Patents by Inventor Sprague Benjamin Mackenzie

Sprague Benjamin Mackenzie 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).

  • Engine blade containment shroud using quartz fiber composite
    Patent number: 6979172
    Abstract: An engine fan containment shroud including a containment structure composed of a composite material including a reinforcing fiber having an elongation to break of at least about 3.6%. The preferred fiber is a quartz fiber having an elongation to break of at least about 5%. Additionally or alternatively, the reinforcing fiber, in particular quartz fiber, has a hardness of at least about 4 on the Mohs scale, as measured on bulk material, which resists cutting by an impacting object. The composite material and specifically an epoxy/quartz fiber composite provides for weight reduction while providing fan blade containment without loss of structural integrity and with improved resistance to impact and puncture.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: December 27, 2005
    Assignee: Saint-Gobain Ceramics & Plastics, Inc.
    Inventor: Sprague Benjamin Mackenzie