Patents by Inventor William David Hardgrave

William David Hardgrave 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: 20170023236
    Abstract: The vortex tube when properly used within a Rankine cycle can produce phenomenal results. This invention functionally describes the preferred vortex tube used to produce superheated vapor from a compressed heated liquid without summoning the additional heat required for latent-heat to effect vaporization. The vortex tube provides superheated vapor to a turbine for generating electricity burning 50% less fossil fuel, also releasing 50% less carbon emissions to the environment. The vortex tube extends the efficient Rankine Cycle temperature range well below 150° F. with the proper refrigerant choice. The physical size and function of the hearing equipment is reduced. The invention delivers new thermal efficiencies for both the Rankine Cycle and the Organic Rankine Cycle.
    Type: Application
    Filed: October 10, 2016
    Publication date: January 26, 2017
    Inventor: William David Hardgrave
  • Publication number: 20160047279
    Abstract: The vortex tube when properly used within a Rankine Cycle can produce phenomenal results. This invention functionally describes the preferred vortex tube used to produce superheated vapor from a compressed heated liquid without summoning the additional heat required for latent-heat to effect vaporization. The vortex tube provides superheated vapor to a turbine for generating electricity burning 50% less fossil fuel, also releasing 50% less carbon emissions to the environment. The vortex tube extends the efficient Rankine Cycle temperature range well below 150° F. with the proper refrigerant choice. The physical size and function of the heating equipment is reduced. This invention delivers new thermal efficiencies for both the Rankine Cycle and the Organic Rankine Cycle.
    Type: Application
    Filed: August 16, 2015
    Publication date: February 18, 2016
    Inventor: William David Hardgrave
  • Patent number: 8844287
    Abstract: The present invention is directed at the thermodynamic property amplification of a given thermal supply, provided by hydrocarbon combustion or in the preferred application heat provided by low-grade geothermal energy from the earth, for a vapor power cycle. The present invention achieves the desired objectives by segregating the compressible supercritical energy stream from the heat exchanger (boiler) into hot and cool fractions using a vortex tube, where the hot temperature is elevated above the heat exchanger temperature; and adding back heat (enthalpy) to the cool stream increasing the cool temperature to that of the geothermal heat exchanger.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: September 30, 2014
    Inventor: William David Hardgrave
  • Patent number: 8656720
    Abstract: The present invention includes systems and methods to recover heat from a lower quality heat source and convert that heat represented by its temperature differential range into a different form of extractable energy. In various illustrative examples, the system may include a heat recovery heat exchanger, a conventional counter-flow vortex tube, a power producing turbine, a condenser heat exchanger, and a liquid circulating pump. The system further comprises a condenser heat exchanger that is adapted to receive the turbine exhaust vapor, wherein the temperature of the exhaust vapor is reduced via heat transfer rejecting the waste heat to the surrounding atmosphere at atmospheric temperatures; wherein the compressible working vapor is converted to a saturated liquid and returned to the first heat exchanger by pumping means for further cycling.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: February 25, 2014
    Inventor: William David Hardgrave
  • Patent number: 7021373
    Abstract: A system and method for pumping water from a wellbore to a surface location using an improved motorless water pump. The improved motorless water pump is a downhole hydraulic ram pump powered by the renewable energy source, groundwater. As water falls down a wellbore from an upper strata to a lower strata, the conversion of the water's momentum to energy is used to compress air captured in the ram's pressure chamber. The compressed air contained in the pressure chamber pushes down on the water captured in the pressure chamber causing the water to exit the pressure chamber through an outlet and into tubing. The water in the tubing is responsive to the pressure in the chamber rising to the surface.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: April 4, 2006
    Inventor: William David Hardgrave
  • Patent number: 6662078
    Abstract: A system and method for item tracking and management. A marking tag is affixed to each item to be tracked, such as articles of commercial airline passenger luggage, so that it can be read as items enter and leave the system through which they are actively managed. The marking tag bears unique identifying information that in a central registration database is associated with the person to which the item (or items) belongs. The marking tag may also bear additional information about the owner or the about the article itself. Each time the owner checks the item, the time and place of checking is noted in the registration database. A historical record of places the item has been checked is kept and may be used for identifying passengers, baggage or situations that may require greater scrutiny by security personnel. A check-out station is provided to monitor the return of items to their respective owners, and a lost item return system aids in the recovery of lost items.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: December 9, 2003
    Inventors: William David Hardgrave, Lanna Kay Hardgrave
  • Patent number: 6010239
    Abstract: The present invention provides apparatus and methodology for use of an automatic item-driven system for deposit and pick-up in a job-driven environment including access, instructions, item tracking, storage, billing, payment and delivery. The invention is also directed to an automatic deposit machine having logic which is item driven in a job-driven environment wherein automatic systems provide interface between job-driven services and user, as well as an operator's use of the automatic item-driven system to interface between the user either on site or remote locations. A continuous flow automatic deposit machine system provides for customer interface with the system, operator interface with the system and return of finished goods or job-related items to the customer; however, the flow provides various stops in the item, job-related environment due to insufficient information or inappropriate processing demands.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: January 4, 2000
    Inventors: William David Hardgrave, Lanna Kay Hardgrave