Patents by Inventor Dennis P. Rolph

Dennis P. Rolph 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: 5743061
    Abstract: A wall anchor having a first inclined plane secured to a second inclined plane by a connector. The connector is resilient to allow the inclined planes to move relative to one another. The inclined planes are oriented opposite one another, in a manner which increases their combined height as the inclined planes slide in a first direction relative to one another, and which decreases their combined height as the inclined planes slide in a second direction relative to one another. A retainer is secured to the first inclined plane and is used to insert the inclined planes into a hole in a wall. After the inclined planes have been inserted, the retainer is withdrawn slightly, which causes the inclined planes to slide relative to one another and increase their combined height to wedge the inclined planes against an interior surface of the hole. In this manner, a retainer may be securely and manually anchored to a wall.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: April 28, 1998
    Assignee: Diversified Fastening Systems, Inc.
    Inventor: Dennis P. Rolph
  • Patent number: 5711043
    Abstract: A tool adapted for use with a drill for installing screw anchors in concrete or masonry walls or the like having a sleeve type body, a bit holder slidably located in the body, a drill bit with a handle secured in the bit holder, a coil spring seated on a collar of a bit holder and extending around the bit, a set screw to retain the drill bit in the bit holder and also to serve as a means to advance and retract the drill bit, a cutout comprised of a longitudinal slot, a retainer notch, and at least one depth notch, and a driver seat capable of retaining a driver bit and further capable of releasable attachment to the sleeve type body. The attachment cap allows ready conversion of the tool from a drill to a driver and back again.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: January 27, 1998
    Assignee: Diversified Fastening Systems, Inc.
    Inventors: Trevor J. Crawford, Dennis P. Rolph
  • Patent number: 5363987
    Abstract: A vending machine is designed to dispense multiple copies of a publication one at a time. The machine includes a storage member adapted to temporarily store multiple copies of a publication in a face-to-face orientation, a suction assembly formed of at least one suction cup that is adapted to seize and transport the front most copy of the publication to a dispensing position, a valve assembly associated with the suction cup to cause the cup to vent when in a dispensing position to dispense such copy into a delivery chute, and a slidable backplate biased to continuously urge the remaining copies of the publication forward.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: November 15, 1994
    Assignee: Seven, Ltd.
    Inventors: Danny E. Crawford, Gene A. Hall, Dennis A. Jendro, Dennis P. Rolph, Danny L. Nelson, Paul D. Elst, Gregory E. Erlandson, Jack T. Mowry, Robert L. Neiss, Craig K. Loebig, Richard A. Helms