Patents by Inventor Marc Jenger

Marc Jenger 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).

  • Tool for constructing a pair of races of a bearing
    Patent number: 6698936
    Abstract: A tool for pre-stressing of two races to be welded to one another includes a hub having a cylindrical lateral hub wall and a tubular chuck having a cylindrical lateral chuck wall coaxially received and movable in the lateral hub wall. One of the lateral walls has a cylindrical face of revolution for radially supporting and centering the two races. A first axial abutment is immovable with respect to the chuck and against which a first free axial face is engageable, while a second axial abutment is immovable with respect to the hub and against which a second free axial face is engageable. A coaxial mechanism for axially moving the chuck towards the hub and hence for tightening the second axial abutment axially towards the first axial abutment is provided such that the two races therebetween are tightened against one another until a pre-determined pre-stress value is obtained.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: March 2, 2004
    Assignee: Sagem SA
    Inventors: Hervé Dardelet, Michel Augot, Marc Jenger
  • Tool for constructing a pair of races of a bearing
    Publication number: 20030206673
    Abstract: A tool for pre-stressing of two races to be welded to one another includes a hub having a cylindrical lateral hub wall and a tubular chuck having a cylindrical lateral chuck wall coaxially received and movable in the lateral hub wall. One of the lateral walls has a cylindrical face of revolution for radially supporting and centering the two races. A first axial abutment is immovable with respect to the chuck and against which a first free axial face is engageable, while a second axial abutment is immovable with respect to the hub and against which a second free axial face is engageable. A coaxial mechanism for axially moving the chuck towards the hub and hence for tightening the second axial abutment axially towards the first axial abutment is provided such that the two races therebetween are tightened against one another until a pre-determined pre-stress value is obtained.
    Type: Application
    Filed: January 8, 2003
    Publication date: November 6, 2003
    Inventors: Herve Dardelet, Michel Augot, Marc Jenger
  • Composite bearing with double ball bearings, process for its assembly and tool for the realization of a pair of collars of said bearing
    Patent number: 6575636
    Abstract: Composite bearing with double ball bearings (4) for the rotary support of a rotating shaft (1) of a very high precision device, wherein this bearing with double ball bearings is constituted by the juxtaposition of two bearings with single ball bearings having two respective corresponding races (51, 52), interior or exterior, tightened axially against one another with a predetermined pre-stress, characterized in that the two races (51, 52) maintained tightened against one another with said pre-determined pre-stress are welded (9) to each other by their co-operating faces.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: June 10, 2003
    Assignee: Sagem SA
    Inventors: Hervé Dardelet, Michel Augot, Marc Jenger
  • Composite bearing with double ball bearings, process for its assembly and tool for the realization of a pair of collars of said bearing
    Publication number: 20010026653
    Abstract: Composite bearing with double ball bearings (4) for the rotary support of a rotating shaft (1) of a very high precision device, wherein this bearing with double ball bearings is constituted by the juxtaposition of two bearings with single ball bearings having two respective corresponding collars (51, 52), interior or exterior, tightened axially against one another with a predetermined pre-stress, characterized in that the two collars (51, 52) maintained tightened against one another with said pre-determined pre-stress are soldered (9) to each other by their co-operating faces.
    Type: Application
    Filed: March 12, 2001
    Publication date: October 4, 2001
    Inventors: Herve Dardelet, Michel Augot, Marc Jenger