Patents by Inventor Robert R. Cantwell

Robert R. Cantwell 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: 5067505
    Abstract: A tent including a shell of flexible tent material which is supported internally of the shell by an internal frame. Waterproof fly panels are integrally attached to the shell on the outside of the shell.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: November 26, 1991
    Assignee: American Recreation Products, Inc.
    Inventors: Robert R. Cantwell, Deborah M. Zumsteg
  • Patent number: 4877044
    Abstract: A tent of the type comprising a fabric shell suppoprted on a skeleton frame having at least two criss-crossing ribs, the ribs having patches of mating halves of a hook-and-loop type fastening material on the portions of the ribs that criss-cross, to releasably attach the ribs at the point where they criss-cross and stabilize the frame.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: October 31, 1989
    Assignee: American Recreation Products, Inc.
    Inventors: Robert R. Cantwell, Raymond F. Hallemann, Deborah M. Zumsteg
  • Patent number: 4827958
    Abstract: A tent comprising a plurality of walls, a roof and a frame system for holding the tent erect. The frame system comprises at least two frame structures, each being of generally inverted U-shape when erect and comprising a pair of substantially rigid poles extending up from the ground adjacent respective walls of the tent and a flexible resilient ridge frame member bent into an arched configuration and having ends telescopically interfitted with the upper ends of the poles. The resilient ridge frame members support the roof of the tent in an arched configuration generally corresponding to the arched configuration of the ridge frame members.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: May 9, 1989
    Assignee: American Recreation Products, Inc.
    Inventors: Robert R. Cantwell, Michael J. Scherer
  • Patent number: 3943953
    Abstract: A tent comprising four walls and a peaked roof, the upper edges of the walls constituting eaves which generally form a rectangle when the tent is erected. The tent further comprises an external frame for holding the tent erect including a pair of eave frame members for attachment to two opposite eaves extending generally parallel to the two eaves on the outside thereof and a pair of poles, one for each of the eave frame members, for supporting the eave frame members to hold the tent erected. Each pole has means at its upper end for connection to the respective eave frame member generally at the center of length of the eave frame member. The external frame also has a ridge frame member extending generally centrally over the roof of the tent from one of the eave frame members to the other. The ridge frame member has means for connection of the center thereof to the peak of the roof.
    Type: Grant
    Filed: August 21, 1974
    Date of Patent: March 16, 1976
    Assignee: Kellwood Company
    Inventors: Robert R. Cantwell, Tom E. Marquart
  • Patent number: D323693
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: February 4, 1992
    Assignee: American Recreation Products, Inc.
    Inventors: Robert R. Cantwell, Deborah M. Zumsteg
  • Patent number: D323869
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: February 11, 1992
    Assignee: American Recreation Products, Inc.
    Inventor: Robert R. Cantwell