Patents by Inventor William C. Zimmerman

William C. Zimmerman 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).

  • High efficiency particulate air rated vacuum bag media and an associated method of production
    Patent number: 7115151
    Abstract: A vacuum bag media and associated method of production, which includes a first layer that includes an expanded polytetrafluoroethylene membrane and at least one second layer that includes a first component having a first melting point and a second component having a second melting point that is higher than the first melting point, wherein the first layer is attached to the at least one second layer. The second layer can include cellulose material, spunbond, nonwoven fabric, and a thermal bond, nonwoven fabric. Attachment of the first layer of material to the at least one second layer of material can occur through thermobonding, e.g., heated gas, infrared heat and heated calender rolls. The application of adhesives and the use of ultrasonic energy can also bond the layers together. Approximately five percent (5%) to fifty percent (50%) of the first component can be selectively melted for superior airflow.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: October 3, 2006
    Assignee: BHA Group
    Inventors: Alan Smithies, William C. Zimmerman
  • High efficiency particulate air rated vacuum bag media and an associated method of production
    Patent number: 6872233
    Abstract: A vacuum bag media and associated method of production, which includes a first layer that includes an expanded polytetrafluoroethylene membrane and at least one second layer that includes a first component having a first melting point and a second component having a second melting point that is higher than the first melting point, wherein the first layer is attached to the at least one second layer. The second layer can include cellulose material, spunbond, nonwoven fabric, and a thermal bond, nonwoven fabric. Attachment of the first layer of material to the at least one second layer of material can occur through thermobonding, e.g., heated gas, infrared heat and heated calender rolls. The application of adhesives and the use of ultrasonic energy can also bond the layers together. Approximately five percent (5%) to fifty percent (50%) of the first component can be selectively melted for superior airflow.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: March 29, 2005
    Assignee: BHA Technologies, Inc.
    Inventors: Alan Smithies, William C. Zimmerman