Patents by Inventor David B. Gregory

David B. Gregory 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).

  • Publication number: 20090032206
    Abstract: Surfactant penetrant treating solutions and their use in the manufacture of paper products. The surfactant penetrant treating solutions include two types. The first type is an enzymatic surfactant penetrant treating solution, and the second type is a defoaming surfactant penetrant treating solution. The solutions may be used to break down recyclable paper products for use as feedstock in paper manufacturing processes. The solutions may also be used to clean the internal and external components of machinery in a paper manufacturing line.
    Type: Application
    Filed: September 13, 2006
    Publication date: February 5, 2009
    Inventor: David B. Gregory
  • Patent number: 7264009
    Abstract: A cleaning apparatus is provided for cleaning an inner surface of a container. A spray head is arranged for operable fluid communication with a fluid pump and has a nozzle configured to disperse liquid in a mist. A mount carries the spray head and is removably supportable on a container having an inner surface to be cleaned. When removably supported on a container, the mount supports the spray head in a position within the container where the spray head can coat the inner surface of the container with mist.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: September 4, 2007
    Inventor: David B. Gregory
  • Patent number: 7159598
    Abstract: A method, system and apparatus for cleaning a tank through the use of a pair of spray heads arranged in operable communication with a pump via a pair of hose lines. One of the spray heads is operable to disperse a heated mist of cleaning solution, while the other spray head is operable to dispense a jet stream of the cleaning solution. The spray heads can be arranged in a closed loop, recirculating flow of the cleaning solution between the pump and the spray heads, or an open loop. Each hose line has a valve to control the flow of the cleaning solution therethrough so that the spray heads can operate independently from one another.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: January 9, 2007
    Assignee: ReNew Systems, Inc.
    Inventor: David B. Gregory
  • Patent number: 5743984
    Abstract: A portable liquid containment has an endless containment wall surrounding a liquid containment area. To form the containment a top layer of elastomeric polymer compound is formed to the shape of the containment wall and containment area and is reinforced with woven fabric to provide a reinforced, liquid-impervious, seamless and foldless top membrane. A bottom layer of the same elastomeric polymer compound is applied to the inverted top layer and in curing unites with the underside of the top membrane while the top layer is inverted.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: April 28, 1998
    Assignee: ReNew Roof Technologies, Inc.
    Inventors: David B. Gregory, Dan A. Oliver
  • Patent number: 5567259
    Abstract: A portable liquid spill containment has an endless containment wall fabricated from closed-cell foam that encircles a spill containment area and has an elastic memory that enables the material to recover its shape fully after each of repeated deformations. A top layer of elastomeric polymer compound is formed to the shape of the containment wall and is reinforced with woven fabric to provide a reinforced, liquid-impervious, seamless and foldless top membrane that lines the containment area and extends up and around the containment wall. A bottom layer of the same elastomeric polymer compound is united to the underside of the top membrane to encapsulate the containment wall therebetween. In use, the containment is positioned in an area where liquid to be contained is being handled. Wheeled vehicles, such as fuel delivery trucks, may enter the containment area simply by driving over the resiliently deformable containment wall. Any spills are contained within the confines of the containment wall.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: October 22, 1996
    Assignee: ReNew Roof Technologies, Inc.
    Inventors: David B. Gregory, Dan A. Oliver
  • Patent number: 5464492
    Abstract: A portable liquid spill containment has a composite base sheet that is formed by spraying a base layer of curable elastomeric polymer compound onto a non-adherent transfer surface. Before the compound cures, a sheet of woven reinforcement fabric is applied to the base layer. An endless tubular containment wall is mounted on the base sheet adjacent its perimeter to isolate a containment area. The containment wall is fabricated of elastic, closed-cell foam which has a memory that enables the material to recover its shape fully after each of repeated deformations. A final top skin layer of the curable elastomeric polymer compound is applied to the base sheet and containment wall to unite them and to develop a liquid-impervious, seamless membrane or cover extending from the containment area up and around the containment wall. In use, the containment is positioned in an area where liquid to be contained is being handled.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: November 7, 1995
    Assignee: Renew Roof Technologies Inc.
    Inventors: David B. Gregory, Dan A. Oliver
  • Patent number: 5392583
    Abstract: A method of restoring lapped metal roofs of, for example, steel or aluminum, and consisting of side-by-side panels having side and end edges which overlap to form edge joints, wherein the terminal edge of one panel is an exposed edge which extends over and overlies the edge of an adjacent panel to form an elongated joint, and wherein fasteners extend through the lapped panels to secure the panels together and in place. The method involves applying a flexible, formable rubber to cover the exposed terminal edges of the panels along their lengths. The rubber strips adhere to the panels and are stretchable with temperature-induced expansion and contraction of the panels. Similar strips are applied over all exposed fasteners, and then a substantially non-elastic asphaltic coating is applied over the strips and roof panels to bond to each. With temperature-induced relative movement of the roof panels, the coating cracks and separates and moves with the elastic strips as they stretch.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: February 28, 1995
    Assignee: Gregory Construction Company
    Inventor: David B. Gregory