Patents by Inventor William Sigsworth

William Sigsworth 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: 7704063
    Abstract: A plastic injection mold assembly is disclosed in which an electric servo motor very precisely controls rotational speeds and amounts of torque applied to cores which extend into the mold cavities as the cores are withdrawn from plastic components being molded and simultaneously directs the linear distances which the cores travel during such withdrawal. A method of accomplishing the molding of plastic components in this manner is also disclosed.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: April 27, 2010
    Inventors: Alan A. Petrucci, William Sigsworth
  • Publication number: 20080038394
    Abstract: A plastic injection mold assembly is disclosed in which an electric servo motor very precisely controls rotational speeds and amounts of torque applied to cores which extend into the mold cavities as the cores are withdrawn from plastic components being molded and simultaneously directs the linear distances which the cores travel during such withdrawal. A method of accomplishing the molding of plastic components in this manner is also disclosed.
    Type: Application
    Filed: June 21, 2007
    Publication date: February 14, 2008
    Inventors: Alan Petrucci, William Sigsworth
  • Publication number: 20080029935
    Abstract: A plastic injection mold assembly is disclosed in which an electric servo motor very precisely controls rotational speeds and amounts of torque applied to cores which extend into the mold cavities as the cores are withdrawn from plastic components being molded and simultaneously directs the linear distances which the cores travel during such withdrawal. A method of accomplishing the molding of plastic components in this manner is also disclosed.
    Type: Application
    Filed: June 19, 2007
    Publication date: February 7, 2008
    Inventors: Alan Petrucci, William Sigsworth
  • Publication number: 20040169320
    Abstract: A plastic injection mold assembly is disclosed in which an electric servo motor very precisely controls rotational speeds and amounts of torque applied to cores which extend into the mold cavities as the cores are withdrawn from plastic components being molded and simultaneously directs the linear distances which the cores travel during such withdrawal. A method of accomplishing the molding of plastic components in this manner is also disclosed.
    Type: Application
    Filed: February 28, 2003
    Publication date: September 2, 2004
    Inventors: Alan A. Petrucci, William Sigsworth
  • Patent number: 6655071
    Abstract: A retainer for holding a plurality of waterfowl decoys has at least three arms pivotally mounted on a pin so as to be moveable between a first position in which the arms are aligned parallel to each other for storage and a open position in which the arms are angularly oriented with respect to one another. The device includes a locking pin for fitting into a first set of holes in the three arms for locking the arms in the first position and fitting into a second set of holes in the arms for locking the arms in the second position. The device further includes a moveable post at the end of each arm for retaining a waterfowl decoy and a ratchet engagement between the post and the arm to permit manual movement of the post with respect to the arm to its desired orientation to retain the post in the desired orientation after it has been positioned without requiring the tightening or untightening of screws and the like.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: December 2, 2003
    Inventors: Charles David Barnes, Ellen Marie McLean, John R. Howard, Charles E. Nichols, William Sigsworth
  • Publication number: 20030183734
    Abstract: A retainer for holding a plurality of waterfowl decoys has at least three arms pivotally mounted on a pin so as to be moveable between a first position in which the arms are aligned parallel to each other for storage and a open position in which the arms are angularly oriented with respect to one another. The device includes a locking pin for fitting into a first set of holes in the three arms for locking the arms in the first position and fitting into a second set of holes in the arms for locking the arms in the second position. The device further includes a moveable post at the end of each arm for retaining a waterfowl decoy and a ratchet engagement between the post and the arm to permit manual movement of the post with respect to the arm to its desired orientation to retain the post in the desired orientation after it has been positioned without requiring the tightening or untightening of screws and the like.
    Type: Application
    Filed: September 23, 2002
    Publication date: October 2, 2003
    Inventors: Charles David Barnes, Ellen Marie McLean, John R. Howard, Charles E. Nichols, William Sigsworth