Patents by Inventor James P. Sheahan

James P. Sheahan 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).

  • Leak localizing using a combination of penetrating devices and barriers
    Patent number: 6021617
    Abstract: What is disclosed is a method of localizing leaks in roof structures and novel penetrating devices utilized for that purpose. Also disclosed are methods of manufacturing roof structures and methods of repairing roofs. The penetrating devices also have the capability of leak detection when used in conjunction with a barrier layer in a roof structure.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: February 8, 2000
    Inventor: James P. Sheahan
  • Anti-backout roof fasteners
    Patent number: 5907938
    Abstract: This invention deals with novel devices which are fasteners for roofing assemblies, especially multi-layered roof assemblies. In addition, there is embodied in this invention a device that is not only a fastener, but is also capable of detecting leaks in roofing systems.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: June 1, 1999
    Inventor: James P. Sheahan
  • Weatherable monolithic coverings
    Patent number: 5302457
    Abstract: There is disclosed composites which are comprised of thermoplastic materials and thermoset materials which are fused together.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: April 12, 1994
    Assignee: J. P. Sheahan & Associates
    Inventor: James P. Sheahan
  • Leak localizing using a combination of penetrating devices and barriers
    Patent number: 5212927
    Abstract: What is disclosed is a method of localizing leaks in roof structures and novel penetrating devices utilized for that purpose. Also disclosed are methods of manufacturing roof structures and methods of repairing roofs. The penetrating devices also have the capability of leak detection when used in conjunction with a barrier layer in a roof structure.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: May 25, 1993
    Assignee: J. P. Sheahan Associates, Inc.
    Inventor: James P. Sheahan
  • Method of using a fastener to secure a multiple layered roof, to repair a roof, and to detect leaks in a roof
    Patent number: 5193326
    Abstract: This invention deals with a device which is useful for the securing of roof structures, especially laminar type roof structures wherein an integral, obstensibly waterproof, covering is used as part of the laminar structure. It also deals with a unique method of detecting leaks in roofing structures which allows the location of such leaks with a certain preciseness by using the fastening devices of this invention as points of reference.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: March 16, 1993
    Assignee: J. P. Sheahan & Associates
    Inventor: James P. Sheahan
  • Method for leak detection and non-destructive quality control testing for roofing seams
    Patent number: 5143568
    Abstract: There is disclosed a method of non-destructive quality control testing of seams in roof membranes. The test comprises the use of a double seam concept which forms a pressurizable void, which indicates the degree and extent of bonding of the seams. The test is corralatable to T-pull testing normally used in the laboratory for such testing but has the advantage of being capable of being used on the construction site.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: September 1, 1992
    Assignee: J.P. Sheahan & Associates
    Inventor: James P. Sheahan
  • Processes to manufacture weatherable monolithic coverings, and composites useful therefor
    Patent number: 5093171
    Abstract: A method of seaming polymeric composite pieces to form a unitary cover which is impervious to the weather is disclosed. The method comprises assembling one or more pieces of a fused composite covering having a weatherable side and a non-weatherable, fusible, side to form a narrow seamable opening; fusing a tape over the seamable opening, and then filling the narrow seamable opening with a weatherable caulk to cover any remaining exposed non-weatherable material.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: March 3, 1992
    Assignee: J. P. Sheahan & Associates, Inc.
    Inventor: James P. Sheahan
  • Fastening and leak detector device and method for its use to secure roofs
    Patent number: 5080542
    Abstract: This invention deals with a device which is useful for the securing of roof structures, especially laminar type roof structures wherein an integral, obstensibly waterproof, covering is used as part of the laminar structure. It also deals with a unique method of detecting leaks in roofing structures which allows the location of such leaks with a certain preciseness by using the fastening devices of this invention as points of reference.
    Type: Grant
    Filed: November 24, 1989
    Date of Patent: January 14, 1992
    Assignee: J. P. Sheahan & Associates, Inc.
    Inventor: James P. Sheahan
  • Method of securing multiple layered roof structures
    Patent number: 4924174
    Abstract: A hold down device for multi-layered roofs. The hold down device can be modified to afford a water leak detector. A method of using the devices in securing a multi-layered roof is also disclosed.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: May 8, 1990
    Assignee: J. P. Sheahan Assoicates, Inc.
    Inventor: James P. Sheahan
  • Non-electrical leak detection method
    Patent number: 4748847
    Abstract: A method of detecting leaks in a multi-layered roof system comprising ejecting a tracer gas and a propellant gas under a water-impermeable membrane of a multi-layered roof system and detecting any escape of the tracer gas on the surface of the roof, which detection is indicative of a break or opening in the water-impermeable membrane.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: June 7, 1988
    Inventor: James P. Sheahan
  • Hold down device
    Patent number: 4723109
    Abstract: A hold down device for multi-layered roofs. The hold down device can be modified to afford a water leak detector. A method of using the devices in securing a multi-layered roof is discussed.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: February 2, 1988
    Inventor: James P. Sheahan
  • Roof installation for locating water leakage points
    Patent number: 4110945
    Abstract: A plurality of water detectors are positioned under the water-impermeable membrane of a roof. In the event that the water-impermeable membrane is broken and the roof leaks, the general area of the leak can be determined.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: September 5, 1978
    Assignee: The Dow Chemical Company
    Inventor: James P. Sheahan
  • Roof and method of preparation
    Patent number: 4045934
    Abstract: Ponding is eliminated or substantially reduced on flat roofs by employing a closed cell, thermally insulating foam above the water barrier layer and varying the thickness of the closed cell foam to displace at least a majority of water which might accumulate in areas subject to ponding.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: September 6, 1977
    Assignee: The Dow Chemical Company
    Inventors: James P. Sheahan, Lowell E. Putnam