Patents by Inventor Herb M. Poplawski

Herb M. Poplawski 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).

  • Hydrostatic transmission
    Patent number: 7430942
    Abstract: A hydrostatic transmission mountable to a vehicle frame. The hydrostatic transmission is adapted to removeably receive an axle shaft. The hydrostatic transmission is also adapted to be mounted to at least one of two opposed side members of the vehicle frame. The opposed side members have openings through which the axel shaft passes. The vehicle may be a snow thrower.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: October 7, 2008
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Herb M. Poplawski, Thomas D. Wiley, John D. Schreier, Michael L. Bennett, Lonnie E. Holder, Ralph A. McClelland
  • Hydrostatic transmission
    Patent number: 7007571
    Abstract: A hydrostatic transmission mountable to a vehicle frame. The hydrostatic transmission is adapted to removeably receive an axle shaft. The hydrostatic transmission is also adapted to be mounted to at least one of two opposed side members of the vehicle frame. The opposed side members have openings through which the axel shaft passes. The vehicle may be a snow thrower.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: March 7, 2006
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Herb M. Poplawski, Thomas D. Wiley, John D. Schreier, Michael L. Bennett, Lonnie E. Holder, Ralph A. McClelland
  • Hydrostatic transmission bypass latch
    Patent number: 6804958
    Abstract: A hydrostatic transmission may be placed in a free-wheeling state by rotating a bypass actuator that lifts the motor from a motor running surface whereby hydraulic fluid flows into a transmission cavity. A bypass arm connected to the bypass actuator and to a bypass rod may be used to engage and disengage the bypass actuator via operation of the rod. Further, a bypass latch may be used to lock the bypass arm in an engaged position whereby the bypass actuator is engaged and the transmission is disengaged. The bypass latch arm is preferably linked to the brake pedal whereby actuation of the brake pedal disengages the bypass actuator through operation of the latching arm. The system may be designed to provide dynamic braking through transmission resistivity prior to application of a brake force to the axles or wheels by unlatching the bypass arm prior to actuating the brake arm.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: October 19, 2004
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Herb M. Poplawski, Raymond Hauser, John D. Schreier, Thomas J. Langenfeld
  • Hydrostatic transmission bypass latch
    Patent number: 6651427
    Abstract: A hydrostatic transmission may be placed in a free-wheeling state by rotating a bypass actuator that lifts the motor from a motor running surface whereby hydraulic fluid flows into a transmission cavity. A bypass arm connected to the bypass actuator and to a bypass rod may be used to engage and disengage the bypass actuator via operation of the rod. Further, a bypass latch may be used to lock the bypass arm in an engaged position whereby the bypass actuator is engaged and the transmission is disengaged. The bypass latch arm is preferably linked to the brake pedal whereby actuation of the brake pedal disengages the bypass actuator through operation of the latching arm. The system may be designed to provide dynamic braking through transmission resistivity prior to application of a brake force to the axles or wheels by unlatching the bypass arm prior to actuating the brake arm.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: November 25, 2003
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Herb M. Poplawski, Raymond Hauser, John D. Schreier
  • Hydrostatic transmission bypass latch
    Patent number: 6374604
    Abstract: A hydrostatic transmission may be placed in a free-wheeling state by rotating a bypass actuator that lifts the motor from a motor running surface whereby hydraulic fluid flows into a transmission cavity. A bypass arm connected to the bypass actuator and to a bypass rod may be used to engage and disengage the bypass actuator via operation of the rod. Further, a bypass latch may be used to lock the bypass arm in an engaged position whereby the bypass actuator is engaged and the transmission is disengaged. The bypass latch arm is preferably linked to the brake pedal whereby actuation of the brake pedal disengages the bypass actuator through operation of the latching arm. The system may be designed to provide dynamic braking through transmission resistivity prior to application of a brake force to the axles or wheels by unlatching the bypass arm prior to actuating the brake arm.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: April 23, 2002
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Herb M. Poplawski, Raymond Hauser, John D. Schreier, Thomas J. Langenfeld