CA1283939C - Positive keeper means for pins of earthworking tips - Google Patents
Positive keeper means for pins of earthworking tipsInfo
- Publication number
- CA1283939C CA1283939C CA000555963A CA555963A CA1283939C CA 1283939 C CA1283939 C CA 1283939C CA 000555963 A CA000555963 A CA 000555963A CA 555963 A CA555963 A CA 555963A CA 1283939 C CA1283939 C CA 1283939C
- Authority
- CA
- Canada
- Prior art keywords
- pin
- washer
- groove
- bore
- ring
- 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 - Fee Related
Links
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
Landscapes
- 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)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Holders For Apparel And Elements Relating To Apparel (AREA)
- Catching Or Destruction (AREA)
Abstract
Abstract of the Disclosure Positive Keeper Means For Pins of Earthworking Tips The invention relates to a pin retainer assembly having a keeper means for retaining earthworking tips on adapters. Positive retention of earthworking tips on their adapters by their retaining pins during its work cycle is extremely important from an operational as well as a cost standpoint. The loss of the tips materially affect productions in addition to the time consuming expense of replacement of repair of the components. Not only must the tips be adequately retained, they must be capable of quick removal for replacement purposes. Keeper means for the pin is captured in a recess between a nose of the adapter and a sidewall of the tips and includes a washer slidably disposed on the pin and a resilient retaining ring having a predetermined radial thickness disposed in locking engagement in a groove on the pin and a groove of the washer. One of the grooves in the pin and the washer has a depth equal to or greater than the predetermined radial thickness of the retaining ring and the other one of the grooves has a depth sufficient to prevent camming of the ring out of the groove and to provide substantially the maximum cross-section width of the ring in shear. In order to disassemble the pin, the ring must be sheared or the washer (46) fractured.
Description
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Description Positiv0 Keeper Means For Pins Of Earthworking Tips Technical Field This invention relates generally to a pin retainer assembly for securing an earthworking tip to ~n adapter on an earthworking device and more particularly to a keeper means for positiv~ly securing the pin in the apertures in the tip and the bore in the nose of the adapter.
Back~round Art Replaceable earthworking tips or teeth commonly used on rippers, loader buckets and trenchers must be positively secured in place on their support adapters and yet be capable of quick removal for ; replacement purposes. In addition to the monetary ~value of the tip that is lost, the loss of the tip will subject the adapter to damage requiring time consuming expensive repairs and/or replacement.
Loss of the tip, when used in conjunction with rock crushing equipment, causes severe damage to the equipment should it become digested or jammed therein.
Prior art retaining pins for securing an -earthworkins tip on its adapter have not been totally ~ -successful especially when used in combination with impact rippers. In such appIication, the retaining plns are subjected to extreme vibration resulting in breakage of the pins or the retaining mechanism becoming loose causing loss of the pin and the tip.
TypicalIy, retaining de~ices have been empIoyed which relies ~n friction between mating ~ sur~aces for retention. U.S. Patent 3,624,827 issued ;~ 35 ~ ~ ~
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., . . : : : -33~39 to Richard R. Liess et al on November 30, 1971 discloses a retaining pin having a friction ring disposed in a deep, wide, central groove of the pin.
The pin is retained in a hore defined by the adapter nose solely by friction between the ring and the bore.
Although this type o~ pin has been successful in normal ripper and bucket tip retaining applications, the central groove materially reduces the strength of the pin and subjects it to early ~ailure in extremely severe applications. In addition, the pin can vibrate out of the bore since it is not positively retained.
U.S. Patent 3,959,901 issued to Gene R.
Klett on June~l, 1976 discloses another friction type retaining device in which the pin is retained solely by frictional engagement of the retaining pin with a lock ring~ As before, vibration allows the pin to work its way loose resulting in loss of the pin and the separation of the tip from the adapter.
U.S. Patent No. 3,952j433 issued to Lloyd K. Heinold, et al on~April 27, 1976 and U.S.
Patent No. 3,990,162 issued to Lloyd K. Heinold, et al on November 9, 1976 disclose spring clips that straddle diametrially opposite sides of the retaining pin in expanded friction engagement. The clips are ~ substantially encapsu1ated by an elastomeric material which aids in maintaining the spring clips in frictional engagement with the pins. Undesirably, the spring clips~only partially engage the pins and the pins are easily removed by the spreading of the spring 30~ clips.
Accordingly, an improved earthworking device ~ -is provided so constructed that the earthworking tip is retained on the nose of ~he adapter by a pin that is positively retained in aligned apertures in the earthworking~tip and the bore o~ the adapter.
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:' -'. , : ' . -~8~939 ~3--Preferably, the retaining pin is positively secured by a keeper means that is simple and economical in con~truction while maintainîng the pin against outward axial movement during operation of the earthworking device.
The present invention is directed to over- -coming one or more of the problems as set forth above.
Disclosure of the Inventio~
In one aspect of the present invention, a retaining pin and a keeper means adapted for use in an earthworking device having a nose and a tip telescopically mounted on the nose, the nose has a transvers~ bore and laterally converging sidewalls, and the tip defines a mating socket with laterally spaced apart converging sidewalls defininy a pair of aligned holes th~rein axially aligned with the transverse bore, and a recess defined in one of the nose and the tip in axial alignment with the 20 transverse bore and the holes, the retaining pin ~ -ha~ing an ou~er peripheral surface with an annular groove defined in the outer peri~heral surface;
: characterized in that, the keeper means includes a metallic washer and a resilient retaining ring, the washer has a frusto-conical side surface and an inside sur~ace defining a bore with an annular groove opening in the bore, the keeper means when assembled is disposed in the recess, and the pin is disposed in the aligned bore and extendæ substantially through the holes of the sidewalls to retain the tip on the nose, the pin begin slidably disposed within the bore of the : metallic washer, and the~ring has a cross-section with ~ a predetermined radial thickness and is disposed in :~ locking engagement within the groove on the pin and the groove in the washer, the depth and configuration ~,. .
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~L~83939 ~,, _ of the groovas being sufficisnt to prevent camming of the ring out of the grooves, the ring, in use, is oparative in conjunction with the grooves in the pin and the washer to prohi~it disassembly of the pin from the washer without an external force being applied to the pin suPficient to shear the ring or to fracture the washerO and one of the sideæ of the wacher being operative to cooperate with one of the lateral sidewalls of the nose or the tip to e~fectively concentrate the external force close to the interface of the grooves.
In another aspect of the present invention, an earthworking device including an adapter having a nose with forwardly converging lateral sidewalls and defining a transverse bore, an earthworking tip telescopically mounted on the nose of the adapter and having a pair o~ spaced apart forwardly converging lateral sidewalls and a pair of laterally aligned holes de~ined in the sidewalls, the bore and the holes being substantially axially aligned, a recess formed in one of the ~ose and th earthworking tip and in substantial axial alignment with the bore and the : : holes, a cylindrical pin having a groove and during : assembly being slidably disposed in ths bore and th holes for retaining the tip on the adapt~r;
characterized by, a keeper means for securing the pin in the bore being located in the rec~ss ~or abutting contact with the nose and one of the sidewalls, the kaPper means including a metallic washer and a split : 30 resilient retaining ringj the matallic washer having a ; frusto-conical side sur~ace disposed adjacent one of the pair o~ spaced apart forwardly converging lateral sidewalls of the earthworking tip or one of the ; ~ ~orwardly converging lataral sidewalls of the nose and ~ 35 an inside ~urface defining a bore and a groove opening e~ :~
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~L~8~39 -4a-into the bore, the bore of the metallic washer being axially alignabls with the bore in the nose, the resilient retaining ring having a cross-section of a predetermined radial thickness captured in one of the grooves in the pin and the washer and adapted during assembly to permit ~lidabl~ insertion of thP pin in the bore and the holes ~or locki~g engagement o~ the retaining ring with the other of the grooves, the depth and configuration of th2 groove~ being sufficient to prevent camming of the ring out of the grooves~ and the retaining ring and washer being a configuration suf~icient to prohibit disassembly of the pin without an sxternal force being applied to the pin sufficient to shear the retaining ri~g or to fracture the ~asher with eaçh of the sides of the washer constructed to effectively concentrate the force close to the interface of the grooves.
Brief Descrlption of the_prawinas Fig. 1 is an exploded isometric view of an : aarthworking device comprising an earthworking tip retained on the nose of an adapter by a retaining pin and a keeper means of the present invention;
Fig. 2 is an enlarged cross-sectional view of an assembled earthworking device;
Fig. 3 is an enlarged partial sectional view taken in the direction of:arrows III-III in Fig. 2;
Fig. 4 is an enlarged cross-sectional viPw of the resilient retaining ring located in the groove of the pin and the groove of the washer;
~:~ : Fig. 5 is an enlarged cross-sectional view of an alternate embodiment of the resilient retaining ring; and : :
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Fig. 6 is an enlarged cross-sectional view of an alternate embodiment of the subject invention.
Best Mode f _ Carrying Out the Invention Referring to Figs. 1, 2, 3, and 4 an earthworking device ~0 comprising a support member or adapter 12 having a tip 14 detachably mounted by a pin retainer assembly 7 5 on a forward end or nose 16 thereof. The pin retainer assembly 15 includes a 7 0 rylindrical pin 17 which has an outer peripheral -surface 20 and an annular groov~ 21 defined therein.
A pair of beveled surfaces 18 and 19 are provided at the intersection of the outer peripheral surface 20 with the ends of the pin 17. The nose 16, preferably of wedge shape, defines a transverse bore 22 and a pair of ~orwardly converging lateral sidewalls 24 and 26. It is noted that in some adap ers 12, the sidewalls 24 and 26 may not be forwardly converging but be substantially parallel. A recess 28 having an ~ 20 end wall 29 is formed in the lateral sidewall 24 of : th~e nose 16 and in concentric relationship with the bore 22.
A wedge-shaped socket 30 is formed in the ~ :: tip 14 to accommodate the like-shaped nose 16 of the : 25 : adapter 12. The nose preferably terminates at its apex defined by a surface 32 adapted to at least partially abut a surface 34 formed at the apex of recess 30 in the tip 14.
Tha tip 14 ha~s a pair of forwardly converging spaced sidwalls~36 and 38 and a pair of laterally aligned holes 39 and 40 defined by : peripheral surfaces 41 and~42. The sidewalls 36 and : 38 are normally designed to cQnform generally tG the sidewalls 24: and 26 of the nose 16. The holes 39 and : 40~straddle bore 22 in the nose 16 and are in , .
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substantially axlally alignment therewith.
As best shown in Figs. 2 and 3, the pin retainer assembly 15 also includes a keeper means 44 mounted in the recess 28 formed in the lateral wall 24 of the nose lS for securing the pin 17 in the bore 22 : -of nose 16. It is recognized that the recess 28 could equally be formed in lateral sidewall 26 of the nose 16 or in either of the sidewalls 36 or 38 of the tip without departing from the subject invention.
The keeper means 44 includes a washer 46 10 having an inside surface 47 defining a bore 4~ with a . .
radial annular groove 50 define~ in the washer and opening into the bore. The washer 46 is preferably made of metallic material or any oth~r suitable material. The washer 46 further has a flat inner side : 15 surface 52 adjacent the end wall 29 of the counterbore : 28 and a fru~to-conical outer side ~urface 54 adjacent the sidewall 36 of the tip 14. It should be recognized that a similar outer frusto-conical surface :--could be on the opposite side of the washer 46 without departing from the essence o~ the subject invention.
; As best shown in;Fig. 4, the groove 50 of ~ : : the washer 46 has a pair of generally parallal : ~ ~ sidewalls 56 and 58 and a bottom surf ce 60 spaced from the bore 48 defining a predetermined depth A for the groove.
The groove 21 in the pin 17 has a pair of enerally parallel sidewalls 62:and 64:and a bottom surface 66 spaced from the outer peripheral:surface 20 of the pin 17;defining a predetermined depth B for the ~groove. :~
The:keeper means 44 also includes a metallic : split resilîent:retaining ring 68. The retaining ring 68 has a cros -section:that is generally rectangular with a pair o~ generally parallel sidewalls 70 and 72 ;35 ~ defining a predetermined width~C and a pair of ::: :: : ::: : :
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~L28393~3 generally parallel inner and outer surfaces 74 and 76 defining a predetermined radial thickness D. The ring 68 is slidably capture~ in the groove 50 of the washer 46. The ring 68 may be composed of a conventional spring steel or like material which exhibits the desired resiliency, hardness and spring back capabilities required for pin retention purposes.
The pin 17 in the assembled position is slidably disposed within the bore 22 of the nose 16, the bore 48 of the washer 46 and extends substantially through the holes 39 and 40 of the sidewalls 36 and 38 of the tip 14. The ring 68 is disposed in locking engagement with the groove 21 of the pin 17 and the groove 50 in the washer 46.
Pref~rably, the depth A of groove 50 in the .. ..
: ~ washer 46~'has depth A'is equal to or greater than the predetermined radial thickness D of the ring 68~ The predeterminPd~depth B of the groove 21 in the pin 17 is generally equal to one half of the predetermined radial thickness ~ of the ring 68.
~:: : Referring now to Fig. 5, an alternate :embodiment of the presenk invent~on is illustrated and : includes a split resilient retaining ring 78 having a cross-section that is generally circular with a ;~
predetermined radial thiGkness E.
`: The ring 78 is slidably captured in the groove 50 o~ the washer 460~ A bottom surface 80 of : the ~roove 50, spaced from t~e bore 48, has a profile generally corresponding to:the ciruclar cross-section of the ring 78 and defines a depth F for the groove.
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The groove 21 in the:pin 17 has a root pro~ile 82 generally corresponding to the circular cro~s-section of the ring 78:and defines a predetermined depth G for ths grooYe.
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~2~33~39 The ring 7~ is disposed in locking engagement wlth the groove 21 of the pin 17 and the groove 50 in the washer 46.
It is recognized that the bottom sur~ace 80 of groove 50 and the profile 82 of groove 21 in pin 17 need not correspond exactly to the circular cross-secti~n of the ring 78 and may in fact be like that shown in Fig. 4.
Preferably, the depth F of groove 50 in the washer 46 is equal to or greater than the predeter-mined radial thickness E of ring 78 and the predetermined depth G o~ the grooYe 21 in the pin 17 is generally equal to one-half of the predetermined radial thickness ~ of the ring 78.
Referring now to Fig. 6, another alternate embodiment of the present invention is illustrated.
The groove 21 in the pin 17 has a depth H preferably equal to or greater than the predetermined radial thickness D of the ring 68. The ring 68 is slidably captured in the groove 21 of tha pin 17O The radial ; annular groove 50 in washer 46 pre~erably has a depth J generally equal to one-half of the radial thickness : D o~ the ring 68. A pair of beveled surfaces ~4 and 86 are provided at the intersection of the bore 48 and ~ ~25 the side surfaces 52 and 54 of the washer 46. The :~ : beveled surfaces 84 and 86 are dimensioned to provide a camming functiDn to compress ring 68 into groove 21 during asse~bly.
It is recognized that the split resilient : ring 78~having a cro~s-section that is generally :circular could be slidably captured in the groove 21.
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Industrial Applicability The earthworking device 10 of the present : : 35~ invention is particularly adaptable for positive ~ retentlon of earthworking tips or teeth detachably :~: :
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~2~33~39 . 9 mounted on support adapters and may be Pqually usef~l for the retention of tips used on trenchers or on the cutting edge of a loader bucket. Because the tips and the pins are subjected to extrems bending, twisting and vibration it is extremely difficult to providing positive pin retention while still allowing periodic replacement.
In operation, referring to Fig. 1, 2, 3, and 4, the Xeeper means 44 is initially placed in recess 28 and the tip 14 is telescopically mounted on the nose 16 of the adapter lZ. This capture keeper means 44 between the end wall 29 of the recess 28 and the sidewall 36 of the tip 24. The flat inner surface . 52 o~ the washer 46 is positioned adjacent the end wall 29 of the recess with conical outer side surface 54 adjacent the sidewall 36 of the tip. Pin 17 is : then driven manually, by a sledge hammer or the like, : through the aligned holes 39 and:40 in the tip 14, the bore 22 in the nose 16 of adapter 12 and the bore 4~
~: 20 in the washer 46 of the keeper means 44. Driving of the pin 17 through the bore 48 of the washer 46 expands the split resilient retaining ring 68 outward into the groove 50 of the washer an around the pin 17 unt~l the groove 21 in the pin 17 radially aligns with ; 25 the groove 50. At this poin~, the retaining ring 68 "springs inward" engaging the groove 21 of the pin.
This positively locks the pin 17 in place and retains : the tip 14 on the adapter 12. Depending upon the irection the pin 17 is driven:;through the bore ~8, :: : one of the beveled ~urfaces 18 or 19 provides a ;camming function to expand te ring 68 outward into ; groove 50.
: In the design of Fig. 1, 2, 3 and 4, the ring 68 has a cross-section that is generally rectanguIar with generally paralled ~idewalls 70 and .. . . . .
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~-10--72 that engage the generally parallel sidewalls 56 and 58 of the groove 50 in the washer 46 and the generally parallel sidewalls 62 and 64 of the groove 21 in the pin 17. As shown in the figures, in the assembled position, approximately one-half of the predetermined thickness D of the ring ~8 is located in the groove 21 of the pin 17 and approximately one-half is located in the groove 50 of the washer 56. It is recognized that the groove 21 in the pin 17 need only hav~ a depth B
sufficient to prevent camming of the ring 68 out of the groo~e 21. Desirably, any axial force on the end of the pin 17, during operation of the earthworking device 10, trying to dislod~e the pin 17 from the bore 48 of the captured washer 46 is resisted by the ring 68 o~erlapping the grooves 21 and 50 with the maximum section thickness C of the ring 68 being in shear.
In order to disassembly the pin 17 from the bore 22 of the nose lS for periodic replacement of the tip 14, a force must be applied on the end of the pin by a sledge hammer or the like sufficient to physically shear the ring 68 at the interface of the grooves 21 and 50 or alternateIy to cause fracture of the washer 46. It is recognized that the amount o~
force to shear the ring 46 or the fracture of the washer 46 can be changed or controlled by changing : either the cross-section of the ring or washer that is : in shear, the type of material and/or the heat treatment of the elements. In one working examplel the force necessary to cause the retaining ring 68 to 3D :shear is in the range of 143 257 XN ~32,200 - 57,700 lbs.). This being based on having a section thickness : C in shear of approximately 3.0 mm (.118 inches).
hen the pin 17 iB driven towards the sidewall 36 of the tip 14, the frusto-conical outer side surface 54 of the washer 46 cooperates with the :: :
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forwardly converging sidewall 36 in such a manner that contact of the surface 54 with wall 36 will be substantially towards the outer peripheral ~urface 20 of the pin. 'rhus there is less tendency of the washer 46 to "cock" relative to the pin 17 and concentrate more of the force to shear ring 68 close to the interface of the groove 21 and 50. It is recogni~ed that both side surfaces of the washer 46 could be ~rusto-conical whereupon the washer could not be installed backwards.
In a manner similar to the preceeding design, Fig. 5 discloses a split resilient retaining riny 78 having a generally circular cross-section with approximately one-half of the predetermined radial thickness E of the ring located in the groove 50 of he washer 46 and approximately one-half located in the groove 21 of the pin 17 to prevent camming of the ring 78 out of the grooves 21 and 50. Desirably, during operation, any axial force on the end of the pin 17 trying to dislodge the pin from the bore 48 of washer 46 is resisted by the ring 78 overlapping the grooves 21 and 50 places the maximum radial section thickness E of the ring~in shear.
To disassemble pin 17 the ring 78 must be Z5 sheared or the washer 46 must be fractured.
In the alternate embodiment of Fig. 6, the ring 68 is slidably captured in the groove 21 of the pin 17. Preferably the depth H of the groove 21 is equal to or greater than the predetermined radial thickness D of the ring 68 and the depth J of the :: :
groove 50 in the washer 46 is aqual to one-half the radial thickness D of the ring 68. In the asse~bled position, approximately one-half of the predetermined thickness D of the ring is located in the groove 21 of the pin 17 and approximately one-half is located in . ~ ~
~3393~3 the groove 50 of the washer 4~. As set forth above, it is recognized that the groove 50 in the washer 46 need only have a depth H sufficient to prevent camming of the ring 68 out oP the groove 50.
When pin 17 is driven manually through bore 48 o~ the washer ~6, the split resilient ring ~8 is compressed into groove 21 until the groove 50 in the washer 46 radially aligns with the groove 21. At this point~ the retaining ring 68 S'æprings back" engaging the groove 50 of the washer 46. Depending upon the direction, the pin 17 is driven through bore 48, one of the beveled surfaces 84 or 86 provides a camming function to compress the ring 68 into the groove 21.
From the foregoing, it will be apparent the subject invention provides a means ~or postively retaining the earthworking tip 14 on the:adapter 12.
Other aspects, objects, and advantages can be obtained from a study o~ the drawings, the ~:: disclosure and the appended claims.
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Description Positiv0 Keeper Means For Pins Of Earthworking Tips Technical Field This invention relates generally to a pin retainer assembly for securing an earthworking tip to ~n adapter on an earthworking device and more particularly to a keeper means for positiv~ly securing the pin in the apertures in the tip and the bore in the nose of the adapter.
Back~round Art Replaceable earthworking tips or teeth commonly used on rippers, loader buckets and trenchers must be positively secured in place on their support adapters and yet be capable of quick removal for ; replacement purposes. In addition to the monetary ~value of the tip that is lost, the loss of the tip will subject the adapter to damage requiring time consuming expensive repairs and/or replacement.
Loss of the tip, when used in conjunction with rock crushing equipment, causes severe damage to the equipment should it become digested or jammed therein.
Prior art retaining pins for securing an -earthworkins tip on its adapter have not been totally ~ -successful especially when used in combination with impact rippers. In such appIication, the retaining plns are subjected to extreme vibration resulting in breakage of the pins or the retaining mechanism becoming loose causing loss of the pin and the tip.
TypicalIy, retaining de~ices have been empIoyed which relies ~n friction between mating ~ sur~aces for retention. U.S. Patent 3,624,827 issued ;~ 35 ~ ~ ~
~ :
-:
,: . . . .:. ~ :
. .
., . . : : : -33~39 to Richard R. Liess et al on November 30, 1971 discloses a retaining pin having a friction ring disposed in a deep, wide, central groove of the pin.
The pin is retained in a hore defined by the adapter nose solely by friction between the ring and the bore.
Although this type o~ pin has been successful in normal ripper and bucket tip retaining applications, the central groove materially reduces the strength of the pin and subjects it to early ~ailure in extremely severe applications. In addition, the pin can vibrate out of the bore since it is not positively retained.
U.S. Patent 3,959,901 issued to Gene R.
Klett on June~l, 1976 discloses another friction type retaining device in which the pin is retained solely by frictional engagement of the retaining pin with a lock ring~ As before, vibration allows the pin to work its way loose resulting in loss of the pin and the separation of the tip from the adapter.
U.S. Patent No. 3,952j433 issued to Lloyd K. Heinold, et al on~April 27, 1976 and U.S.
Patent No. 3,990,162 issued to Lloyd K. Heinold, et al on November 9, 1976 disclose spring clips that straddle diametrially opposite sides of the retaining pin in expanded friction engagement. The clips are ~ substantially encapsu1ated by an elastomeric material which aids in maintaining the spring clips in frictional engagement with the pins. Undesirably, the spring clips~only partially engage the pins and the pins are easily removed by the spreading of the spring 30~ clips.
Accordingly, an improved earthworking device ~ -is provided so constructed that the earthworking tip is retained on the nose of ~he adapter by a pin that is positively retained in aligned apertures in the earthworking~tip and the bore o~ the adapter.
,-, . . .
. . : , :: , . .
:' -'. , : ' . -~8~939 ~3--Preferably, the retaining pin is positively secured by a keeper means that is simple and economical in con~truction while maintainîng the pin against outward axial movement during operation of the earthworking device.
The present invention is directed to over- -coming one or more of the problems as set forth above.
Disclosure of the Inventio~
In one aspect of the present invention, a retaining pin and a keeper means adapted for use in an earthworking device having a nose and a tip telescopically mounted on the nose, the nose has a transvers~ bore and laterally converging sidewalls, and the tip defines a mating socket with laterally spaced apart converging sidewalls defininy a pair of aligned holes th~rein axially aligned with the transverse bore, and a recess defined in one of the nose and the tip in axial alignment with the 20 transverse bore and the holes, the retaining pin ~ -ha~ing an ou~er peripheral surface with an annular groove defined in the outer peri~heral surface;
: characterized in that, the keeper means includes a metallic washer and a resilient retaining ring, the washer has a frusto-conical side surface and an inside sur~ace defining a bore with an annular groove opening in the bore, the keeper means when assembled is disposed in the recess, and the pin is disposed in the aligned bore and extendæ substantially through the holes of the sidewalls to retain the tip on the nose, the pin begin slidably disposed within the bore of the : metallic washer, and the~ring has a cross-section with ~ a predetermined radial thickness and is disposed in :~ locking engagement within the groove on the pin and the groove in the washer, the depth and configuration ~,. .
- . -,.' ~: ' ' ' ' ' ' ' ' '. ' ', . : - '' ' ' ,.
~: ' - - ~ . - -: ~
,:
~L~83939 ~,, _ of the groovas being sufficisnt to prevent camming of the ring out of the grooves, the ring, in use, is oparative in conjunction with the grooves in the pin and the washer to prohi~it disassembly of the pin from the washer without an external force being applied to the pin suPficient to shear the ring or to fracture the washerO and one of the sideæ of the wacher being operative to cooperate with one of the lateral sidewalls of the nose or the tip to e~fectively concentrate the external force close to the interface of the grooves.
In another aspect of the present invention, an earthworking device including an adapter having a nose with forwardly converging lateral sidewalls and defining a transverse bore, an earthworking tip telescopically mounted on the nose of the adapter and having a pair o~ spaced apart forwardly converging lateral sidewalls and a pair of laterally aligned holes de~ined in the sidewalls, the bore and the holes being substantially axially aligned, a recess formed in one of the ~ose and th earthworking tip and in substantial axial alignment with the bore and the : : holes, a cylindrical pin having a groove and during : assembly being slidably disposed in ths bore and th holes for retaining the tip on the adapt~r;
characterized by, a keeper means for securing the pin in the bore being located in the rec~ss ~or abutting contact with the nose and one of the sidewalls, the kaPper means including a metallic washer and a split : 30 resilient retaining ringj the matallic washer having a ; frusto-conical side sur~ace disposed adjacent one of the pair o~ spaced apart forwardly converging lateral sidewalls of the earthworking tip or one of the ; ~ ~orwardly converging lataral sidewalls of the nose and ~ 35 an inside ~urface defining a bore and a groove opening e~ :~
:, ., ~ .
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~L~8~39 -4a-into the bore, the bore of the metallic washer being axially alignabls with the bore in the nose, the resilient retaining ring having a cross-section of a predetermined radial thickness captured in one of the grooves in the pin and the washer and adapted during assembly to permit ~lidabl~ insertion of thP pin in the bore and the holes ~or locki~g engagement o~ the retaining ring with the other of the grooves, the depth and configuration of th2 groove~ being sufficient to prevent camming of the ring out of the grooves~ and the retaining ring and washer being a configuration suf~icient to prohibit disassembly of the pin without an sxternal force being applied to the pin sufficient to shear the retaining ri~g or to fracture the ~asher with eaçh of the sides of the washer constructed to effectively concentrate the force close to the interface of the grooves.
Brief Descrlption of the_prawinas Fig. 1 is an exploded isometric view of an : aarthworking device comprising an earthworking tip retained on the nose of an adapter by a retaining pin and a keeper means of the present invention;
Fig. 2 is an enlarged cross-sectional view of an assembled earthworking device;
Fig. 3 is an enlarged partial sectional view taken in the direction of:arrows III-III in Fig. 2;
Fig. 4 is an enlarged cross-sectional viPw of the resilient retaining ring located in the groove of the pin and the groove of the washer;
~:~ : Fig. 5 is an enlarged cross-sectional view of an alternate embodiment of the resilient retaining ring; and : :
~ : : 35 - . .
. . ~ . . . . .
.
3~3~
Fig. 6 is an enlarged cross-sectional view of an alternate embodiment of the subject invention.
Best Mode f _ Carrying Out the Invention Referring to Figs. 1, 2, 3, and 4 an earthworking device ~0 comprising a support member or adapter 12 having a tip 14 detachably mounted by a pin retainer assembly 7 5 on a forward end or nose 16 thereof. The pin retainer assembly 15 includes a 7 0 rylindrical pin 17 which has an outer peripheral -surface 20 and an annular groov~ 21 defined therein.
A pair of beveled surfaces 18 and 19 are provided at the intersection of the outer peripheral surface 20 with the ends of the pin 17. The nose 16, preferably of wedge shape, defines a transverse bore 22 and a pair of ~orwardly converging lateral sidewalls 24 and 26. It is noted that in some adap ers 12, the sidewalls 24 and 26 may not be forwardly converging but be substantially parallel. A recess 28 having an ~ 20 end wall 29 is formed in the lateral sidewall 24 of : th~e nose 16 and in concentric relationship with the bore 22.
A wedge-shaped socket 30 is formed in the ~ :: tip 14 to accommodate the like-shaped nose 16 of the : 25 : adapter 12. The nose preferably terminates at its apex defined by a surface 32 adapted to at least partially abut a surface 34 formed at the apex of recess 30 in the tip 14.
Tha tip 14 ha~s a pair of forwardly converging spaced sidwalls~36 and 38 and a pair of laterally aligned holes 39 and 40 defined by : peripheral surfaces 41 and~42. The sidewalls 36 and : 38 are normally designed to cQnform generally tG the sidewalls 24: and 26 of the nose 16. The holes 39 and : 40~straddle bore 22 in the nose 16 and are in , .
.. ~ - , :
- .
- . :
- ~2~33~3~
substantially axlally alignment therewith.
As best shown in Figs. 2 and 3, the pin retainer assembly 15 also includes a keeper means 44 mounted in the recess 28 formed in the lateral wall 24 of the nose lS for securing the pin 17 in the bore 22 : -of nose 16. It is recognized that the recess 28 could equally be formed in lateral sidewall 26 of the nose 16 or in either of the sidewalls 36 or 38 of the tip without departing from the subject invention.
The keeper means 44 includes a washer 46 10 having an inside surface 47 defining a bore 4~ with a . .
radial annular groove 50 define~ in the washer and opening into the bore. The washer 46 is preferably made of metallic material or any oth~r suitable material. The washer 46 further has a flat inner side : 15 surface 52 adjacent the end wall 29 of the counterbore : 28 and a fru~to-conical outer side ~urface 54 adjacent the sidewall 36 of the tip 14. It should be recognized that a similar outer frusto-conical surface :--could be on the opposite side of the washer 46 without departing from the essence o~ the subject invention.
; As best shown in;Fig. 4, the groove 50 of ~ : : the washer 46 has a pair of generally parallal : ~ ~ sidewalls 56 and 58 and a bottom surf ce 60 spaced from the bore 48 defining a predetermined depth A for the groove.
The groove 21 in the pin 17 has a pair of enerally parallel sidewalls 62:and 64:and a bottom surface 66 spaced from the outer peripheral:surface 20 of the pin 17;defining a predetermined depth B for the ~groove. :~
The:keeper means 44 also includes a metallic : split resilîent:retaining ring 68. The retaining ring 68 has a cros -section:that is generally rectangular with a pair o~ generally parallel sidewalls 70 and 72 ;35 ~ defining a predetermined width~C and a pair of ::: :: : ::: : :
::
: . . - . -: - . ~ : - . .
. . - ::
.
.. . .
~L28393~3 generally parallel inner and outer surfaces 74 and 76 defining a predetermined radial thickness D. The ring 68 is slidably capture~ in the groove 50 of the washer 46. The ring 68 may be composed of a conventional spring steel or like material which exhibits the desired resiliency, hardness and spring back capabilities required for pin retention purposes.
The pin 17 in the assembled position is slidably disposed within the bore 22 of the nose 16, the bore 48 of the washer 46 and extends substantially through the holes 39 and 40 of the sidewalls 36 and 38 of the tip 14. The ring 68 is disposed in locking engagement with the groove 21 of the pin 17 and the groove 50 in the washer 46.
Pref~rably, the depth A of groove 50 in the .. ..
: ~ washer 46~'has depth A'is equal to or greater than the predetermined radial thickness D of the ring 68~ The predeterminPd~depth B of the groove 21 in the pin 17 is generally equal to one half of the predetermined radial thickness ~ of the ring 68.
~:: : Referring now to Fig. 5, an alternate :embodiment of the presenk invent~on is illustrated and : includes a split resilient retaining ring 78 having a cross-section that is generally circular with a ;~
predetermined radial thiGkness E.
`: The ring 78 is slidably captured in the groove 50 o~ the washer 460~ A bottom surface 80 of : the ~roove 50, spaced from t~e bore 48, has a profile generally corresponding to:the ciruclar cross-section of the ring 78 and defines a depth F for the groove.
.
The groove 21 in the:pin 17 has a root pro~ile 82 generally corresponding to the circular cro~s-section of the ring 78:and defines a predetermined depth G for ths grooYe.
35~ ~
. ~ - - ' . .' .
. . ~ . . , -: ,: .:: . - : .
.
~: :' :' ' :' ' ' .
~2~33~39 The ring 7~ is disposed in locking engagement wlth the groove 21 of the pin 17 and the groove 50 in the washer 46.
It is recognized that the bottom sur~ace 80 of groove 50 and the profile 82 of groove 21 in pin 17 need not correspond exactly to the circular cross-secti~n of the ring 78 and may in fact be like that shown in Fig. 4.
Preferably, the depth F of groove 50 in the washer 46 is equal to or greater than the predeter-mined radial thickness E of ring 78 and the predetermined depth G o~ the grooYe 21 in the pin 17 is generally equal to one-half of the predetermined radial thickness ~ of the ring 78.
Referring now to Fig. 6, another alternate embodiment of the present invention is illustrated.
The groove 21 in the pin 17 has a depth H preferably equal to or greater than the predetermined radial thickness D of the ring 68. The ring 68 is slidably captured in the groove 21 of tha pin 17O The radial ; annular groove 50 in washer 46 pre~erably has a depth J generally equal to one-half of the radial thickness : D o~ the ring 68. A pair of beveled surfaces ~4 and 86 are provided at the intersection of the bore 48 and ~ ~25 the side surfaces 52 and 54 of the washer 46. The :~ : beveled surfaces 84 and 86 are dimensioned to provide a camming functiDn to compress ring 68 into groove 21 during asse~bly.
It is recognized that the split resilient : ring 78~having a cro~s-section that is generally :circular could be slidably captured in the groove 21.
:: :
Industrial Applicability The earthworking device 10 of the present : : 35~ invention is particularly adaptable for positive ~ retentlon of earthworking tips or teeth detachably :~: :
.
. .
.
-. ~ ~ . . -. . .
: : -: . , - -:
. .
,:,: . . : .
~2~33~39 . 9 mounted on support adapters and may be Pqually usef~l for the retention of tips used on trenchers or on the cutting edge of a loader bucket. Because the tips and the pins are subjected to extrems bending, twisting and vibration it is extremely difficult to providing positive pin retention while still allowing periodic replacement.
In operation, referring to Fig. 1, 2, 3, and 4, the Xeeper means 44 is initially placed in recess 28 and the tip 14 is telescopically mounted on the nose 16 of the adapter lZ. This capture keeper means 44 between the end wall 29 of the recess 28 and the sidewall 36 of the tip 24. The flat inner surface . 52 o~ the washer 46 is positioned adjacent the end wall 29 of the recess with conical outer side surface 54 adjacent the sidewall 36 of the tip. Pin 17 is : then driven manually, by a sledge hammer or the like, : through the aligned holes 39 and:40 in the tip 14, the bore 22 in the nose 16 of adapter 12 and the bore 4~
~: 20 in the washer 46 of the keeper means 44. Driving of the pin 17 through the bore 48 of the washer 46 expands the split resilient retaining ring 68 outward into the groove 50 of the washer an around the pin 17 unt~l the groove 21 in the pin 17 radially aligns with ; 25 the groove 50. At this poin~, the retaining ring 68 "springs inward" engaging the groove 21 of the pin.
This positively locks the pin 17 in place and retains : the tip 14 on the adapter 12. Depending upon the irection the pin 17 is driven:;through the bore ~8, :: : one of the beveled ~urfaces 18 or 19 provides a ;camming function to expand te ring 68 outward into ; groove 50.
: In the design of Fig. 1, 2, 3 and 4, the ring 68 has a cross-section that is generally rectanguIar with generally paralled ~idewalls 70 and .. . . . .
.-. . .., :
.. . . . .
.
~1 2a~3~3~
~-10--72 that engage the generally parallel sidewalls 56 and 58 of the groove 50 in the washer 46 and the generally parallel sidewalls 62 and 64 of the groove 21 in the pin 17. As shown in the figures, in the assembled position, approximately one-half of the predetermined thickness D of the ring ~8 is located in the groove 21 of the pin 17 and approximately one-half is located in the groove 50 of the washer 56. It is recognized that the groove 21 in the pin 17 need only hav~ a depth B
sufficient to prevent camming of the ring 68 out of the groo~e 21. Desirably, any axial force on the end of the pin 17, during operation of the earthworking device 10, trying to dislod~e the pin 17 from the bore 48 of the captured washer 46 is resisted by the ring 68 o~erlapping the grooves 21 and 50 with the maximum section thickness C of the ring 68 being in shear.
In order to disassembly the pin 17 from the bore 22 of the nose lS for periodic replacement of the tip 14, a force must be applied on the end of the pin by a sledge hammer or the like sufficient to physically shear the ring 68 at the interface of the grooves 21 and 50 or alternateIy to cause fracture of the washer 46. It is recognized that the amount o~
force to shear the ring 46 or the fracture of the washer 46 can be changed or controlled by changing : either the cross-section of the ring or washer that is : in shear, the type of material and/or the heat treatment of the elements. In one working examplel the force necessary to cause the retaining ring 68 to 3D :shear is in the range of 143 257 XN ~32,200 - 57,700 lbs.). This being based on having a section thickness : C in shear of approximately 3.0 mm (.118 inches).
hen the pin 17 iB driven towards the sidewall 36 of the tip 14, the frusto-conical outer side surface 54 of the washer 46 cooperates with the :: :
: :
, : . : . ~ ,: ~
~' . ' ` . ' -` : ' ' , -, ' ~' ': .` ~ ':
~L~839~
forwardly converging sidewall 36 in such a manner that contact of the surface 54 with wall 36 will be substantially towards the outer peripheral ~urface 20 of the pin. 'rhus there is less tendency of the washer 46 to "cock" relative to the pin 17 and concentrate more of the force to shear ring 68 close to the interface of the groove 21 and 50. It is recogni~ed that both side surfaces of the washer 46 could be ~rusto-conical whereupon the washer could not be installed backwards.
In a manner similar to the preceeding design, Fig. 5 discloses a split resilient retaining riny 78 having a generally circular cross-section with approximately one-half of the predetermined radial thickness E of the ring located in the groove 50 of he washer 46 and approximately one-half located in the groove 21 of the pin 17 to prevent camming of the ring 78 out of the grooves 21 and 50. Desirably, during operation, any axial force on the end of the pin 17 trying to dislodge the pin from the bore 48 of washer 46 is resisted by the ring 78 overlapping the grooves 21 and 50 places the maximum radial section thickness E of the ring~in shear.
To disassemble pin 17 the ring 78 must be Z5 sheared or the washer 46 must be fractured.
In the alternate embodiment of Fig. 6, the ring 68 is slidably captured in the groove 21 of the pin 17. Preferably the depth H of the groove 21 is equal to or greater than the predetermined radial thickness D of the ring 68 and the depth J of the :: :
groove 50 in the washer 46 is aqual to one-half the radial thickness D of the ring 68. In the asse~bled position, approximately one-half of the predetermined thickness D of the ring is located in the groove 21 of the pin 17 and approximately one-half is located in . ~ ~
~3393~3 the groove 50 of the washer 4~. As set forth above, it is recognized that the groove 50 in the washer 46 need only have a depth H sufficient to prevent camming of the ring 68 out oP the groove 50.
When pin 17 is driven manually through bore 48 o~ the washer ~6, the split resilient ring ~8 is compressed into groove 21 until the groove 50 in the washer 46 radially aligns with the groove 21. At this point~ the retaining ring 68 S'æprings back" engaging the groove 50 of the washer 46. Depending upon the direction, the pin 17 is driven through bore 48, one of the beveled surfaces 84 or 86 provides a camming function to compress the ring 68 into the groove 21.
From the foregoing, it will be apparent the subject invention provides a means ~or postively retaining the earthworking tip 14 on the:adapter 12.
Other aspects, objects, and advantages can be obtained from a study o~ the drawings, the ~:: disclosure and the appended claims.
: : ~ 20 ' :: :~ ` :
25 ~ : -30 : : -~,:: : :
:
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Claims (15)
1. A retaining pin and a keeper means adapted for use in an earthworking device having a nose and a tip telescopically mounted on the nose, the nose has a transverse bore and laterally converging sidewalls, and the tip defines a mating socket with laterally spaced apart converging sidewalls defining a pair of aligned holes therein axially aligned with the transverse bore, and a recess defined in one of the nose and the tip in axial alignment with the transverse bore and the holes, the retaining pin having an outer peripheral surface with an annular groove defined in the outer peripheral surface;
characterized in that, the keeper means includes a metallic washer and a resilient retaining ring, the washer has a frusto-conical side surface and an inside surface defining a bore with an annular groove opening in the bore, the keeper means when assembled is disposed in the recess, and the pin is disposed in the aligned bore and extends substantially through the holes of the sidewalls to retain the tip on the nose, the pin begin slidably disposed within the bore of the metallic washer, and the ring has a cross-section with a predetermined radial thickness and is disposed in locking engagement within the groove on the pin and the groove in the washer, the depth and configuration of the grooves being sufficient to prevent camming of the ring out of the grooves, the ring, in use, is operative in conjunction with the grooves in the pin and the washer to prohibit disassembly of the pin from the washer without an external force being applied to the pin sufficient to shear the ring or to fracture the washer, and one of the sides of the washer being operative to cooperate with one of the lateral sidewalls of the nose or the tip to effectively concentrate the external force close to the interface of the grooves.
characterized in that, the keeper means includes a metallic washer and a resilient retaining ring, the washer has a frusto-conical side surface and an inside surface defining a bore with an annular groove opening in the bore, the keeper means when assembled is disposed in the recess, and the pin is disposed in the aligned bore and extends substantially through the holes of the sidewalls to retain the tip on the nose, the pin begin slidably disposed within the bore of the metallic washer, and the ring has a cross-section with a predetermined radial thickness and is disposed in locking engagement within the groove on the pin and the groove in the washer, the depth and configuration of the grooves being sufficient to prevent camming of the ring out of the grooves, the ring, in use, is operative in conjunction with the grooves in the pin and the washer to prohibit disassembly of the pin from the washer without an external force being applied to the pin sufficient to shear the ring or to fracture the washer, and one of the sides of the washer being operative to cooperate with one of the lateral sidewalls of the nose or the tip to effectively concentrate the external force close to the interface of the grooves.
2. The retaining pin and the keeper means of claim 1 wherein said cross-section of the retaining ring is generally rectangular in cross-section.
3. The retaining pin and the keeper means of claim 1 wherein one of the grooves in the pin and washer has a depth equal to or greater than the predetermined radial thickness of the retaining ring.
4. The retaining pin and the keeper means of claim 3 wherein the other one of the grooves has a depth equal to one half of the predetermined radial thickness of the retaining ring.
5. The retaining pin and the keeper means of claim 4 wherein said retaining ring has a circular cross-section.
6. The retaining pin and the keeper means of claim 1 wherein the depth of the groove in the pin is generally equal to one half of the predetermined radial thickness of the retaining ring and the groove in the washer has a depth equal to or greater than the predetermined radial thickness of the retaining ring.
7. The retaining pin and the keeper means of claim 1 wherein the resilient retaining ring is split and circular.
8. An earthworking device including an adapter having a nose with forwardly converging lateral sidewalls and defining a transverse bore, an earthworking tip telescopically mounted on the nose of the adapter and having a pair of spaced apart forwardly converging lateral sidewalls and a pair of laterally aligned holes defined in the sidewalls, the bore and the holes being substantially axially aligned, a recess formed in one of the nose and the earthworking tip and in substantial axial alignment with the bore and the holes, a cylindrical pin having a groove and during assembly being slidably disposed in the bore and the holes for retaining the tip on the adapter; characterized by, a keeper means for securing the pin in the bore being located in the recess for abutting contact with the nose and one of the sidewalls, the keeper means including a metallic washer and a split resilient retaining ring, the metallic washer having a frusto-conical side surface disposed adjacent one of the pair of spaced apart forwardly converging lateral sidewalls of the earthworking tip or one of the forwardly converging lateral sidewalls of the nose and an inside surface defining a bore and a groove opening into the bore, the bore of the metallic washer being axially alignable with the bore in the nose, the resilient retaining ring having a cross-section of a predetermined radial thickness captured in one of the grooves in the pin and the washer and adapted during assembly to permit slidable insertion of the pin in the bore and the holes for locking engagement of the retaining ring with the other of the grooves, the depth and configuration of the grooves being sufficient to prevent camming of the ring out of the grooves, and the retaining ring and washer being a configuration sufficient to prohibit disassembly of the pin without an external force being applied to the pin sufficient to shear the retaining ring or to fracture the washer with each of the sides of the washer constructed to effectively concentrate the force close to the interface of the grooves.
9 . The earthworking device of claim 8 wherein the retaining ring has a rectangular cross-section.
10. The earthworking device of claim 8 wherein the groove in the washer has a pair of parallel sidewalls, the groove of the pin has a pair of parallel sidewalls and the retaining ring has a pair of parallel sidewalls in engagement with the pair of sidewalls of the groove in the pin and the groove in the washer.
11. The earthworking device of claim 8 wherein one of the grooves in the pin and washer has a depth equal to or greater than the predetermined radial thickness of the retaining ring.
12. The earthworking device of claim 11 wherein the depth of the groove in the pin is generally equal to one half of the predetermined radial thickness of the retaining ring and the groove in the washer has a depth equal to or greater than the predetermined radial thickness of the retaining ring.
13. The earthworking device of claim 8 wherein the recess is formed in the nose.
-16a-
-16a-
14. The earthworking device of claim 11 wherein the other one of the groove ha a depth generally equal to one half of the predetermined radial thickness of the retaining ring.
15. The earthworking device of claim 14 wherein the retaining ring has a circular cross-section.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US451587A | 1987-01-20 | 1987-01-20 | |
| US451687A | 1987-01-20 | 1987-01-20 | |
| US004,515 | 1987-01-20 | ||
| US004,516 | 1987-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1283939C true CA1283939C (en) | 1991-05-07 |
Family
ID=26673108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000555963A Expired - Fee Related CA1283939C (en) | 1987-01-20 | 1988-01-06 | Positive keeper means for pins of earthworking tips |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0343191B1 (en) |
| JP (1) | JP2614910B2 (en) |
| AU (1) | AU605268B2 (en) |
| CA (1) | CA1283939C (en) |
| DE (1) | DE3786929T2 (en) |
| ES (1) | ES2006269A6 (en) |
| WO (1) | WO1988005483A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU694806B2 (en) * | 1993-12-23 | 1998-07-30 | Australian Soil Care Systems Pty. Ltd. | Overload protection mechanism |
| JP4771623B2 (en) * | 2001-07-17 | 2011-09-14 | 株式会社小松製作所 | Tooth fixing structure for bucket for excavation |
| US9062436B2 (en) | 2011-10-07 | 2015-06-23 | Caterpillar Inc. | Implement tooth assembly with tip and adapter |
| US8943717B2 (en) | 2011-10-08 | 2015-02-03 | Caterpillar Inc. | Implement tooth assembly with tip and adapter |
| US9057177B2 (en) | 2011-10-08 | 2015-06-16 | Caterpillar Inc. | Implement tooth assembly with tip and adapter |
| US8943716B2 (en) | 2011-10-10 | 2015-02-03 | Caterpillar Inc. | Implement tooth assembly with tip and adapter |
| ITTO20130740A1 (en) * | 2013-09-12 | 2015-03-13 | Rialca Due Di Chiolerio Paolo Giova Nni | DEVICE FOR FIXING TOOLS TO MACHINES BY PINS |
| US9670648B2 (en) | 2015-08-10 | 2017-06-06 | Caterpillar Inc. | Replaceable tip systems for a tine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3856359A (en) * | 1971-09-20 | 1974-12-24 | Cincinnati Mine Machinery Co | Anti-coring device for use with bit mounting means on mining, earth working and digging machines |
| BR7502137A (en) * | 1974-08-05 | 1976-08-03 | Caterpillar Tractor Co | PENETRATION DEVICE ON THE LAND AND MEANS OF RETENTION |
| US4096653A (en) * | 1974-10-31 | 1978-06-27 | Caterpillar Tractor Co. | Cartridge retaining means for earthworking tips |
| FR2390618B1 (en) * | 1977-05-12 | 1985-11-29 | Lamouric Pol | DEVICE FOR ROTATING A TOOL IN A TOOL HOLDER |
-
1987
- 1987-11-30 AU AU13964/88A patent/AU605268B2/en not_active Ceased
- 1987-11-30 EP EP19880902349 patent/EP0343191B1/en not_active Expired - Lifetime
- 1987-11-30 JP JP63502360A patent/JP2614910B2/en not_active Expired - Lifetime
- 1987-11-30 WO PCT/US1987/003157 patent/WO1988005483A1/en active IP Right Grant
- 1987-11-30 DE DE19873786929 patent/DE3786929T2/en not_active Expired - Fee Related
-
1988
- 1988-01-06 CA CA000555963A patent/CA1283939C/en not_active Expired - Fee Related
- 1988-01-19 ES ES8800113A patent/ES2006269A6/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| WO1988005483A1 (en) | 1988-07-28 |
| DE3786929D1 (en) | 1993-09-09 |
| DE3786929T2 (en) | 1994-03-10 |
| AU605268B2 (en) | 1991-01-10 |
| JP2614910B2 (en) | 1997-05-28 |
| EP0343191A1 (en) | 1989-11-29 |
| AU1396488A (en) | 1988-08-10 |
| ES2006269A6 (en) | 1989-04-16 |
| JPH02502033A (en) | 1990-07-05 |
| EP0343191B1 (en) | 1993-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |