Scoop Or Bucket Structure, Per Se Patents (Class 37/444)
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Patent number: 6154989Abstract: A bracket and frame assembly permits attaching and removing a bucket or other tool to and from an arm of an excavator, backhoe, or the like. The bracket and frame assembly comprises two portions, a bracket and a detachable frame. The bracket mounts onto the arm of the implement. The bracket carries a latch member. The bracket can be moved onto a frame on a bucket or other tool, and is latched in place without dismounting from the backhoe, excavator or the like. The latch member can be released, either manually or under power, and then by manipulating the arm, the tool and frame can be removed from the bracket and a new tool mounted. The engaging portions of the frame and bracket are such that as wear occurs, the parts will compensate and remain secured without play or slop.Type: GrantFiled: September 21, 1999Date of Patent: December 5, 2000Assignee: Clark Equipment CompanyInventors: Wally L. Kaczmarski, Thomas M. Sagaser, Craig A. Berard, Henry J. Weber, Jason J. Asche
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Patent number: 6128838Abstract: A heated bucket system for significantly reducing the accumulation of frozen mud and ice within a bucket thereby maintaining the bucket's dirt moving capacity. The inventive device includes a bucket attachable to an arm of a backhoe or other machinery, a pump attached to the coolant system of the backhoe, an inflow tube fluidly connected to the pump, a heat tube attached to the back member of the bucket preferably in a sinusoidal pattern and fluidly connected to the inflow tube, and an outflow tube fluidly connected to the heat tube opposite of the inflow tube and fluidly connected to the coolant system of the backhoe. In operation, the pump draws the heated coolant within the coolant system and pumps it through the heat tube attached to the bucket. The heat from within the coolant is exchanged with the bucket thereby maintaining the temperature of the bucket above freezing. The coolant is then returned to the coolant system through an outflow tube.Type: GrantFiled: June 16, 1999Date of Patent: October 10, 2000Inventor: Gary W. Morlock
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Patent number: 6092606Abstract: A stone gathering apparatus adaptable for use with a front end loader or the like, useful for picking or gathering stones, rocks, and the like, from the ground surface, comprises (a) a receptacle having a generally horizontally disposed bottom or flooring, (b) spaced, vertical end walls, (c) a forwardly inclined back wall extending between the end walls and connected thereto, (d) a vertically disposed retaining bar extending between the end walls and connected thereto and disposed forward of the back wall and spaced therefrom, and (e) a plurality of horizontally disposed, spaced, parallel tines extending outwardly or forwardly from the retaining bar and adaptable for engaging the ground. The rear surface of the back wall is equipped with a suitable mount for attaching the apparatus to a front end loader.Type: GrantFiled: February 19, 1998Date of Patent: July 25, 2000Inventor: Jeffrey L. Basler
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Patent number: 6067733Abstract: A ditch trenching device is adapted to be connected to earth moving equipment that use buckets. A dirt port is dimensioned in a lower portion of a bucket. A trencher is attached to the dirt port and is defined by two side members each with a front, back, top, and floor that are spaced apart the width of the dirt port; a floor member with a distal end is attached to the floors; and a back member is attached to the backs. There is an acute angle between the front and floor. A first cutting edge is placed at the distal end and a second cutting edge is connected to the front by the floor.Type: GrantFiled: April 13, 1998Date of Patent: May 30, 2000Inventor: Walter Gasper
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Patent number: 6052926Abstract: A bucket for a material handling apparatus which includes a bottom wall, a top wall and a pair of parallel side walls which connect the top wall to the bottom wall. The walls of the bucket define a housing having a chamber, a front opening and a rear opening. A divider plate is mounted to the side walls for pivotal movement about a horizontal axis between the front and rear openings. The bottom wall of the housing has an upper surface which is radial from the horizontal axis. The lower end of the divider plate remains close to the upper surface in all positions between a stop at the front opening and a stop at the rear opening.Type: GrantFiled: September 28, 1998Date of Patent: April 25, 2000Inventor: E. Rodney Stephens
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Patent number: 5992062Abstract: A bucket arrangement for an earthworking machine is provided with a cutting edge plate which is bowed outwardly and has a serrated leading edge such that a center tooth assembly is disposed in a plane of engagement with the soil ahead of and below the plane of engagement of a pair of side tooth assemblies. Thus, the center tooth makes penetrating engagement with the soil prior to the side teeth, providing the bucket arrangement with greater penetrating ability. The ability of the bucket to cut or slice through the soil is also enhanced by the serrated portions of the cutting edge plate.Type: GrantFiled: December 11, 1997Date of Patent: November 30, 1999Assignee: Caterpillar Inc.Inventors: Robert D. Evans, Gary R. Woerman
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Patent number: 5974705Abstract: A Snubber is used to damp the swing of the door on an excavator bucket to prevent the door form being damaged by repeatedly slamming shut. The snubber has housing which mounts to an excavator bucket and a shaft pivotally mounted in the housing and connected to an excavator door. The shaft turns when the excavator door opens. The housing has a cylindrical cavity around the shaft. The cavity is divided into two volumes by a dam and a wiper arm on the shaft. The wiper arm forces hydraulic fluid to flow through an orifice between the volumes as the shaft turns. The wiper arm has end seals which seal against end walls of the cavity. The end seals are forced outwardly by hydraulic pressure when the door is closing. A one-way valve allows hydraulic fluid to bypass the orifice while the door is opening. The snubber requires less maintenance than previous friction snubbers.Type: GrantFiled: September 24, 1997Date of Patent: November 2, 1999Assignee: Risley Enterprises Ltd.Inventors: Reggald Emory Isley, Robert Myles Buchan, Douglas Calvin Gatter
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Patent number: 5953839Abstract: An excavating attachment for conventional earth moving equipment that is capable of moving a shovel in generally horizontal, linear, non-arcuate, paths to dig and remove soil and other material from underneath a structure such as a series of pipes leading to a chemical facility. The excavating attachment comprises a frame including structure for securing same onto the free end of the longitudinally extending boom of conventional earth moving equipment, flexible hoses for connection to the power plant of the conventional earth moving equipment, a pair of parallel hollow, tubes; a shovel member including a pair of parallel, steel tubes, for reciprocating movement within the hollow tubes of the frame, and a shovel or scoop; and hydraulic cylinders secured to the frame and the shovel member and in communication with the flexible hoses for reciprocating the shovel member relative to the frame in linear, non-arcuate paths.Type: GrantFiled: September 22, 1997Date of Patent: September 21, 1999Inventor: J. Kelly Meeks
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Patent number: 5946832Abstract: The invention relates to a vibration bucket arrangement comprising a bucket part (1) that comprises a bottom (2), a rear part (3) and lateral end parts (4 to 5). The arrangement further comprises an attachment part (6, 8, 9, 9a to 9d, 99) with which the bucket part (1) can be attached to a construction machine, and a vibration unit (10) attached to the bucket part (1), which unit comprises a vibrating assembly, such as a wabbler (10a, 10b) to be used by a regulating element. The arrangement further comprises a flexible attachment (30) on which the bucket part is arranged. In accordance with the invention, the vibration bucket arrangement comprises a locking and releasing assembly (16, 17 to 22) for locking the flexible attachment (30) of the bucket part essentially rigid when moving from vibration use to bucket use and for releasing the locking when moving from bucket use to vibration use.Type: GrantFiled: October 9, 1997Date of Patent: September 7, 1999Assignee: Takope OyInventors: Tapani Koivuranta, Pekka Koivuranta
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Patent number: 5940996Abstract: The present invention is directed toward a loader bucket which has a back bucket assembly, a front bucket assembly that pivotably mounts to the back bucket assembly forming an extension thereof in the closed position and an actuator for pivoting the front bucket assembly relative to the back bucket assembly. The front bucket assembly includes an ejector panel that is adapted to swing behind the front bucket assembly and through the back bucket assembly as the front bucket assembly is pivoted by the actuator relative to the back bucket assembly. As the ejector panel sweeps through the back bucket assembly it sweeps out of the back bucket assembly without dumping the back bucket assembly. The lower wall of the back bucket assembly is cylindrically contoured to closely clear the ejector panel as it sweeps through the back bucket assembly.Type: GrantFiled: January 26, 1998Date of Patent: August 24, 1999Inventor: William D. Cummings
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Patent number: 5918390Abstract: A deep bucket (1) for exchangeable mounting at the jib head of a bucket excavator consists of three shells (2, 31, 32), which are movable relative to each other and constrainedly guided towards each other. The width of the deep bucket (1) is steplessly adjustable between a minimum value and a maximum value. At least two double scissors systems (5, 6; 7, 8) are provided for the actuation and for the parallel constrained guidance of the side shells (31, 32) in each adjusted spacing.Type: GrantFiled: December 1, 1997Date of Patent: July 6, 1999Inventor: Thomas Ruff
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Patent number: 5909961Abstract: A ditch digging apparatus including a bucket having a bottom wall with a radius curvature for digging ditches deeper than four feet, a back wall, a pair of spaced-apart side wall, an open front, a pair of forwardly tilting bracket members and an elongated support member. This ditch digging apparatus is easily and conventionally mounted to a loader on a prime mover and is adapted to cut into the ground and form a ditch in one single longitudinal pass through the ground.Type: GrantFiled: December 1, 1997Date of Patent: June 8, 1999Inventor: Raynie Pullman
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Patent number: 5901480Abstract: An earthworking loader bucket has a specially designed bottom side reinforcement structure which includes a unitary base plate member extending rearwardly from the bottom side front bucket lip and having a front side edge welded to the rear side edge of the lip. Slots are formed in the rear side edge of the base plate and receive bottom end portions of plate-shaped lifting and tilt ears transversely welded to the curved rear side wall of the bucket. Closeout plates are interposed between the bucket rear side wall and rear side portions of the base plate, and the bottom end portions of the ears are welded to the base plate. A spaced plurality of elongated ear extension members longitudinally extend forwardly from the ear member bottom end portions and along adjacent bottom side portions of the base plate and lip, with the extension members being welded to the ear member bottom end portions, the base plate and the lip.Type: GrantFiled: December 18, 1997Date of Patent: May 11, 1999Assignee: G.H. Hensley Industries, Inc.Inventor: Wayne A. Shamblin
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Patent number: 5901479Abstract: The present invention relates to a bucket for a front-end loader. The bucket comprises a planer back and an elongated relatively narrow bottom panel that projects from the back. Extending upwardly and outwardly from the bottom panel is a pair of opposed triangular shaped sides. The triangular shaped sides and the bottom panel form a generally V-shaped forwardly converging bucket structure.Type: GrantFiled: July 29, 1997Date of Patent: May 11, 1999Inventor: Dess Langdon
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Patent number: 5832638Abstract: A low draft, high yield, dragline bucket system that has about half the weight of current art. It has a low wide configuration with special highly efficient ground engaging, loading and dumping qualities. The strength, cube accomplishment, simplicity, and unit weight combine to compound efficiencies up to 150% of former buckets. This also compounds the ability of the dragline's scope while reducing its specifications and increasing its capacity. A special precise tilt back and hold and rigging system further increases the bucket capacity and further increases its operating range.Type: GrantFiled: July 1, 1996Date of Patent: November 10, 1998Assignee: Cleal WattsInventor: Cleal T. Watts
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Patent number: 5815958Abstract: A latch assembly for an excavator dipper of the invention includes a latch bar slot having a first opening, a second opening and a side wall. An annular projection protrudes from the latch bar slot side wall and has an upper surface and a side surface. A latch bar is slidably and removably mounted in the latch bar slot. The latch bar has a first portion, a second portion and a tapered portion located between the first and the second portion. The first portion has a larger cross-sectional area than the second portion. An upper retainer insert assembly is removably carried in the latch bar slot between the first opening and the annular projection.Type: GrantFiled: December 30, 1996Date of Patent: October 6, 1998Assignee: The Frog, Switch & Manufacturing Co.Inventors: John R. Olds, Mark R. Alt
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Patent number: 5815959Abstract: In earthmoving buckets, and more especially in deep buckets, the heel portion is subjected to excessive wear due to its extended shape rubbing or impinging upon excavation material while engaged in digging operations. The present invention teaches a bucket shape which reduces the wear of the heel portion while retaining bucket capacity by using a multiple radius design to define the shape in profile.Type: GrantFiled: April 28, 1997Date of Patent: October 6, 1998Assignee: Caterpillar Inc.Inventors: Delaine D. Bahner, Gary R. Woerman
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Patent number: 5815960Abstract: Disclosed is a digging implement such as a mining shovel dipper which has a body, a movable door mounted with respect to the body and a mechanism for retarding swinging movement of the door. The mechanism includes first and second housings and plural retarding discs compressed between the housings. In the improvement, a resilient member is interposed between the first housing and the discs. And most preferably, a separate resilient member is interposed between each housing, respectively, and the discs. The thickness of each resilient member is selected in view of the aggregate thickness of the discs and the number of resilient members if more than one such member is used. A highly preferred resilient member is an elastomeric washer. The new retarding mechanism substantially extends the time period between mechanism adjustments and results in improved machine productivity.Type: GrantFiled: June 16, 1997Date of Patent: October 6, 1998Assignee: Harnischfeger CorporationInventor: Carl A. Soczka
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Patent number: 5743030Abstract: A loader such as a front end loader is provided with dam shell type bucket having a blade section, and collecting section pivoted thereon. The collecting section has a separating section having a separating surface curved on an are centered on pivotal axis of the collecting section and positioned relative to the leading edge of the blade section so that it tends to wipe clean the separating surface as it passes thereby when the relevant bucket sections are relatively pivoted from a screening position to a closed position. When the clam shell is in the screening position, the separating section forms at least a portion of the bottom of the bucket. A sifting screen for sifting finer material may also be provided as a dam at the free end of the collecting section.Type: GrantFiled: March 20, 1996Date of Patent: April 28, 1998Inventor: Chester Lea Sirr
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Patent number: 5735067Abstract: A Snubber is used to damp the swing of the door on an excavator bucket to prevent the door form being damaged by repeatedly slamming shut. The snubber has housing which mounts to an excavator bucket and a shaft pivotally mounted in the housing and connected to an excavator door. The shaft turns when the excavator door opens. The housing has a cylindrical cavity around the shaft. The cavity is divided into two volumes by a dam and a wiper arm on the shaft. The wiper arm forces hydraulic fluid to flow through an orifice between the volumes as the shaft turns. The wiper arm has end seals which seal against end walls of the cavity. The end seals are forced outwardly by hydraulic pressure when the door is closing. A one-way valve allows hydraulic fluid to bypass the orifice while the door is opening. The snubber requires less maintenance than previous friction snubbers.Type: GrantFiled: April 26, 1996Date of Patent: April 7, 1998Assignee: Risley Enterprises Ltd.Inventors: Reggald Emory Isley, Robert Myles Buchan, Douglas Calvin Gatter
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Patent number: 5680717Abstract: An excavating bucket for rotating bucket excavators has a trough-shaped bucket having a forward edge formed by a U-shaped bucket lip. The lip has multiple shank holes and a cutting tooth in each shank hole which is removably attached to the lip. There are two sets of corner shank holes which lie on a circular line and receive a corresponding number of corner cutting teeth. Cutting portions of the corner teeth can be variously shaped so that the corner teeth can be adapted for varying cutting conditions. The cutting teeth have a weakening undercut adjacent their respective shafts so that forces acting on the teeth cause tooth deflections in the area of the recess while a remainder of the tooth, to which wear resistant layers of materials can be applied, is subjected to substantially no deflection to prevent a spalling of the wear resistant layers. An aft end of the bucket is defined by a multiplicity of side-by-side chains mounted on bars extending transversely between side plates of the bucket.Type: GrantFiled: November 14, 1995Date of Patent: October 28, 1997Inventor: Robert S. Bierwith
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Patent number: 5628130Abstract: A tool for attachment to the end of the articulated arm of a backhoe or other power shovel is disclosed. The tool provides a forwardly directed blade; i.e. a blade directed away from the tractor unit of the power shovel. The blade is usable to excavate soil from under a buried pipeline, and allows an operator to see the blade while in use. The blade of the invention is substantially planar in structure, and is formed from a larger flat bottom plate welded to a smaller flat top plate. The tool additionally provides left and right ears, each ear having an upper and a lower pin hole for attachment to the end of the articulated arm. Each pin hole provides a reinforcing collar. Braces reinforce the connection between the blade and the ears.Type: GrantFiled: December 19, 1995Date of Patent: May 13, 1997Assignee: RFJ Industries Ltd.Inventor: Roland Desrochers
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Patent number: 5619811Abstract: The invention relates to a device for handling material, especially soil, the device including a bucket (1) of a machine having a grinding device (2) for the material fitted thereto, the grinding device comprising at least two essentially parallel shafts (3) which are set at a distance from each other and rotatable in synchronization, the shafts having grinding members (4) for the material, whereby the grinding members (4) of two adjacent shafts overlap each other, the bottom of the bucket (1) including an outlet opening (5) for the handled material. The grinding members are provided with numerous discs (4) which are spaced apart from each other on each shaft (3), the peripheral surfaces of the discs comprising projections, whereby a notch is provided between two adjacent projections.Type: GrantFiled: February 7, 1995Date of Patent: April 15, 1997Inventor: Mikko Yrjola
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Patent number: 5619810Abstract: Disclosed is a digging implement (such as a dragline bucket) having a trunnion link connected to the implement by a pin secured in place by a retention device. Such device is coupled to the pin along the pin longitudinal axis. The pin has a first portion engaging the implement and having internal threads and the retention device has a stop member and an exteriorly-threaded stem extending therefrom. The stem is threaded to the internal threads of the first portion. Preferably, the stop member is recessed in a protective pocket which helps protect the retention device from damage otherwise caused by material being handled by the implement.Type: GrantFiled: December 4, 1995Date of Patent: April 15, 1997Assignee: Harnischfeger CorporationInventor: Rikos A. Kasim
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Patent number: 5613308Abstract: A door brake assembly (20) to control the closing of a dipper door (11) on a shovel dipper (10) has a torsion bar (39) connected to the dipper door (11) by links (15, 32). A lever (48) on the other end of the torsion bar (39) selectively engages spaced snubbers (57, 58) to provide a braking (or damping) action to the dipper door (11) in the last portion of its travel to the open or closed position. The torsion bar (39) is mounted in journals (23, 24, 43, 44) on a base (22) mounted on the dipper (10). Usually, each dipper door (11) is provided with a pair of the brake assemblies (20) mounted in mirror image.Type: GrantFiled: August 24, 1995Date of Patent: March 25, 1997Assignee: Marlene J. LittleInventor: Alexander R. Little
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Patent number: 5611158Abstract: An assembly for coupling an implement to an operating arm of a machine generally consisting of a first coupling component fixedly mountable on the implement, having a plurality of sets of opposed abutment surfaces spaced circumferentially relative to a given axis thereof and disposed substantially radially relative to such axis, and an axially spaced abutment surface, and a second coupling component disposable in mating relation with the first coupling component, having apparatus for detachably connecting to the operating arm, at least one locking member displaceable between an extended position and an retracted position received between a selected set of the radially disposed, opposed abutment surfaces and the axially spaced abutment surface, when the components are disposed in mating relation, and apparatus for selectively displacing the locking member into the extended and retracted positions.Type: GrantFiled: May 17, 1995Date of Patent: March 18, 1997Assignee: Rockland, Inc.Inventors: Samuel S. Pratt, Dan Shaffer, Tim A. Davis, Ashley Heiple, Peter N. Lalos
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Patent number: 5592762Abstract: An excavator linkage comprising a ternary link with first, second and third pivot connections and a follower link with first and second pivot connections. The first pivot connection of the ternary link is pivotally coupled to the rod end of the bucket actuating hydraulic cylinder. The second pivot connection of the ternary link is pivotally coupled to the excavator bucket. In addition, the excavator bucket is pivotally connected to the dipperstick. The follower link has a first pivot connection that is pivotally connected to the dipperstick and a second pivot connection that is pivotally connected to the third pivot connection of the ternary link. In one frame of reference, the third pivot connection of the ternary link is located between the first and second pivot connections of the ternary link. In addition, the third pivot connection of the ternary link lies above a plane defined by the first and second pivot connections of the ternary link.Type: GrantFiled: August 16, 1995Date of Patent: January 14, 1997Assignee: Deere & CompanyInventors: Scott S. Hendron, Michael E. Kennedy
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Patent number: 5590482Abstract: An earthen material excavator includes, a) a base undercarriage comprising running gear to move the excavator over the ground; b) a slewing platform; c) a plurality of booms operatively connected to one another, one of the booms being operatively connected with the slewing platform; and d) a digging bucket apparatus mounted to another of the booms, the bucket apparatus including, i) a rigid digging assembly having a fore earth working end and an aft non-earth-working end, the digging assembly comprising an internal throat positioned between the assembly fore and aft ends; and ii) a substantially rigid earthen material container removably mounted relative to the aft end of the rigid digging assembly, the rigid earthen container being mounted in communication with the throat to receive earthen material transferred from the rigid digging assembly through the throat.Type: GrantFiled: June 27, 1995Date of Patent: January 7, 1997Assignee: R. A. Hanson Company, Inc.Inventors: Randy S. Peterson, Thomas W. Steele, Robert D. Walker
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Patent number: 5581916Abstract: Disclosed is an excavating, sieving and grading device for a working crawler arranged such that each pair of first and second right and left legs 14, 14a and 17, 17a are vertically disposed to a bucket main body 7, the first right and left legs are connected to each other by a first reinforcing member 15, the second right and left legs are connected to each other by a second reinforcing member 18, and first and second guide rollers 16, 19 for supporting and guiding a first guide rail 21 disposed on the bottom surface of a movable frame 12 are provided on the first and second reinforcing members. With this arrangement, the movable frame provided with the sieve net is stably supported and guided to the bucket main body to thereby increase the strength of the excavating, sieving and grading device.Type: GrantFiled: June 6, 1995Date of Patent: December 10, 1996Assignee: Hirose Co., Inc.Inventors: Takahiro Hirose, Keizo Takahashi
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Patent number: 5528844Abstract: An excavating apparatus with a compression plate and associated hydraulic cylinder for the dewatering of excavation material comprising: an excavator having a stick pivotable at its inboard end with respect to the excavator and a bucket pivotally secured with respect to the outboard end of the stick; a compression plate pivotally secured to the inboard end of the bucket, the compression plate having a planar central section, an angled leading component extending upwardly at an angle between forty and fifty degrees from the compression plate at the leading edge of the compression plate and an inverted J-shaped coupling component with a long linear segment and a short linear segment adjacent to the inboard end of the compression plate; a pivot pin coupling the free end of the short linear segment coupling component with the inboard end of the bucket and with the long linear component secured to the inboard end of the compression plate; and a plurality of apertures formed in the central section of the compressioType: GrantFiled: August 3, 1994Date of Patent: June 25, 1996Inventor: Mark R. Ellis
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Patent number: 5526591Abstract: An excavation bucket includes a bottom assembly which defines a scoop slot opening along a portion of the bottom assembly. The excavation bucket is useful for excavating material in a conventional manner in a first operating mode, and for fine-grading material in a novel manner in a second operating mode. When operating in the second operating mode the excavation bucket is capable of fine-grading adjacent buried objects without damaging the buried objects.Type: GrantFiled: September 20, 1994Date of Patent: June 18, 1996Inventor: William C. Otwell
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Patent number: 5491914Abstract: A bucket equipped with a mixing device for use in work for improving the soil of grounds such as road grounds, an excavation machine having such a bucket, and a soil improvement method using such an excavation machine. The bucket is equipped with a mixing device disposed therein, which device can be rotated by a motor whose number of revolutions per unit time is adjustable, and has an opening formed through the bottom surface thereof. Further, the bucket includes an injection device connected to an external, solidifying agent supply source.Type: GrantFiled: August 8, 1994Date of Patent: February 20, 1996Inventor: Jinichiro Negishi
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Patent number: 5477627Abstract: An attachment mounted to an articulated boom of a carrier vehicle for harvesting and dewatering peat moss material. The attachment comprises an apertured bucket for digging peat moss material and a ram movable with relation to the bucket between an extended position and a retracted position. The ram and the bucket define a variable volume press chamber which is contractible in response to movement of the ram member toward the extended position for expressing water from the load of peat moss material gathered in the bucket. The invention also extends to a novel method for harvesting and dewatering peat moss material.Type: GrantFiled: May 5, 1995Date of Patent: December 26, 1995Assignee: Johnson & Johnson Inc.Inventors: Richard Nolin, John Dery
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Patent number: 5469647Abstract: A power shovel comprising a frame, a winch mounted on the frame, a boom having a lower end mounted on the frame and having an upper end, a sheave pivotally mounted on the boom adjacent the upper end of the boom, a dipper handle mounted on the boom for pivotal movement relative thereto and relative to a dumping position, a dipper mounted on the forward end of the dipper handle and having closed and open conditions for respectively containing and dumping a load and further including a latch mechanism for releasably securing the dipper in the closed condition, and a hoist rope extending over the sheave and having one end connected to the winch and an opposite end connected to the dipper such that when the dipper handle is in the dumping position the hoist rope exerts on the dipper a force biasing the dipper to the open condition when the latch mechanism is released.Type: GrantFiled: November 18, 1993Date of Patent: November 28, 1995Assignee: Harnischfeger CorporationInventor: Richard L. Profio
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Patent number: 5416990Abstract: An excavation bucket with a scoop provided at a bottom portion of the bucket to provided fine digging and grading of materials or trenches. The excavation bucket is particularly useful for digging trenches near utilities and finishing trenches at proper grade.Type: GrantFiled: December 13, 1993Date of Patent: May 23, 1995Inventor: William C. Otwell
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Patent number: 5375896Abstract: Proposed is a bucket mechanism, particularly a ship unloader, which includes at least one rotating traction member with receiving elements fastened thereto. The receiving elements are formed of a stiff supporting member, with an elastically yielding material receiving region disposed therebelow which is preferably composed of an elastically deformable supporting frame of steel leaf springs and a rubber bucket inserted therein.Type: GrantFiled: May 24, 1993Date of Patent: December 27, 1994Assignee: PWH Anlagen & Systeme GmbHInventor: Karl-Ernst Zimmer
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Patent number: 5353531Abstract: A bucket for digging a ditch by moving the bucket longitudinally of the proposed ditch, rather than in the usual transverse direction, includes a top wall, a bottom wall, a rear wall and a pair of side walls diverging forwardly from the rear wall to an open front end of the bucket, one of the side walls being planar and defining a sharp corner with the bottom wall, the other side wall having a curved bottom end whereby a round bottom ditch can be formed by dragging the sharp corner through the soil longitudinally of the proposed ditch in a first pass, and then making a second pass through the soil using the curved end of the bucket.Type: GrantFiled: August 21, 1992Date of Patent: October 11, 1994Inventor: Rene P. Doucette
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Patent number: 5307571Abstract: A high production dragline bucket which has a low profile in the back wall as well as fewer components than those commonly in use. The bucket is not only lower in production costs, but has higher operating efficiencies. It is adaptable to both single or double sheave dumping assemblies. A replaceable basket portion for the bucket is also described.Type: GrantFiled: October 28, 1992Date of Patent: May 3, 1994Assignee: Bucyrus Erie CompanyInventors: Donald J. Behlendorf, Frederick J. Keip, Robert L. Benson
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Patent number: 5273375Abstract: A trench paving device releasably secured to the lower lip of an earth moving bucket on a front end loader. The paving device has a pair of opposing vertically disposed and rearwardly converging side plates and a vertically adjustable screed supported between the rear end portions of the side plates. Skids carried by and projecting outwardly from the side plates support the paving device in straddling relation to a trench to be paved. The paving device moves with the bucket and relative to the front end loader in response to operation of a manually operable control system on the front end loader.Type: GrantFiled: June 22, 1992Date of Patent: December 28, 1993Inventor: Jean G. Plourde
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Patent number: 5253449Abstract: An improved excavating bucket, having a pair of sidewalls, a rear wall, a floor portion and an open front portion for receiving material thereinto; a plurality of teeth members secured to the floor portion for digging into the material to be excavated; a finishing blade mounted to the bucket, the blade extending across a width greater than the width of the bucket opening, and having a forward edge for scraping; a raised channel formed on the upper face of the blade for engaging a plurality of the teeth members; sidewall members extending from the outer edges of the blade for engaging the wall of the bucket, for defining an uninterrupted travelling space for material into the bucket; and adjustable support rods able to be swivelly positioned between the blade and the bucket sidewalls to stabilize the blade mounted on the bucket.Type: GrantFiled: September 28, 1992Date of Patent: October 19, 1993Inventors: Kenneth W. Webb, Steven W. Pohl