Parallelogram Type Lift Patents (Class 172/307)
  • Patent number: 9027663
    Abstract: A linkage arrangement (10) is provided for moveably connecting an attachment (6) to a work machine (8). The linkage arrangement (10) includes linkage group (12) having an upper arm (14) with a machine pivot point (20) for connecting to the work machine (8) and an attachment pivot point (22) for connecting to the attachment (6). The linkage group (12) further has a lower arm (16) with a machine pivot point (24) for connecting to the work machine (8) and an attachment pivot point (26) for connecting to the attachment (6). An actuator (30) extends between the upper and lower arms (14, 16), whereby during normal operation an increase in the length of the actuator (30) results in the attachment (6) being lowered relative to the work machine (8).
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 12, 2015
    Assignee: Caterpillar Inc.
    Inventors: Markus Gartenmaier, Bernhard Eckl, Antoniu Nopcea, Zdenko Savsek
  • Publication number: 20040256122
    Abstract: A working element of an agricultural machine mounted on a substantially horizontal beam by a linking structure comprising at least one upper arm and at least one lower arm, the working element being subjected on one hand to a depth control force directed toward the ground and on another hand to a ballasting exerted by a ballasting device comprising at least one spring.
    Type: Application
    Filed: May 24, 2004
    Publication date: December 23, 2004
    Applicant: KUHN-NODET S. A.
    Inventor: Thierry Roibier
  • Patent number: 6098719
    Abstract: A parallelogram boom device for mounting agricultural implements has a parallelogram arrangement of a first upper beam horizontally and longitudinally aligned with a second upper beam plus a single lower beam longitudinally aligned with the first and second upper beams, but at a lower horizontal level. A first hydraulic piston unit acts via a bridle to raise and lower the parallelogram arrangement relative to the ground. An agricultural implement is attached at one end to a mounting arm supported via the parallelogram arrangement and a second hydraulic piston unit serves to move the implement in an arc about its attached end. The new boom devices also have the capability of retracting the supported implements rearwards from their forward direction of travel in the event the implement encounters a rock, stump or like obstruction.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: August 8, 2000
    Inventor: James R. Turner
  • Patent number: 5505268
    Abstract: An implement for preparing a field includes a ground engaging device that allows the implement to be pushed or pulled on the field. The ground engaging device includes a reversible roller with projections joined to an outer surface thereof to engage the ground. The projections do not extend along the complete length of the roller but rather a portion thereof thereby reducing the power necessary to rotate the roller. The implement includes reversible guards for keeping the disturbed ground in front of the roller.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: April 9, 1996
    Assignee: Glenmac, Inc.
    Inventors: Marion E. McPherson, Michael G. McPherson, Kenneth L. Innocent, Gary A. Parkos, Roger D. Noska
  • Patent number: 5461995
    Abstract: A planter includes a pair of toothed wheels which sweep mulch away from the path followed by furrow opening discs. The sweeper wheels are carried on the trailing end of a parallel bar linkage attached to a tool bar by which the planter is pulled. As a result of the parallel bar linkage, the sweeper wheels may float upwardly and downwardly independently of the planter frame in order to conform to uneven ground. A spring acts on the parallel bar linkage and may be adjusted either to press the wheels downwardly into the ground if the mulch is hard and dense or to urge the wheels upwardly and relieve some of the weight of the wheels from the ground if the mulch is loose and the underlying soil is relatively fine.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: October 31, 1995
    Assignees: Dean A. Winterton, Paw Paw Farmer's Factory Co.
    Inventor: Dean A. Winterton
  • Patent number: 5092422
    Abstract: A multipurpose horticultural crop tractor combines certain clearance and versatile implement mounting features for accommodating a wide variety of alternative field production operations. A movable operator station provides full bidirectional operator control. An operator station may also be suspended on a boom pivotably mounted to the tractor frame for repositioning of the operator station about such frame. The implement mounting system also permits alternate high or low clearance mounting of a conventional three-point hitch, which when used in an elevated position enables attachment of high crop harvesting heads. Alternative implement mounts permit simultaneous usage of two separate implements. The tractor may be outfitted for many alternative functions, such as tillagae, planting, cultivating, spraying, harvesting, materials handling, and irrigating missions, including usage of a vertically movable lift unit with horizontally adjustable lift arms.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: March 3, 1992
    Assignee: Clemson University
    Inventors: Clarence E. Hood, Jr., Robert E. Williamson, Yekutiel Alper
  • Patent number: 4953625
    Abstract: The adjustable blade apparatus (10) is adapted for use with an earth moving vehicle (12). It includes a support frame (20) which is pivotable in the vertical plane relative to the vehicle (12). A blade assembly (22) is rotatably secured to a connecting frame portion (54) of the support frame (20) by means of a turntable (26) and a swivel connection (27). The blade assembly (22) is moved relative to connecting frame (54) by hydraulic cylinders (28,30).
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: September 4, 1990
    Assignee: Delhur Industries, Inc.
    Inventor: Samuel G. Hurworth
  • Patent number: 4540054
    Abstract: A cultivator for attachment to a crop harvester including at least one tool frame member with soil tilling tools adjustably mounted relative thereto. A shaft is provided rotatably mounted relative to a support frame of the crop harvester. An actuating member is operatively connected to the shaft and the support frame for selectively imparting rotation to the shaft. A link is operatively, pivotally connected between the tool frame member and the support frame for guiding the frame member and the soil tilling tools between a raised position out of engagement with a ground surface and a lowered position into engagement with the ground surface. A connecting member is operatively connected to the shaft and the frame member for translating rotational motion of the shaft into rotatable, vertical motion of the tool frame member and the soil tilling tools about the link pivotally mounted to the support frame to selectively raise and lower the frame member and the soil tilling tools.
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: September 10, 1985
    Assignee: University of Kentucky Research Foundation
    Inventors: Larry D. Swetnam, James H. Casada, Linus R. Walton
  • Patent number: 4204578
    Abstract: A ground-engaging implement assembly for installation on a vehicle includes a U-shaped frame having a bight portion extending around one end of the vehicle and a pair of spaced leg portions extending along and connected to the respective sides of the vehicle. Each of the leg portions of the frame has a mounting face thereon and an implement such as a ripper mechanism is connected to each mounting face for penetrating material at the opposite sides of the vehicle.
    Type: Grant
    Filed: May 26, 1978
    Date of Patent: May 27, 1980
    Assignee: Caterpillar Tractor Co.
    Inventor: Robert N. Stedman
  • Patent number: 4004640
    Abstract: A hanger mechanism for the attachment of a soil engaging tool to a horizontal tool bar located at the forward end of an agricultural vehicle through a series of pivotally interconnected structures. The hanger mechanism includes an upper and lower arm structure which extend forward from the tool bar and are disposed one above the other. A vertical bar structure is pivotally connected to the forward ends of the upper and lower arm structures with the upper and lower arm structures parallel. An implement arm having an upper end adjacent and below the forward end of the lower arm structure extends rearward and downwardly to a lower end. The implement arm is pivotally attached between the upper and lower ends thereof to an extension of the vertical bar structure. A connecting link is pivotally attached at one end to the lower arm structure rearward from the forward end thereof, and pivotally attached at its other end to the upper end of the implement arm.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: January 25, 1977
    Inventor: Charles W. Bland
  • Patent number: 3970012
    Abstract: An elongated downwardly opening housing is provided for lengthwise advancement over the ground and includes mounting structure for dependingly supporting the housing from a farm implement tool bar. The housing includes front and rear transverse journaled horizontal shafts each having a pair of axially spaced circumferentially spiked wheels mounted thereon for rotation therewith. Corresponding ends of the shafts project outwardly through opposite sides of the housing and have aligned sprocket wheels mounted thereon. The sprocket wheel carried by the forward shaft is at least slightly greater in diameter than the sprocket wheel carried by the rear shaft and an endless chain is trained over the sprocket wheels drivingly connecting the forward shaft or front shaft to the rear shaft.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: July 20, 1976
    Inventor: Donald F. Jones, Sr.