Patents by Inventor Francis J. Roetzler

Francis J. Roetzler 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: 4428409
    Abstract: A truncated generally conical or tapered member is mounted on a movable ramhead of a hydraulically operated log splitter. A wood splitting wedge is mounted on the frame of the log splitter opposite the tapered member of the ramhead such that a block of wood may be placed between the ramhead and wedge. The narrow end of the truncated conical member is a size to engage and center the log and retain the log from lateral and vertical movement as the log is split. The tapered member has a taper selected to insure that the end of the member will penetrate the wood at a controlled rate as the splitting force of the ramhead increases. The time element, established by the controlled penetration rate, is of primary importance. Should an operator inadvertently have a portion of his hand, between the log's end and ram face, the time element allows for removal of the operator's hand before it would be crushed between the log and ram face.
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: January 31, 1984
    Inventor: Francis J. Roetzler