Patents by Inventor Harold W Spielman

Harold W Spielman 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: 10428923
    Abstract: A torque converter oil cooling system includes an air-oil cooler system that is adapted to be disposed between a torque converter charging oil outlet and charging oil inlet. The torque converter oil cooling system has a controller that directs oil when at a predetermined temperature to pass through an air oil cooler for cooling and then directs the cooled oil back to the inlet of the torque converter for torque converter operation. The torque converter oil cooling system normally operates in the non-lockup mode operation of the torque converter. Using the torque converter oil cooling system permits a vehicle to continuously operate in a torque converter mode for an extended period of time, which becomes extremely helpful when the vehicle is called upon to haul heavy loads over steep grades.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: October 1, 2019
    Assignee: TowHaul Corporation
    Inventor: Harold W. Spielman
  • Publication number: 20190024769
    Abstract: A torque converter oil cooling system includes an air-oil cooler system that is adapted to be disposed between a torque converter charging oil outlet and charging oil inlet. The torque converter oil cooling system has a controller that directs oil when at a predetermined temperature to pass through an air oil cooler for cooling and then directs the cooled oil back to the inlet of the torque converter for torque converter operation. The torque converter oil cooling system normally operates in the non-lockup mode operation of the torque converter. Using the torque converter oil cooling system permits a vehicle to continuously operate in a torque converter mode for an extended period of time, which becomes extremely helpful when the vehicle is called upon to haul heavy loads over steep grades.
    Type: Application
    Filed: July 19, 2017
    Publication date: January 24, 2019
    Inventor: Harold W. SPIELMAN
  • Patent number: 7036640
    Abstract: An axle assembly that uses brakes that require cooling includes a brake cooling system that uses at least one hydraulic pump that supplies cooling oil to the brakes. Means for driving of the hydraulic pump using rotation of a component of the axle assembly such as a transmission or other mechanism is provided, thereby eliminating reliance on a towing vehicle. A heat exchanger cools the heated oil exiting from the brakes and recirculates the cooled oil back to the brakes for continued cooling.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: May 2, 2006
    Assignee: Towhaul Corporation
    Inventor: Harold W Spielman
  • Publication number: 20040129514
    Abstract: An axle assembly that uses brakes that require cooling includes a brake cooling system that uses at least one hydraulic pump that supplies cooling oil to the brakes. Means for driving of the hydraulic pump using rotation of a component of the axle assembly such as a transmission or other mechanism is provided, thereby eliminating reliance on a towing vehicle. A heat exchanger cools the heated oil exiting from the brakes and recirculates the cooled oil back to the brakes for continued cooling.
    Type: Application
    Filed: November 14, 2003
    Publication date: July 8, 2004
    Inventor: Harold W. Spielman
  • Patent number: 6071068
    Abstract: A dragline bucket transporter for use in moving a dragline bucket with a hauling vehicle comprises a wheeled trailer having a U-shaped frame with tire-supported free ends, the free ends forming an open end. The frame is moved by a hauling vehicle to surround the sidewalls of a dragline bucket. Once the bucket is surrounded, a cross member of the frame engages and lifts a front end portion of the bucket by action of a hitching assembly attached to the hauling vehicle. With the front end of the bucket elevated, lifting assemblies located at the free ends of the frame lift up a rear portion of the bucket so that it is off the ground. The hauling vehicle can then transport the bucket to a desired location, the bucket then removed from the transporter for use with a dragline.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: June 6, 2000
    Assignee: Towhaul Corporation
    Inventors: Francis V. Smith, Harold W. Spielman
  • Patent number: 5944471
    Abstract: A dragline bucket transporter for use in moving a dragline bucket with a hauling vehicle comprises a wheeled trailer having a U-shaped frame with tire-supported free ends, the free ends forming an open end. The frame is moved by a hauling vehicle to surround the sidewalls of a dragline bucket. Once the bucket is surrounded, a cross member of the frame engages and lifts a front end portion of the bucket by action of a hitching assembly attached to the hauling vehicle. With the front end of the bucket elevated, lifting assemblies located at the free ends of the frame lift up a rear portion of the bucket so that it is off the ground. The hauling vehicle can then transport the bucket to a desired location, the bucket then removed from the transporter for use with a dragline.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: August 31, 1999
    Assignee: Towhaul Corporation
    Inventors: Francis V. Smith, Harold W. Spielman