Patents by Inventor Walter J. Rohrer

Walter J. Rohrer 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: 4115976
    Abstract: A screed support and method for screeding cement comprises digging a plurality of arranged holes in the bed surface of the area to be cemented. Unsolidified cement is poured into each of the holes, a hollow sleeve is inserted into the wet cement and positioned therein in a substantially vertical orientation, and the cement is cured to a solidified state. A rail support member having a threaded rod and a mating, adjustable collar, is telescopically inserted into each of the sleeves. Screed support rails are connected with each rod, and the elevation and inclination of the same is adjusted in infinitely small increments by manipulating each collar in accordance with the desired, predetermined requirements. Additional unsolidified cement is then poured between the rails, and a self-propelled screeding machine is passed thereover to smoothen and level the uneven free surface of the additional cement.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: September 26, 1978
    Assignee: John Rohrer Contracting Company
    Inventor: Walter J. Rohrer