Patents by Inventor Dennis Hoffmann, Sr.

Dennis Hoffmann, Sr. 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: 7470339
    Abstract: A repair device which includes an intermittent coating of PSA on a first side of a sheet of release paper. The cured PSA may be easily transferred to a surface by pressing the release paper against the surface thereby effectively transferring the intermittent coating of PSA to the surface. The improved repair device is useful for repairing delaminated or detached wallpaper; holding wall patch repair devices in place during the application of spackling or repair compound and holding door hinges in place during the installation thereof.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: December 30, 2008
    Inventors: Dennis Hoffmann, Sr., Ray Hubert
  • Patent number: 6684586
    Abstract: A strip of polymer material is used as a corner bead or drywall tape. In a preferred application, the location, i.e. a joint, where two pieces of drywall meet are sprayed with an adhesive and the strip is put in place over the joint. Then, drywall compound is placed over the strip and finished by a drywall finisher. Perforations, depressions and knurling on the strip allow drywall compound to form, when dry, a mechanical bond to the strip at the joint. The material used to make the strip is preferably a mineral filled polymer, such as talc-filled polypropylene, which is inexpensive and lightweight. The adhesive applied to the joint is preferably one which is specially formulated to bond to polypropylene. The strip is initially extruded into a flat form and a crease is imparted to the center of the strip. This allows the strip to be carried in a compact, rolled form.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: February 3, 2004
    Assignee: Pro Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 6627292
    Abstract: A surface repair patch for closing an opening around a fixture which is adjacent to or protrudes from a surface is provided. The surface repair patch comprises a sheet having a plurality of openings which extend from the first side to the second side of the sheet. The sheet supports, positions, and reinforces a curable repair compound on a surface before the repair compound is cured. The sheet includes a removable first section which has a border defined by a first line of holes. The first line of holes is configured such that the removable first section may be removed from the sheet by applying pressure to the removable first section. The sheet of the repair patch may further include a removable second section having a border defined by a second line of holes which facilitate removal of the removable second section from the sheet. The sheet may also include a third line of holes which extend from the border of the removable first section to the periphery of the sheet.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: September 30, 2003
    Assignee: Pro Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 6317995
    Abstract: A combination shield and template for covering an electrical junction box disposed in a wall during the application of wallpaper to the wall is shown and described. The shield/template includes a rectangular plate having an outer periphery disposed in matching registry with or just inside the outer periphery of the junction box. The rear side of the plate faces the junction box and includes at least one aperture for accommodating electrical components therein. The front side of the plate includes a domed cover for covering the aperture or apertures to protect the electrical components accommodated therein from being coated or engaged with wallpaper glue. The front side of the plate further comprises a guide that extends around the periphery of the plate that permits the worker installing the wallpaper to accurately cut the paper after it has been applied to the wall and over the plate which ensures an accurate cut in matching registry with the junction box or disposed just inside the junction box.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: November 20, 2001
    Assignee: Pro Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 6231949
    Abstract: An improved surface repair assembly for repairing a damaged portion of an exposed surface of is provided. The surface repair assembly includes a surface repair patch and a curable surface repair compound. The surface repair patch comprises a sheet which is formed from a plastically deformable inelastic polymeric material. The sheet has a plurality of openings which extend from the first side to the second side of the sheet. The openings are arranged about the sheet so that a network of strips of polymeric material is formed. Each of the strips is capable of being plastically deformed in any direction so that the sheet may be shaped to correspond to the contour of the surface being repaired. The sheet supports, positions, and reinforces the curable repair compound on the surface before the repair compound is cured. In one version of the invention, the second side of the repair patch includes an adhesive for affixing the patch to the surface to be repaired.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: May 15, 2001
    Assignee: Pro Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 5925204
    Abstract: An improved method is provided for repairing damaged portions of an exposed surface of wallboard.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: July 20, 1999
    Assignee: ProPatch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 5620768
    Abstract: An improved multi-layer repair patch is provided. The patch has general repair applications including uses on drywall and automobile bodies. The preferred embodiment includes a three layer patch including an inner mesh, a middle reinforcing sheet and an outer mesh. No glue or adhesive needs to be applied to the middle sheet. The inner surface of the inner mesh carries an adhesive coating and the inner surface of the outer mesh carries an adhesive coating. The inner mesh is attached to the surface under repair and the outer mesh secures the middle sheet between the two mesh structures. In the preferred embodiment, the middle sheet is perforated and the perforated middle sheet, in combination with the inner and outer mesh structures enables liquified bonding material to migrate through the patch during the repair process.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: April 15, 1997
    Assignee: Pro Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 5298099
    Abstract: The present invention is directed to a contourable surface repair compound matrix. Such a matrix is directed to apparatus for reinforcement and positioning of the repair compound and comprises a mesh-like structure including a plurality of deformable contour modules, preferably in the form of diamond-shaped elements, to form a sheet-like structure which is readily adaptable to be formed in a variety of stable formats. Such contourable surface repair compound matrix is configured as a sheet having at least one substantially planar surface which is adapted to receive an adhesive thereon, and further includes adhesive disposed onto such side of the sheet for securing the sheet to the surface to be repaired, in order to form a firm anchor for the support of the repair compound to be applied thereto.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: March 29, 1994
    Assignee: Pro Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 4835925
    Abstract: The present invention is directed to an improved flexible corner bead strip usable for reinforcing a drywall corner. The corner bead strip comprises first and second plastic strips each of which has a substantial longitudinal dimension and corresponding with the length of the drywall corner to be reinforced. Each of the first and second plastic strips also has a transverse dimension which defines a corner line formed from the respective central and abutting edges thereof. A flexible joint is disposed at the respective central and abutting edges of the first and second plastic strips forming a corner line. The corner line functions to substantially flexibly secure the first and second plastic strips together and permits the first and second plastic strips to be bent at an angle corresponding with the angle of the drywall corner for securement thereto, thereby to reinforce the drywall corner. An adhesive layer is also disposed on at least one side of the first and second plastic strips.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: June 6, 1989
    Assignee: PRO Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 4707391
    Abstract: The improved vehicle body surface repair patch assembly of the present invention is suitable for use in conjunction with a vehicle body surface repair compound, and includes a thin and relatively rigid plate which may be of metal or plastic and which is perforated to receive in such perforations the vehicle body surface repair compound to provide substantial thickness and accordingly enhanced strength to the repair patch. Adhesive coating means are disposed on the back surface of the perforated sheet, and mesh means preferably formed of fiberglass mesh are secured to the front surface of the perforated plate to receive, to support and to hold the vehicle body surface repair compound, thereby to provide a matchingly contoured surface with that of the vehicle body surface to be repaired.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: November 17, 1987
    Assignee: Pro Patch Systems, Inc.
    Inventor: Dennis Hoffmann, Sr.
  • Patent number: 4135017
    Abstract: An improved laminate patch for repair of an opening in the facing surface of an interior wall or in a hollow door surface and having a thin, relatively rigid, and a non-combustible plate disposable over such opening, adhesive means applied to such plate at one side thereof for holding the plate in intimate proximity to the surface, and plate cover means applied to the opposite side of and covering such plate to form a smooth and substantially planar configuration with the wall surface.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: January 16, 1979
    Inventor: Dennis Hoffmann, Sr.