Patents by Inventor Roger R. Havner

Roger R. Havner 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: 4455904
    Abstract: A safety attachment for use with cutting apparatus having a cutting member adapted to reciprocate particularly with respect to a fixed frame structure including a support bar mounted for movement with the cutting apparatus and the cutting apparatus having successive cutting positions so that the support bar has successive work positions, at least one bell crank having one end pivotally coupled to the support bar, having its fulcrum provided with a connecting link for fixedly positioning the fulcrum in spaced relation from a reference point on the cutting apparatus, and having the other end of the bell crank free and containing an aperture therein, a working rod threaded at one end and threadedly engaging a coupling link and an intermediate portion proximate the other end of the working rod adjustably engaging in slidable relation with a support rod having a pivot coupled to said aperture, and rabbet holder means being supported in a transverse slot in a working area and having a linking coupling between the r
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 26, 1984
    Inventors: Charles W. Havner, Roger R. Havner