Patents by Inventor Marshall D. Snyder

Marshall D. Snyder 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: 8317170
    Abstract: A spring for applying a biasing force to a disc of a brake hub assembly including a hub having a circumferential groove, at least one disc, and a plurality of guide pins for rotatably coupling the hub and the disc wherein the spring comprises a band for circumferentially engaging the hub. The spring is characterized by a plurality of axial position retention tabs circumferentially spaced and extending radially inwardly from the band for engaging the circumferential groove of the hub and for preventing axial movement between the spring and the hub. The spring is further characterized by a plurality of circumferential position tabs circumferentially spaced and extending radially outwardly from the band and being generally U-shaped and defining a guide pin opening for at least partially engaging one of the guide pins for rotatably coupling the spring and the hub.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: November 27, 2012
    Assignee: BWI Company Limited S.A.
    Inventors: Marshall D. Snyder, Eunjoo C. Hopkins, Thomas V. Valvano
  • Publication number: 20110210492
    Abstract: A spring for applying a biasing force to a disc of a brake hub assembly including a hub having a circumferential groove, at least one disc, and a plurality of guide pins for rotatably coupling the hub and the disc wherein the spring comprises a band for circumferentially engaging the hub. The spring is characterized by a plurality of axial position retention tabs circumferentially spaced and extending radially inwardly from the band for engaging the circumferential groove of the hub and for preventing axial movement between the spring and the hub. The spring is further characterized by a plurality of circumferential position tabs circumferentially spaced and extending radially outwardly from the band and being generally U-shaped and defining a guide pin opening for at least partially engaging one of the guide pins for rotatably coupling the spring and the hub.
    Type: Application
    Filed: May 12, 2011
    Publication date: September 1, 2011
    Inventors: Marshall D. Snyder, Eunjoo C. Hopkins, Thomas V. Valvano
  • Patent number: 7958978
    Abstract: A brake hub assembly including a hub defining a central axis, a plurality of guide pins, each of the plurality of guide pins extending from the hub and being generally aligned with the central axis, and a disc having at least two friction surfaces, the disc defining a plurality of guide pin receiving bores, wherein each of the plurality of guide pin receiving bores are positioned to receive an associated one of the plurality of guide pins therethrough such that the disc is moveable relative to the hub along the central axis.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: June 14, 2011
    Assignee: BWI Company Limited S.A.
    Inventors: Marshall D. Snyder, Eunjoo C. Hopkins, Thomas V. Valvano
  • Patent number: 7793765
    Abstract: The invention provides a multi-disc brake for a vehicle. A knuckle supports a wheel of a vehicle. A hub is mounted for rotation on the knuckle about a rotation axis. A pair of discs are mounted for rotation with the hub and for sliding movement on the hub along the rotation axis. Each of the discs includes respective inboard and outboard engaging surfaces. Brake pad assemblies are disposed about the discs to engage the engaging surfaces. The brake pad assemblies slide along the rotation axis relative to the hub. A brake fist having a bridge portion extends outboard from the knuckle around the discs and the brake pad assemblies to an outboard wall supporting the outboard brake pad assembly against outboard movement along the rotation axis. An actuator urges the discs and the brake pad assemblies together against the outboard wall to slow rotation of the hub.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: September 14, 2010
    Inventors: Thomas V. Valvano, Marshall D. Snyder, Patrick N. Hopkins, Martin J. Reder
  • Publication number: 20090038895
    Abstract: A brake hub assembly including a hub defining a central axis, a plurality of guide pins, each of the plurality of guide pins extending from the hub and being generally aligned with the central axis, and a disc having at least two friction surfaces, the disc defining a plurality of guide pin receiving bores, wherein each of the plurality of guide pin receiving bores are positioned to receive an associated one of the plurality of guide pins therethrough such that the disc is moveable relative to the hub along the central axis.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 12, 2009
    Inventors: Marshall D. Snyder, Eunjoo C. Hopkins, Thomas V. Valvano
  • Patent number: 7331430
    Abstract: The invention provides a multi-disc brake for a vehicle having a knuckle for supporting a wheel of a vehicle and a hub mounted for rotation on the knuckle about a rotation axis. The multi-disc brake also includes a pair of discs mounted for rotation with and sliding movement on the hub along the rotation axis. Each disc includes inboard and outboard engaging surfaces. The multi-disc brake also includes a plurality of brake pad assemblies disposed in alternating arrangement between the discs. The multi-disc brake also includes a caliper disposed for sliding movement relative to the knuckle and having an inboard wall and a bridge portion extending from the inboard wall around the discs and the brake pad assemblies to an outboard wall adjacent to the outboard brake pad assembly.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: February 19, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas V. Valvano, Marshall D. Snyder