Patents by Inventor David Alexander Semple

David Alexander Semple has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for controlling a tractor/baler combination
    Patent number: 6546705
    Abstract: A method of controlling the combination of a baler and a tractor includes the steps of advancing the baler combination through a swath or windrow of biological crop matter with the tractor PTO operating at a generally constant speed to power the baler and the baler operating to take up biological matter while monitoring the flow rate of the biological matter through the baler. A microprocessor compares the assessed flow rate with an optimal flow rate and varies the travel speed of the tractor to maximize the flow rate of crop material through the baler. Preferably, the speed of operation of the tractor is accomplished through changing transmission speeds so that the PTO shaft speed is maintained at a substantially uniform rotational speed. The apparatus provided for carrying out the method of controlling the combination of a tractor and a baler increases the work rate of baling operations.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: April 15, 2003
    Assignee: New Holland North America, Inc.
    Inventors: Andrew James Scarlett, David Alexander Semple, John Charles Lowe, Adrianus Naaktgeboren, Bert J. F. Paquet
  • Method and apparatus for controlling a tractor/baler combination
    Publication number: 20010042362
    Abstract: A method of controlling the combination of a baler and a tractor includes the steps of advancing the baler combination through a swath or windrow of biological crop matter with the tractor PTO operating at a generally constant speed to power the baler and the baler operating to take up biological matter while monitoring the flow rate of the biological matter through the baler. A microprocessor compares the assessed flow rate with an optimal flow rate and varies the travel speed of the tractor to maximize the flow rate of crop material through the baler. Preferably, the speed of operation of the tractor is accomplished through changing transmission speeds so that the PTO shaft speed is maintained at a substantially uniform rotational speed. The apparatus provided for carrying out the method of controlling the combination of a tractor and a baler increases the work rate of baling operations.
    Type: Application
    Filed: May 8, 2001
    Publication date: November 22, 2001
    Applicant: New Holland North America, Inc., a Delaware Corporation
    Inventors: Andrew James Scarlett, David Alexander Semple, John Charles Lowe, Adrianus Naaktgeboren, Bert J.F. Paouet