Patents by Inventor Dale P. Major

Dale P. Major 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).

  • Roofing shingle
    Patent number: 5052162
    Abstract: This invention provides a process which automatically and in a continuous and uninterrupted manner makes a roofing shingle by applying granules to the top surface of an asphalt impregnated glass mat, laminating a narrow strip of bituminous coated glass mat to the bottom side of a coated glass mat, said narrow strip being cut from said impregnated glass mat and being inverted before said laminating step and cutting the laminated product to produce a laminate having cut-out areas between the remaining tabs. The final shingle is made from a single glass mat which is processed into a two level shingle, each level being made of a portion of the original glass mat with each level having exposed granules.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: October 1, 1991
    Assignee: The Celotex Corporation
    Inventors: Arthur B. Bush, Dale P. Major
  • Trilaminated roofing shingle
    Patent number: 4869942
    Abstract: This invention provides a process and apparatus which automatically and in a continuous and uninterrupted manner laminates a narrow strip of bituminous coated glass mat to the bottom side of a coated glass mat, cuts the laminated product to produce a laminate having cut-out areas between remaining tabs and then adheres thin strips of coated glass mat across the tabs to underlie the tabs and the cut-out areas. The final shingle is made from a single glass mat which is processed into a three level shingle, each level being made of a portion of the original glass mat.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: September 26, 1989
    Assignee: The Celotex Corporation
    Inventors: Robert E. Jennus, Dale P. Major
  • Method of making an offset laminated roofing shingle
    Patent number: 4775440
    Abstract: This invention provides a process and apparatus which automatically and in a continuous and uninterruped manner laminates a narrow strip of bituminous coated glass mat to the bottom side of a coated glass mat, cuts the laminated product to produce a laminate having cut-out areas between remaining tabs and then adheres thin strips of coated glass mat across the tabs to underlie the tabs and the cut-out areas. The final shingle is made from a single glass mat which is processed into a three level shingle, each level being made of a portion of the original glass mat.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: October 4, 1988
    Assignee: The Celotex Corporation
    Inventors: Robert E. Jennus, Dale P. Major
  • Apparatus for making an offset laminated roofing shingle
    Patent number: 4729814
    Abstract: This invention provides a process and apparatus which automatically and in a continuous and uninterrupted manner laminates a narrow strip of bituminous coated glass mat to the bottom side of a coated glass mat, cuts the laminated product to produce a laminate having cut-out areas between remaining tabs and then adheres thin strips of coated glass mat across the tabs to underlie the tabs and the cut-out areas. The final shingle is made from a single glass mat which is processed into a three level shingle, each level being made of a portion of the original glass mat.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: March 8, 1988
    Assignee: The Celotex Corporation
    Inventors: Robert E. Jennus, Dale P. Major