Patents by Inventor Michael F. Whelihan

Michael F. Whelihan 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).

  • Mold for molding a resin to form a complex article
    Patent number: 5449285
    Abstract: The mold (10) for forming an article includes a first mold member (16) with a first mold surface (24) and a second mold member (18) with a second mold surface (26). When the mold (10) is closed, the first and second mold surfaces (24) and (26) form a mold cavity (28). Lances (58) are forced into the mold cavity (28) by linear actuators (60) to pierce an article (12) and then withdrawn from the mold chamber. Each Lance (58) allows gas under pressure to escape from the article (12) through the clearance between the lance and the bore (56) in which the lance is mounted. Relieving gas pressure in the article (12) allows the mold (10) to be opened without distortion of the article and shortens mold cycle time.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: September 12, 1995
    Assignee: Davidson Textron, Inc.
    Inventors: Alan L. Choiniere, Michael F. Whelihan