Patents by Inventor Larry Jacobs

Larry Jacobs 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).

  • Mechanical face seal with a reverse trapezoidal face pattern
    Patent number: 9574666
    Abstract: An improved mechanical face seal is provided which includes a pair of relatively rotatable seal rings having opposing seal faces. At least one of the seal faces includes a reverse trapezoidal face pattern having a sine wave depth profile wherein individual face features are circumferentially spaced over the seal face. The reverse trapezoidal face pattern serves to generate a hydrodynamic lift which provides a stable separation of the seal faces that permits formation of a fluid film between the seal faces. The individual trapezoidal grooves have a sinusoidal or similarly shaped depth profile wherein the trapezoid shape is arranged with the narrower edge communicating with the high pressure side of the seal, and the wider edge forms a circumferential dam region towards the low pressure side of the seal.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: February 21, 2017
    Assignee: Flowserve Management Company
    Inventors: Jason Ferris, Larry Jacobs, Christopher Gray
  • MECHANICAL FACE SEAL WITH A REVERSE TRAPEZOIDAL FACE PATTERN
    Publication number: 20140203517
    Abstract: An improved mechanical face seal is provided which includes a pair of relatively rotatable seal rings having opposing seal faces. At least one of the seal faces includes a reverse trapezoidal face pattern having a sine wave depth profile wherein individual face features are circumferentially spaced over the seal face. The reverse trapezoidal face pattern serves to generate a hydrodynamic lift which provides a stable separation of the seal faces that permits formation of a fluid film between the seal faces. The individual trapezoidal grooves have a sinusoidal or similarly shaped depth profile wherein the trapezoid shape is arranged with the narrower edge communicating with the high pressure side of the seal, and the wider edge forms a circumferential dam region towards the low pressure side of the seal.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 24, 2014
    Applicant: Flowserve Management Company
    Inventors: Jason Ferris, Larry Jacobs, Christopher Gray
  • Laser shock peened gas turbine engine compressor airfoil edges
    Publication number: 20070243071
    Abstract: Gas turbine engine compressor component that has an airfoil such as a compressor blade with a metallic airfoil having a leading edge and a trailing edge and at least one laser shock peened surface extending radially along at least a portion of the leading edge and a region having deep compressive residual stresses imparted by laser shock peening (LSP) extending into the airfoil from the laser shock peened surface.
    Type: Application
    Filed: August 17, 2005
    Publication date: October 18, 2007
    Inventors: Seetha Mannava, James Rhoda, Herbert Halila, Larry Jacobs, Edward Rainous