Patents by Inventor Craig D. Calfee

Craig D. Calfee 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).

  • Method of manufacturing a composite bicycle frame
    Patent number: 5160682
    Abstract: A bicycle frame manufactured of one or more continuous fiber composite tubes, wherein the tubes are joined to one another without lugs by overlaying the joints with resin impregnated continuous fiber composite material and clamping the joints in static pressure molds. Gussets are integrally formed as part of the joints. One or more of the tubes may be metal, preferably, titanium. The bicycle frame is provided with metal drop outs which are also preferably titanium.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: November 3, 1992
    Inventor: Craig D. Calfee
  • Composite bicycle frame
    Patent number: 5116071
    Abstract: A bicycle frame manufactured of one or more continuous fiber composite tubes, wherein the tubes are joined to one another without lugs by overlaying the joints with resin impregnated continuous fiber composite material and clamping the joints in static pressure molds. Gussets are integrally formed as part of the joints. One or more of the tubes may be metal, preferably titanium. The bicycle frame is provided with metal drop outs which are also preferably titanium.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: May 26, 1992
    Inventor: Craig D. Calfee
  • Composite bicycle frame
    Patent number: RE35335
    Abstract: A bicycle frame manufactured of one or more continuous fiber composite tubes, wherein the tubes are joined to one another without lugs by overlaying the joints with resin impregnated continuous fiber composite material and clamping the joints in static pressure molds. Gussets are integrally formed as part of the joints. One or more of the tubes may be metal, preferably titanium. The bicycle frame is provided with metal drop outs which are also preferably titanium.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: September 24, 1996
    Inventor: Craig D. Calfee