Patents by Inventor Kevin L. Leffel

Kevin L. Leffel 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: 9211394
    Abstract: A balloon catheter having wires situated between an outer layer and a surface of a balloon is described. Each wire may be confined within an interior space of a pocket or encapsulated within a sheath. The pocket includes the outer layer and the balloon surface. The outer layer and balloon surface are unattached to allow the wire to slidably fit between therewithin. The pocket is selectively bonded to the balloon. The sheath includes a preformed shape that completely circumscribes the wire along the longitudinal and radial directions of the wire. The confined and encapsulated feature of the wires enable the wires to be atraumatic and remain spaced apart during treatment of calcification of a lesion.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: December 15, 2015
    Assignee: COOK MEDICAL TECHNOLOGIES LLC
    Inventor: Kevin L. Leffel
  • Publication number: 20120022563
    Abstract: A balloon catheter having wires situated between an outer layer and a surface of a balloon is described. Each wire may be confined within an interior space of a pocket or encapsulated within a sheath. The pocket includes the outer layer and the balloon surface. The outer layer and balloon surface are unattached to allow the wire to slidably fit between therewithin. The pocket is selectively bonded to the balloon. The sheath includes a preformed shape that completely circumscribes the wire along the longitudinal and radial directions of the wire. The confined and encapsulated feature of the wires enable the wires to be atraumatic and remain spaced apart during treatment of calcification of a lesion.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 26, 2012
    Applicant: Cook Medical Technologies LLC
    Inventor: Kevin L. Leffel
  • Patent number: 5609314
    Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 11, 1997
    Assignee: The B. F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5553814
    Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: September 10, 1996
    Assignee: The B.F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5547150
    Abstract: A deicer for attachment to an airfoil substructure includes a segmented outer shell, with adjacent segments being decoupled from one another utilizing elastomeric decoupling members. The outer edges of the outer periphery shell segments are likewise decoupled from the airfoil structure utilizing elastomeric decoupling members. Each segment of the deicer is deflected by a respective deflection means which are provided energy from a controller.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: August 20, 1996
    Assignee: The B.F. Goodrich Company
    Inventors: Lowell J. Adams, Kevin L. Leffel, Gary V. Tenison, Norbert A. Weisend, Jr.
  • Patent number: 5546880
    Abstract: Fibrous substrates for the production of carbon and/or ceramic (including mixtures of these) fiber reinforced carbon and/or ceramic (including mixtures of these) composites and to methods of manufacture of same.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: August 20, 1996
    Assignee: The BF Goodrich Company
    Inventors: David M Ronyak, Kevin L. Leffel
  • Patent number: 5489073
    Abstract: An airfoil deicing system includes an airfoil substructure having an apex corresponding to the portion of the airfoil where the radius of curvature of the airfoil is smallest, the airfoil and the apex being bisected by a centerline, a deflectable shell disposed over the airfoil substructure for meeting and breaking an impinging airstream, a deflection means disposed between the airfoil substructure and the deflectable shell at the apex for deflecting the deflectable shell in the area of the apex away from the airfoil substructure and, at least one compressible zones provided beneath the deflectable shell adjacent the apex on either side of the centerline, the compressible zones facilitating deflection of the deflectable shell overlying the compressible zones toward the airfoil substructure when the deflection means deflects the deflectable shell.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: February 6, 1996
    Assignee: The B. F. Goodrich Company
    Inventors: Kevin L. Leffel, Richard L. Rauckhorst, III
  • Patent number: 5427332
    Abstract: A modular ice protection system for an airfoil includes a deflection assembly attached to the airfoil and a removable outer shell having a modulus of elasticity of at least 40,000 kPa impermanently disposed over the deflection assembly, wherein the deflection assembly causes distortion of the separable outer shell during de-icing. The deflection assembly may likewise be removable from an underlying substructure which is attached to the airfoil.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: June 27, 1995
    Assignee: The B. F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5356096
    Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: October 18, 1994
    Assignee: The B. F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5288355
    Abstract: A structural member having integral surface de-icing capability and method of manufacture are described. The structural member includes a non-metallic high tensile modulus fiber-reinforced matrix structural backing, thin force and displacement generation means, and a thin high tensile modulus outer skin bonded to said backing and said force and displacement generation means which is postioned between the backing and the skin. The force and displacement generation means may include one or more inflatable tubular members and/or electromagnetic apparatus. The structural member may be substituted for the aluminum alloy leading edge structural skin typically employed on modern aircraft.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: February 22, 1994
    Assignee: The B.F. Goodrich Company
    Inventors: Kevin L. Leffel, James C. Putt, Richard L. Rauckhorst
  • Patent number: 5112011
    Abstract: An inflatable deicer having deicing tubes formed by adjacent rows of stitching between inner and outer plies with a manifold tube intersecting and extending across the deicing tubes. The stitching of the deicing tubes is turned at the edges of the manifold to reinforce the edges of the manifold tube. The deicing tubes are narrow and the inflation pressure is high for a short activation time at relatively long intervals to shed thin ice.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: May 12, 1992
    Assignee: The B. F. Goodrich Company
    Inventors: Norbert A. Weisend, Jr., Bernard F. Trares, Kevin L. Leffel
  • Patent number: 5098037
    Abstract: A structural member having integral surface de-icing capability and method of manufacture are described. The structural member includes a non-metallic high tensile modulus fiber-reinforced matrix structural backing, thin force and displacement generation means, and a thin high tensile modulus outer skin bonded to said backing and said force and displacement generation means which is positioned between the backing and the skin. The force and displacement generation means may include one or more inflatable tubular members and/or electromagnetic apparatus. The structural member may be substituted for the aluminum alloy leading edge structural skin typically employed on modern aircraft.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: March 24, 1992
    Assignee: The B. F. Goodrich Company
    Inventors: Kevin L. Leffel, James C. Putt, Richard L. Rauckhorst
  • Patent number: 4836474
    Abstract: A de-icer for de-icing those ice accreting surfaces of a skin formed of a material having a substantially elevated modulus, wherein the de-icer is positioned between a support surface and a surface of the skin obverse to the ice accreting surface and inflated to produce a deformation in the skin sufficient to detach and dislodge accumulations of ice on the ice accreting surface but insufficient to exceed an endurance limit for the material from which the skin is formed. The invention finds use in de-icing aircraft surfaces such as wings, tail surfaces, propellers, rotors such as rotating wings, tail rotors and nose cones.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: June 6, 1989
    Assignee: The B. F. Goodrich Company
    Inventors: James A. Briscoe, James C. Putt, Ronald W. Phillips, II, Kevin L. Leffel
  • Patent number: 4826108
    Abstract: A de-icer for de-icing those ice accreting surfaces of a skin formed of a material having a substantially elevated modulus, wherein the de-icer is positioned between a support surface and a surface of the skin obverse to the ice accreting surface and inflated to produce a deformation in the skin sufficient to detach and dislodge accumulations of ice on the ice accreting surface but insufficient to exceed an endurance limit for the material from which the skin is formed. The invention finds use in de-icing aircraft surfaces such as wings, tail surfaces, propellers, rotors such as rotating wings, tail rotors and nose cones.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: May 2, 1989
    Assignee: The B. F. Goodrich Company
    Inventors: James A. Briscoe, James C. Putt, Ronald W. Phillips, II, Gary V. Tenison, Kevin L. Leffel