Sequentially Operated Servo-motors Patents (Class 172/294)
  • Patent number: 9439340
    Abstract: An agricultural tillage implement includes a center frame section having a front frame member extending transverse to a travel direction, a rear frame member extending transverse to the travel direction, and a plurality of longitudinal frame members extending from and attached between the front frame member and the rear frame member. The plurality of longitudinal frame members include a pair of side frame members positioned at respective sides of the center frame section, and a pair of load distribution frame members. A plurality of tillage implements extend downwardly from the center frame section. A pull hitch is directly attached to the front frame member at two attachment locations and extends forward from the center frame section in the travel direction. Each attachment location is aligned with a respective load distribution frame member.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: September 13, 2016
    Assignee: CNH Industrial America LLC
    Inventors: Matthew R. Sudbrink, Dean A. Knobloch
  • Patent number: 4993499
    Abstract: A wing packer has a middle frame section and two wing frame sections to which rollers are attached. The packer can be converted to a transport position by a hydraulic system which lifts the middle section and pivots the wing sections upward. The rollers are connected to the frame about a two-axis pivot which facilitates their remaining in contact with the ground on uneven terrain.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: February 19, 1991
    Assignee: F. P. Bourgault Industries Air Seeder Division Ltd.
    Inventors: Gerard F. Bourgault, Richard P. Coquet
  • Patent number: 4626032
    Abstract: Apparatus for excavating hard soils comprising support means, an endless chain capable of movement relative to said support means, drive means for moving said endless chain, means integral with said endless chain operable to contact said hard soils, and means for concentrating the force exerted by said soil contacting means against said hard soils at a specific point along said endless chain while said endless chain is being moved relative to said support means.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: December 2, 1986
    Inventors: Jesse W. Harris, Louis L. Lutich
  • Patent number: 4320589
    Abstract: An improved snowplow apparatus provided with articulated quadrilateral means permitting vertical movement of a snow clearing blade which is kept in a lowered position by a compressed gas accumulator communicating with one or two hydraulic cylinders connected between the snow clearing blade and a supporting frame therefor which is secured to a tractor. When the force exerted by said blade as it encounters an obstacle on a road exceeds the resistance of the accumulator, the pistons of the two cylinders are moved to supply hydraulic fluid under pressure to a hydraulic ram for lifting the blade.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: March 23, 1982
    Inventor: Andrea Pelazza