Patents by Inventor Ronald A. Bartell

Ronald A. Bartell 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: 4069959
    Abstract: A web steering frame having parallel entering and exiting rollers is supported for pivotal movement on a stationary support frame in a web guide apparatus by a system of pivoted, linear bearings. Each bearing includes a bushing which is movable along a linear guide rod. The bushings are fixed near the rollers where any loads are transmitted to the support frame thereby minimizing steering frame racking. The guide rods are pivotally connected to the support frame. The bearings are oriented so that the direction of linear freedom of each is orthogonal to a line passing through the bearing pivot and the desired steering frame pivot. The linear bearings effectively constrain the steering frame to pivotal motion about the steering frame pivot. Their use gives rise to significant reductions in cost and complexity over conventional web guide apparatus using precision arcuate guides, links or flexures.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: January 24, 1978
    Assignee: Butler Automatic, Inc.
    Inventors: Ronald A. Bartell, George F. Corcoran, Donald H. Fuller