Patents by Inventor Christopher Madigan

Christopher Madigan 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).

  • Shaft seal having integrated removal feature
    Patent number: 8011671
    Abstract: A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facilitate the removal of the seal assembly from a bore in which the seal assembly is installed.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: September 6, 2011
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Christopher Madigan
  • SHAFT SEAL HAVING INTEGRATED REMOVAL FEATURE
    Publication number: 20090189357
    Abstract: A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facilitate the removal of the seal assembly from a bore in which the seal assembly is installed.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Inventor: Christopher Madigan
  • Shaft seal having independent sealing lips
    Patent number: 7464942
    Abstract: A shaft seal includes a rigid annular casing to which a body of elastomeric seal material is molded. At least one elastomeric seal lip is formed of the elastomeric material. A PTFE element is bonded to the elastomer material and is formed with an undercut overlying the PTFE element to provide a flex hinge to the PTFE element that is isolated and independent from a hinge of the elastomeric seal lip.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: December 16, 2008
    Assignee: Federal-Mogulk World Wide, Inc.
    Inventor: Christopher Madigan
  • Shaft seal having integrated removal feature
    Patent number: 7347424
    Abstract: A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facilitate the removal of the seal assembly from a bore in which the seal assembly is installed.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: March 25, 2008
    Assignee: Federal-Mogul Worldwide, Inc.
    Inventor: Christopher Madigan
  • Shaft seal having independent sealing lips
    Publication number: 20060284381
    Abstract: A shaft seal includes a rigid annular casing to which a body of elastomeric seal material is molded. At least one elastomeric seal lip is formed of the elastomeric material. A PTFE element is bonded to the elastomer material and is formed with an undercut that extends beneath the PTFE element to provide a flex hinge to the PTFE element that is isolated and independent from a hinge of the elastomeric seal lip.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 21, 2006
    Inventor: Christopher Madigan
  • Shaft seal assembly with retaining ring and washer
    Patent number: 7147229
    Abstract: A shaft seal assembly (10) features an annular carrier (14), an annular shaft seal element (16) and an annular felt washer (18) in an integral assembly that can be installed in one step using a simple push-on tool. The washer (18) is fixed to the carrier (14), such that the carrier (14), shaft seal element (16) and washer (18) are unitized.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: December 12, 2006
    Assignee: Federal Mogul World Wide Inc.
    Inventor: Christopher Madigan
  • Shaft seal having integrated removal feature
    Publication number: 20060249915
    Abstract: A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facilitate the removal of the seal assembly from a bore in which the seal assembly is installed.
    Type: Application
    Filed: April 27, 2006
    Publication date: November 9, 2006
    Inventor: Christopher Madigan
  • Shaft seal assembly with retaining ring and washer
    Publication number: 20050200082
    Abstract: A shaft seal assembly (10) features an annular carrier (14), an annular shaft seal element (16) and an annular felt washer (18) in an integral assembly that can be installed in one step using a simple push-on tool. The washer (18) is fixed to the carrier (14), such that the carrier (14), shaft seal element (16) and washer (18) are unitized.
    Type: Application
    Filed: March 15, 2004
    Publication date: September 15, 2005
    Inventor: Christopher Madigan