US3919792A - Excavating tooth assembly - Google Patents

Excavating tooth assembly Download PDF

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Publication number
US3919792A
US3919792A US526589A US52658974A US3919792A US 3919792 A US3919792 A US 3919792A US 526589 A US526589 A US 526589A US 52658974 A US52658974 A US 52658974A US 3919792 A US3919792 A US 3919792A
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US
United States
Prior art keywords
bottom wall
bearing surface
socket
shank
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US526589A
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English (en)
Inventor
Frederick C Hahn
Larren F Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Esco Corp
Original Assignee
Esco Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Esco Corp filed Critical Esco Corp
Priority to US526589A priority Critical patent/US3919792A/en
Priority to CA233,746A priority patent/CA1022212A/en
Priority to ZA00755395A priority patent/ZA755395B/xx
Priority to GB3514475A priority patent/GB1469620A/en
Priority to BE159564A priority patent/BE832863A/xx
Priority to PH17516A priority patent/PH11745A/en
Priority to DE2539118A priority patent/DE2539118C3/de
Priority to JP10791775A priority patent/JPS5431281B2/ja
Priority to AU84701/75A priority patent/AU474280B2/en
Priority to TR18994A priority patent/TR18994A/tr
Priority to BR7505871*A priority patent/BR7505871A/pt
Priority to FR7528186A priority patent/FR2292077A1/fr
Application granted granted Critical
Publication of US3919792A publication Critical patent/US3919792A/en
Priority to CA286,912A priority patent/CA1037995A/en
Assigned to ESCO CORPORATION reassignment ESCO CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: NEWESCO CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2825—Mountings therefor using adapters
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/10—Details of socket shapes

Definitions

  • ABSTRACT An assembly including a socket member and a tooth member having longitudinally spaced bearing surfaces for ready interchange of tooth members so as to ac commodate the excavating equipment for various types of work.
  • This invention relates to an excavating tooth assembly and, more particularly, to an assembly including a socket member and a tooth member.
  • the tooth member may be either a single piece tooth or a two-part tooth but in any event provides a forward digging edge for ground engagement.
  • Such excavating teeth are mounted on a variety of excavators, viz., drag line buckets, shovel clippers, front end loaders, trenchers, etc.
  • the rear portion of the tooth (generally designated the shank) can either l extend into the mounting lip or other surface or (2) can extend around it as in the case of a bifurcated shank.
  • the actual connection between the shank and the lip can be achieved through pins, bolts or welding.
  • the primary requirement of a tooth mounting is strength, i.e., resistance to failure when encountering harsh shock loads.
  • an almost as important requirement is simplicity of dissassembly excavating people being realistic to realize that even the strongest tooth may fail and require replacement.
  • the lip may be equipped with a recess into which a holder is welded.
  • the holder may receive an adapter, i.e., a connective member which has a shank at one end received on or in the holder and a nose at the forward end for the receipt of a replaceable tip or point.
  • the point may be pinned to the adapter nose and the adapter shank pinned or welded to the holder.
  • difficulties have arisen when the excavating people recognized that larger, stronger teeth should be used on a given machine. When this occurred, there had to be a virtual rebuilding of the lip to accommodate a larger size tooth.
  • the object of this invention is to provide a replaceable adapter which fits into a socket the socket either being cast, forged or welded in or on a lip to provide an adapter holding device that will last the life of the lip while providing rapid change capability on the machine in the field to suit a different type of digging application or to replace the adapter nose due to a failure developed by excessive service loads.
  • the tooth member is equipped with a massive section. intermediate its length, i.e., between the tapered forward end or nose and the rearwardly extending, relatively elongated shank.
  • the bottom wall of this massive section provides a bearing surface which is substantially inclined relative to the path of movement of the tooth member when it is being installed in the socket member.
  • Cooperating with this external bearing surface is an internal bearing 2 surface on the socket bottom wall which is complementarily arranged. These surfaces take the brunt of downward shock loads. on the tooth assembly.v
  • the bottom wall of the socket member is relatively thicker in this area to provide a pad-like part which also is advantageously utilized for the securement of the socket to the beveled portion of an excavator lip.
  • top and bottom bearing surfaces on the external walls of the shank and the internal walls of the socket member. These surfaces coact with the first mentioned pair of surfaces, i.e., those, positioned more forwardly, to resist beam load ing.
  • FIG. 1 is a fragmentary perspective view of the ground engaging portion of a front end loader and equipped with tooth assemblies according to the instant invention
  • FIG. 2 is a fragmentary perspective view of a ditcher wheel equipped with tooth assemblies according to the instant invention
  • FIG. 3 is a perspective view of the inventive tooth member and socket member in the process of being assembled, i.e., only partially assembled;
  • FIG. 4 is another perspective view of the elements of FIG. 3 in about the same stage of assembly but showing the parts generally from below;
  • FIG. 5 is a side elevational view of the inventive tooth assembly, partially in section, and corresponding generally (but with parts assembled) of the showing in FIG.
  • FIG. 6 is a top plan view, partially in section, of the assembly of FIG. 5;
  • FIG. 7 is a sectional view as would be seen along the sight line 7-7 of FIG. 5;
  • FIG. 8 is another sectional view such as would be seen along the sight line 8-8 of FIG. 5;
  • FIG. 9 is a fragmentary top plan view of a ditcher equipped with tooth holders according to the instant invention.
  • FIG. 10 is a fragmentary front elevational view of the ditcher seen in FIG. 9;
  • FIG. 11 is a view taken along the line 11-11 of FIG. 10;
  • FIG. 12 is a view taken along the line 1212 of FIG. 9.
  • the'numeral 10 designates generally an excavating machine which, in the specific illustration given, is a front end loader bucket.
  • the bucket has the usual side walls 11 which flank a bottom wall 12.
  • the bottom wall 12 terminates in a lip 13 which is beveled, i.e., having a tapered top surface to develop better digging efficiency.
  • a plurality of tooth assemblies generally designated 14 project forwardly from the bottom wall 12,
  • each tooth assembly 14 includes a socket member generally designated 15 which is weldably secured .to thebucket l and which slidingly receives a tooth member generally designated 16.
  • the tooth member 16 is secured within the socket member by a rear nut and bolt assembly generally designated 17 (see the extreme right hand end). This is not a tension fit, it only being necessary to prevent loss of assembly through gravity or other negative thrust.
  • the tooth member 16 does not itself provide the digging edge but receives a tip or point 18 which is fastened .to the tooth member 16 by a pin lock (designated only in FIG. 6).
  • a pin lock designated only in FIG. 6
  • the principal wear occurs on the apex 20 of the point 18 and by suitably proportioning the point (as illustrated most graphically in FIG. 5) it is possible to wear the point 18 almost down to its socket 21, thereby reducing the amount of throw-away metal to 50 percent or less of the original point.
  • the tooth member 16 is seen to be partially received within the socket member 15.
  • the path of movement (for inserting a portion of the tooth member 16 into the socket member 15) is designated P in FIG. 3.
  • the tooth member 16 has a tapered nose 22 at its forward end, a massive section 23 intermediate its length, and a relatively elongated shank 24 at its rear end.
  • the socket member 15, like the tooth member 16, is a unitary cast body of alloy steel and is generally rectangular having a hollow interior to provide a socket for the receipt of the shank 24.
  • the socket member 15 has side walls as at 25 and 26 the latter being best seen in FIG. 3.
  • the side walls 25 and 26 are connected by a bottom wall 27 and a top wall 28 (see FIG. 3).
  • a rear wall 29 which is not designated in FIGS. 3 and 4 but which can be seen clearly in FIG. 6.
  • the rear wall 29 is apertured as at 29a to receive the bolt shank of the assembly 17 while the shank 24 of the tooth member 16 is recessed as at 24a to receive the head of the bolt.
  • the bottom wall 27 of the socket member 15 is seen to have a relatively thicker portion 30 at the forward end thereof particularly in contrast to the rearward portion 31 of the bottom wall 27.
  • the bottom wall portions 30 and 31 are separated by an opening 32 which extends from the interior of one side wall to the other and thereby develops raillike bottom surfaces on the side walls 25 and 26 see the element designated 33 in FIG. 8 relative to the side wall 25. This assists in achieving excellent weld securement of the socket member 15 to the bucket 10, more particularly to the rock steel cutting edge thereof.
  • the relatively thicker forward portion 30 can be considered an essentially pad-like part and serves as a pri mary bearing surface for a downward shock load such as is designated by the vector F at the extreme left in FIG. 5. It will be appreciated that the pad-like part 30 is associated with massive section 23 of the tooth member, thereby achieving advantageous transmission of shock loads and this, irrespective of the size of the tooth, viz., the size of the nose 22 and hence the size of the point 18. For the purpose of receiving stress, the pad-like part 30 has an upper bearing surface 34.
  • These two surfaces, 36 and 37, are also surfaces of revolution generated about the vertical axis V.
  • the surface 36 (and hence the surface 37) is seen to extend a substantial distance along the length of the assembly, i.e., approximately one-half the length of the shank 24 insofar as the surface 36 is concerned and in the same proportion relative to the length of the socket member 15 insofar as the surface 37 is concerned.
  • bottom wall surfaces 38 on the socket member 15 and 39 on the tooth member 16 are also cooperating in absorbing beam loading. Again, these are surfaces of revolution generated about the vertical axis of revolution V.
  • the inclination of the forward bearing surface 34 (and hence the surface 35 also) is much steeper relative to the path of movement P (for installing the shank 24 in the socket member 15) than the inclination of the surface 39 (and also 38) therewith.
  • the surfaces 38 and 39 form an angle of about 10 relative to the path of movement P.
  • the surfaces 34 and 35 are at an inclination of about 35.
  • All of the surfaces 3439 are generated from the same point of generation G (see the right hand end of FIG. 5).
  • the upper surfaces 36 and 37 of about 15 with the path of movement P.
  • the paired surfaces 36 and 37 relative to the top walls and 38 and 39 on the bottom walls are effective to resist both upward and downward shock loads, i.e., F,- as well as F (see the left hand end of FIG. 5).
  • a pair of confronting bearing surfaces 40 and 41 positioned centrally of the massive section 23, i.e., generally centrally of FIG. 5.
  • the surfaces 40 we extend'the side walls 25 and 26 forwardly to provide ears 42.
  • the bottom walls of the ears 42 provide the surfaces 40 and the ears are received in complementarily contoured recesses 43 in the massive portion 23 of the tooth member 16.
  • the surfaces 40 and 41 are particularly effective in resisting back slap, i.e., the use of the teeth 14 as tampers or compressive tools.
  • the upper and lower bearing surfaces 36-37 and 38-39, respectively, serve to transmit both upward and downward applied loads, being part of convergently related top and bottom walls on the shank 24 and the socket member 15.
  • This also is a tapered type clearance and affords side loading stabilization.
  • side loading develops (as at 44 in FIG. 6) the shank 24 will come into full contact with the interior side wall of the holder, particularly at the front as the shank rotates about the axis of revolution V.
  • the force 44 is resisted as at 45 in FIG. 6.
  • the socket member 15 can be cast integrally with the excavating tooth in contrast to the embodiment of FIGS. l-8 where the lower wall 27 is welded to the top of the cutting edge 12 (see particularly FIG. 5).
  • the teeth 114 on the ditcher 6 of FIG. 2 are supported by integrally cast holders and this is seen in greater detail in FIGS. 9-12.
  • FIGS. 9 and 10 A portion of the ditcher 110 is seen in FIGS. 9 and 10. There the socket members are cast as integral components of the cutting edge 112. More precisely, the holder members 115 extend forward of the tapered edge 113 (see particularly FIG. 9).
  • the base or edge portion 1 12 of the ditcher is integrally connected to the socket member 115 midway of the height thereof this in contrast to the showing in FIG. 5 wherein the holder member 15 is positioned above the cutting edge 12. More particularly, the cutting edge 112 is essentially bracketed by the ears 142 (see FIG. 11) and extends at a slight angle to the path of movement P, i.e., about 5 upward.
  • the socket member 15 or 115 is substantially protected by the tooth member 16 from wear.
  • the holder can be made of ferritic low alloy steel for superior welding characteristics while the tooth member can be made in a minimum hardness range of 388-440 Brinell to yield high strength and wear resistance.
  • An excavating tooth assembly comprising a socket member and a tooth member, said socket member having top, bottom, rear and side walls providing a socket for receipt of a shank of said tooth member, said bottom wall being rearwardly convergent relative to said top wall and said side walls being rearwardly convergent relative to each other, said tooth member having a tapered forward end and a relatively elongated shank at its rear end, said shank being tapered complementarily to said socket member convergent walls and being movable along a generally linear path into assembled relation with said socket member,
  • said shank rear end being equipped with a bolt-head receiving recess and said socket member rear wall being equipped with an aperture, a bolt assembly in said recess and aperture for maintaining said tooth member in assembled relation with said socket member,
  • top and bottom walls each having internal bearing surfaces for transmitting beam loads on said tooth member to said socket member, a portion of said bottom wall internal bearing surface being positioned adjacent the forward end of said socket member and being more steeply inclined to said path than the portion of said bottom wall internal bearing surface adjacent said rear wall,
  • said tooth member having a massive section in the portion thereof immediately rearward of said ta 7 pered forward end to transmit a substantial portion of a downward beam load to said forward portion of said bottom wall bearing surface, said bottom wall being relatively thicker in said forward portion than the remainder thereof to provide a pad-like part for receiving said downward beam load,
  • said side walls being equipped with forwardly projecting ears spaced above said bottom wall forward portion and said tooth member being complementarily recessed to receive said ears to provide means for transmitting a portion of an upward beam load.
  • each of said bearing surfaces is a surface of revolution generated about a generally vertical axis adjacent to but spaced rearwardly of said rear wall.
  • each of said bearing surfaces in said socket member is inwardly concave.
  • a socket member adapted to be mounted on an excavator lip for receiving an excavating tooth member comprising a unitary generally rectangular, hollow element having top, bottom, rear and side walls to provide a socket for the receipt of a shank of a tooth member when said shank is moved along a generally linear path into said socket,
  • top and bottom walls being rearwardly convergent and said side walls also being rearwardly convergent, said rear wall being apextured to receive a securing bolt for maintaining said tooth member in assembled relation with said socket member,
  • top and bottom Walls each having internal hearing surfaces for transmitting beam loads on said tooth member from said shank to said socket member, a portion of said bottom wall internal bearing surface being positioned adjacent the forward end of said socket member and being more steeply inclined to said path than the portion of said bottom wall internal bearing surface adjacent said rear wall,
  • said tooth member having a massive section in the portion thereof immediately rearward of said tapered forward end to transmit a substantial portion of a downward beam load to said forward portion of said bottom wall bearing surface, said bottom wall being relatively thicker in said forward portion than the remainder thereof to receive said downward beam load,
  • said side walls being equipped with forwardly projecting ears spaced above said bottom wall forward portion to receive a portion of an upward beam load applied to said tooth member.
  • bottom wall is equipped with an opening extending there through between the internal surfaces of said side walls and extending longitudinally from said relatively thicker portion to said bearing surface portion adjacent said rear wall to provide rail-like bottom portions on said side walls for weldable securement to an excavator lip.
  • each of said bearing surfaces is a surface of revolution generated about a generally vertical axis adjacent to but spaced rearwardly of said rear wall.
  • each of said bearing surfaces in said socket member is inwardly convex.
  • a tooth member for mounting in the socket of an excavator lip comprising a unitary body having a tapered forward end and a relatively elongated shank at its rear end, said shank being generally rectangular in cross section and having rearwardly convergent top and bottom walls and rearwardly convergent side walls adapted to complement walls in said socket whereby said tooth member is movable along a linear path into assembled relation with said socket,
  • said tooth member having a massive section in the portion thereof immediately rearward of said tapered forward end and forward of said shank to transmit a substantial portion of a downward beam load, said shank top and bottom walls each having external bearing surfaces for transmitting beam loads on said tooth member to said socket, said massive section also having a bottom wall external bearing surface and being more steeply inclined to said path than the portion of said bottom wall internal bearing surface adjacent said rear shank end, said massive section having side walls being equipped with rearwardly facing recesses to provide means for transmitting a portion of an upward beam load.
  • said shank bottom wall has another external bearing surface portion positioned immediately rearward of said massive section and disposed at less of an inclination to said path than the portion of said bottom wall bearing surface adjacent said rear shank end.
  • each of said bearing surfaces is a surface of revolution generated about a generally vertical axis adjacent to but spaced rearwardly of said rear shank end.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)
US526589A 1974-11-25 1974-11-25 Excavating tooth assembly Expired - Lifetime US3919792A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US526589A US3919792A (en) 1974-11-25 1974-11-25 Excavating tooth assembly
CA233,746A CA1022212A (en) 1974-11-25 1975-08-19 Excavating tooth assembly
ZA00755395A ZA755395B (en) 1974-11-25 1975-08-22 Excavating tooth assembly
GB3514475A GB1469620A (en) 1974-11-25 1975-08-26 Excavating tooth assembly
BE159564A BE832863A (fr) 1974-11-25 1975-08-28 Assemblage de dent d'excavation
PH17516A PH11745A (en) 1974-11-25 1975-08-29 Excavating tooth assembly
DE2539118A DE2539118C3 (de) 1974-11-25 1975-09-03 Grabzahn und Halteschuh zum Anbringen an der Schnittkante eines Grabwerkzeuges
JP10791775A JPS5431281B2 (tr) 1974-11-25 1975-09-04
AU84701/75A AU474280B2 (en) 1974-11-25 1975-09-10 Excavating tooth assembly
TR18994A TR18994A (tr) 1974-11-25 1975-09-11 Kazici dis tertibati
BR7505871*A BR7505871A (pt) 1974-11-25 1975-09-12 Conjunto de dente escavador;dente para o conjunto de dentes;e elemento de encaixe para o conjunto de dentes
FR7528186A FR2292077A1 (fr) 1974-11-25 1975-09-15 Assemblage de dent d'excavation
CA286,912A CA1037995A (en) 1974-11-25 1977-09-16 Excavating tooth assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US526589A US3919792A (en) 1974-11-25 1974-11-25 Excavating tooth assembly

Publications (1)

Publication Number Publication Date
US3919792A true US3919792A (en) 1975-11-18

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ID=24097950

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Application Number Title Priority Date Filing Date
US526589A Expired - Lifetime US3919792A (en) 1974-11-25 1974-11-25 Excavating tooth assembly

Country Status (12)

Country Link
US (1) US3919792A (tr)
JP (1) JPS5431281B2 (tr)
AU (1) AU474280B2 (tr)
BE (1) BE832863A (tr)
BR (1) BR7505871A (tr)
CA (1) CA1022212A (tr)
DE (1) DE2539118C3 (tr)
FR (1) FR2292077A1 (tr)
GB (1) GB1469620A (tr)
PH (1) PH11745A (tr)
TR (1) TR18994A (tr)
ZA (1) ZA755395B (tr)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231173A (en) * 1977-02-18 1980-11-04 Esco Corporation Excavating tooth
FR2545122A1 (fr) * 1983-04-26 1984-11-02 Liebherr France Dent pour benne preneuse ou pelle pour pelles excavatrices hydrauliques, chargeuses ou analogues
US4516340A (en) * 1983-06-06 1985-05-14 Launder Richard L Attachment assembly for excavation teeth
US4642920A (en) * 1984-12-06 1987-02-17 Lehnhoff Hartstahl Gmbh & Co. Digger tooth arrangement
US4716667A (en) * 1986-09-25 1988-01-05 Gh Hensley Industries, Inc. Excavating tooth and wear cap assembly
EP0258507A1 (en) * 1985-12-19 1988-03-09 Allan James Yeomans Digging point assembly
US5426875A (en) * 1994-04-18 1995-06-27 Pengo Corporation Reversible tooth with adjustable attack angle
US5564508A (en) * 1995-08-03 1996-10-15 Caterpillar Inc. Replacable wear runner
WO1997017499A1 (en) * 1995-11-06 1997-05-15 Esco Corporation Wear assembly for a digging edge of an excavator
US5634285A (en) * 1995-09-29 1997-06-03 Caterpillar Inc. Base edge cover for a bucket and apparatus for retaining same
US6240663B1 (en) 2000-09-18 2001-06-05 G. H. Hensley Industries, Incorporated Streamlined resilient connection system for attaching a wear member to an excavating lip structure
USH2020H1 (en) * 1999-10-29 2002-05-07 Caterpillar Inc. Tip and adapter for an earthworking bucket
US20030110668A1 (en) * 1998-06-08 2003-06-19 Metalogenia, S.A. Device for the coupling of excavator teeth
US20030121185A1 (en) * 2001-11-09 2003-07-03 Esco Corporation Assembly for securing a wear member to an excavator
US20040010949A1 (en) * 2000-10-03 2004-01-22 Laguarda Lluis Morales Coupling system for the teeth of an excavator
US20040244235A1 (en) * 1999-10-01 2004-12-09 Matalogenia, S.A. Assemblies of teeth of earth moving machines
US20050229442A1 (en) * 2004-03-30 2005-10-20 Esco Corporation Wear edge assembly
US20060143953A1 (en) * 2002-12-23 2006-07-06 Magnus Karlsson Wearing parts system for detachable fitting of wearing parts for the tool of a cultivating machine
US20070204490A1 (en) * 2004-03-30 2007-09-06 Esco Corporation Wear assembly
USRE40336E1 (en) 1998-07-03 2008-05-27 Metalogenia Patentes, S.L. Coupling for the teeth of excavators and the like
US20090000159A1 (en) * 2007-06-01 2009-01-01 Ihc Holland Ie B.V. Tooth system
US20090314504A1 (en) * 2008-06-19 2009-12-24 Blake Neudorf Tool mounting adapter for an agricultural implement
US20090320333A1 (en) * 2006-09-01 2009-12-31 Metalogenia, S.A. Tooth and adaptor for dredging machine
US8578637B2 (en) 2007-05-10 2013-11-12 Esco Corporation Wear assembly for excavating equipment
US9404240B2 (en) 2013-11-07 2016-08-02 Caterpillar Inc. Bucket lip protection assemblies and lip adapters for same
US20180142447A1 (en) * 2016-11-18 2018-05-24 Harnischfeger Technologies, Inc. Modular ground engagement tooling system
CN110566203A (zh) * 2019-09-29 2019-12-13 徐工集团工程机械股份有限公司科技分公司 工程机械机具快拆连接结构

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US888047A (en) * 1907-12-27 1908-05-19 Taylor Iron And Steel Company Tooth for excavating-shovels.
US2050014A (en) * 1934-12-10 1936-08-04 American Manganese Steel Co Box type cap for excavating teeth
US2311463A (en) * 1941-12-12 1943-02-16 John W Page Bucket tooth
US2339128A (en) * 1942-03-11 1944-01-11 Electric Steel Foundry Digger tooth construction
US2919506A (en) * 1958-04-21 1960-01-05 Electric Steel Foundry Co Excavating tooth and base support therefor
US3079710A (en) * 1961-06-22 1963-03-05 Esco Corp Ground-working tooth and method
US3349508A (en) * 1965-09-07 1967-10-31 Petersen Anita E Tooth with t-shaped shank
US3530601A (en) * 1966-02-17 1970-09-29 Page Eng Co Tooth point assembly for earth digging structures

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US3466772A (en) * 1967-05-25 1969-09-16 Corona Forge Co Resilient retaining means
DE1634918A1 (tr) * 1967-07-29 1970-12-03

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US888047A (en) * 1907-12-27 1908-05-19 Taylor Iron And Steel Company Tooth for excavating-shovels.
US2050014A (en) * 1934-12-10 1936-08-04 American Manganese Steel Co Box type cap for excavating teeth
US2311463A (en) * 1941-12-12 1943-02-16 John W Page Bucket tooth
US2339128A (en) * 1942-03-11 1944-01-11 Electric Steel Foundry Digger tooth construction
US2919506A (en) * 1958-04-21 1960-01-05 Electric Steel Foundry Co Excavating tooth and base support therefor
US3079710A (en) * 1961-06-22 1963-03-05 Esco Corp Ground-working tooth and method
US3349508A (en) * 1965-09-07 1967-10-31 Petersen Anita E Tooth with t-shaped shank
US3530601A (en) * 1966-02-17 1970-09-29 Page Eng Co Tooth point assembly for earth digging structures

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231173A (en) * 1977-02-18 1980-11-04 Esco Corporation Excavating tooth
FR2545122A1 (fr) * 1983-04-26 1984-11-02 Liebherr France Dent pour benne preneuse ou pelle pour pelles excavatrices hydrauliques, chargeuses ou analogues
US4516340A (en) * 1983-06-06 1985-05-14 Launder Richard L Attachment assembly for excavation teeth
US4642920A (en) * 1984-12-06 1987-02-17 Lehnhoff Hartstahl Gmbh & Co. Digger tooth arrangement
EP0258507A1 (en) * 1985-12-19 1988-03-09 Allan James Yeomans Digging point assembly
US4762184A (en) * 1985-12-19 1988-08-09 Yeomans Allan J Digging point assembly
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AU8470175A (en) 1976-07-15
ZA755395B (en) 1976-07-28
JPS5162501A (tr) 1976-05-31
FR2292077A1 (fr) 1976-06-18
TR18994A (tr) 1978-02-08
PH11745A (en) 1978-05-30
DE2539118A1 (de) 1976-08-12
DE2539118C3 (de) 1981-05-07
AU474280B2 (en) 1976-07-15
GB1469620A (en) 1977-04-06
DE2539118B2 (de) 1980-08-07
CA1022212A (en) 1977-12-06
JPS5431281B2 (tr) 1979-10-05
BE832863A (fr) 1975-12-16
FR2292077B1 (tr) 1981-05-08
BR7505871A (pt) 1976-08-10

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