Patents by Inventor David K. Camfield

David K. Camfield 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: 5782540
    Abstract: A plastic wheel assembly comprises a wheel, a hub assembly and a rim having two side walls adopted to hold a tire onto the rim. Preferably the wheel is made of two molded plastic wheel halves, each having a wheel flange extending outwardly from the circumference of the wheel and contacting the rim side walls. The rim fits between the wheel flanges and is preferably made of metal. The wheel halves are preferably riveted to the flanges on the hub assembly. A method of making the wheel assembly involves connecting the first wheel half to the rim and then connecting the second wheel half to the combination of the rim and first wheel half.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: July 21, 1998
    Assignee: Brunswick Corporation
    Inventors: David K. Camfield, Daniel F. Brashear, Robert N. Conn
  • Patent number: 5505493
    Abstract: A bicycle with simulated motorcycle parts includes a shroud attachable to the bicycle. The shroud has a center portion simulating a gas tank and a rear fender portion extending over the rear wheel. The shroud is configured to fit around the seat tube of the bicycle and preferably covers the top tube of the bicycle. In one embodiment, a fairing mounted in front of the handlebars simulates a fairing on a motorcycle. In another embodiment, chrome plated plastic parts are used to simulate a motorcycle engine and a sound system is included that replicates the sound of a motorcycle.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: April 9, 1996
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Daniel G. Hahn, Duane Niemeyer, Daniel F. Brashear, Ricke D. Shamhart
  • Patent number: 5314207
    Abstract: A bicycle with simulated motorcycle parts includes a shroud attachable to the bicycle. The shroud has a center portion simulating a gas tank and a rear fender portion extending over the rear wheel. The shroud is configured to fit around the seat tube of the bicycle and preferably completely covers the top tube of the bicycle. In one embodiment, a fairing mounted in front of the handlebars simulates a fairing on a motorcycle.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: May 24, 1994
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Daniel G. Hahn, Duane Niemeyer, Daniel F. Brashear
  • Patent number: 4762317
    Abstract: A stationary exercise device has an elongated base frame, a seat supported by the base frame adjacent one end and a non-circular upright support adjacent the other end of the frame, and an exercise cycle assembly removably mounted on the support. The device preferably doubles as a rowing machine, the handle bars of the rowing machine serving a dual purpose.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: August 9, 1988
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Daniel F. Brashear, Marion N. Craig
  • Patent number: D342702
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: December 28, 1993
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Duane Niemeyer
  • Patent number: D343599
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: January 25, 1994
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Duane Niemeyer
  • Patent number: D345325
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: March 22, 1994
    Inventors: David K. Camfield, Daniel G. Hahn
  • Patent number: D345725
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: April 5, 1994
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Daniel G. Hahn
  • Patent number: D346138
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: April 19, 1994
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Daniel G. Hahn
  • Patent number: D353638
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: December 20, 1994
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Craig A. Topp
  • Patent number: D364662
    Type: Grant
    Filed: January 5, 1995
    Date of Patent: November 28, 1995
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Jeffrey D. Metcalf
  • Patent number: D367021
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: February 13, 1996
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Daniel F. Brashear
  • Patent number: D368242
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: March 26, 1996
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Daniel F. Brashear
  • Patent number: D373980
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: September 24, 1996
    Assignee: Roadmaster Corporation
    Inventor: David K. Camfield
  • Patent number: D375767
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: November 19, 1996
    Assignee: Roadmaster Corporation
    Inventors: David K. Camfield, Jeffrey D. Metcalf
  • Patent number: D376123
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: December 3, 1996
    Assignee: Roadmaster Corporation
    Inventor: David K. Camfield
  • Patent number: D376337
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: December 10, 1996
    Assignee: Roadmaster Corporation
    Inventor: David K. Camfield
  • Patent number: D376997
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: December 31, 1996
    Assignee: Roadmaster Corporation
    Inventor: David K. Camfield