Patents by Inventor Leonard H. Hancock, Sr.

Leonard H. Hancock, Sr. 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: 9038753
    Abstract: A hydraulic system includes a power assembly connected to a vehicle drive line. The power assembly is selected from the group consisting of a split shaft power take off assembly and a transfer case. At least one hydraulic pump is connected to the power assembly. At least one hydraulic consumer is drivingly connected to the at least one hydraulic pump. The at least one hydraulic pump is selected from the group consisting of a variable displacement pump and a constant displacement pump.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: May 26, 2015
    Inventor: Leonard H. Hancock, Sr.
  • Publication number: 20140102815
    Abstract: A hydraulic system includes a power assembly connected to a vehicle drive line. The power assembly is selected from the group consisting of a split shaft power take off assembly and a transfer case. At least one hydraulic pump is connected to the power assembly. At least one hydraulic consumer is drivingly connected to the at least one hydraulic pump. The at least one hydraulic pump is selected from the group consisting of a variable displacement pump and a constant displacement pump.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Inventor: Leonard H. Hancock, SR.
  • Patent number: 8567538
    Abstract: A hydraulic system includes a split shaft power take off assembly or a transfer case powered by a vehicle drive train. One or more hydraulic pumps are driven by the split shaft power take off assembly or transfer case and supply hydraulic fluid to one or more hydraulic users.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: October 29, 2013
    Inventor: Leonard H. Hancock, Sr.
  • Patent number: 8075036
    Abstract: A utility vehicle includes a utility body, a chamber formed in the utility body, a framework movable into and out of the chamber, and at least one utility device located on the framework.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: December 13, 2011
    Inventors: Leonard H. Hancock, Sr., Leonard Hancock, Jr.
  • Publication number: 20110286866
    Abstract: An AC operating system has an electrical distribution panel; a variable frequency drive control unit having a first variable frequency drive and a second variable frequency drive; a hydraulic oil heat exchanger; and a hydraulic power unit. The hydraulic power unit includes a housing having a first electric motor connected to the first variable frequency drive and a second electric motor connected to the second variable frequency drive. A first pump and valve assembly is connected to the first electric motor and a second pump and valve assembly is connected to the second electric motor. A motor start command is transmitted from the electrical distribution panel to at least one of the variable frequency drives. The variable frequency drive controller ramps up power to the selected motor to begin rotation of the motor to a predetermined operating speed in a predetermined amount of time.
    Type: Application
    Filed: April 20, 2011
    Publication date: November 24, 2011
    Inventor: Leonard H. Hancock, SR.
  • Patent number: 7854116
    Abstract: A load sense valve assembly includes a first valve in flow communication with a pump discharge line, a second valve in flow communication with the first valve, and a third valve in flow communication with the first valve. The first valve can be a solenoid actuated directional control valve. The second and third valves can be hydraulic pilot actuated directional control valves.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: December 21, 2010
    Inventor: Leonard H. Hancock, Sr.
  • Publication number: 20100078965
    Abstract: A utility vehicle includes a utility body, a chamber formed in the utility body, a framework movable into and out of the chamber, and at least one utility device located on the framework.
    Type: Application
    Filed: June 29, 2009
    Publication date: April 1, 2010
    Inventors: Leonard H. Hancock, SR., Leonard Hancock, JR.
  • Publication number: 20080288129
    Abstract: An electronic control system comprises a remote control radio transmitter (RCRT) and/or an auxiliary wired control (AWC) configured to transmit an operational control signal. A CANbus radio receiver (CRR) is in electronic communication with the RCRT and/or AWC. A programmable logic control system (PLC) is in electronic communication with the CRR via a CANbus connection. A control device is in electronic communication with the PLC to carry out the operational control signal.
    Type: Application
    Filed: April 21, 2008
    Publication date: November 20, 2008
    Inventor: Leonard H. Hancock, SR.