Handle Body Structure Patents (Class 414/727)
  • Patent number: 10472794
    Abstract: A front loader including: a pair of masts provided to a machine body frame of a work vehicle in a detachable manner; a pair of lifting arms coupled to the masts in a vertically rotatable manner; and a work equipment mounted to the lifting arms. Each lifting arm includes a front lifting arm attached to one of the masts and a rear lifting arm attached to the work equipment, each of the front lifting arm and the rear lifting arm has a hollow, rectangular cross-section. The rear end portion of the front lifting arm is inserted into the front end portion of the rear lifting arm, and is welded. The side plate of the rear lifting arm at a location corresponding to the insertion portion has a protruding portion that extends along the side plate of the front lifting arm, and the protruding portion is welded.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: November 12, 2019
    Assignee: YANMAR CO., LTD.
    Inventor: Tetsuya Iida
  • Patent number: 10450717
    Abstract: In accordance with an example embodiment, a structural attachment assembly for a work vehicle is disclosed. The structural attachment assembly comprises opposing first and second connector ends. The first connector end is arranged for removable or fixed coupling to a frame of the work vehicle and the second connector end is arranged for removable or fixed coupling to another member of the attachment assembly. A support structure is coupled to and interposedly arranged between the first connector end and the second connector end. The support structure comprises a plurality of walls with inner surfaces defining an interior cavity. The interior cavity comprises a first reinforcement member and a second reinforcement member relatively arranged to form a structural reinforcement member that extends substantially through a length of the interior cavity.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: October 22, 2019
    Assignee: DEERE & COMPANY
    Inventors: Benjamin R. Wagner, Hema V. Guthy, Sankaran Subramaniam, Nathan F. Tortorella, Mohamad S. El-Zein, Timothy A. Klousia, Wylie E. Pfaff, Hector Portillo
  • Patent number: 10240318
    Abstract: The present disclosure provides a load carrying member for a machine. The load carrying member includes an outer shell, an inner shell disposed within the outer shell. The inner shell is pre-stressed. The load carrying member also includes a pin disposed through the outer shell and in contact with the inner shell to add stress to the inner shell during operation of the machine.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: March 26, 2019
    Assignee: Caterpillar Inc.
    Inventors: Clyde R. Dennis, Stephen P. Rutherford
  • Patent number: 9856624
    Abstract: A box-section arm of an excavator or the like has a pivot axis at one side. Two flat plates 25, 26 close the underside of the box-section adjacent the pivot axis, and are welded transversely from a pair of projections 28, 29 at one side, to corresponding pair of projections 28, 29 at the other side. The projections 28, 29 are partially but not wholly removed after welding.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: January 2, 2018
    Assignee: J.C. BAMFORD EXCAVATORS LIMITED
    Inventors: Mark Carthy, Dave Hurdman
  • Patent number: 9187875
    Abstract: In an arm for a construction machine formed as a box-shaped structural body by left and right side plates, an upper plate, a lower plate, and a rear plate, a left rear thick side plate constituting the left side plate, a right rear thick side plate constituting the right side plate, a rear thick upper plate constituting the upper plate, and a rear thick lower plate constituting the lower plate are formed by using a soft steel material having a large plate thickness. A left front thin side plate constituting the left side plate, a right front thin side plate constituting the right side plate, a front thin upper plate constituting the upper plate, and a front thin lower plate constituting the lower plate are formed by using a high tensile steel material having a small plate thickness. As a result, the weight of the entire arm can be reduced.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: November 17, 2015
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeshi Takahashi, Takayuki Shimodaira, Ryuji Takada, Makoto Sugaya
  • Patent number: 8998560
    Abstract: A boom assembly is provided for a material handling machine. The boom assembly includes a boom pivotally coupled to a frame of the machine. The boom has a pair of side plates, a top plate and a bottom plate that are rigidly interconnected. The top plates have a pair of slots which extend therethrough. An arm is pivotally coupled to an end of the boom. A mounting unit extends between a center portion of the side plates. A pair of hydraulic boom cylinders are coupled between the frame and the mounting unit. A pair of spaced apart arm cylinder mounting plates are rigidly mounted to the mounting unit. Each mounting plate extends through a corresponding one of the slots. An arm cylinder is connected between the mounting plates and an arm.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: April 7, 2015
    Assignee: Deere & Company
    Inventors: Jesse A. Crane, David E. Lemm
  • Patent number: 8991029
    Abstract: A beam structure of the present disclosure includes a baffle plate. A plurality of lap strips are attached around outer edges of the baffle plate. An adhesive layer is applied to outer surfaces of the lap strips. A plurality of sidewalls are assembled together around the adhesive layer, the lap strips and the baffle plate, thereby forming the beam structure. In an embodiment, the beam structure may be used as a boom assembly for a machine, such as an excavator machine.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: March 31, 2015
    Assignee: Caterpillar Inc.
    Inventors: Alexei P. Yelistratov, James A. Forck
  • Patent number: 8992158
    Abstract: A reinforcement device for a load bearing structure is disclosed. The reinforcement device may include a tubular wall including a first end, a second end, a throat disposed between the first end and the second end, and a curved portion disposed between the throat and each of the first end and the second end. The tubular wall may also include a first dimension at the throat and a second dimension at each of the first and second ends, the first dimension being smaller than the second dimension.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: March 31, 2015
    Assignee: Caterpillar Inc.
    Inventors: Steven Springer, Jason Musheno
  • Publication number: 20150071752
    Abstract: A box-section arm of an excavator or the like has a pivot axis at one side. Two flat plates 25, 26 close the underside of the box-section adjacent the pivot axis, and are welded transversely from a pair of projections 28, 29 at one side, to corresponding pair of projections 28, 29 at the other side. The projections 28, 29 are partially but not wholly removed after welding.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 12, 2015
    Applicant: JC BAMFORD EXCAVATORS LIMITED
    Inventors: Mark Carthy, Dave Hurdman
  • Patent number: 8974172
    Abstract: A boom has a central connection plate attached between a pair of side plates, and a rear portion side of a cover plate on a front boom portion and a front portion side of a cover plate on a rear boom portion are connected thereby. A pivoting support for a working tool cylinder used to move a working tool connected to a foremost portion of the front boom portion is provided on a front side of a top portion on each of the left and right side plates. The central connection plate is formed with a connection plate projection projecting from a front portion attached to the rear portion of the cover plate toward a midway portion so as to approach the pivoting support.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: March 10, 2015
    Assignee: Kubota Corporation
    Inventor: Ryoichi Nishi
  • Publication number: 20140334906
    Abstract: In an arm for a construction machine formed as a box-shaped structural body by left and right side plates, an upper plate, a lower plate, and a rear plate, a left rear thick side plate constituting the left side plate, a right rear thick side plate constituting the right side plate, a rear thick upper plate constituting the upper plate, and a rear thick lower plate constituting the lower plate are formed by using a soft steel material having a large plate thickness. A left front thin side plate constituting the left side plate, a right front thin side plate constituting the right side plate, a front thin upper plate constituting the upper plate, and a front thin lower plate constituting the lower plate are formed by using a high tensile steel material having a small plate thickness. As a result, the weight of the entire arm can be reduced.
    Type: Application
    Filed: February 7, 2013
    Publication date: November 13, 2014
    Inventors: Takeshi Takahashi, Takayuki Shimodaira, Ryuji Takada, Makoto Sugaya
  • Patent number: 8757956
    Abstract: A system for protecting at least one tube extending between articulating joints of a work machine including a first guard configured to be at least partially inserted inside a first opening formed in a second portion that is pivotably connected to a first portion. A second guard is configured to be at least partially inserted inside a second opening formed in the third portion that is pivotably connected to the second portion and near the first portion. The first guard and the second guard form a protective passageway for a tube extending from the first portion to the third portion, the passageway substantially preventing contact between the at least one tube and surfaces of the second portion and the third portion in close proximity with the corresponding pivotable connections.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: June 24, 2014
    Assignee: CNH Industrial America LLC
    Inventors: Joseph P. Thompson, Jeffrey E. Jackson, Jared J. Thompson, Wayne E. Bietz
  • Publication number: 20140079523
    Abstract: A laminate structure is provided. The laminate structure includes a plurality of laminate layers. The laminate structure also includes a joint interface. The joint interface includes a retention member at least partially disposed between any two of the plurality of laminate layers. Further, the retention member has an opening for receiving a pin retaining member. The retention member is configured to provide a surface for transitioning the pin retaining member to the laminate structure.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 20, 2014
    Applicant: Caterpillar Inc.
    Inventors: Jeff A. Jensen, Kevin Martin, Benjamin Nelson, Aaron Amstutz
  • Publication number: 20140056677
    Abstract: In left and right web plates (12) of a boom (11), first to fifth web materials (12A to 12E) are joined at edge portions in a front-rear direction along welding lines (13A to 13D). In an upper flange plate (14), a rear upper flange material (14A), a front upper flange material (14B), and a middle upper flange material (14C) are joined at edge portions in a front-rear direction along welding lines (15A, 15B). Ina lower flange plate (16), first to sixth lower flange materials (16A to 16F) are joined at edge portions in a front-rear direction along welding lines (17A to 17E). The welding lines (13A to 13D) of the left and right web plates (12) are disposed in positions that are different from those of the welding lines (15A, 15B) of the upper flange plate (14) and the welding lines (17A to 17E) of the lower flange plate (16) in a front-rear direction.
    Type: Application
    Filed: April 20, 2011
    Publication date: February 27, 2014
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeshi Takahashi, Atsushi Hamada, Takayuki Shimodaira, Hikaru Yamamoto, Makoto Sugaya
  • Publication number: 20140010624
    Abstract: An arm of a hydraulic excavator is formed as a box-shaped structural body surrounded by left and right side plates, an upper plate joined to each of the upper end sides of each side plate, a lower plate joined to each of the lower end sides of each side plate, and a thick rear plate joined to each of the rear end sides of each side plate and the upper plate. The side plates are formed by joining a rear thick side plate and a front thin side plate. The upper plate is formed by joining two members, that is, a rear thick upper plate and a front thin upper plate, and the lower plate is formed by joining two members, that is, a rear thick lower plate and a front thin lower plate.
    Type: Application
    Filed: May 16, 2012
    Publication date: January 9, 2014
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Makoto Sugaya, Takeshi Takahashi, Takayuki Shimodaira
  • Publication number: 20130343854
    Abstract: An arm (11) of a hydraulic excavator (1) is formed as a box-shaped structural body surrounded by left and right side plates (12, 13), an upper plate (14), a lower plate (15), and a thick rear plate (16). An upper end (16A) of the thick rear plate (16) is protruded upward from an outer surface (14A3) of the upper plate (14). Upper ends (22B) of a pair of arm cylinder brackets (22) joined to an outer surface (16C) of the thick rear plate (16) are arranged higher than the outer surface (14A3) of the rear thick upper plate (14A) and lower than the upper end (16A) of the thick rear plate (16). As a result, in each of the arm cylinder brackets (22), a joint area with the thick rear plate (16) can be ensured large, and joint strength can be improved.
    Type: Application
    Filed: May 16, 2012
    Publication date: December 26, 2013
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Makoto Sugaya, Takeshi Takahashi, Takayuki Shimodaira
  • Publication number: 20130142607
    Abstract: A boom apparatus comprises a first boom, a second boom, and a monolithc knuckle body. The knuckle body is included in a clevis attaching pivotally the first boom and the second boom.
    Type: Application
    Filed: January 31, 2013
    Publication date: June 6, 2013
    Inventor: Steven J. Ditzler
  • Publication number: 20130071216
    Abstract: The present disclosure provides a boom structure including an elongated body having a first end and a second end, the first end configured to couple to a dipper and the second end configured to couple to a support structure. The boom structure further includes a top member, a bottom member, and a pair of sides members of the body coupled to the top member and bottom member. Each side member includes a first portion extending between the first end and second end of the body and forming an outer frame structure. Each side member also includes a second portion coupled to an inner surface of the first portion and being substantially enclosed by the first portion.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Inventors: Steven J. Ditzler, Henry J. Stulen
  • Publication number: 20130051965
    Abstract: An articulating member of a work machine includes a side plate of an opposed pair of side plates, each side plate of the pair of side plates having a surface facing the other side plate. At least one mount forming a pivot joint is secured to corresponding portions of each facing surface of a side plate of the pair of side plates. A separator plate is positioned between the pair of side plates. A reinforcement member has a peripheral edge collectively secured to one side plate surface, the at least one mount and the separator plate. The reinforcement member forms a continuous compartment spaced from the surface of the side plate, the peripheral edge forms a continuous connection with the one side plate surface, the at least one mount and the separator plate, and the at least one mount is fully secured to the one side plate surface.
    Type: Application
    Filed: July 20, 2012
    Publication date: February 28, 2013
    Inventors: Nathan BRADLEY, Matthew D. Wagenbach, Jason Mattice, Ronald C. Natzke, Ralph D. Galloway
  • Publication number: 20130017049
    Abstract: A boom has a central connection plate attached between a pair of side plates, and a rear portion side of a cover plate on a front boom portion and a front portion side of a cover plate on a rear boom portion are connected thereby. A pivoting support for a working tool cylinder used to move a working tool connected to a foremost portion of the front boom portion is provided on a front side of a top portion on each of the left and right side plates. The central connection plate is formed with a connection plate projection projecting from a front portion attached to the rear portion of the cover plate toward a midway portion so as to approach the pivoting support.
    Type: Application
    Filed: March 14, 2012
    Publication date: January 17, 2013
    Applicant: KUBOTA CORPORATION
    Inventor: Ryoichi NISHI
  • Publication number: 20120301259
    Abstract: A telescopic boom (10) suitable for a material handling vehicle is provided. The boom comprises two telescopic sections. One end (12a) of an inner tube element (12) is telescopically slideable in one end (14a) of an outer tube element (14) so that a majority length of the inner tube element can be received therein. An intermediate element (16) is also provided, a first end (16a) of which resides within, and is slideable in, the outer tube element (14). A second end (16b) of the intermediate element is telescopically slideable in the end (12a) of the inner tube element (12) that resides inside the outer tube element. A first stop (20) serves to limit withdrawal of the first end (16a) of the intermediate element from the outer tube element (14), whilst a second stop (18) serves to limit withdrawal of the second end (16b) of the intermediate element from the inner tube element (12).
    Type: Application
    Filed: January 5, 2011
    Publication date: November 29, 2012
    Applicant: AGCO SA
    Inventors: Geoffroy Husson, Pierre Dupire
  • Publication number: 20090252588
    Abstract: A lift arm for a skid-steel loader, in which a pair of right and left lift arms 6, 6 are divided in two so that they are constituted as first arm portions 21 and second arm portions 22. Each of the first arm portions 21 is constituted as a long member which is constituted from a sheet metal material and a hollow portion is formed from a proximal end to a front end of the first arm portion. Reinforcing plate-shaped bodies 25A, 25B are fixed on both side faces from a central portion to the front end. Each of the second arm portions 22 is constituted from a plate-shaped body and constituted between a front wheel 3A and a loader main body 2 so as to be inserted loosely. With this structure, it is possible to provide the lift arm which enables an entire length of the skid-steer loader to be shortened.
    Type: Application
    Filed: April 9, 2009
    Publication date: October 8, 2009
    Applicants: KOMATSU LTD., KOMATSU UTILITY CO., LTD.
    Inventor: Kazuhisa SATOU
  • Patent number: 7111419
    Abstract: A digging implement (10) including an extendable linkage (12) including a bucket (14) and a thumb assembly (34) for holding materials in the bucket (14). The thumb assembly (34) is configured to rotate as the linkage (12) extends, and both the bucket (14) and the thumb assembly (34) are independently operable.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: September 26, 2006
    Assignee: Rockland, Inc.
    Inventor: John C. Miller
  • Patent number: 6615514
    Abstract: A loading machine and chassis for the same, of small size, with an excavator supplement, which can be used for loading, excavation, drilling, etc. in small spaces which were previously only accessible to persons. The operator sits astride the chassis with lateral support points for the operator's feet. A hydraulic system activates the excavator supplement coupled to a loader arm mechanism. Work tools are coupleable to the excavator supplement or the loading arm mechanism.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: September 9, 2003
    Inventor: Eloy Ayala Ruiz
  • Patent number: 6120237
    Abstract: An attachment connectable to a boom member of a machine for performing work functions generally consisting of a handle pivotally connectable to a boom member of the machine, a ground engageable arm member pivotally connected to the handle and an extendable strut assembly interconnecting the handle and arm member consisting of a hydraulic cylinder assembly having a cylinder member pivotally connected to the handle and a rod member pivotally connected to the arm member, and including means intercommunicating the base and rod ends of the cylinder member, at least one electrically operable valve disposed in the intercommunicating means and operatively connectable to control means disposed on the machine, selectively operable to open the valve and permit the free flow of fluid between the base and rod ends of the cylinder member, and correspondingly the angular displacement of the arm member relative to the handle upon maneuvering the arm member by an operator of the machine, and to close and preclude the free flo
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: September 19, 2000
    Assignee: Rockland Inc.
    Inventors: David C. Cummings, Ashley Heiple
  • Patent number: 5158420
    Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with a body extending therebetween. An axle extends from the boom attachment head into the body and is in sliding engagement with an inward wall of the body to provide lateral support thereto. The axle extends to a midportion of the body. The body is rotatable relative to the axle, and is rigidly connected to the bucket attachment head for rotation together as a unit. A linear-to-rotary transmission mechanism including a piston is disposed within the body and is operable to produce rotational movement of the body relative to the non-rotating axle. The piston is operated by the application of pressurized fluid to produce linear movement of the piston which is translated into rotational movement of the body, and provides rotation of a bucket or other work implement attached thereto about the body longitudinal axis independent of the boom attachment head.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: October 27, 1992
    Inventor: Paul P. Weyer
  • Patent number: 5071310
    Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with a body extending therebetween. An axle extends from the boom attachment head into the body and is in sliding engagement with an inward wall of the body to provide lateral support thereto. The axle extends to a midportion of the body. The body is rotatable relative to the axle, and is rigidly connected to the bucket attachment head for rotation together as a unit. A hydraulic motor is operable to produce rotational movement of the body relative to the non-rotating axle. Rotational movement of the body produces rotation of a bucket or other work implement attached thereto about the body longitudinal axis independent of the boom attachment head. The assembly uses a single thrust bearing positioned between the body and the boom attachment head to carry thrust loads in both directions.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: December 10, 1991
    Inventor: Paul P. Weyer
  • Patent number: 4973214
    Abstract: In a front-end loader, a lift arm structure including a pair of lift arms which are rigidly joined by an improved cross-piece assembly. The cross-piece assembly includes first and second members which are configured to transversely extend one within the other between the lift arms. Along their lengths, the first and second members are separated from each other such that each is permitted to distort and absorb stress. The end portions of the first member are welded to an outside surface of the respective lift arms which the end portions of the second member are welded to an inside surface of the respective lift arms.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: November 27, 1990
    Assignee: J. I. Case Company
    Inventors: Jesse L. Schupback, Richard D. Housman
  • Patent number: 4952116
    Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with an outer body extending therebetween. A shaft extends longitudinally within the outer body. An inner body is disposed within the outer body immediately inward of the outer body to provide support thereto. In one embodiment, the inner body is rigidly attached to the shaft for rotation as a unit relative to the outer body. In another embodiment, the outer body and the shaft are rigidly attached together for rotation as a unit relative to the inner body. A linear-to-rotary transmission mechanism including a piston sleeve is disposed within the inner and outer bodies and is operable to produce rotational movement of the shaft relative to whichever of the outer or inner bodies is not connected to the shaft.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: August 28, 1990
    Inventor: Paul P. Weyer
  • Patent number: 4950127
    Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with an outer body extending therebetween. A shaft extends longitudinally within the outer body. An inner body is disposed within the outer body immediately inward of the outer body to provide support thereto. In one embodiment, the inner body is rigidly attached to the shaft for rotation as a unit relative to the outer body. In another embodiment, the outer body and the shaft are rigidly attached together for rotation as a unit relative to the inner body. A linear-to-rotary transmission mechanism including a piston sleeve is disposed within the inner and outer bodies and is operable to produce rotational movement of the shaft relative to whichever of the outer or inner bodies is not connected to the shaft.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: August 21, 1990
    Inventor: Paul P. Weyer
  • Patent number: 4934897
    Abstract: An improved pipe-moving apparatus is disclosed having a pipe-insertable elongate member which is articulated for ease of use, particularly for pipe laying near trench ends. In a preferred form, the elongate member has a series of at least two carrier members pivotably interconnected end-to-end, with the proximal end of such series of carrier members attached to the controlling mechanism, and structure supporting the carrier members in alignment when the carrier member series is suspended by its proximal end. A highly preferred embodiment accommodates the removable insertion of one or more additional carrier members in the series to extend the length of the elongate member.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: June 19, 1990
    Assignee: J. I. Case Company
    Inventors: Ronald L. Anderson, John Kinney
  • Patent number: 4904151
    Abstract: There is disclosed a power loader lift arm cross tube stabilizing structure. A pair of loader lift arms are interconnected by a double torque tube stabilizing member which serves to distribute twisting forces encountered by one loader arm more evenly to that loader arm structure, as well as through the cross tube and to the other loader arm structure. The cross tube structure is comprised of two tubes, one positioned within the other, the outside tube being welded to each vertical side of each side of each lift arm member, while the inside tube is welded at its outer ends to the inner surface of the outer tube.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: February 27, 1990
    Assignee: Deere & Company
    Inventors: Marinus A. Biemans, Henry Friesen
  • Patent number: 4887939
    Abstract: An extension arm assembly for mounting on the forward ends of the boom arms of a tractor loader is described which enables the effective length of the boom arms to be extended thereby enabling the tractor loader to raise materials to a height greater than that otherwise possible. The extension arm assembly may be quickly and easily mounted on the forward ends of the boom arms without modification thereof.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: December 19, 1989
    Assignee: Westendorf Mfg. Co., Inc.
    Inventors: Joseph W. Langenfeld, Neal W. Westendorf
  • Patent number: 4806067
    Abstract: An assembly capable of being fitted to a loader which is provided with an attachment device intended, for example, for co-operation with respective one ends of two lifting arms whose respective other ends are intended to support suitable load-handling devices, such as forks, buckets etc., and lifting-ram attachments intended, for example, to co-operate with respective first ends of two lifting rams whose respective other ends are capable of co-operating with the lifting arms. The assembly is provided at the central region thereof with a device for co-operating with the attachment device, and is provided in the upper part thereof with a pivotal attachment for pivotal co-operation with a part of a load-handling arrangement. The lower part of the assembly is arranged to extend towards the front wheels of the loader, and the lower part of the assembly is firmly connected to the lifting-ram attachments originally found on the loader.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: February 21, 1989
    Inventor: Bjorn A. I. Odlund
  • Patent number: 4609322
    Abstract: Earthmoving vehicles are often provided with a linkage arrangement on one end that is utilized to manipulate a work implement, such as a loader bucket. The linkage typically includes a tilting arrangment for the bucket that incorporates a tilt lever that is mounted to a lift arm that supports the bucket. The mounting between the tilt lever and the lift arm is normally of a complex nature requiring multiple bearing surfaces and lubrication means. Others may have a structure that requires exact positioning between the relative components or a failure will occur due to improper loading. The linkage arrangement of the present invention provides a mounting member that is attached to only one of the tilt levers. It also includes an axial motion limiter that is attached to the other tilt lever. In doing so, a very simple and economical mounting device is provided. The mounting device also allows the tilt levers to rotate with respect to each other so that each of the levers function to bear a portion of the loading.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: September 2, 1986
    Assignee: Caterpillar Tractor Co.
    Inventor: Wilton E. Quant
  • Patent number: 4439089
    Abstract: A loader vehicle boom arm assembly incorporates a pair of box section boom arms in which the top plate of each box section boom arm has a cross sectional shape such that the upper surface is provided with an arcuate surface that directs foreign objects encountering the arcuate top surface off the boom arm.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: March 27, 1984
    Assignee: Dresser Industries, Inc.
    Inventors: Rodney H. Anderson, Thomas M. Cameron
  • Patent number: 4390315
    Abstract: An extendable utility boom assembly for assisting fire-fighting operations performed from a semi-submersible service vessel upon an offshore platform is disclosed. The boom assembly is moved to operating position by means of a carriage assembly which is mounted for movement along a track secured to the deck of the service vessel. Orientation of the boom assembly in azimuth and pitch is provided by a supporting frame which is pivotally mounted on the carriage assembly for angular movement through a horizontal plane, and a trunnion which is pivotally mounted on the supporting frame for angular movement through a vertical plane. An elongated utility boom is supported by roller bearing elements for axial movement through the trunnion. A first linear actuator is interconnected between the carriage assembly and supporting frame for displacing the supporting frame through the horizontal plane.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: June 28, 1983
    Assignee: Hydra Rig Incorporated
    Inventor: Thomas L. Elliston
  • Patent number: 4339225
    Abstract: A crowd drive assembly for a power shovel is described. The power shovel includes a main frame, a boom connected at the lower end thereof to the main frame, a dipper handle pivotally connected to the boom and a dipper connected to the dipper handle. A rack and pinion crowd drive arrangement is provided wherein a yoke is mounted within an opening in the boom for receiving and guiding the dipper handle as it is extended and retracted by the crowd drive. A shipper shaft is journaled in the boom and extends through trunnions therein. The yoke is pivotally mounted, coaxially with the shipper shaft directly on the trunnions which are an integral part of the boom so that loads experienced by the yoke are transmitted directly to the boom and not to the shipper shaft. A removable bearing housing arrangement supports the yoke on the trunnions.
    Type: Grant
    Filed: July 27, 1980
    Date of Patent: July 13, 1982
    Assignee: Dresser Industries, Inc.
    Inventors: Robert B. Donnally, Mark W. Trevithick
  • Patent number: 4297815
    Abstract: The invention relates to a power arm comprising four faces, two of which being constituted by plates, which arm is mounted for pivotment about an axis and with respect to a structure, and is fitted with the coupling lug of a jack comprising a pivoting axis of said jack and its support, permitting a deflection of said jack which is parallel to the deflection of the arm, said support being constituted by extended portions of the plates.The arm comprises a cross piece of which the length 1 is substantially equal to the spacing between the said extended portions and which is situated between the said extended portions, and transversed by the axis, a threaded end of which cooperates with a nut to hold the cross piece in position between the said extended portions.An application is found in the production of a shovel boom.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: November 3, 1981
    Assignee: Poclain
    Inventors: Christian D. Moro, Daniel G. Ranini
  • Patent number: 4285629
    Abstract: An extendable utility boom assembly for assisting fire-fighting operations performed from a semi-submersible service vessel upon an offshore platform is disclosed. The boom assembly is moved to operating position by means of a carriage assembly which is mounted for movement along a track secured to the deck of the service vessel. Orientation of the boom assembly in azimuth and pitch is provided by a supporting frame which is pivotally mounted on the carriage assembly for angular movement through a horizontal plane, and a boom housing which is pivotally mounted on the supporting frame for angular movement through a vertical plane. An elongated utility boom is supported by roller bearing elements for axial movement through the boom housing. A first linear actuator is interconnected between the carriage assembly and supporting frame for displacing the supporting frame through the horizontal plane.
    Type: Grant
    Filed: May 18, 1978
    Date of Patent: August 25, 1981
    Inventor: Thomas L. Elliston
  • Patent number: 4260322
    Abstract: A boom arm of a boom assembly is formed of a pair of side walls integrated into a box boom structure where the top and bottom plates are roll formed with transition edges providing a weld bed for welds attaching the side walls to the top and bottom plates. The particular cross sections of the top and bottom plates provide a weld blow-through preventing barrier and also dimensional guidance and tolerance control during assembly of the boom arm.
    Type: Grant
    Filed: October 12, 1978
    Date of Patent: April 7, 1981
    Assignee: International Harvester Company
    Inventor: Thomas M. Cameron
  • Patent number: 4193734
    Abstract: A lifting machine boom having two side walls maintained in spaced relationship to each other by a bottom wall and a top wall and a median reinforcing member dividing the interior of the boom into the first and second longitudinally extending chambers. One or more rigid pipes are attached to the median wall and run longitudinally of the boom from locations adjacent the ends. These pipes conduct pressurized fluid to and from one or more actuators carried by or associated with the boom. One said actuator is disposed in the second chamber.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: March 18, 1980
    Assignee: Massey-Ferguson Services N.V.
    Inventor: Derrick G. Williams
  • Patent number: 4185945
    Abstract: A shovel linkage for a hydraulic excavator includes boom rails having pivot means in one end for pivotal connection to an excavator and cross tubes extending between the rails near the pivot means and having pivot joints provided thereon for connection of actuating cylinders for the linkage in line with the cross tube and close to the pivot means whereby forces imparted to the linkage by the actuating cylinders will be directly through the center of the cross tube and very near the boom rail pivot means, minimizing bending moments in the linkage.The pivot joint includes a flat tab member provided on the cross tube and projecting outwardly along a diameter thereof, and a pin and ball connecting the bifurcated end of a hydraulic cylinder to the tab for limited rotation thereof. The pin is disposed substantially normal to the plane of the boom rails for unimpeded insertion and removal thereof.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: January 29, 1980
    Assignee: Caterpillar Tractor Co.
    Inventor: Stephen H. Gill
  • Patent number: 4175907
    Abstract: A shovel linkage for a hydraulic excavator or the like has spaced parallel boom link rails which are coplanar with associated spaced parallel stick link rails and pivotedly connected thereto by means of pivot joints provided on the ends thereof.Bucket stops are provided on a bucket attached to the stick and are arranged to contact the centers of the stick rails for greater strength.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: November 27, 1979
    Assignee: Caterpillar Tractor Co.
    Inventors: Harvey A. Knell, Stephen H. Gill
  • Patent number: 4162872
    Abstract: A low-profile front end loader vehicle has the bucket located as close to the front wheels as is possible without sacrificing strength and maneuverability. The lift arms are shortened and reshaped in the midportion to lower the low position of the lift arms. An irregularly shaped reinforced tubular crossbrace is provided and has end plates which coact not only with external plates on each arm for attachment of the lift cylinders to said arms, but also coact with brackets carried by said crossbrace to support the tilt arms thereon. The respective plates strengthen the lift arms and the reinforced crossbrace has internal stiffness that resists torsion and bending to provide an improved compact lift structure.
    Type: Grant
    Filed: December 13, 1977
    Date of Patent: July 31, 1979
    Assignee: Caterpillar Tractor Co.
    Inventors: Frank A. Grooss, Gerald P. Simmons
  • Patent number: 4155470
    Abstract: A boom assembly for a loader that is pivotally mounted on a tractor. The assembly includes a pair of boom arms which are pivotally connected at one end of the tractor. The arms are fabricated from two C-channels which are welded together. The arms have aligned inside apertures sized to accept a tube which is rigidly connected to both channels. The assembly is completed when a cross tie member envelopes the tubes and is rigidly secured to the inner C-channels.
    Type: Grant
    Filed: February 1, 1978
    Date of Patent: May 22, 1979
    Assignee: International Harvester Company
    Inventors: R. Dale Moore, Norbert P. Borowski
  • Patent number: 4153167
    Abstract: A shovel linkage for a hydraulic excavator includes a cross tube having pivot joints, and actuating cylinders for the linkage connected to said pivot joints thereon whereby forces imparted to the linkage by the actuating cylinders will be directly through the center of the cross tube, avoiding bending moments in the linkage.The cross tube has an internal diametrical member in line with the pivot joints and the actuating cylinders to withstand and transmit the forces imparted by the actuating cylinders.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: May 8, 1979
    Assignee: Caterpillar Tractor Co.
    Inventor: Stephen H. Gill
  • Patent number: 4143783
    Abstract: A reverse linkage loader bucket arm with an enclosed cylinder assembly and wherein a loader bucket is pivotally mounted on the arm and the cylinder assembly induces the pivotal action. The lift or support arm for the bucket is hollow along its longitudinal axis and the cylinder assembly is mounted within the hollow arm and projects through an open end thereof to pivotally connect with the bucket and the point of pivotal connection is to the side of the pivotal connection of the arm in the bucket away from the bucket. The cylinder fluid lines are also disposed within the hollow boom or lift arm, and thus the cylinder assembly and the lines or hoses are enclosed and thereby protected and arranged for reverse linkage connection relative to the arm and the bucket.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: March 13, 1979
    Assignee: J. I. Case Company
    Inventors: Gary L. Cochran, Charles D. Wilson