Patents by Inventor Benjamin D. Curtis

Benjamin D. Curtis 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).

  • Trolling motor assembly with replaceable nosecone
    Patent number: 10351220
    Abstract: A trolling motor assembly includes a main housing holding an electric motor. A propeller is attached to a propeller shaft that is driven by the electric motor and projects from a rear end of the main housing. A steering shaft is configured to couple the main housing to a watercraft. A nosecone is coupled to the main housing at the front end of the main housing. The nosecone is removable from the front end of the main housing. The main housing is watertight when the nosecone is removed therefrom.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: July 16, 2019
    Assignee: Brunswick Corporation
    Inventors: John Witte, Nathan D. Koetsier, Michael J. Boks, Katherine D. Winer, Benjamin D. Curtis, Haley A. Raatz, Kevin T. Downey
  • Labyrinth seal adapter for marine propeller
    Patent number: 6835047
    Abstract: A seal adapter for reducing the escape of exhaust gases between an outboard motor and a propeller includes a substantially hollow cylindrical connecting member (71) having a shoulder (84) for dividing the connecting member (70) into a plurality of sections. A seal ring (80) is associated with one of the sections for engaging with an annular recess (76) located within the propeller hub (74) to provide a substantially tight seal.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: December 28, 2004
    Assignee: Michigan Wheel Corporation
    Inventors: Charles L. Gerlach, Benjamin D. Curtis
  • Labyrinth seal adapter for marine propeller
    Publication number: 20040091356
    Abstract: A seal adapter for reducing the escape of exhaust gases between an outboard motor and a propeller includes a substantially hollow cylindrical connecting member (71) having a shoulder (84) for dividing the connecting member (70) into a plurality of sections. A seal ring (80) is associated with one of the sections for engaging with an annular recess (76) located within the propeller hub (74) to provide a substantially tight seal.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Inventors: Charles L. Gerlach, Benjamin D. Curtis