Including Door Structure Or Operator Patents (Class 37/445)
  • Patent number: 10039260
    Abstract: The present invention relates to an unmanned self-propelled and self-steering device for removing manure present on a floor, including a manure slide and a drive for moving the device over the floor, wherein the manure slide is substantially U-shaped or V-shaped with two legs in order to define autonomously a manure-accommodating-space which opens in a forward direction and is closed in a rearward direction, and wherein the legs have a length in the order of magnitude of the width of the manure slide.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: August 7, 2018
    Assignee: LELY PATENT N.V.
    Inventors: Matthew Van Meurs, Roelof Stapel, Jan Martinus Van Kuilenburg, Karel Van Den Berg, Jan Lambertus Pastoor
  • Patent number: 10039261
    Abstract: The present invention relates to an unmanned self-propelled and self-steering device for removing manure present on a floor, including a manure slide and a drive for moving the device over the floor, wherein the manure slide is substantially U-shaped or V-shaped with two legs in order to define autonomously a manure-accommodating-space which opens in a forward direction and is closed in a rearward direction, and wherein the legs have a length in the order of magnitude of the width of the manure slide.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: August 7, 2018
    Assignee: LELY PATENT N.V.
    Inventors: Matthew Van Meurs, Roelof Stapel, Jan Martinus Van Kuilenburg, Karel Van Den Berg, Jan Lambertus Pastoor
  • Patent number: 9388689
    Abstract: A mining vehicle includes one or more crawlers, a first deck positioned above the crawlers, and a second deck positioned above the first deck. The first deck includes a first floor surface providing a walking surface, and one or more first deck maintenance components configured to allow a person to move among and access the first deck maintenance components. The second deck includes a second floor surface providing a walking surface, one or more second deck maintenance components, and one or more aisles configured to allow a person to move among and access the second deck maintenance components. The first and second decks are configured to provide maintenance access to the first and second deck maintenance components.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: July 12, 2016
    Assignee: Caterpillar Global Mining LLC
    Inventors: David T. Bienfang, Frank R. Szpek, Jr., Carl D. Gilmore
  • Patent number: 9096993
    Abstract: A dipper assembly includes a body defining an outer surface and an opening, a door pivotably coupled to the body, and a latch mechanism releasably securing the door relative to the body. The door is pivotable between a closed position in which the door is positioned adjacent the opening and an open position in which the door is positioned away from the opening. The latch mechanism includes a latchkeeper and a latch member engaging the latchkeeper. The latch member is coupled to one of the body and the door and the latchkeeper is coupled to the other of the body and the door. The latchkeeper includes an end surface and a stop member coupled to the end surface. The stop member engages the one of the body and the door when the door is in the closed position. The stop member is extendable relative to the end surface.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: August 4, 2015
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Matthew L. Gross, Joseph J. Colwell
  • Patent number: 9027267
    Abstract: A rolled latch for excavator buckets that increases duration and facilitates maintenance work since it is changed instead of requiring weld fill, and includes three primary parts: a core, a top wear plate and a bottom wear plate. The parts are manufactured of rolled steel. The core remains between the top and bottom wear plates, and the top and bottom wear plates are welded to the core.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: May 12, 2015
    Assignee: Minetec S.A.
    Inventors: Antonio Flores, Bernardo Vera, Claudio Zamorano
  • Patent number: 8997382
    Abstract: A dipper assembly includes a dipper, a dipper door, a closure mechanism, a trip assembly, and a camshaft support assembly. The dipper door is pivotally mounted to the dipper for movement between an open position and a closed position in which the dipper door covers the dipper bottom. The closure mechanism is configured to retain the dipper door in the closed position. The trip assembly is configured to release the dipper door for movement to the open position, and includes a trip arm coupled to a camshaft and also coupled to a trip rope. The camshaft support assembly is configured to receive the camshaft, and includes a bearing block receiving a rotatable bearing member, and a sealing mechanism.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: April 7, 2015
    Assignee: Caterpillar Global Mining LLC
    Inventors: Carl D. Gilmore, Jeffrey Klingel, Kenneth J. Meyer, Zoran Marjanovic, Richard Hoppens, Jamie K. Sherwood, Richard Alberts, Russell J. Willmann
  • Publication number: 20150089847
    Abstract: A mining machine includes a boom, a handle coupled to the boom, a dipper coupled to the handle, and a dipper door pivotally coupled to the dipper. The mining shovel also includes a dipper door trip assembly including a trip motor coupled to the boom, a trip drum coupled to the handle, a linkage assembly coupled to the dipper door, a first actuation element extending directly from the trip motor to the trip drum, and a second actuation element extending directly from the trip drum to the linkage assembly.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 2, 2015
    Inventors: Matthew L. Gross, Joseph J. Colwell, Richard Nicoson
  • Patent number: 8991080
    Abstract: A dipper assembly includes a dipper, a dipper door, and a closure mechanism. The dipper door is coupled to the dipper, and has a closed position in which the dipper door covers the dipper bottom. The closure mechanism has a first position and a second position. In the first position the closure mechanism is configured to permit movement of the dipper door away from the dipper bottom. In the second position, the closure mechanism is configured to retain the dipper door in the closed position. The closure mechanism includes a link having a first leg and a second leg, one or more side link plates coupled to the link and to the dipper back, and a closure mechanism pin assembly configured to adjust the position of the link relative to the dipper door.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: March 31, 2015
    Assignee: Caterpillar Global Mining LLC
    Inventors: Carl D. Gilmore, Jeffrey Klingel, Douglas E. Maki, Kenneth J. Meyer, Russell J. Willmann
  • Patent number: 8966792
    Abstract: An actuator system for a machine includes a linear hydraulic actuator connected to a dipper of the machine, and a hydraulic system fluidly connected to the actuator and configured to selectively direct fluid to the actuator. A component of the hydraulic system is mounted on the dipper. The system also includes an overcenter link coupled to a door of the dipper and biased to maintain the door in a closed position. A piston assembly of the actuator is configured to move the overcenter link in a first direction, via contact between the piston assembly and the overcenter link, thereby transitioning the door from the closed position to an open position.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: March 3, 2015
    Assignee: Caterpillar Inc.
    Inventors: David Thomas Bienfang, Carl Delbert Gilmore, Frank Richard Szpek, Jr.
  • Patent number: 8959805
    Abstract: An actuator system for a machine includes a hydraulic actuator connected to a dipper of the machine, and a hydraulic system fluidly connected to the actuator and configured to selectively direct fluid to the actuator. A component of the hydraulic system is mounted on the dipper. The system also includes an overcenter link coupled to a door of the dipper and biased to maintain the door in a closed position. The actuator is operable to move the overcenter link in a first direction, thereby transitioning the door from the closed position to an open position.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: February 24, 2015
    Assignee: Caterpillar Inc.
    Inventors: David Thomas Bienfang, Carl Delbert Gilmore, Frank Richard Szpek, Jr.
  • Publication number: 20150033594
    Abstract: A power shovel dipper door includes a hollow dipper body defining a first end and a second end opposite the first end, a plurality of dipper teeth coupled to the first end, a dipper door pivotally mounted at the second end, and a latch system for releasably securing the dipper door in a closed position. The latch system includes a latch bar and a latch keeper. At least one of the latch bar and latch keeper is movable between a first position and a second position. The latch keeper is engaged by the latch bar when at least one of the latch bar and latch keeper is in the first position. The latch system further includes removable inserts positioned proximate an interface where the latch bar and latch keeper are capable of engaging each other. One or more of the removable inserts includes a tool steel.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 5, 2015
    Applicant: Hamischfeger Technologies, Inc.
    Inventor: Richard Nicoson
  • Patent number: 8943715
    Abstract: A dipper assembly for a mining shovel includes a dipper body, a dipper door pivotably coupled to the dipper body, an arm, a housing coupled to one of the body and the door, and a piston. The arm includes a first end pivotably coupled to the body and a second end pivotably coupled to the door. The movement of the door relative to the body drives the arm to pivot relative to the body. The housing includes an inlet in fluid communication with a fluid source, an outlet, and a cylinder partially defining a pump chamber in fluid communication with the inlet and the outlet. The piston is movable within the cylinder and biased in a first direction. The pivoting movement of the arm causes the piston to move in a second direction opposite the first direction. The movement of the piston changes a volume of the pump chamber.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: February 3, 2015
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Matthew L. Gross, Joseph J. Colwell
  • Patent number: 8935865
    Abstract: A hydraulic system for a power shovel may have a cylinder operatively connectable to a dipper door of the power shovel, a reservoir located at and fluidly connected to the cylinder, and an accumulator located at and fluidly connected to the cylinder in parallel with the reservoir. The hydraulic system may further have a control valve disposed between the cylinder, the reservoir, and the accumulator. The control valve may be movable to selectively direct fluid from the cylinder into the accumulator and fluid from the reservoir into the cylinder.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: January 20, 2015
    Assignee: Caterpillar Inc.
    Inventors: David Thomas Bienfang, Frank Richard Szpek, Jr.
  • Patent number: 8935866
    Abstract: A hydraulic system for a power shovel may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, a crowd cylinder extendable and retractable to adjust a length of a dipper handle, and a valve in fluid communication with the tank, the pump, and the crowd cylinder. The valve may be movable to fill chambers of the crowd cylinder with fluid pressurized by the pump and to drain the chambers of the crowd cylinder to cause extension and retraction of the crowd cylinder. The hydraulic system may also have a dipper actuator located at an end of the crowd cylinder, and a passage extending through the crowd cylinder to communicate with the dipper actuator.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: January 20, 2015
    Assignee: Caterpillar Inc.
    Inventor: David Thomas Bienfang
  • Patent number: 8844174
    Abstract: A dipper including a dipper door and an impact actuated jaw defining a lip and a chin The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: September 30, 2014
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20140202048
    Abstract: An actuator system for a machine includes a hydraulic actuator connected to a dipper of the machine, and a hydraulic system fluidly connected to the actuator and configured to selectively direct fluid to the actuator. A component of the hydraulic system is mounted on the dipper. The system also includes an overcenter link coupled to a door of the dipper and biased to maintain the door in a closed position. The actuator is operable to move the overcenter link in a first direction, thereby transitioning the door from the closed position to an open position.
    Type: Application
    Filed: January 23, 2013
    Publication date: July 24, 2014
    Applicant: CATERPILLAR INC.
    Inventors: David Thomas Bienfang, Carl Delbert Gilmore, Frank Richard Szpek, JR.
  • Publication number: 20140165431
    Abstract: A dipper assembly for a mining shovel, includes a dipper having a dipper back and an open dipper bottom, and a dipper door pivotally mounted to the dipper, configured to pivot between an open position and a closed position with a swing speed, and to cover the open dipper bottom. The dipper assembly also includes one or more hydraulic door snubbers. The hydraulic door snubbers include a base having one or more connecting plates, one or more mounting plates coupled to the base and configured to receive a link extending from the dipper door, one or more friction plates, and a hydraulic cylinder configured to clamp the mounting plates, the connecting plates, the friction plates and the link together.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 19, 2014
    Applicant: Caterpillar Global Mining LLC
    Inventors: David T. Bienfang, Patrick B. Maguire
  • Publication number: 20140165432
    Abstract: A bucket for use with a cable shovel includes a shell and a door collectively defining a cavity for gathering material to be excavated. The door is pivotally secured about a pivot axis on the shell so that the door can pivot between a closed position for gathering the material and an open position for dumping the material. The pivot axis is positioned forward of an exterior surface of a back wall of the shell to create a shallower and less forceful door swing during dumping. The door has a front portion that is bent towards a digging edge on the shell so that the door has greater strength, improves bucket loading, and moves a portion of the shell away from the highest wear area.
    Type: Application
    Filed: August 29, 2013
    Publication date: June 19, 2014
    Applicant: ESCO Corporation
    Inventors: Terry L. Briscoe, Charles G. Ollinger, IV, Joshua L. Strom
  • Patent number: 8732994
    Abstract: A retarding mechanism for continuously retarding the swinging movements of a dipper door comprises a hydraulic braking assembly mounted to the dipper bucket and operatively connected to the dipper door via at least one braking arm pivotally mounted within the braking assembly and at least one linking member pivotally mounted to the dipper door. The retarding mechanism continuously retards the opening and closing movements of the dipper door by controllably braking or slowing the at least one braking arm using the compressive action of at least one hydraulic piston mounted to the braking assembly.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: May 27, 2014
    Inventors: Yannick Dubé, Alexandre Lévesque
  • Publication number: 20140079522
    Abstract: A dipper including a dipper door and an impact actuated jaw defining a lip and a chin The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 20, 2014
    Applicant: HARNISCHFEGER TECHNOLOGIES, INC.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20140059901
    Abstract: A spring assembly for a latch mechanism includes a spring, a first support, and a second support. The spring includes a first end, a second end, and a plurality of coils extending therebetween. The coils define an internal helical surface. The first support is configured to be coupled to a first pivoting member. The first support includes a grooved surface for threadingly engaging at least a portion of the internal helical surface of the spring proximate the first end. The second support is configured to be coupled to a second pivoting member. The second support includes a grooved surface for threadingly engaging at least a portion of the internal helical surface of the spring proximate the second end.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Inventors: Richard L. Nicoson, Troy Hottmann
  • Publication number: 20140007469
    Abstract: A dipper assembly includes a body defining an outer surface and an opening, a door pivotably coupled to the body, and a latch mechanism releasably securing the door relative to the body. The door is pivotable between a closed position in which the door is positioned adjacent the opening and an open position in which the door is positioned away from the opening. The latch mechanism includes a latchkeeper and a latch member engaging the latchkeeper. The latch member is coupled to one of the body and the door and the latchkeeper is coupled to the other of the body and the door. The latchkeeper includes an end surface and a stop member coupled to the end surface. The stop member engages the one of the body and the door when the door is in the closed position. The stop member is extendable relative to the end surface.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 9, 2014
    Inventors: Matthew L. Gross, Joseph J. Colwell
  • Publication number: 20140007468
    Abstract: A dipper assembly for a mining shovel includes a dipper body, a dipper door pivotably coupled to the dipper body, an arm, a housing coupled to one of the body and the door, and a piston. The arm includes a first end pivotably coupled to the body and a second end pivotably coupled to the door. The movement of the door relative to the body drives the arm to pivot relative to the body. The housing includes an inlet in fluid communication with a fluid source, an outlet, and a cylinder partially defining a pump chamber in fluid communication with the inlet and the outlet. The piston is movable within the cylinder and biased in a first direction. The pivoting movement of the arm causes the piston to move in a second direction opposite the first direction. The movement of the piston changes a volume of the pump chamber.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 9, 2014
    Inventors: Matthew L. Gross, Joseph J. Colwell
  • Patent number: 8615906
    Abstract: A drilling bucket adapted to combine with a prime mover vehicle such as an excavator. The drilling bucket includes a floor pivotally combined with the bucket. The floor has an open position wherein collected spoils are emptied from the bucket and a closed position for retaining spoils in the bucket during operation. A release assembly is adapted to securely hold the floor in its closed position until it is actuated to release it to its open position. Some embodiments of the drilling bucket comprise two separate internal cavities. The first cavity is adapted to receive the spoils as the bucket is rotated beneath the ground by the prime mover vehicle. The second cavity is adapted to house portions of the release assembly. The second cavity may serve as a vent which allows air to pass the bucket as the bucket is being raised or lowered in a hole.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: December 31, 2013
    Assignee: Pengo Corporation
    Inventors: Eric Matthias, Michael Reinert
  • Publication number: 20130340300
    Abstract: A rolled latch for excavator buckets that increases duration and facilitates maintenance work since it is changed instead of requiring weld fill, and includes three primary parts: a nucleus, a top lid and a bottom lid. The parts are manufactured of rolled steel. The nucleus remains between the top and bottom lids, and the top and bottom lids are welded to the nucleus.
    Type: Application
    Filed: December 10, 2012
    Publication date: December 26, 2013
    Applicant: MINETEC S.A.
    Inventor: Antonio FLORES
  • Patent number: 8590180
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin. The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: November 26, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20130192099
    Abstract: A dipper assembly includes a dipper, a dipper door, and a closure mechanism. The dipper door is coupled to the dipper, and has a closed position in which the dipper door covers the dipper bottom. The closure mechanism has a first position and a second position. In the first position the closure mechanism is configured to permit movement of the dipper door away from the dipper bottom. In the second position, the closure mechanism is configured to retain the dipper door in the closed position. The closure mechanism includes a link having a first leg and a second leg, one or more side link plates coupled to the link and to the dipper back, and a closure mechanism pin assembly configured to adjust the position of the link relative to the dipper door.
    Type: Application
    Filed: January 25, 2013
    Publication date: August 1, 2013
    Applicant: Caterpillar Global Mining LLC
    Inventor: Caterpillar Global Mining LLC
  • Publication number: 20130192100
    Abstract: A dipper assembly includes a dipper, a dipper door, a closure mechanism, and one or more block assemblies. The dipper door is pivotally mounted to the dipper, and has a closed position in which the dipper door covers the dipper bottom. The closure mechanism has a locked position and an unlocked position, and is coupled to the dipper back and the dipper door. In the locked position, the closure mechanism holds the dipper door in the closed position. In the unlocked position, the closure mechanism allows the dipper door to swing away from the closed position. The block assemblies are coupled to the dipper back and limit a rotation of the side link plate to a pre-defined angle that corresponds to the closed position.
    Type: Application
    Filed: January 28, 2013
    Publication date: August 1, 2013
    Applicant: Caterpillar Global Mining LLC
    Inventor: Caterpillar Global Mining LLC
  • Publication number: 20130192101
    Abstract: A dipper assembly includes a dipper, a dipper door, a closure mechanism, a trip assembly, and a camshaft support assembly. The dipper door is pivotally mounted to the dipper for movement between an open position and a closed position in which the dipper door covers the dipper bottom. The closure mechanism is configured to retain the dipper door in the closed position. The trip assembly is configured to release the dipper door for movement to the open position, and includes a trip arm coupled to a camshaft and also coupled to a trip rope. The camshaft support assembly is configured to receive the camshaft, and includes a bearing block receiving a rotatable bearing member, and a sealing mechanism.
    Type: Application
    Filed: January 29, 2013
    Publication date: August 1, 2013
    Applicant: Caterpillar Global Mining LLC
    Inventor: Caterpillar Global Mining LLC
  • Publication number: 20130000160
    Abstract: A closure member is pivotally connected with respect to a hydraulically operated bucket. A link member is pivotally connected to a hydraulically operated arm segment. The link member is also pivotally connected to the closure member. The closure member and the hydraulically operated bucket are connected for simultaneous pivotal movement in opposite directions with respect to each other.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 3, 2013
    Inventor: Herbert S. Kobayashi
  • Publication number: 20120291319
    Abstract: Apparatus and method for material distribution, including a draw-bar to which is fixedly connected a bucket body. Wheels are attached to the drawbar on opposite sides of the bucket body between an open side and a gate thereof. A lower edge of the open side of the bucket body, which can receive material, is in the form of a cutting blade or teeth. The gate, which is disposed opposite from the open side, can be opened and closed. At least part of a top side of the bucket body forms a platform for an operator. At least one engine is provided and is drivingly connected to the wheels. A handlebar is connected to the bucket body, forward of the platform, for pivoting the bucket body about the wheels so that the cutting blade or teeth can be brought into or out of contact with a surface.
    Type: Application
    Filed: May 15, 2012
    Publication date: November 22, 2012
    Inventor: David A. Jones
  • Publication number: 20120260538
    Abstract: A snubber for a mining shovel including a dipper body and a dipper door rotatably coupled to the dipper body. The snubber includes a housing having an internal wall defining a fluid-filled chamber, a shaft rotatably coupled to the housing and including a portion positioned within the chamber, a paddle positioned within the chamber, a dam positioned within the chamber, a first valve, and a second valve. Rotation of the dipper door relative to the dipper body causes rotation of the shaft relative to the housing. The paddle is coupled to the shaft such that the paddle rotates with the shaft. The dam and paddle substantially partition the internal chamber into a first portion and a second portion. The first valve controls fluid flow from the first chamber to the second chamber, and the second valve controls fluid flow from the second chamber to the first chamber.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 18, 2012
    Inventors: Dave Schob, Richard Nicoson, William R. Powers
  • Patent number: 8136272
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin. The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: March 20, 2012
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20110239494
    Abstract: A retarding mechanism for continuously retarding the swinging movements of a dipper door is disclosed. The retarding mechanism comprises a hydraulic braking assembly mounted to the dipper bucket and operatively connected to the dipper door via at least one braking arm pivotally mounted within the braking assembly and at least one linking member pivotally mounted to the dipper door. The retarding mechanism continuously retards the opening and closing movements of the dipper door by controllably braking or slowing the at least one braking arm using the compressive action of at least one hydraulic piston mounted to the braking assembly.
    Type: Application
    Filed: March 29, 2011
    Publication date: October 6, 2011
    Inventors: Yannick Dubé, Alexandre Lévesque
  • Publication number: 20110146114
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Application
    Filed: January 7, 2011
    Publication date: June 23, 2011
    Applicant: HARNISCHFEGER TECHNOLOGIES, INC.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Patent number: 7937859
    Abstract: A wheeled load transfer device has a load carrying member, a handle assembly and a pair of wheels optionally connected to a distal end of the handles and preferably offset below the plane of the handles. The load carrying member includes opposing side portions, a bottom portion. The load carrying member is rotatable between a first loading position which is preferably parallel to the ground and a second load transporting position which is inclined to the ground to better retain the load. The load carrying member can be rotated to different positions to scoop, transport and dump the load.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: May 10, 2011
    Inventor: George R. Downes
  • Publication number: 20100212194
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin. The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Application
    Filed: January 8, 2010
    Publication date: August 26, 2010
    Applicant: HARNISCHFEGER TECHNOLOGIES, INC.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20090211121
    Abstract: A quick-release multipurpose implement for pivotal attachment to a loader bucket of the type having a load receiving volume defined in part by opposing upright spaced apart sides. The implement comprises a pivot frame sized to fit over the receiving volume formed by a loader bucket. The pivot frame includes two opposing pivot arm supports that extend from the pivot frame for pivotally supporting the pivot frame in a plurality of positions relative to the loader bucket. A receiving base is provided and designed to be mounted and fixed to each side of the loader bucket for pivotally receiving a pivot arm support. At least one axially adjustable means is employed to extend from the receiving base to the pivot frame for pivotally moving the frame from a first open position so that the bucket volume can be loaded, to a second closed position to cover the receiving volume of the bucket.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 27, 2009
    Inventors: Phillips W. Doster, JR., Gerald F. Winge
  • Publication number: 20090038186
    Abstract: An extendable frame work vehicle offering enhanced versatility, safety and effectiveness. The vehicle includes an adjustable frame with front and rear portions that extend or retract with respect to each other. The front portion is supported by a first pair of wheels and said rear portion is supported by a second pair of wheels. Each wheel is independently driven and steered. The vehicle also includes an engine mounted on the rear portion of the frame. Incorporated into the vehicle is an electro-hydraulic assembly which enables extension and retraction of the adjustable frame. The assembly includes a sensor-responsive microprocessor controller, at least one hydraulic pump, at least one hydraulic drive motor, and at least one valve network.
    Type: Application
    Filed: August 6, 2007
    Publication date: February 12, 2009
    Applicant: Extendquip, LLC
    Inventors: Chris Osswald, Walter A. Osswald, Marcus F. Dack, Kenneth Buelt, Thomas E. Price, JR., Alan Severns, Jeffrey A. Wierschke, Joe A. Racz, David R. Bauer, Justin D. Gasal
  • Publication number: 20080127532
    Abstract: An excavation bucket assembly (10) is mounted to a tractor. A soil gathering trenching blade (48) is supported by an upwardly extending rear wall (18) and is movable down through a soil receiving opening (32) to scoop soil from beneath the ground wall (16) of the bucket, with the opening (32) being placed rearwardly of the front edge (30) of the ground wall, providing adequate space in the soil collection chamber (28) for receiving the excavated soil.
    Type: Application
    Filed: December 1, 2006
    Publication date: June 5, 2008
    Inventor: Robert L. Reid
  • Patent number: 7360327
    Abstract: A pusher/bucket has back plate with wings pivotably mounted at either end, and a drop blade pivotably mounted thereto. The drop blade can be secured in a raised position where it is superimposed over the back plate; when in the raised position, the wings can be positioned relative to the back plate to provide a wing plow. The wings can be folded parallel to the back plate, with the raised drop blade residing therebetween. When the wings are normal to the back plate, the drop blade can be secured in a lowered, horizontal position; in this position, the drop blade acts as the bottom of a loading bucket, the sides being formed by the wings and the back plate. A float mechanism allows the pusher/bucket to push material across uneven terrain, and is preferably disabled when the pusher/bucket is configured as a bucket for loading and dumping material.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: April 22, 2008
    Assignee: Ralph L. Osgood, Inc.
    Inventors: Kevin R. Osgood, James H. Davis, David J. Smith, Sr.
  • Patent number: 7356949
    Abstract: A scraping device, a system and a method for collecting a material are provided. The scraping device may have a bowl having a first end and a second end. A lip may be positioned at the first end and may cover an opening at the first end. In an embodiment, direct mounted cylinders may be attached to the lip and may move the lip to completely cover or uncover the opening. The scraping device may have a tongue mounted to the bowl having a triangular-shaped plate mechanism that may be used to raise and to lower a cutting edge attached to the bowl. Cylinders connected to the mechanism may be retracted or extended to raise or to lower the scraping device. A load within the scraping device may be lifted by force exerted from a barrel end of a cylinder, thus utilizing a maximum potential of the cylinder.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: April 15, 2008
    Assignee: Caterpillar Inc.
    Inventors: John P. Moyna, David K Kobliska, James P. Junk
  • Patent number: 7096610
    Abstract: A dipper assembly includes a dipper, a dipper door, ands a closure mechanism. The dipper door is pivotally linked relative to the dipper, and has a closed position in which the dipper door closes the open bottom. The closure mechanism has a lock position and an unlock position, and is fixed relative to the dipper and linked to the dipper door. In the lock position, the closure mechanism holds the dipper door in the closed position. In the unlock position, the closure mechanism allows the dipper door to swing away from the closed position.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: August 29, 2006
    Assignee: Bucyrus International, Inc.
    Inventor: Carl D. Gilmore
  • Patent number: 6910289
    Abstract: A scraping device, a system and a method for collecting a material are provided. The scraping device may have a bowl having a first end and a second end. A lip may be positioned at the first end and may cover an opening at the first end. In an embodiment, direct mounted cylinders may be attached to the lip and may move the lip to completely cover or uncover the opening. The scraping device may have a tongue mounted to the bowl having a triangular-shaped plate mechanism that may be used to raise and to lower a cutting edge attached to the bowl. Cylinders connected to the mechanism may be retracted or extended to raise or to lower the scraping device. A load within the scraping device may be lifted by force exerted from a barrel end of a cylinder, thus utilizing a maximum potential of the cylinder.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: June 28, 2005
    Assignee: CJ Moyna + Sons, Inc.
    Inventors: John P. Moyna, David K. Kobliska, James P. Junk
  • Patent number: 6591521
    Abstract: A dipper assembly includes a dipper having an open bottom and forward end, and a door pivotally linked to the dipper. The dipper bottom is defined by dipper wall bottom edges. The door has a bottom wall and side walls which extend above the bottom wall to define a volume between the side walls, wherein top edges of the side walls abut bottom edges of the dipper wall bottom edges to close the dipper bottom.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 15, 2003
    Assignee: Bucyrus International, Inc.
    Inventor: Robert F. Brown
  • Patent number: 6467202
    Abstract: A dipper door pivotally mounted to a dipper is controlled as it pivots between open and closed positions. In one embodiment, the door is controlled by a brake pivotally linking the door to the dipper. In another embodiment, the door is pivotally mounted to the dipper by a pin, and the door is controlled by a linkage actuated by a linear actuator. The pivot point of the door is positioned above the dipper bottom to decrease the dump height of the dipper.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: October 22, 2002
    Assignee: Bucyrus International, Inc.
    Inventor: Robert F. Brown, Jr.
  • Publication number: 20020040540
    Abstract: A dipper assembly includes a dipper having an open bottom and forward end, and a door pivotally linked to the dipper. The dipper bottom is defined by dipper wall bottom edges. The door has a bottom wall and side walls which extend above the bottom wall to define a volume between the side walls, wherein top edges of the side walls abut bottom edges of the dipper wall bottom edges to close the dipper bottom.
    Type: Application
    Filed: September 26, 2001
    Publication date: April 11, 2002
    Inventor: Robert F. Brown
  • Patent number: 6301809
    Abstract: An implement for use with a bucket mounted to a dipper boom of an earth working machine wherein the implement includes bars slidable mounting within guide elements mounted to the dipper boom such that the bars may be moved by gravity from a first position spaced from the bucket to a second position in generally opposing relationship with respect to an opening in the bucket so as to facilitate the retention of materials within the bucket.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: October 16, 2001
    Inventor: Slone Staggs, Jr.
  • Patent number: 6219946
    Abstract: Power shovels include a dipper door which must be held shut to retain a load of material within a dipper and which must be allowed to open to discharge the load of material from the dipper. Such dipper doors are extremely heavy and, as a result, the opening and closing of the dipper doors must be dampened in order to prevent the dipper doors from banging against other components of the power shovels. There is provided a hydraulic assembly which is mounted to a dipper body and a dipper door of a dipper of a power shovel. The hydraulic assembly includes a restricted flow conduit to prevent unrestricted flow of hydraulic fluid between fluid chambers of the hydraulic assembly. Accordingly, as the dipper door opens or closes, as the hydraulic fluid moves from one chamber of the hydraulic assembly to the other, the restricted movement of the fluid causes the dipper door to open or close in a controlled manner thereby dampening the effect of movement of the dipper door.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: April 24, 2001
    Assignee: Harnischfeger Technologies, Inc
    Inventor: Carl A. Soczka
  • Patent number: 5974705
    Abstract: 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: Grant
    Filed: September 24, 1997
    Date of Patent: November 2, 1999
    Assignee: Risley Enterprises Ltd.
    Inventors: Reggald Emory Isley, Robert Myles Buchan, Douglas Calvin Gatter