000-10-19 Micheal Clarkin Cable pulling device
US6241296B1 (en) * 1999-06-11 2001-06-05 Snobunje Incorporated Snowmobile extricating apparatus and method
US20040179917A1 (en) * 2003-03-12 2004-09-16 Ardo Louis D. Load securing device and method for using the same
US20050062303A1 (en) * 2001-12-03 2005-03-24 Mammut Tec Ag Lifting belt sling
US20060208513A1 (en) * 2004-06-19 2006-09-21 Summars Linda R Synthetic roundsling with inspectable core
US20060242814A1 (en) * 2000-04-19 2006-11-02 Prete James G Balance system for sash window assembly
US20090184223A1 (en) * 2008-01-21 2009-07-23 Solon Se Fixing device for photovoltaic modules on sloping roofs
US8393658B2 (en) * 2010-08-04 2013-03-12 Ronnie Malina Device for protecting doors
US20130209803A1 (en) * 2012-02-15 2013-08-15 Hitachi Cable, Ltd. Crosslinked rubber, rubber-sheathed cable using same, and crosslinked rubber producing method
US8511053B2 (en) 2008-06-04 2013-08-20 Samson Rope Technologies Synthetic rope formed of blend fibers
WO2014043136A1 (en) * 2012-09-12 2014-03-20 Samson Rope Technologies Rope systems and methods for use as a round sling
US8689534B1 (en) 2013-03-06 2014-04-08 Samson Rope Technologies Segmented synthetic rope structures, systems, and methods
US8707668B2 (en) 2003-12-16 2014-04-29 Samson Rope Technologies Wrapped yarns for use in ropes having predetermined surface characteristics
US9074318B2 (en) 2005-09-15 2015-07-07 Samson Rope Technologies Rope structure with improved bending fatigue and abrasion resistance characteristics
US20160095420A1 (en) * 2014-10-06 2016-04-07 Ty-Flot, Inc. Drop-prevention apparatus for a rolled product
US20160095421A1 (en) * 2014-10-06 2016-04-07 Ty-Flot, Inc. Drop-prevention apparatus for a rolled product
US9452910B2 (en) * 2014-12-23 2016-09-27 Iveco Magirus Ag Lanyard assembly for lifting a rescue apparatus
US20170002513A1 (en) * 2014-01-30 2017-01-05 Tuefelberger Fiber Rope Gmbh Rope assembly
US9573661B1 (en) 2015-07-16 2017-02-21 Samson Rope Technologies Systems and methods for controlling recoil of rope under failure conditions
US10052521B1 (en) * 2015-05-26 2018-08-21 Richard Dean Mumford Self-advancing knee ascender
US10377607B2 (en) 2016-04-30 2019-08-13 Samson Rope Technologies Rope systems and methods for use as a round sling
CN113775621A (zh) * 2021-10-20 2021-12-10 长沙矿山研究院有限责任公司 一种搭载于深海采矿车顶部的吊放离合装置
CN116119517A (zh) * 2023-04-04 2023-05-16 聊城市宝丰机电科技有限公司 一种港口起重机吊具自动防扭装置
US20240117860A1 (en) * 2021-02-09 2024-04-11 Advanced Innergy Ltd Rope assemblies
US20240263682A1 (en) * 2024-04-18 2024-08-08 Shanghai Jinli Special Rope Co., Ltd. Flexible pulling rope and manufacturing method thereof
RU235701U1 (ru) * 2024-10-21 2025-07-11 Юрий Станиславович Казачкин Усовершенствованное устройство гимнастической петли

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FR2570066B1 (fr) * 1984-09-10 1987-11-20 Cogema Dispositif pour la manutention d'une charge a distance
US4623504A (en) * 1984-10-22 1986-11-18 Smith Larry F Method and apparatus for making post-tensioning tendons for concrete
DE8609231U1 (de) * 1986-04-05 1986-06-05 Carl Stahl GmbH Seil + Hebetechnik, 7334 Süssen Seilgeschirr
CN110562843B (zh) * 2019-08-29 2024-02-02 泰州力虎工具有限公司 长距离两头扣环形吊带生产线及其生产方法

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US2304306A (en) * 1942-01-10 1942-12-08 Roeblings John A Sons Co Sling
US2569912A (en) * 1947-10-27 1951-10-02 Andersen Hans Rope sling
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US3018128A (en) * 1959-09-25 1962-01-23 Colorado Fuel & Iron Corp Flat type sling
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US3018128A (en) * 1959-09-25 1962-01-23 Colorado Fuel & Iron Corp Flat type sling
US3079192A (en) * 1960-05-27 1963-02-26 John A Otley Cargo sling
US3317233A (en) * 1965-04-20 1967-05-02 Boyd C Black Sling construction and method of making same
US3512223A (en) * 1965-10-22 1970-05-19 Aquariums Inc Loop formed of synthetic fibre cord
US3310333A (en) * 1966-01-04 1967-03-21 Hutson Robert Carey Reach pendant for attaching external cargo to a hovering aircraft

Cited By (49)

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US4007702A (en) * 1973-09-19 1977-02-15 Hallam Polymers & Engineering Limited Towing etc. cable protection means
US4093292A (en) * 1974-04-01 1978-06-06 Jose Maria Maso Marcet Sling and its method of manufacture
US4171840A (en) * 1978-01-23 1979-10-23 Berzenye Michael L Protective coated wire rope sling and method for making same
US4530534A (en) * 1978-11-30 1985-07-23 K A Bergs Smide Ab Connection means, particularly for a suspended load
US4850629A (en) * 1988-02-04 1989-07-25 St Germain Dennis Multiple path sling construction
US6050587A (en) * 1995-12-05 2000-04-18 Spanset Inter Ag Pulling arrangement having a guide element
US5727833A (en) * 1996-06-10 1998-03-17 American Steel Investment Corporation Eye-and-eye sling
US6241296B1 (en) * 1999-06-11 2001-06-05 Snobunje Incorporated Snowmobile extricating apparatus and method
AU725855B3 (en) * 1999-12-03 2000-10-19 Micheal Clarkin Cable pulling device
US20060242814A1 (en) * 2000-04-19 2006-11-02 Prete James G Balance system for sash window assembly
US7637549B2 (en) * 2001-12-03 2009-12-29 Mamutec Ag Lifting sling
US20050062303A1 (en) * 2001-12-03 2005-03-24 Mammut Tec Ag Lifting belt sling
US20040179917A1 (en) * 2003-03-12 2004-09-16 Ardo Louis D. Load securing device and method for using the same
US7056073B2 (en) * 2003-03-12 2006-06-06 Ardo Louis D Load securing device and method for using the same
US8707668B2 (en) 2003-12-16 2014-04-29 Samson Rope Technologies Wrapped yarns for use in ropes having predetermined surface characteristics
US9404203B2 (en) 2003-12-16 2016-08-02 Samson Rope Technologies Wrapped yarns for use in ropes having predetermined surface characteristics
US7475926B2 (en) * 2004-06-19 2009-01-13 First Sling Technology Llc Synthetic roundsling with inspectable core
US20090152885A1 (en) * 2004-06-19 2009-06-18 First Sling Technology Llc Synthetic roundsling with inspectable core
US20060208513A1 (en) * 2004-06-19 2006-09-21 Summars Linda R Synthetic roundsling with inspectable core
AU2006259277B2 (en) * 2005-06-17 2010-12-02 First Sling Technology Llc Synthetic roundsling with inspectable core
US9074318B2 (en) 2005-09-15 2015-07-07 Samson Rope Technologies Rope structure with improved bending fatigue and abrasion resistance characteristics
US9982386B2 (en) 2005-09-15 2018-05-29 Samson Rope Technologies Rope structure with improved bending fatigue and abrasion resistance characteristics
US20090184223A1 (en) * 2008-01-21 2009-07-23 Solon Se Fixing device for photovoltaic modules on sloping roofs
US7963074B2 (en) * 2008-01-21 2011-06-21 Solon Se Fixing device for photovoltaic modules on sloping roofs
US8511053B2 (en) 2008-06-04 2013-08-20 Samson Rope Technologies Synthetic rope formed of blend fibers
US8393658B2 (en) * 2010-08-04 2013-03-12 Ronnie Malina Device for protecting doors
US20130209803A1 (en) * 2012-02-15 2013-08-15 Hitachi Cable, Ltd. Crosslinked rubber, rubber-sheathed cable using same, and crosslinked rubber producing method
WO2014043136A1 (en) * 2012-09-12 2014-03-20 Samson Rope Technologies Rope systems and methods for use as a round sling
US9003757B2 (en) 2012-09-12 2015-04-14 Samson Rope Technologies Rope systems and methods for use as a round sling
US8689534B1 (en) 2013-03-06 2014-04-08 Samson Rope Technologies Segmented synthetic rope structures, systems, and methods
US9261167B2 (en) 2013-03-06 2016-02-16 Samson Rope Technologies Segmented synthetic rope structures, systems, and methods
US10563350B2 (en) * 2014-01-30 2020-02-18 Teufelberger Fiber Rope Gmbh Rope assembly
US20170002513A1 (en) * 2014-01-30 2017-01-05 Tuefelberger Fiber Rope Gmbh Rope assembly
US20160095420A1 (en) * 2014-10-06 2016-04-07 Ty-Flot, Inc. Drop-prevention apparatus for a rolled product
US9480327B2 (en) * 2014-10-06 2016-11-01 Ty-Flot, Inc. Drop-prevention apparatus for a rolled product
US20160095421A1 (en) * 2014-10-06 2016-04-07 Ty-Flot, Inc. Drop-prevention apparatus for a rolled product
US9635925B2 (en) * 2014-10-06 2017-05-02 Ty-Flot, Inc. Drop-prevention apparatus for a rolled product
EP3037133B1 (en) * 2014-12-23 2018-06-27 Iveco Magirus Ag Lanyard assembly for lifting a rescue apparatus
US9452910B2 (en) * 2014-12-23 2016-09-27 Iveco Magirus Ag Lanyard assembly for lifting a rescue apparatus
US10052521B1 (en) * 2015-05-26 2018-08-21 Richard Dean Mumford Self-advancing knee ascender
US9573661B1 (en) 2015-07-16 2017-02-21 Samson Rope Technologies Systems and methods for controlling recoil of rope under failure conditions
US10377607B2 (en) 2016-04-30 2019-08-13 Samson Rope Technologies Rope systems and methods for use as a round sling
US20240117860A1 (en) * 2021-02-09 2024-04-11 Advanced Innergy Ltd Rope assemblies
CN113775621A (zh) * 2021-10-20 2021-12-10 长沙矿山研究院有限责任公司 一种搭载于深海采矿车顶部的吊放离合装置
CN116119517A (zh) * 2023-04-04 2023-05-16 聊城市宝丰机电科技有限公司 一种港口起重机吊具自动防扭装置
CN116119517B (zh) * 2023-04-04 2023-06-30 聊城市宝丰机电科技有限公司 一种港口起重机吊具自动防扭装置
US20240263682A1 (en) * 2024-04-18 2024-08-08 Shanghai Jinli Special Rope Co., Ltd. Flexible pulling rope and manufacturing method thereof
US12158192B2 (en) * 2024-04-18 2024-12-03 Shanghai Jinli Special Rope Co., Ltd. Flexible pulling rope and manufacturing method thereof
RU235701U1 (ru) * 2024-10-21 2025-07-11 Юрий Станиславович Казачкин Усовершенствованное устройство гимнастической петли

Also Published As

Publication number Publication date
DE2049767B2 (de) 1974-11-21
NL7014940A (enrdf_load_stackoverflow) 1971-04-15
ES197807Y (es) 1975-11-01
JPS4942144B1 (enrdf_load_stackoverflow) 1974-11-13
GB1292083A (en) 1972-10-11
BE757296A (fr) 1971-03-16
CH527328A (fr) 1972-08-31
DE2049767A1 (de) 1971-04-22
ES197807U (es) 1975-05-16
CA934941A (en) 1973-10-09
ZA706917B (en) 1971-07-28

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