Patents by Inventor David A. Zinni

David A. Zinni 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).

  • Elastomeric bearing elements for droop stop mechanisms
    Patent number: 7354248
    Abstract: An elastomeric bearing element having an outer race, an inner race, and at least two elastomeric segments secured between the inner and outer races is provided. The elastomeric segments are spaced from one another by a corresponding number of expansion segments. The elastomeric segments provide a first spring rate when a first force applied to the outer race places the elastomeric segments in compression and a second spring rate when a second force applied to the outer race places the elastomeric segments in shear. The second spring rate is lower than the first spring rate.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: April 8, 2008
    Assignee: Sikorsky Aircraft Corporation
    Inventor: David A. Zinni
  • Elastomeric bearing elements for droop stop mechanisms
    Publication number: 20070086894
    Abstract: An elastomeric bearing element having an outer race, an inner race, and at least two elastomeric segments secured between the inner and outer races is provided. The elastomeric segments are spaced from one another by a corresponding number of expansion segments. The elastomeric segments provide a first spring rate when a first force applied to the outer race places the elastomeric segments in compression and a second spring rate when a second force applied to the outer race places the elastomeric segments in shear. The second spring rate is lower than the first spring rate.
    Type: Application
    Filed: October 17, 2005
    Publication date: April 19, 2007
    Inventor: David Zinni