Patents by Inventor Robert J. Tweedy, Jr.

Robert J. Tweedy, Jr. 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).

  • Ultraviolet curing system including supplemental energy source
    Patent number: 8601715
    Abstract: Machines and methods for curing ultraviolet (UV)-curable coating materials. In one embodiment, the machine includes a UV radiation source having one or more lamps partially enclosed within a shroud of a curing head. The machine may further include a supplemental energy source located outside of the shroud. The supplemental energy source may illuminate an uncured area of the floor coating material that is beyond the curing head. In some embodiments, the supplemental energy source may reduce or prevent the partial curing of the coating material outside of the curing head resulting from stray UV energy.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: December 10, 2013
    Assignee: Tennant Company
    Inventors: Robert J. Tweedy, Jr., Christopher B. Adams, Kevin K. Hobbie, Vikki K. Young
  • ULTRAVIOLET CURING SYSTEM INCLUDING SUPPLEMENTAL ENERGY SOURCE
    Publication number: 20100242298
    Abstract: Machines and methods for curing ultraviolet (UV)-curable coating materials. In one embodiment, the machine includes a UV radiation source having one or more lamps partially enclosed within a shroud of a curing head. The machine may further include a supplemental energy source located outside of the shroud. The supplemental energy source may illuminate an uncured area of the floor coating material that is beyond the curing head. In some embodiments, the supplemental energy source may reduce or prevent the partial curing of the coating material outside of the curing head resulting from stray UV energy.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 30, 2010
    Inventors: Robert J. Tweedy, JR., Christopher B. Adams, Kevin K. Hobbie, Vikki K. Young
  • Urethane resins
    Patent number: 6878794
    Abstract: Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can include one or more property modifiers. The compositions are useful in the formation of crosslinked copolymers, especially with epoxy resins. The resulting copolymers are useful in the formation of coatings.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: April 12, 2005
    Assignee: Tennant Company
    Inventors: Joseph S. Keute, Anne-Marie Thunnissen, Robert J. Tweedy, Jr.
  • Urethane resins
    Patent number: 6465598
    Abstract: Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can include one or more property modifiers. The compositions are useful in the formation of crosslinked copolymers, especially with epoxy resins. The resulting copolymers are useful in the formation of coatings.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: October 15, 2002
    Assignee: Tennant Company
    Inventors: Joseph S. Keute, Anne-Marie Thunnissen, Robert J. Tweedy, Jr.
  • Urethane resins
    Patent number: 6218500
    Abstract: Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can include one or more property modifiers. The compositions are useful in the formation of crosslinked copolymers, especially with epoxy resins. The resulting copolymers are useful in the formation of coatings.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: April 17, 2001
    Assignee: Tennant Company
    Inventors: Joseph S. Keute, Anne-Marie Thunnissen, Robert J. Tweedy, Jr.