Patents by Inventor R. F. Mulvany, Jr.

R. F. Mulvany, 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).

  • System and method for heating and forming thermoplastic material
    Patent number: 4092390
    Abstract: A system and method for heating thermoplastic material and forming elongated and involute thermoplastic articles from the thermoplastic material is disclosed. Means are provided for controllably heating a sheet of thermoplastic material to form preselected temperature gradients throughout the sheet of thermoplastic material. Means are further provided for planarly supporting the heated sheet of thermoplastic material allowing for transverse motion of the heated sheet of thermoplastic material at the center thereof and further allowing for controlled slippage of the heated sheet of thermoplastic material toward said center thereof relative to the planar support means. Means are also provided for transversely forming a heated sheet of thermoplastic material into the shape of an elongated or involute plastic article.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: May 30, 1978
    Inventor: R. F. Mulvany, Jr.
  • Method for forming involute plastic articles from thermoplastic sheet material
    Patent number: 4088718
    Abstract: A method for forming elongated and involute thermoplastic articles is disclosed. Means are provided for controllably heating a sheet of thermoplastic material to form preselected temperature gradients throughout the sheet of thermoplastic material. Means are further provided for planarly supporting the heated sheet of thermoplastic material allowing for transverse motion of the heated sheet of thermoplastic material at the center thereof and further allowing for controlled slippage of the heated sheet of thermoplastic material toward said center thereof relative to the planar support means. Means are also provided for transversely forming a heated sheet of thermoplastic material into the shape of an elongated or involute plastic article. A plug is used to extend the heated sheet of thermoplastic material into an elongated conical shaped piece.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: May 9, 1978
    Inventor: R. F. Mulvany, Jr.
  • Apparatus for forming plastic articles
    Patent number: 4047869
    Abstract: A system and method for forming elongated and involute thermoplastic articles is disclosed. Means are provided for controllably heating a sheet of thermoplastic material to form preselected temperature gradients throughout the sheet of thermoplastic material. Means are further provided for planarly supporting the heated sheet of thermoplastic material allowing for transverse motion of the heated sheet of thermoplastic material at the center thereof and further allowing for controlled slippage of the heated sheet of thermoplastic material toward said center thereof relative to the planar support means. Means are also provided for transversely forming a heated sheet of thermoplastic material into the shape of an elongated or involute plastic article. A plug is used to extend the heated sheet of thermoplastic material into an elongated conical shaped piece.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: September 13, 1977
    Inventor: R. F. Mulvany, Jr.