Patents by Inventor Douglas A. Hull

Douglas A. Hull 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).

  • Publication number: 20250214693
    Abstract: A marine drive is for propelling a marine vessel in a body of water. The marine drive comprises a motor housing defining a motor cavity; a motor disposed in the motor cavity; a propulsor shaft extending from the motor housing, wherein the motor is configured to cause rotation of the propulsor shaft; a propulsor which is rotated by the propulsor shaft to create a thrust force in the body of water; and a vent conduit having a first end connected to the motor cavity and a second end which vents the motor cavity to atmosphere.
    Type: Application
    Filed: March 19, 2025
    Publication date: July 3, 2025
    Applicant: Brunswick Corporation
    Inventors: David J. Waldvogel, Kass W. Sawyer, Laura K. Mueller, Douglas A. Hull, Aaron J. Novak
  • Patent number: 12275511
    Abstract: A marine drive is for propelling a marine vessel in a body of water. The marine drive comprises a motor housing defining a motor cavity; a motor disposed in the motor cavity; a propulsor shaft extending from the motor housing, wherein the motor is configured to cause rotation of the propulsor shaft; a propulsor which is rotated by the propulsor shaft to create a thrust force in the body of water; and a vent conduit having a first end connected to the motor cavity and a second end which vents the motor cavity to atmosphere.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: April 15, 2025
    Assignee: Brunswick Corporation
    Inventors: David J. Waldvogel, Kass W. Sawyer, Laura K. Mueller, Douglas A. Hull, Aaron J. Novak
  • Publication number: 20230257095
    Abstract: A marine drive is for propelling a marine vessel in a body of water. The marine drive comprises a motor housing defining a motor cavity; a motor disposed in the motor cavity; a propulsor shaft extending from the motor housing, wherein the motor is configured to cause rotation of the propulsor shaft; a propulsor which is rotated by the propulsor shaft to create a thrust force in the body of water; and a vent conduit having a first end connected to the motor cavity and a second end which vents the motor cavity to atmosphere.
    Type: Application
    Filed: February 14, 2022
    Publication date: August 17, 2023
    Applicant: Brunswick Corporation
    Inventors: David J. Waldvogel, Kass W. Sawyer, Laura K. Mueller, Douglas A. Hull, Aaron J. Novak
  • Patent number: 5400445
    Abstract: There is disclosed a mechanism for initiating and controlling a toilet: flush mechanism of the type which permits selection between two flush cycles which use different volumes of water end which, to do that, requires that the flush valve be lifted to either of two levels. Each of two rotating handles drives a shaft which rotates a flush lever arm. The shafts are concentric. One of flush lever arms has a longer crank portion than the other so that points on the lever portion move a greater vertical distance for a given angular rotation than move corresponding points on the flush lever arm with the shorter crank portion. A single blocking member limits the rotation of both flush lever arms to the same range of angular motion. Tabs on a bushing for the shafts supplement the blocking member by stopping rotation of the handle approximately when the blocking member contacts the flush lever arm driven by that handle.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: March 28, 1995
    Assignee: Kohler Co.
    Inventor: Douglas A. Hull
  • Patent number: 5301373
    Abstract: A flush mechanism for use with a toilet tank is disclosed. The mechanism permits selection between flushing cycles of two different time durations. The tank has a wall with an outlet therein and a valve member. The flush mechanism has a shaft linked at one end to the valve, a float slidably mounted on the shaft, and a cam pivotally connected to the shaft adjacent the float. The cam is rotatable between a short flush position wherein the float is allowed to assume a high position along the shaft and a long flush position wherein the cam member forces the float into a low position along the shaft.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: April 12, 1994
    Assignee: Kohler Co.
    Inventors: Douglas A. Hull, Randy O. Mesun