Patents by Inventor Karl Lewis Lindmark

Karl Lewis Lindmark 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).

  • Rail straightening press
    Patent number: 4077248
    Abstract: A press for straightening a railroad rail formed by the welding of the ends of two rail sections together. The press has a first reciprocatable cage having two opposed rams straddling the rail for straightening the rail in one plane and a second reciprocatable cage having similarly arranged rams extending into the first cage for straightening the rail in a second plane. The cages are connected to suitable power means located remote from the tending side of the press for efficient operation of same.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: March 7, 1978
    Assignee: Chemetron Corporation
    Inventor: Karl Lewis Lindmark