Patents Assigned to Tri Tractor Manufacturing Co., Inc.
  • Patent number: 4040497
    Abstract: The tractor frame and chassis includes a recessed front portion which will accommodate an implement such as a mower attachment over which the tractor is driven for attachment and detachment of the implement. An implement frame on the front is raised and lowered by means of an electric motor and pivoted frame members. An internal combustion engine mounted on the rear of the tractor drives large rear wheels mounted on individual off-set axles extending from an individual axle housing which is driven from a center transmission. A power take-off from the engine drives a belt which extends forwardly around idler pulleys having tension adjustment thereon. The engine drives a hydraulic pump which operates a hydraulic motor and transmission arrangement mounted on the chassis frame generally beneath the seat of the tractor. This provides stability and permits the use of rear mounted implements such as plows as well as front mounted implements such as plows or mowers.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: August 9, 1977
    Assignee: Tri Tractor Manufacturing Co., Inc.
    Inventor: Harold D. Thomas
  • Patent number: D282153
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: January 14, 1986
    Assignee: Tri-Tractor Manufacturing Co., Inc.
    Inventors: Robert H. Wallace, Jerry R. Gravitt