Patents by Inventor Allan Ewing

Allan Ewing 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).

  • Lightweight high stiffness member and manufacturing method thereof
    Patent number: 6218026
    Abstract: A high performance hybrid member for use in applications where high stiffness, high temperature capacity and being lightweight are important. In one form of the present invention the hybrid member is formed of a titanium alloy outer portion with a gamma titanium aluminide alloy inner portion metallurgically bonded therin. The gamma titanium aluminide alloy material has a room temperature modulus of elasticity greater than the modulus of elasticity of the titanium alloy outer portion. The hybrid member has a modulus of elasticity greater than modulus of elasticity of the titanium alloy outer portion, and a density equivalent to that of the titanium outer portion. The wear resistant capability of the member can be increased at local regions by surface modification treatment such as plasma ion nitriding or by affixing at ends of the member hardened fittings.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: April 17, 2001
    Assignees: Allison Engine Company, Allison Advanced Development Company
    Inventors: Bruce Allan Ewing, Robert Anthony Ress, Jr., James Ronald Roessler
  • High stiffness airoil and method of manufacture
    Patent number: 6190133
    Abstract: A cast metallic airfoil structure having a high stiffness core positioned therein for increasing the stiffness of the airfoil. In one embodiment, the high stiffness core is preferably formed of gamma titanium aluminde or a titanium metal matrix composite and is metallurgically bonded to the cast metallic airfoil structure. In one form the airfoil structure forms a portion of an integrally bladed rotor, and in a second form the airfoil structure has a dove tail attachment portion.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: February 20, 2001
    Assignees: Allison Engine Company, Allison Advanced Development Company
    Inventors: Robert Anthony Ress, Jr., Bruce Allan Ewing, Brian Paul King
  • Sliding belt turn conveyor
    Patent number: 5857559
    Abstract: A belt turn conveyor includes a conveyor support having first and second generally stationary vertical bearing surfaces and first and second generally stationary horizontal bearing surfaces. An endless belt is rotationally supported by the conveyor support and includes bearing assemblies for engaging the vertical bearing surfaces for retaining the endless belt on the conveyor support. An elongated strip of low friction flexible material is secured to the endless belt for engaging the horizontal surfaces of the conveyor support to restrain vertical movement of the endless belt.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: January 12, 1999
    Assignee: Mannesmann Dematic Rapistan Corp.
    Inventors: Rodolfo Gianvito, John A. Krznarich, Allan Ewing
  • Belt turn conveyor
    Patent number: 5722531
    Abstract: A belt turn conveyor includes a vertical support member extending to the ground and a lateral support which is cantilevered from the vertical support. An endless belt can be removed and installed by slipping the endless belt over an end of the lateral support opposite the vertical support. In this manner, the belt can be removed without disassembling the vertical support.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: March 3, 1998
    Assignee: Mannesmann Dematic Rapistan Corp.
    Inventors: Mariusz Zimny, John Krznarich, Allan Ewing