Patents by Inventor Karl I. Cedergren

Karl I. Cedergren 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).

  • Patent number: 4245683
    Abstract: A protective contrivance for a wood splitting machine with a rotatable splitting element and a work-table located under the splitting element. The work-table is provided with a table plate which extends towards and under the splitting element. The splitting element is provided with a screw-like front end with a drill point. A drill point protecting element is arranged which may be swung away from a position, in which one portion of the element prevents the drill point from engaging strange objects, and back to the protective position. Such one portion is during the swinging movement also moved axially away from the tip of the rotatable splitting element. Preferably the protective element is biased to the position in which the protective portion is in the protective position and is provided with a recess, the walls of which surround the tip in the protective position. The protective element extends up through a groove in the table plate from the spring biased swivel arm.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: January 20, 1981
    Inventor: Karl I. Cedergren