Patents by Inventor Jeffrey S. Schwake

Jeffrey S. Schwake 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: 8844174
    Abstract: A dipper including a dipper door and an impact actuated jaw defining a lip and a chin The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: September 30, 2014
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20140079522
    Abstract: A dipper including a dipper door and an impact actuated jaw defining a lip and a chin The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 20, 2014
    Applicant: HARNISCHFEGER TECHNOLOGIES, INC.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Patent number: 8590180
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin. The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: November 26, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Patent number: 8136272
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin. The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: March 20, 2012
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20110146114
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Application
    Filed: January 7, 2011
    Publication date: June 23, 2011
    Applicant: HARNISCHFEGER TECHNOLOGIES, INC.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley
  • Publication number: 20100212194
    Abstract: A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin. The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.
    Type: Application
    Filed: January 8, 2010
    Publication date: August 26, 2010
    Applicant: HARNISCHFEGER TECHNOLOGIES, INC.
    Inventors: William J. Hren, Joseph J. Colwell, Jeffrey S. Schwake, Bruce P. Kearsley