Patents by Inventor Max E. Butterfield

Max E. Butterfield 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).

  • Seat cover
    Patent number: 4103968
    Abstract: A seat cover apparatus includes a seat back cover portion, and a seat bottom cover portion, each defining in free form a plurality of elongated ribs positioned to seat generally within respective depressions of the seat back portion and seat bottom portion.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: August 1, 1978
    Assignee: Caterpillar Tractor Co.
    Inventors: Max E. Butterfield, John Molnar
  • Door latch having three-way actuation means
    Patent number: 4072331
    Abstract: A latch is provided for a door of a cab of a vehicle, such as a track loader, or the like. The latch is provided with external actuating means, internal actuating means and a third override actuating means, the third override actuating means being operative even though either or both of the internal and external actuating means are inoperative.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: February 7, 1978
    Assignee: Caterpillar Tractor Co.
    Inventors: Max E. Butterfield, Robert M. Alt, James E. March
  • Door holding apparatus
    Patent number: 4062577
    Abstract: A door holding apparatus has rotatable and pivotal holding means that is spring biased for contacting a catch and is positioned generally along a plane of an adjacent structure in a stored position and contacting and maintaining a door at a preselected location at a door holding position.
    Type: Grant
    Filed: December 3, 1976
    Date of Patent: December 13, 1977
    Assignee: Caterpillar Tractor Co.
    Inventors: Max E. Butterfield, Robert M. Alt, Sr.