Patents Assigned to Caldwell Design and Fabrication, L.L.C.
  • Mandrel-assisted resin transfer molding process employing resin outflow perimeter channel between male and female mold elements
    Patent number: 6929770
    Abstract: A mandrel-assisted resin transfer molding process and apparatus therefor provides a generally continuous, narrow annular channel between the perimeter of an inner male mold element and an outer female mold element. This channel allows air, heat and vapor to evenly escape and resin to outflow from the mold cavity everywhere around the edge of the part being molded. A very thin resin band forms in the channel is easily trimmed away, leaving the article completely finished on both sides and having a well defined edge that does not require shaping.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: August 16, 2005
    Assignee: Caldwell Design and Fabrication, L.L.C.
    Inventor: James D. Caldwell, Jr.
  • Mandrel-assisted resin transfer molding process employing resin outflow perimeter channel between male and female mold elements
    Publication number: 20040047934
    Abstract: A mandrel-assisted resin transfer molding process and apparatus therefor provides a generally continuous, narrow annular channel between the perimeter of an inner male mold element and an outer female mold element. This channel allows air, heat and vapor to evenly escape and resin to outflow from the mold cavity everywhere around the edge of the part being molded. A very thin resin band forms in the channel is easily trimmed away, leaving the article completely finished on both sides and having a well defined edge that does not require shaping.
    Type: Application
    Filed: September 5, 2003
    Publication date: March 11, 2004
    Applicant: Caldwell Design and Fabrication, L.L.C.
    Inventor: James D. Caldwell
  • Mandrel-assisted resin transfer molding process employing resin outflow perimeter channel between male and female mold elements
    Publication number: 20020145218
    Abstract: A mandrel-assisted resin transfer molding process and apparatus therefor provides a generally continuous, narrow annular channel between the perimeter of an inner male mold element and an outer female mold element. This channel allows air, heat and vapor to evenly escape and resin to outflow from the mold cavity everywhere around the edge of the part being molded. A very thin resin band forms in the channel is easily trimmed away, leaving the article completely finished on both sides and having a well defined edge that does not require shaping.
    Type: Application
    Filed: April 6, 2001
    Publication date: October 10, 2002
    Applicant: Caldwell Design and Fabrication, L.L.C.
    Inventor: James D. Caldwell