US20050188568A1 - Grappling arm assembly with latching means - Google Patents
Grappling arm assembly with latching means Download PDFInfo
- Publication number
- US20050188568A1 US20050188568A1 US10/786,295 US78629504A US2005188568A1 US 20050188568 A1 US20050188568 A1 US 20050188568A1 US 78629504 A US78629504 A US 78629504A US 2005188568 A1 US2005188568 A1 US 2005188568A1
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- Prior art keywords
- arm member
- dipper stick
- inoperative position
- implement
- assembly according
- 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.)
- Abandoned
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- 239000012530 fluid Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
- E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
Definitions
- This invention relates to an assembly mountable on a machine for grappling various objects such as tree trunks, branches, rocks and the like.
- an arm member commonly referred to as a “thumb,” which is mounted on the underside of the dipper stick of the machine and cooperable with the bucket to grapple objects.
- Such arm members are either permanently positioned on the underside of the dipper stick in an extended, operative position or displaceable between an operative position cooperative with the bucket or an inoperative position disposed adjacent and detachably secured to the underside of the dipper stick.
- an assembly mountable on the dipper stick of a machine having an implement pivotally connected to the dipper stick and means operatively interconnecting the dipper stick and the implement for pivoting the implement relative to the dipper stick, generally consisting of an arm member mountable on the underside of the stick for pivotal movement relative to the dipper stick, means for pivoting the arm member between a retracted, inoperable position and an extended, operative position cooperable with the implement when the implement is pivoted relative to the dipper stick toward the implement to grapple objects between the implement and the arm member, and means for detachably latching the arm member in the inoperative position.
- the pivoting means for the arm member comprises a fluid actuated cylinder assembly which is adapted to be received within the envelope of the arm member when the arm member is in the inoperative position
- the latching means includes a bracket mounted on the underside of the dipper stick having a pair of outwardly, yieldably biased protuberances, and surfaces on the arm member provided with recesses registrable with such protuberances when the arm member is in the inoperative position, whereby the protrusions snap-fit into the recesses to displaceably retain the arm member in the inoperative position.
- FIG. 5 is a cross-sectional view taken along line 5 - 5 in FIG. 3 ;
- FIG. 6 is a cross-sectional view taken along line 6 - 6 in FIG. 4 ;
- FIGS. 1 and 2 of the drawings there is illustrated the front end assembly 10 of an excavating machine, equipped with an arm assembly 11 , embodying the present invention.
- the front end assembly includes a dipper stick 12 pivotally connected to the upper end of a boom 13 of the machine by means of a pivot pin 14 , a bucket 15 pivotally connected to the free of the dipper stick by means of a pin 16 and an actuating assembly 17 .
- Arm assembly 11 includes an arm member 30 , a fluid actuated cylinder 31 and a latching mechanism 32 .
- the arm member consists of a pair of transversely spaced, elongated plate members 33 and 34 joined together adjacent one set of ends by means of a cross plate member 35 and at another end thereof by a cross plate member 36 , and pivotally connected at the first mention end thereof to a bracket 37 mounted on the underside of the dipper stick adjacent the free end thereof, by means of a pivot pin 38 .
- Cross plate member 36 is adapted to engage the cutting edge 39 of bucket 15 when the bucket is curled to the position as shown in FIG. 1 and arm member 30 is in its extended, operative position also as shown in FIG. 1 .
- Plate members 33 and 34 also are provided with jagged edge configurations adjacent the free ends thereof for positively engaging an object gripped between the arm member and the bucket during a grappling operation.
- Actuating assembly 31 includes a cylinder member 40 pivotally connected at the base end thereof to a bracket 41 mounted on the underside of the dipper stick by means of a pin 42 , and a rod member 43 connected to a set of brackets 44 mounted on crosspiece member 35 , between plate members 33 and 34 , by means of a connecting pin 45 .
- arm member 30 may be extended to its operable position as shown in FIG. 1 to cooperate with bucket 15 in the curled position to grip objects therebetween, and retracted to its inoperative position along the underside of the dipper stick as shown in FIG. 2 , to permit the bucket to be curled and uncurled in performing excavating operations.
- cylinder assembly 31 When the arm member is in its inoperative position along the underside of the dipper stick, cylinder assembly 31 will be disposed within the envelope of the arm member, between plate members 33 and 34 to not only remove the cylinder assembly from the path of the bucket but at least partially shield it from objects that could be struck and cause damage thereto.
- Latching mechanism 32 is illustrated in detail in FIGS. 3 through 8 . It includes a first component 50 mounted on the underside of the dipper stick and a second, cooperating component mounted on the free end of the arm member.
- Latch component 50 includes a pair of brackets 52 and 53 mounted on the underside of the dipper stick rearwardly of bracket 41 and a transversely disposed latching element 54 supported on such brackets.
- each end of latching element 54 is provided with a recess 55 having an annular wall in which there is housed a coil spring 56 .
- Each spring seats on a bottom circular wall of a recess and engages a button 57 at the opposite end thereof to yieldingly bias the button outwardly as shown in FIG. 7 .
- Each button includes an annular flange portion 57 a and a convex or round portion 57 b.
- Spring 55 bears against the element 57 a and urges the convex portion through an opening in an annular element 58 rigidly mounted on an end portion of latching element 54 .
- convex portion 57 b of each button projects beyond the outer surface of retainer element 58 and is restrained by engagement of the annular flange portion 57 a engaging the inner surface of retainer element 58 .
- buttons 60 and 61 engage and cam the convex portions of buttons 57 , causing such buttons to displace inwardly against the biasing action of the springs and thus permit such buttons to register with the openings in elements 60 and 61 to further permit the buttons to displace outwardly under the biasing action of the springs and thus cause the arm member to snap-fit onto latching element 50 in the retracted, inoperative position.
- cylinder assembly 31 is simply operated to angularly displace the arm member and correspondingly cause annular elements 60 and 61 to cam buttons 57 inwardly against the biasing action of the spring to release the arm member from its retracted, inoperative position.
- the arm member Under normal excavating operations, the arm member will be retained in the retracted, inoperative position along the underside of the dipper stick as shown in FIG. 2 with the latching components engaged as shown in FIG. 6 . Under such conditions, the boom, dipper stick and bucket may be operated in the conventional manner to provide an excavating operation. With the arm member positioned along the underside of the dipper stick and cylinder assembly 31 nested within the envelope of the arm member, the bucket is free to curl and uncurl as it travels through its excavating cycle, and cylinder assembly 31 is protected from striking any object and thus becoming damaged.
- the cylinder assembly 31 When it is desired to temporarily interrupt the excavating operation to remove an object such as a tree trunk, branches or a large rock, the cylinder assembly 31 is operated to move the arm member from the retracted, inoperative position shown in FIG. 2 to the extended, operative position shown in FIG. 1 .
- the cylinder assembly for the bucket may then be operated to curl the bucket and thus grapple the object sought to be removed.
- cylinder assembly 31 As cylinder assembly 31 is operated to angularly displace the arm member, such action will cause annular elements 60 and 61 to cam buttons 57 inwardly against the biasing action of their associated springs to free the arm member and permit it to be displaced to its operative position for grappling an item to be removed.
- the operator need only operate cylinder assembly 31 to retract the arm member and permit it to be relatched against the underside of the dipper stick.
- elements 60 and 61 will again trip buttons 57 to register the openings therein with the buttons which once more will be urged outwardly into such openings to again retain the arm member in its retracted, inoperative position.
- cylinder assembly 31 will be received within the arm member to again protect it from striking any object and becoming damaged.
- the arm assembly of the present invention may be displaced between inoperative and operative positions easily and quickly without having to interrupt the operation of the machine and manually or otherwise manipulate such assembly, the productivity of the machine is not materially adversely affected. Furthermore, the simplicity of the construction and operation of the latching mechanism minimizes the cost of manufacturing, assembling and operating the assembly.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
Abstract
An assembly mountable on a dipper stick of a machine having an implement pivotally connected to the dipper stick and means operatively interconnecting the dipper stick and implement for pivoting the implement relative to the dipper stick, generally consisting of an arm member mountable on an underside of the dipper stick for pivotal movement relative to the dipper stick, means for pivoting the arm member between and inoperative position and an operative position cooperable with the implement when the implement is pivoted relative to the dipper stick toward the arm member to grapple objects between the implement and the arm member, and means for detachably latching the arm member in the inoperative position including a first member mountable on one of the dipper sticks and the arm member having at least one recess and a second member mountable on the other of the dipper stick and the arm member having a yieldably biased protuberance receivable in the recess when the arm member is in the inoperative position.
Description
- This invention relates to an assembly mountable on a machine for grappling various objects such as tree trunks, branches, rocks and the like.
- In the use of excavating machines typically equipped with a bucket which may be curled and uncurled to perform excavating operations, it often is desirable to grapple and move various articles such as tree trunks, branches, large rocks and the like without materially interrupting the excavating operation. For this purpose, there has been developed and widely used in the construction, mining, land clearing and other industries, an arm member, commonly referred to as a “thumb,” which is mounted on the underside of the dipper stick of the machine and cooperable with the bucket to grapple objects. Such arm members are either permanently positioned on the underside of the dipper stick in an extended, operative position or displaceable between an operative position cooperative with the bucket or an inoperative position disposed adjacent and detachably secured to the underside of the dipper stick.
- In the use of the type of arm member which is displaceable between operative and inoperative positions, it has been found that the construction and displacement of such arm members in the prior art requires an undo interruption of the excavating operation of the machine which results in a diminution of productivity. Accordingly, it is the principal object of this invention to provide an arm member mountable on the underside of the dipper stick of a machine which may be easily and quickly displaced between an extended, operative position cooperable with the bucket of the machine for grappling objects, and a retracted, inoperable position along the underside of the dipper stick, so as not to unduly interrupt the excavating operation of the machine.
- The objects of the present invention are achieved by providing an assembly mountable on the dipper stick of a machine having an implement pivotally connected to the dipper stick and means operatively interconnecting the dipper stick and the implement for pivoting the implement relative to the dipper stick, generally consisting of an arm member mountable on the underside of the stick for pivotal movement relative to the dipper stick, means for pivoting the arm member between a retracted, inoperable position and an extended, operative position cooperable with the implement when the implement is pivoted relative to the dipper stick toward the implement to grapple objects between the implement and the arm member, and means for detachably latching the arm member in the inoperative position. Such latching means includes a first member mountable on one of the dipper stick and the arm member having at least one recess and a second member mountable on the other of the dipper stick and the arm member having a yieldably biased protuberance receivable in the recess when the arm member is in the inoperative position. Preferably, the pivoting means for the arm member comprises a fluid actuated cylinder assembly which is adapted to be received within the envelope of the arm member when the arm member is in the inoperative position, and the latching means includes a bracket mounted on the underside of the dipper stick having a pair of outwardly, yieldably biased protuberances, and surfaces on the arm member provided with recesses registrable with such protuberances when the arm member is in the inoperative position, whereby the protrusions snap-fit into the recesses to displaceably retain the arm member in the inoperative position.
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FIG. 1 is a side elevational view of the front end assembly of an excavating machine, embodying the present invention, illustrating an arm member thereof in an extended operative position; -
FIG. 2 is a view similar to the view shown inFIG. 1 , illustrating the arm member thereof in a retracted, inoperative position; -
FIG. 3 is an enlarged, fragmentary view of the arm member shown inFIGS. 1 and 2 , shown approaching the retracted, inoperative position and illustrating the latching means therefor; -
FIG. 4 is an enlarged view of that portion ofFIG. 2 designated by thereference numeral 2; -
FIG. 5 is a cross-sectional view taken along line 5-5 inFIG. 3 ; -
FIG. 6 is a cross-sectional view taken along line 6-6 inFIG. 4 ; -
FIG. 7 is an enlarged, cross-sectional view taken along line 7-7 inFIG. 3 ; and -
FIG. 8 is a partial view of the view shown inFIG. 6 illustrating the retaining component of the latching mechanism in a depressed condition. - Referring to
FIGS. 1 and 2 of the drawings, there is illustrated thefront end assembly 10 of an excavating machine, equipped with an arm assembly 11, embodying the present invention. The front end assembly includes adipper stick 12 pivotally connected to the upper end of aboom 13 of the machine by means of apivot pin 14, abucket 15 pivotally connected to the free of the dipper stick by means of apin 16 and anactuating assembly 17. The actuating assembly includes a pair ofsupport links links links 18 by means of apin 21, and pivotally connected at the other set of ends thereof to brackets mounted onbucket 15 by means of a set ofpins cylinder member 23 pivotally connected to a pair ofbrackets pin 25 and a rod member 26 pivotally connected topin 21. It will be appreciated that upon extension and retraction of rod member 26,bucket 50 will be caused to curl and uncurl in the conventional manner to operate the machine in a conventional excavating operation. - Arm assembly 11 includes an
arm member 30, a fluid actuatedcylinder 31 and alatching mechanism 32. The arm member consists of a pair of transversely spaced,elongated plate members cross plate member 35 and at another end thereof by across plate member 36, and pivotally connected at the first mention end thereof to abracket 37 mounted on the underside of the dipper stick adjacent the free end thereof, by means of apivot pin 38.Cross plate member 36 is adapted to engage thecutting edge 39 ofbucket 15 when the bucket is curled to the position as shown inFIG. 1 andarm member 30 is in its extended, operative position also as shown inFIG. 1 .Plate members - Actuating
assembly 31 includes acylinder member 40 pivotally connected at the base end thereof to abracket 41 mounted on the underside of the dipper stick by means of apin 42, and a rod member 43 connected to a set ofbrackets 44 mounted oncrosspiece member 35, betweenplate members pin 45. Upon extension and retraction of rod member 43 in the conventional manner,arm member 30 may be extended to its operable position as shown inFIG. 1 to cooperate withbucket 15 in the curled position to grip objects therebetween, and retracted to its inoperative position along the underside of the dipper stick as shown inFIG. 2 , to permit the bucket to be curled and uncurled in performing excavating operations. When the arm member is in its inoperative position along the underside of the dipper stick,cylinder assembly 31 will be disposed within the envelope of the arm member, betweenplate members -
Latching mechanism 32 is illustrated in detail inFIGS. 3 through 8 . It includes afirst component 50 mounted on the underside of the dipper stick and a second, cooperating component mounted on the free end of the arm member.Latch component 50 includes a pair ofbrackets bracket 41 and a transversely disposedlatching element 54 supported on such brackets. As best illustrated inFIG. 7 each end oflatching element 54 is provided with arecess 55 having an annular wall in which there is housed acoil spring 56. Each spring seats on a bottom circular wall of a recess and engages abutton 57 at the opposite end thereof to yieldingly bias the button outwardly as shown inFIG. 7 . Each button includes anannular flange portion 57 a and a convex or round portion 57 b.Spring 55 bears against theelement 57 a and urges the convex portion through an opening in anannular element 58 rigidly mounted on an end portion oflatching element 54. In the fully extended position under the biasing action ofspring 57 a, convex portion 57 b of each button projects beyond the outer surface ofretainer element 58 and is restrained by engagement of theannular flange portion 57 a engaging the inner surface ofretainer element 58. - Referring to
FIGS. 5 and 6 , a pair of opposedannular elements plate members pin 38, intersecting theconvex portions 57 oflatch elements 57. As the arm member is angularly displaced from the extended, operative position as shown inFIG. 1 to the retracted, inoperative position shown inFIG. 2 ,elements buttons 57, causing such buttons to displace inwardly against the biasing action of the springs and thus permit such buttons to register with the openings inelements latching element 50 in the retracted, inoperative position. When it is desired to extend the arm member,cylinder assembly 31 is simply operated to angularly displace the arm member and correspondingly causeannular elements cam buttons 57 inwardly against the biasing action of the spring to release the arm member from its retracted, inoperative position. - Under normal excavating operations, the arm member will be retained in the retracted, inoperative position along the underside of the dipper stick as shown in
FIG. 2 with the latching components engaged as shown inFIG. 6 . Under such conditions, the boom, dipper stick and bucket may be operated in the conventional manner to provide an excavating operation. With the arm member positioned along the underside of the dipper stick andcylinder assembly 31 nested within the envelope of the arm member, the bucket is free to curl and uncurl as it travels through its excavating cycle, andcylinder assembly 31 is protected from striking any object and thus becoming damaged. When it is desired to temporarily interrupt the excavating operation to remove an object such as a tree trunk, branches or a large rock, thecylinder assembly 31 is operated to move the arm member from the retracted, inoperative position shown inFIG. 2 to the extended, operative position shown inFIG. 1 . The cylinder assembly for the bucket may then be operated to curl the bucket and thus grapple the object sought to be removed. Ascylinder assembly 31 is operated to angularly displace the arm member, such action will causeannular elements cam buttons 57 inwardly against the biasing action of their associated springs to free the arm member and permit it to be displaced to its operative position for grappling an item to be removed. After the particular object has been removed and it is desired to resume the excavating operation, the operator need only operatecylinder assembly 31 to retract the arm member and permit it to be relatched against the underside of the dipper stick. As the arm member is thus angularly displaced toward the underside of the dipper stick,elements trip buttons 57 to register the openings therein with the buttons which once more will be urged outwardly into such openings to again retain the arm member in its retracted, inoperative position. As the arm member is thus retracted,cylinder assembly 31 will be received within the arm member to again protect it from striking any object and becoming damaged. - Because the arm assembly of the present invention may be displaced between inoperative and operative positions easily and quickly without having to interrupt the operation of the machine and manually or otherwise manipulate such assembly, the productivity of the machine is not materially adversely affected. Furthermore, the simplicity of the construction and operation of the latching mechanism minimizes the cost of manufacturing, assembling and operating the assembly.
- From the foregoing detained description it will be evident that there are a number of changes, adaptations, and modifications of the present invention which come within the province of those persons having ordinary skill in the art to which the aforementioned invention pertains. However, it is intended that all such variations not departing from the spirit of the invention be considered as within the scope thereof as limited solely by the appended claims.
Claims (16)
1. A grappling assembly for a machine having a boom, comprising:
a dipper stick pivotally connectable to said boom;
an implement pivotally connected to said dipper stick;
means operatively interconnecting said dipper stick and said implement for pivoting said implement relative to said dipper stick;
an arm member connected to an underside of said dipper stick, pivotal between an operative position cooperable with said implement for grappling objects between said arm member and said implement when said implement is pivoted toward said arm member, and an inoperative position;
means operatively interconnecting said dipper stick and said arm member for pivoting said arm member between said operative and inoperative positions; and
means for detachably latching said arm member in said operative position including one of said dipper stick and said arm member having at least one transversely extending recess and the other of said dipper stick and said arm member having a yieldably biased, transversely displaceable protuberance receivable in said recess when said arm member is in said inoperative position.
2. An assembly according to claim 1 wherein said means for pivoting said arm member is receivable within said arm member when said arm member is in said inoperative position.
3. An assembly according to claim 1 wherein said means for pivoting said arm member comprises a fluid actuated cylinder assembly.
4. An assembly according to claim 1 wherein said protuberance comprises a button having a curved outer surface receivable in said recess, and wherein said button is yieldingly biased in a projecting direction by a spring seated in said one of said dipper stick and said arm member.
5. An assembly according to claim 1 wherein said latching means includes a bracket mounted on the underside of said dipper stick having a pair of outwardly, yieldingly biased protuberances, and surfaces on said arm member provided with recesses registrable with said protuberances when said arm member is in said inoperative position, whereby said protuberances snap-fit into said recesses to displaceably retain said arm member in said inoperative position.
6. An assembly according to claim 1 wherein the biasing force exerted on said protuberance is sufficient to yieldingly bias said protuberance in said recess registered therewith yet insufficient to retain said protuberance therein upon operation of said means for pivoting said arm member from said inoperative position to said operative position.
7. An assembly according to claim 1 wherein said arm member is provided with a jagged surface engageable with an object being grappled.
8. An assembly mountable on a dipper stick of a machine having an implement pivotally connected to said dipper stick and means operatively interconnecting said dipper stick and said implement for pivoting said implement relative to said dipper stick, comprising:
an arm member mountable on an underside of said dipper stick for pivotal movement relative to said dipper stick;
means for pivoting said arm member between an inoperative position and an operative position cooperable with said implement when said implement is pivoted relative to said dipper stick toward said arm member to grapple objects between said implement and said arm member; and
means for detachably latching said arm member in said inoperative position including a first member mountable on one of said dipper stick and said arm member having at least one transversely extending recess and a second member mountable on the other of said dipper stick and said arm member having a yieldably biased, transversely displaceable protuberance receivable in said recess when said arm member is in said inoperative position.
9. An assembly according to claim 8 wherein said means for pivoting said arm member is receivable within said arm member when said arm member is in said inoperative position.
10. An assembly according to claim 8 wherein said means for pivoting said arm member comprises a fluid actuated cylinder assembly.
11. An assembly according to claim 8 wherein said protuberance comprises a button having a curved outer surface receivable in said recess, and wherein said button is biased in a projecting direction by a spring seated in said one of said dipper stick and said arm member.
12. An assembly according to claim 8 wherein said latching means includes a bracket mountable on the underside of said dipper stick having a pair of outwardly, yieldably biased protuberances, and surfaces on said arm member provided with recesses registrable with said protuberances when said arm member is in said inoperative position, whereby said protuberances snap-fit into said recesses to displaceably retain said arm member in said inoperative position.
13. An assembly according to claim 8 wherein the biasing force exerted on said protuberance is sufficient to yieldingly bias said protuberance into said recess registered therewith yet insufficient to retain said protuberance therein upon operation of said means for pivoting said arm member from said inoperative position to said operative position.
14. An assembly according to claim 8 wherein said arm member includes a pair of elongated, transversely spaced, plate members, and wherein said means for pivoting said arm member between an inoperative position and an operative position is received between said plate members when said arm member is in said inoperative position.
15. An assembly according to claim 14 wherein said plate members are provided with jagged surfaces engageable with an object being gripped when said arm member is in said operable position.
16. An assembly according to claim 1 wherein said member having said recess includes an element disposed in a plane perpendicular to the pivotal axis of said arm member and including said protuberance biased in an extended position, engageable with said protuberance in camming relation to cause said protuberance to displace and then be inserted into said recess when said arm member is angularly displaced to said inoperative position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/786,295 US20050188568A1 (en) | 2004-02-26 | 2004-02-26 | Grappling arm assembly with latching means |
Applications Claiming Priority (1)
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US10/786,295 US20050188568A1 (en) | 2004-02-26 | 2004-02-26 | Grappling arm assembly with latching means |
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US20050188568A1 true US20050188568A1 (en) | 2005-09-01 |
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US10/786,295 Abandoned US20050188568A1 (en) | 2004-02-26 | 2004-02-26 | Grappling arm assembly with latching means |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US20070243054A1 (en) * | 2006-04-13 | 2007-10-18 | Seljestad Gregory A | Latch |
US8061957B1 (en) | 2006-04-10 | 2011-11-22 | Callens Albert C | Grappling fork attachment system |
US20140230291A1 (en) * | 2013-02-20 | 2014-08-21 | Caterpillar Inc. | Augmented Hydraulic Thumb Kinematic Member Length |
US8834090B1 (en) | 2009-02-05 | 2014-09-16 | Albert C. Callens | Grappling fork attachment system |
US9353500B1 (en) * | 2012-10-26 | 2016-05-31 | Cold Stone Shorelines And Retaining Walls, Inc. | Excavator thumb having hardened removable teeth defining a platform beyond a wear and tear surface of thumb |
US20180171577A1 (en) * | 2016-05-26 | 2018-06-21 | Bertha Manufacturing, LLC | Debris gripper and extractor for hydraulic equipment |
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US6203267B1 (en) * | 1999-08-03 | 2001-03-20 | Rockland Inc. | Material handling assembly for machines and thumb assembly thereof |
US6209237B1 (en) * | 1999-08-04 | 2001-04-03 | Rockland Inc. | Material handling assembly for excavating machines and the like having improved component storage means |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8061957B1 (en) | 2006-04-10 | 2011-11-22 | Callens Albert C | Grappling fork attachment system |
US20070243054A1 (en) * | 2006-04-13 | 2007-10-18 | Seljestad Gregory A | Latch |
US7753641B2 (en) * | 2006-04-13 | 2010-07-13 | Caterpillar Inc | Latch |
US8834090B1 (en) | 2009-02-05 | 2014-09-16 | Albert C. Callens | Grappling fork attachment system |
US9353500B1 (en) * | 2012-10-26 | 2016-05-31 | Cold Stone Shorelines And Retaining Walls, Inc. | Excavator thumb having hardened removable teeth defining a platform beyond a wear and tear surface of thumb |
US20140230291A1 (en) * | 2013-02-20 | 2014-08-21 | Caterpillar Inc. | Augmented Hydraulic Thumb Kinematic Member Length |
US9194099B2 (en) * | 2013-02-20 | 2015-11-24 | Caterpillar Inc. | Augmented hydraulic thumb kinematic member length |
US20180171577A1 (en) * | 2016-05-26 | 2018-06-21 | Bertha Manufacturing, LLC | Debris gripper and extractor for hydraulic equipment |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ROCKLAND, INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CLAPPER JR., JOHN W.;REEL/FRAME:015025/0728 Effective date: 20040206 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |