Patents by Inventor Sylvain Seguin

Sylvain Seguin 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).

  • Patent number: 12078069
    Abstract: A rotor assembly has: blades having airfoils and roots protruding from platform segments; a rotor disc having a peripheral face defining recesses, and slots, a recess located between two adjacent ones of the slots and bounded by a step; feather seals located radially between the peripheral face and the platform segments, a feather seal having a core extending from a trailing end to a leading end and overlapping a gap defined between two platform segments and tabs protruding from the core, the tabs including: trailing tabs positioned axially outside the recess; and leading tabs, a leading tab extending from a root to a tip and having one or more of: the tip axially positioned outside of the recess; and a fillet at an intersection between the tip and an edge of the leading tab, the edge extending between the tip and the core, and facing the step.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: September 3, 2024
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Marc Tardif, Alexandre Seguin, Sylvain Vignola
  • Patent number: 4669652
    Abstract: A two-way mailing envelope for both first and return mailing is disclosed, which has top, bottom and side edges and comprises a pair of panels foldably connected to each other along one fold line extending along the bottom edge and folded over one another to form a first mailing envelope, first adhesive means adhesively fastening in superimposed relationship side edge portions of the panels, and first and second side tear strips severable along respective first and second tear lines and including the side edge portions. A first adhesive closure flap is foldably connected to the one panel along another fold line extending along the top edge, the first adhesive closure flap being foldable along the other fold line to seal the first mailing envelope.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: June 2, 1987
    Inventor: Sylvain Seguin