US20240084558A1 - Spring steel sleeve design - Google Patents
Spring steel sleeve design Download PDFInfo
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- US20240084558A1 US20240084558A1 US18/514,375 US202318514375A US2024084558A1 US 20240084558 A1 US20240084558 A1 US 20240084558A1 US 202318514375 A US202318514375 A US 202318514375A US 2024084558 A1 US2024084558 A1 US 2024084558A1
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- United States
- Prior art keywords
- spring
- sidewall
- spring loaded
- loaded retainer
- flat
- Prior art date
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- 229910000639 Spring steel Inorganic materials 0.000 title description 4
- 238000013461 design Methods 0.000 title description 2
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- 230000000712 assembly Effects 0.000 description 7
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- 229920001971 elastomer Polymers 0.000 description 2
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- 230000008569 process Effects 0.000 description 2
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- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- -1 dirt Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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Images
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
- E02F9/2833—Retaining means, e.g. pins
- E02F9/2841—Retaining means, e.g. pins resilient
-
- 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
-
- 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
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
- F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/025—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by having a particular shape
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Springs (AREA)
- Vehicle Body Suspensions (AREA)
- Dowels (AREA)
Abstract
A spring loaded retainer includes a lug receiving portion defining a first maximum outside dimension, the lug receiving portion also defining a lug receiving slot that extends partially through the lug receiving portion, forming a first sidewall, a second sidewall, and a catch surface connecting the first sidewall to the second sidewall. A drive portion defines a second maximum outside dimension, and a first flat is disposed on the outside of the lug receiving portion proximate to the first sidewall or the second sidewall.
Description
- This application is a divisional application of application Ser. No. 16/392,959, filed on Apr. 24, 2019, having the same title, claiming priority thereto and incorporating its contents herein by reference in its entirety.
- The present disclosure relates to retaining mechanisms employed on work implement assemblies such as bucket assemblies used by earth moving, mining, construction equipment and the like for attaching a tip to an adapter of the work implement assembly. More specifically, the present disclosure relates to a retaining mechanism that uses a spring steel sleeve design to hold a retainer of the retaining mechanism in a locked or unlocked configuration.
- Machines such as wheel loaders, excavators, and the like employ work implement assemblies including bucket assemblies, rakes, shears, etc. that have teeth or tips attached to them to help perform work on a material such as dirt, rock, sand, etc. For example, teeth or tips may be attached to a bucket assembly to help the bucket assembly to penetrate the ground, facilitating the scooping of the dirt into a bucket. Adapters are often attached to the work edges (e.g. the base edge, the side edge, etc.) of the bucket or other work implement so that different styles of teeth or tips may be attached to the work implement. Also, the tips or teeth may be replaced easily when worn by providing a retaining mechanism that is used to selectively hold the tip onto the adapter or to allow the tip be removed from the adapter.
- U.S. Pat. No. 9,222,243 B2 discloses a wear assembly for use on various kinds of earth working equipment that includes a base with a supporting portion, a wear member with a cavity into which the supporting portion is received, and a lock to releasably secure the wear member to the base. The supporting portion is formed with the top and bottom recesses that receive complementary projections of the wear member. These recesses and projections include aligned holes so as to receive and position the lock centrally within the wear assembly and remote from the wear surface. The lock includes a mounting component that defines a threaded opening for receiving a threaded pin that is used to releasably hold the wear member to the base. A retaining clip is provided to prevent rotation of the mounting component.
- However, the retaining clip in the '243 patent does not solve all problems associated with the retaining mechanisms such as preventing the packing of mud or other material into the retaining mechanism, which may hinder its performance. Furthermore, the retaining clip in the '243 may increase the force necessary to unlock the retaining mechanism to an undesirable extent, etc.
- A spring and spring loaded retainer combination according to an embodiment of the present disclosure comprises a spring having a folded body including a flat base defining a front face, a rear face, a first side edge, a second side edge, a top edge, a bottom edge, and a flat base thickness measured from the front face to the rear face; and a first spring arm extending from the first side edge of the flat base, the first spring arm including a first arcuate portion extending rearwardly from the flat base, a first straight portion extending from the first arcuate portion and disposed proximate to the rear face, the first straight portion defining a first external obtuse angle with the rear face, and a first straight portion length. A flange extends from the bottom edge of the flat base. A spring loaded retainer may also be provided that includes a lug receiving portion defining a first maximum outside dimension, the lug receiving portion also defining a lug receiving slot that extends partially through the lug receiving portion, forming a first sidewall, a second sidewall, a catch surface connecting the first sidewall to the second sidewall, and a bottom surface. A drive portion of the spring loaded retainer defines a second maximum outside dimension and a first flat disposed on the outside of the lug receiving portion that is configured to contact the flat base of the spring. The flange of the spring is configured to contact the bottom surface of the lug receiving portion of the spring loaded retainer.
- A spring loaded retainer according to an embodiment of the present disclosure comprises a lug receiving portion defining a first maximum outside dimension, the lug receiving portion also defining a lug receiving slot that extends partially through the lug receiving portion, forming a first sidewall, a second sidewall, and a catch surface connecting the first sidewall to the second sidewall; a drive portion defining a second maximum outside dimension; and a first flat disposed on the outside of the lug receiving portion.
-
FIG. 1 is a perspective view of a work implement assembly such as a bucket assembly using tips, adapters, and retaining mechanisms with components configured according to various embodiments of the present disclosure. -
FIG. 2 is a perspective view of a tip and adapter subassembly ofFIG. 1 , shown in isolation from the work implement assembly ofFIG. 1 . -
FIG. 3 is a side sectional view of the tip ofFIG. 2 without the adapter, showing a retaining mechanism and its components according to an embodiment of the present disclosure in a locked configuration. -
FIG. 4 is a rear sectional view of the tip ofFIG. 3 without any retaining mechanism being shown, revealing more clearly the retaining mechanism receiving apertures of the tip. -
FIG. 5 is an enlarged detail view of the tip ofFIG. 4 illustrating a retaining mechanism and its components being assembled into the retaining mechanism receiving aperture of the tip. The spring loaded retainer is shown in an unlocked configuration. -
FIG. 6 depicts the retaining mechanism ofFIG. 5 fully assembled into the retaining mechanism receiving aperture of the tip. The spring loaded retainer is shown in the unlocked configuration. -
FIG. 7 is a side view of the tip and the spring loaded retainer ofFIG. 6 with the spring loaded retainer being rotated into a locking configuration. -
FIG. 8 is a rear sectional view similar toFIG. 6 except that the spring loaded retainer is now in the unlocked configuration and a second spring is being inserted into the retaining mechanism receiving aperture with the spring loaded retainer in the unlocked configuration. -
FIG. 9 is a perspective view of the spring loaded retainer ofFIGS. 5 thru 8 shown in isolation. Two flats are employed for this embodiment of the spring loaded retainer. -
FIG. 10 is a flat pattern of the spring ofFIGS. 5 thru 8 before being bent into a desired shape. -
FIG. 11 is a perspective view of the spring ofFIGS. 5 thru 8 after being bent into a desired shape. -
FIG. 12 is a front view of the spring ofFIG. 11 . -
FIG. 13 is a partial enlarged top view of the spring ofFIG. 11 showing the configuration of a spring arm that extends from the base of the spring more clearly. -
FIG. 14 illustrates two springs that are identically configured to the spring ofFIG. 11 used to hold a spring loaded retainer according to another embodiment of the present disclosure with only one flat. -
FIG. 15 illustrates a spring contacting a spring loaded retainer tangentially such as shown on the right side ofFIG. 14 . -
FIG. 16 illustrates the upward movement of the spring, contacting the flat of the spring loaded retainer such as shown on the left side ofFIG. 14 . -
FIG. 17 shows an insert being inserted into the spring ofFIG. 11 between the spring arms of the spring and the base of the spring. -
FIG. 18 shows the spring with the insert ofFIG. 17 fully assembled. -
FIG. 19 is a perspective view of the adapter ofFIG. 2 shown in isolation, revealing the rail disposed behind the lug on the nose of the adapter according to an embodiment of the present disclosure. -
FIG. 20 is an enlarged side detail view of the lug and the rail on the nose of adapter ofFIG. 19 so that the arcuate profile of the front portion of the rail may be more clearly seen. -
FIG. 21 shows a spring loaded retainer mounted on the lug of the nose of the adapter ofFIG. 20 , illustrating how the arcuate profile of the front portion of the rail allows the spring loaded retainer to rotate while helping to prevent mud or other debris from entering the tip from behind the tip. -
FIG. 22 is a rear sectional view of the tip and adapter ofFIG. 2 that enhances the understanding of how the perimeter of the nose and the presence of the rails of the adapter help prevent mud or other debris from entering the adapter nose receiving pocket of the tip without interfering with the assembly of the tip onto the nose of the adapter. - Reference will now be made in detail to embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. In some cases, a reference number will be indicated in this specification and the drawings will show the reference number followed by a letter for example, 100 a, 100 b or a prime indicator such as 100′, 100″ etc. It is to be understood that the use of letters or primes immediately after a reference number indicates that these features are similarly shaped and have similar function such as is often the case when geometry is mirrored about a plane of symmetry. For ease of explanation in this specification, letters or primes will often not be included herein but may be shown in the drawings to indicate duplications of features discussed within this written specification.
- A work implement assembly using tips according to various embodiments of the present disclosure will now be discussed.
- Starting with
FIG. 1 , thework implement assembly 100 may take the form of abucket assembly 100′ that may be used by a wheel loader and that includes anenclosure 101 that defines anopening 102 that communicates with a generally enclosed interior. Starting from the rear of thebucket assembly 100 as shown inFIG. 1 , thebucket assembly 100 includes acurved shell profile 104, which is attached to arear wall 106 at the top end of theshell 104. The other end of the shell is attached to thebottom plate 108 of theassembly 100. Atop plate 110 is attached to the top end of therear wall 106. Thetop plate 110 transitions to aspill guard 112 that is designed to funnel material into the interior of the bucket and prevent material from spilling out of the bucket. Reinforcingribs 118 are provided that are attached to thetop plate 110 and thespill guard 112, providing reinforcement for strength. Two substantiallyflat end plates 114 are attached to the side edges of thespill guard 112,top plate 110,rear wall 106,bottom plate 108 andshell 104. - A
side edge assembly 115 is attached to eachend plate 114 while afront edge assembly 116 is attached to the front edge of thebottom plate 108 of thebucket assembly 100. Thefront edge assembly 116 includes abase edge 117 that is attached to thebottom plate 108, a plurality ofcenter adapters 118 attached to thebase edge 117, and a plurality of tips 200 (may also be referred to as tools, teeth, etc.) with each one of the plurality oftips 200 being attached to one of the plurality ofcenter adapters 118. Also, twocorner adapters 120 are also attached to the base edge and the side edges 122 of thebucket assembly 100′.Tip 200 may also be attached to thecorner adapters 120. - Moreover, a plurality of
base edge protectors 124 are also provided with each one of thebase edge protectors 124 positioned betweencenter adapters 120 and between acenter adapter 120 and acorner adapter 120. Aside edge protector 126 is also provided that is attached to theside edge 122 proximate to acorner adapter 120. - It is to be understood that the work implement assembly may take other forms other than a bucket assembly including rake assemblies, shear assemblies, etc. In addition, a differently configured bucket that is meant to be used by an excavator may also use various embodiments of a tip, retaining mechanism, adapter, spring, spring loaded retainer, tip assembly, and tip and adapter assembly, etc. as will be discussed herein.
- A
tip 200 according to an embodiment of the present disclosure will now be discussed with reference toFIGS. 2 thru 8, 15, and 16 that may be used with a spring loadedretainer 300 and aspring 400 according to various embodiments of the present disclosure. - Starting with
FIGS. 2 thru 6, thetip 200 may comprise abody 202 that defines alongitudinal axis 204, avertical axis 206 that is perpendicular to thelongitudinal axis 204, and alateral axis 208 that is perpendicular to thevertical axis 206, and thelongitudinal axis 204. Thebody 202 may include a forward workingportion 210 disposed along thelongitudinal axis 204 including aclosed end 212, and arear attachment portion 214 disposed along thelongitudinal axis 204 including anopen end 216. As best seen inFIG. 4 , thebody 202 may define a vertical plane ofsymmetry 228. This may not be the case in other embodiments of the present disclosure. - Focusing on
FIGS. 3 thru 6, therear attachment portion 214 defines anexterior surface 218, an adapternose receiving pocket 220 extending longitudinally from theopen end 216, and a retainingmechanism receiving aperture 222 in communication with the adapternose receiving pocket 220 and theexterior surface 218. An adapter noselug receiving groove 224 may extend longitudinally from theopen end 216 to the retainingmechanism receiving aperture 222. At least onespring receiving slot 226 may be in communication with the retainingmechanism receiving aperture 222 and the adapternose receiving pocket 220. - Looking at
FIG. 5 , the at least onespring receiving slot 226 includes a springbase receiving portion 228 extending laterally from the adapternose receiving pocket 220 and terminating at avertical face 230. Also, a springarm receiving portion 232 may extend vertically from the springbase receiving portion 228 and terminate laterally at a firstvertical surface 234 disposed laterally between the adapternose receiving pocket 220 and thevertical face 230. The springarm receiving portion 232 may also terminate laterally at a secondvertical surface 236 disposed laterally between the firstvertical surface 234 and thevertical face 230 of the adapternose receiving pocket 220. - The
body 202 may define an upper vertical extremity 238 of the retainingmechanism receiving aperture 222, and a lowervertical extremity 240 of the retainingmechanism receiving aperture 222. The at least onespring receiving slot 226 may be disposed proximate to the upper vertical extremity 238 or the lowervertical extremity 240. In some embodiments such as shown inFIG. 5 , two such slots are provided with one at the upper vertical extremity and one at the lower vertical extremity. - In some embodiments, the at least one
spring receiving slot 226 may be disposed proximate to the lowervertical extremity 240. Thebody 202 may include a lead-in surface 242 (e.g. a fillet or a chamfer, etc.) extending from the adapternose receiving pocket 220 to the springbase receiving portion 228 of the at least onespring receiving slot 226. - With continued reference to
FIG. 5 , the retainingmechanism receiving aperture 222 includes a firstcylindrical portion 244 extending from theexterior surface 218, a secondcylindrical portion 246 extending from the adapternose receiving pocket 222 to the firstcylindrical portion 244. Hence, the adapternose receiving pocket 220 is in communication with the exterior of thetip 220 through the retainingmechanism receiving aperture 222. For the embodiment shown inFIG. 5 , the firstcylindrical portion 244 defines a firstcylindrical portion radius 248, and the secondcylindrical portion 246 defines a secondcylindrical portion radius 250 that is greater than firstcylindrical portion radius 248, forming thevertical face 230. Other configurations are possible in other embodiments of the present disclosure. - Next, referring to
FIGS. 2, 3, 5 and 6 , atip assembly 500 according to an embodiment of the present disclosure will now be discussed. Thetip assembly 500 may comprise atip 200 that is configured similarly to what has just been previously described herein. In addition, looking atFIGS. 3, 5 and 6 , thetip assembly 500 may comprise a spring loadedretainer 300 that is disposed in the retainingmechanism receiving aperture 222. The spring loadedretainer 300 may be configured to be accessible from theexterior surface 218 so that a user may use a tool to drive or rotate the spring loaded retainer from an unlocked to a locked configuration, or vice versa. Aspring 400 may be disposed in the at least onespring receiving slot 226 such that thespring 400 is interposed vertically between thebody 202 of thetip 200 and the spring loadedretainer 300. - In
FIGS. 5 and 6 , thespring 400 may also include aflange portion 402 disposed laterally between spring loadedretainer 300 and the adapternose receiving pocket 220, helping to keep the spring loadedretainer 300 properly retained in the tip 200 (flange may be configured contact the bottom surface of the spring loaded retainer). Also, thespring 400 may include at least onespring arm 404 vertically disposed in the springarm receiving portion 232 of the at least onespring receiving slot 226, and laterally proximate to the firstvertical surface 234. Hence, thespring 400 is biased to be held in position while also holding the spring loadedretainer 300 in position. A base 406 may be disposed in the springbase receiving portion 228 of the at least onespring receiving slot 226. The base 406 may contact the spring loadedretainer 300, helping to take up any stack up tolerances between the spring loadedretainer 300 and thetip 200, and to cause resistance from unintentionally rotating the spring loadedretainer 300, etc. The springarm receiving portion 232 also terminates laterally at a secondvertical surface 236 disposed laterally between the firstvertical surface 234 and thevertical face 230 of the adapternose receiving pocket 220, and the at least onespring arm 404 is disposed laterally proximate to the secondvertical surface 236, helping to prevent movement of thespring 400 toward the exterior of thetip 200. - In
FIG. 6 , thebase 406 of thespring 400 may be spaced laterally away from the vertical face 230 apredetermined distance 502 ranging from 0 mm to 6.5 mm. This distance may be varied to be different in other embodiments of the present disclosure, or the base 406 may contact thevertical face 230 in other embodiments of the present disclosure such as when the secondvertical surface 236 is coextensive with thevertical face 230. - The at least one
spring receiving slot 226 may take the form of a firstspring receiving slot 226′ disposed proximate to the lowervertical extremity 240 of the retainingmechanism receiving aperture 222. The at least onespring 400 may include afirst spring 400′ that is disposed in the firstspring receiving slot 226′ disposed proximate to the lowervertical extremity 240. Thebody 202 of thetip 200 may include a lead-insurface 242 extending from the adapternose receiving pocket 220 to the springbase receiving portion 228 of the at least onespring receiving slot 226. - A second
spring receiving slot 226″ may be disposed proximate to the upper vertical extremity 238, and asecond spring 400″ may be disposed in the secondspring receiving slot 226″ that also contacts the spring loadedretainer 300. - The
first spring 400′ may be identical to thesecond spring 400″ but not necessarily so. Likewise, the firstspring receiving slot 226′ may be similarly configured as the secondspring receiving slot 226′. That is to say, the slots are virtually identical except that they are bounded by anangled surface 252 forming the adapter nose receiving pocket so that the second spring receiving slot looks slightly different than the first spring receiving slot. This may not be the case in other embodiments and the configurations of the various springs and their associated slots may be tailored as needed to be different than what is shown inFIG. 6 for other applications, etc. - For example, in
FIGS. 5 and 6 , the spring loadedretainer 300 includes a first flat 302 and thebase 406 of thespring 400 contacts the first flat 302 of the spring loadedretainer 300. Furthermore, the spring loadedretainer 300 may include a second flat 304 and thesecond spring 400″ may contact the second flat 304. In such an embodiment,FIG. 5 illustrates how thesprings 400′, 400″ may be assembled into thetip 200 by rotating the spring loadedretainer 300 so that itsflats springs 400′, 400″ and the spring loadedretainer 300 is minimized, reducing the amount of assembly force necessary. -
FIGS. 8 and 14 illustrate that when twosprings 400′, 400″ are used with a spring loadedretainer 300 having only one flat 302, it is easier to assemble onespring 400′ after the flat 302 is aligned with the slot into which the spring is going to be inserted. Once thefirst spring 400′ is properly assembled, then the spring loadedretainer 300 is rotated so that the flat 302 is oriented with the opposite slot, easing the assembly of thesecond spring 400″ into that slot, or vice versa. -
FIGS. 15 and 16 show an embodiment where only asingle spring 400 and flat 302 on the spring loadedretainer 300 are used. Specifically,FIG. 15 illustrates aspring 400 contacting a spring loadedretainer 300 tangentially such as shown on the right side ofFIG. 14 , whileFIG. 16 illustrates the movement of thespring 400, contacting the flat 302 of the spring loadedretainer 300 such as shown on the left side ofFIG. 14 . When assembling the embodiment shown inFIGS. 15 and 16 , it is easiest to have the flat 302 oriented as shown inFIG. 16 .Arrow 504 indicates that spring arm movement causes thespring 400 to be trapped in theslot 226′. - Looking at
FIGS. 3 and 9 , various features of a spring loadedretainer 300 according to an embodiment of the present disclosure will now be described. The spring loadedretainer 300 may comprise alug receiving portion 306 defining a first maximum outside dimension 308, and alug receiving slot 310 that extends partially through thelug receiving portion 306, forming afirst sidewall 312, asecond sidewall 312′, and a catch surface 314 (so called as it contacts or nearly contacts the lug of the adapter in use) connecting thefirst sidewall 312 to thesecond sidewall 312′. The spring loadedretainer 300 may also include a drive portion 316 defining a second maximum outsidedimension 318. A first flat 302 may be disposed on the outside of thelug receiving portion 306 proximate to thefirst sidewall 312 or thesecond sidewall 312′. The drive portion may define a polygonal shaped aperture (e.g., may be square shaped) in some embodiments. - More particularly when looking at
FIG. 9 , thelug receiving portion 306 may include a lug receivingcylindrical portion 320 including an outsidecylindrical surface 322 defining aradial direction 324, acircumferential direction 326, and acylindrical axis 328. In such an embodiment, the first maximum outside dimension 308 may take the form of an outside cylindrical surface diameter 330 (see alsoFIG. 8 ). Also, and the drive portion 316 may include a drive cylindrical portion 332, and the second maximum outsidedimension 318 may take the form of a drivecylindrical portion diameter 334 that is less than the outside cylindrical surface diameter 330 of the lug receivingcylindrical portion 320. The configurations of these features may be something other than cylindrical in other embodiments such as conical, etc. - Still referring to
FIG. 9 , the first flat 302 may be disposed on the outsidecylindrical surface 322, and may be circumferentially aligned with thefirst sidewall 312 as shown. Optionally, the spring loadedretainer 300 may further comprise a second flat 304 disposed on the outsidecylindrical surface 322 that is also circumferentially aligned with thesecond sidewall 312′. Astop projection 336 may extend axially away from the drive portion 316 that is circumferentially aligned with the first flat 302. Other configurations are possible. - Turning now to
FIGS. 10 thru 13, aspring 400 according to an embodiment of the present disclosure will now be discussed. -
FIG. 10 shows that the manufacture of thespring 400 may start with aflat pattern 408 made from a metal (e.g. spring steel) that is bent via a progressive stamping die process or similar fabrication technique into the desired final shape. Theflat pattern 408 is shown withbend regions 410 indicated that are turned by the folding process into the various arcuate portions of thespring 400 as will now be described. - In
FIGS. 11 thru 13, thespring 400 may be turned into a foldedbody 412 including aflat base 406′ defining afront face 414, arear face 416, afirst side edge 418, asecond side edge 420, atop edge 422, abottom edge 424, and a flat base thickness 426 (minimum dimension, seeFIG. 13 ) measured from thefront face 414 to therear face 416 ranging from 0.25 mm to 1.5 mm. - A
first spring arm 428 may extend from thefirst side edge 418 of theflat base 406′. As best seen inFIG. 13 , thefirst spring arm 428 may include a firstarcuate portion 430 extending rearwardly from theflat base 406′, and a firststraight portion 432 extending from the firstarcuate portion 430 that is disposed proximate to therear face 416. That is to say thefirst spring arm 428 is first folded toward theflat base 406′. The firststraight portion 432 may define a first externalobtuse angle 434 with therear face 416 ranging from 120 degrees to 170 degrees, and a firststraight portion length 436 ranging from 4.0 mm to 7.0 mm. Other configurations and dimensions are possible for any of these features in other embodiments of the present disclosure. - With continued reference to
FIG. 13 , thespring 400 may further comprise a secondarcuate portion 438 extending rearwardly from the firststraight portion 432, and a secondstraight portion 440 extending from the secondarcuate portion 438 that is disposed proximate to the firststraight portion 432. The secondstraight portion 440 may define a second externalobtuse angle 442 with the firststraight portion 432 ranging from 110 degrees to 160 degrees, and a secondstraight portion length 444 ranging from 4.0 mm to 7.0 mm. Hence, thefirst spring arm 428 extends along a first serpentine path from theflat base 406′. Other configurations are possible. - The
spring 400 may further comprise a thirdarcuate portion 446 extending forwardly from the secondstraight portion 440, and a thirdstraight portion 448 extending from the thirdarcuate portion 446 that is disposed proximate to the firstarcuate portion 430. The thirdstraight portion 448 may define a first externalacute angle 450 with the secondstraight portion 440 ranging from 20 degrees to 60 degrees, and a thirdstraight portion length 452 ranging from 0.75 mm to 3.0 mm. So, a downward ramp angled toward the outside of the spring is formed that may aid in installing thespring 400 into the tip. -
FIG. 13 depicts that theflat base 406′ may define amidplane 454 disposed between thefirst side edge 418, and thesecond side edge 420. Thespring 400 may be symmetrical about themidplane 454 such that a second spring arm may extend from the second side edge of the flat base, forming a second serpentine path. This may not be the base for other embodiments. For example, there may only be one spring arm provided or differently configured spring arms may be provided, etc. - As alluded to earlier herein,
FIGS. 11 thru 13 show that thespring 400 may have aflange portion 402 extending frombottom edge 424 of theflat base 406′. Theflange portion 402 includes a flangearcuate portion 456 extending from thebottom edge 424, and a flangestraight portion 458 extending from flangearcuate portion 456. The flangestraight portion 458 defines aright angle 460 with theflat base 406′. The flangestraight portion 458 may define a flangestraight portion length 462 ranging from 2.0 mm to 5.0 mm. Other configurations and dimensions are possible in other embodiments of the present disclosure. - In
FIG. 11 , the foldedbody 412 may also define a firstbend relief cutout 464 disposed along thefirst side edge 418 between thefirst spring arm 428, and thebottom edge 424. A secondbend relief cutout 466 may also be disposed along thesecond side edge 420 between thesecond spring arm 468 and thebottom edge 424. - Looking at
FIG. 12 , theflat base 406′ may define a flat basevertical length 470 measured from thetop edge 422 to thebottom edge 424 ranging from 14.0 mm to 20 0.5 mm, and a flat basehorizontal width 472 measured from thefirst side edge 418 to thesecond side edge 420 ranging from 10.0 mm to 14.0 mm. - In
FIGS. 17 and 18 , aninsert 474 may be disposed between the first and thesecond spring arms flat base 406′, being pressed against therear face 416 of theflat base 406′ by the first and thesecond spring arms insert 474 may comprise at least one of the following materials: Cellasto® (polyurethane elastomer), rubber, and foam. If foam is employed, the foam may be bonded to theflat base 406′. Theinsert 474 may help to prevent mud or other debris from infiltrating into thespring 400, which may hinder its performance. -
FIGS. 2, and 19 thru 22 show anadapter 600 according to an embodiment of the present disclosure with features that may help prevent mud packing or other debris from infiltrating into the adapter nose receiving pocket of the tip after the tip has been assembled onto the adapter. While a version of the adapter shown in these figures is a center adapter, it is to be understood that the adapter may have other configurations including as a corner adapter, etc. Also, the adapter may define a midplane of symmetry as shown in the figures but not necessarily so in other embodiments of the present disclosure. - In
FIGS. 2 and 19 , theadapter 600 may comprise abody 602 that includes anose portion 604 including alug 606 extending from thenose portion 604. Thebody 602 may also include afirst leg 608, asecond leg 610, and athroat portion 612 that connects thelegs nose portion 604 together. The first and thesecond legs throat portion 612 define aslot 614 that includes aclosed end 616 and anopen end 618. Thus, theslot 614 defines a direction ofassembly 620 onto a work implement, alateral direction 622 that is perpendicular to the direction ofassembly 620, and avertical direction 624 that is perpendicular to the direction ofassembly 620 and thelateral direction 622. - Focusing on
FIGS. 19 and 20 , thenose portion 604 may further include arail 626 disposed behind thelug 606 along the direction ofassembly 620. Therail 626 may include a frontarcuate surface 628 defining a front arcuate surface radius ofcurvature 630 ranging from 21.0 mm to 25.0 mm. The frontarcuate surface 628 may be spaced away from the lug 606 a firstminimum distance 632 ranging from 7.0 mm to 12.0 mm. - As best seen in
FIG. 22 , therail 626 defines alateral height 634 ranging from 10.0 mm to 16.0 mm, and avertical width 636 ranging from 25.0 mm to 32.0 mm. - As best seen in
FIG. 20 , therail 626 defines arail length 638 along the direction ofassembly 620 ranging from 38.0 mm to 48.0 mm, and includes arear portion 640 with arear blend 642 connecting thelug 606 to thethroat portion 612. - It is to be understood that the configuration and dimensions associated with these features may be varied to be different in other embodiments of the present disclosure.
- Referring again to
FIG. 22 , a tip andadapter assembly 700 according to an embodiment of the present disclosure may be characterized as follows. The tip andadapter assembly 700 may comprise atip 200 and anadapter 600 with similar or identical configurations as previously discussed herein. The tip andadapter assembly 700 may further includes a spring loadedretainer FIGS. 2 and 21 ). - As best seen in
FIG. 21 , therail 626 may be spaced away from the spring loadedretainer minimum clearance distance 702 ranging from 1.0 mm to 8.0 mm. This may help to ensure that the spring loaded retainer is free to rotate as needed. - In
FIG. 22 , it can be seen that therail 626 may be spaced away from thetip 200 in the adapter noselug receiving groove 220 of the tip 200 a secondminimum clearance distance 704 ranging from 1.0 mm to 6.0 mm. This may help to ensure that the tip can be installed onto the adapter without interference while also helping to limit mud packing or other debris from entering into the adapter nose receiving pocket of the tip. - Again, it should be noted that any of the dimensions, angles, surface areas and/or configurations of various features may be varied as desired or needed including those not specifically mentioned herein. Although not specifically discussed, blends such as fillets are shown to connect the various surfaces. These may be omitted in other embodiments and it is to be understood that their presence may be ignored sometimes when reading the present specification unless specifically mentioned.
- In practice, a machine, a work implement assembly, a tip, an adapter, a tip assembly, a tip and adapter assembly, a spring, a spring loaded retainer, and/or any combination of these various assemblies and components may be manufactured, bought, or sold to retrofit a machine or a work implement assembly in the field in an aftermarket context, or alternatively, may be manufactured, bought, sold or otherwise obtained in an OEM (original equipment manufacturer) context.
- Any of the aforementioned components may be made from any suitable material including iron, grey-cast iron, steel, spring steel, plastic, rubber, foam, etc.
- It will be appreciated that the foregoing description provides examples of the disclosed assembly and technique. However, it is contemplated that other implementations of the disclosure may differ in detail from the foregoing examples. All references to the disclosure or examples thereof are intended to reference the particular example being discussed at that point and are not intended to imply any limitation as to the scope of the disclosure more generally. All language of distinction and disparagement with respect to certain features is intended to indicate a lack of preference for those features, but not to exclude such from the scope of the disclosure entirely unless otherwise indicated.
- As used herein, the articles “a” and “an” are intended to include one or more items, and may be used interchangeably with “one or more.” Where only one item is intended, the term “one” or similar language is used. Also, as used herein, the terms “has”, “have”, “having”, “with” or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.
- Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein.
- It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the apparatus and methods of assembly as discussed herein without departing from the scope or spirit of the invention(s). Other embodiments of this disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the various embodiments disclosed herein. For example, some of the equipment may be constructed and function differently than what has been described herein and certain steps of any method may be omitted, performed in an order that is different than what has been specifically mentioned or in some cases performed simultaneously or in sub-steps. Furthermore, variations or modifications to certain aspects or features of various embodiments may be made to create further embodiments and features and aspects of various embodiments may be added to or substituted for other features or aspects of other embodiments in order to provide still further embodiments.
- Accordingly, this disclosure includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the disclosure unless otherwise indicated herein or otherwise clearly contradicted by context.
Claims (8)
1.-13. (canceled)
14. A spring loaded retainer comprising:
a lug receiving portion defining a first maximum outside dimension, the lug receiving portion also defining a lug receiving slot that extends partially through the lug receiving portion, forming a first sidewall, a second sidewall, and a catch surface connecting the first sidewall to the second sidewall;
a drive portion defining a second maximum outside dimension; and
a first flat disposed on the outside of the lug receiving portion.
15. The spring loaded retainer of claim 14 , wherein the lug receiving portion includes a lug receiving cylindrical portion including an outside cylindrical surface defining a radial direction, a circumferential direction, and a cylindrical axis, and the first maximum outside dimension is an outside cylindrical surface diameter, and the drive portion includes a drive cylindrical portion and the second maximum outside dimension is a drive cylindrical portion diameter that is less than the outside cylindrical surface diameter of the lug receiving cylindrical portion.
16. The spring loaded retainer of claim 15 , wherein the first flat is disposed on the outside cylindrical surface and is circumferentially aligned with the first sidewall, and further comprising a second flat disposed on the outside cylindrical surface that is also circumferentially aligned with the second sidewall.
17. The spring loaded retainer of claim 15 , further comprising a stop projection extending axially away from the drive portion that is circumferentially aligned with the first flat.
18. The spring loaded retainer of claim 14 , wherein the first flat is disposed on the outside of the lug receiving portion proximate to the first sidewall or the second sidewall.
19. The spring loaded retainer of claim 14 , wherein the drive portion defines a polygonal shaped aperture.
20. The spring loaded retainer of claim 19 , wherein the aperture is square shaped.
Priority Applications (1)
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US18/514,375 US20240084558A1 (en) | 2019-04-24 | 2023-11-20 | Spring steel sleeve design |
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US16/392,959 US11124951B2 (en) | 2019-04-24 | 2019-04-24 | Spring steel sleeve design |
US17/342,679 US11873625B2 (en) | 2019-04-24 | 2021-06-09 | Spring steel sleeve design |
US18/514,375 US20240084558A1 (en) | 2019-04-24 | 2023-11-20 | Spring steel sleeve design |
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US17/342,679 Division US11873625B2 (en) | 2019-04-24 | 2021-06-09 | Spring steel sleeve design |
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US17/342,679 Active 2039-10-16 US11873625B2 (en) | 2019-04-24 | 2021-06-09 | Spring steel sleeve design |
US18/514,375 Pending US20240084558A1 (en) | 2019-04-24 | 2023-11-20 | Spring steel sleeve design |
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US17/342,679 Active 2039-10-16 US11873625B2 (en) | 2019-04-24 | 2021-06-09 | Spring steel sleeve design |
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US (3) | US11124951B2 (en) |
EP (1) | EP3959387A1 (en) |
JP (2) | JP7410177B2 (en) |
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USD905765S1 (en) | 2019-03-07 | 2020-12-22 | Caterpillar Inc. | Adapter for a ground engaging machine implement |
US11142894B2 (en) * | 2019-04-24 | 2021-10-12 | Caterpillar Inc. | Tip and adapter assembly using a spring steel sleeve design |
USD894970S1 (en) | 2019-04-24 | 2020-09-01 | Caterpillar Inc. | Adapter for a ground engaging machine implement |
US11365530B2 (en) * | 2019-06-03 | 2022-06-21 | Caterpillar Inc. | Retainer sleeve |
USD945499S1 (en) | 2020-11-18 | 2022-03-08 | Caterpillar Inc. | Adapter for a ground engaging machine implement |
USD945498S1 (en) | 2020-11-18 | 2022-03-08 | Caterpillar Inc. | Adapter for a ground engaging machine implement |
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-
2019
- 2019-04-24 US US16/392,959 patent/US11124951B2/en active Active
-
2020
- 2020-03-12 JP JP2021563163A patent/JP7410177B2/en active Active
- 2020-03-12 WO PCT/US2020/022273 patent/WO2020219170A1/en unknown
- 2020-03-12 AU AU2020261737A patent/AU2020261737B2/en active Active
- 2020-03-12 CA CA3136318A patent/CA3136318A1/en active Pending
- 2020-03-12 PE PE2021001730A patent/PE20212378A1/en unknown
- 2020-03-12 MX MX2021012665A patent/MX2021012665A/en unknown
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- 2020-03-12 CN CN202080030036.8A patent/CN113710853A/en active Pending
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- 2023-11-20 US US18/514,375 patent/US20240084558A1/en active Pending
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AU2020261737B2 (en) | 2023-11-02 |
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JP2022529842A (en) | 2022-06-24 |
US11124951B2 (en) | 2021-09-21 |
JP7410177B2 (en) | 2024-01-09 |
US11873625B2 (en) | 2024-01-16 |
ZA202108039B (en) | 2023-07-26 |
CA3136318A1 (en) | 2020-10-29 |
MX2021012665A (en) | 2021-11-12 |
US20210293003A1 (en) | 2021-09-23 |
PE20212378A1 (en) | 2021-12-23 |
AU2020261737A1 (en) | 2021-11-18 |
JP2024010172A (en) | 2024-01-23 |
CL2021002725A1 (en) | 2022-05-27 |
WO2020219170A1 (en) | 2020-10-29 |
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