Patents by Inventor Michel Leperre

Michel Leperre 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).

  • Cartridge for bulling mine holes
    Patent number: 4470352
    Abstract: Cartridge for bulling mine holes, which is of cylindrical shape, is made of n elastic material and possesses a zone 7 capable of deforming axially and a zone 6 capable of deforming radially, under the effect of an axial or radial pressure exerted on the cartridge or under the effect of an internal pressure variation, in which cartridge the volume of the zone 7 capable of deforming axially is greater than the volume of the zone 6 capable of deforming radially.
    Type: Grant
    Filed: January 8, 1982
    Date of Patent: September 11, 1984
    Assignee: Societe Bourguignonne d'Applications Plastiques (Societe Anonyme)
    Inventor: Michel Leperre