Patents by Inventor David A. Potts

David A. Potts 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: 20060182497
    Abstract: A leaching device having slots to frictionally engage soil to permit the introduction of water through the slots and into the soil while prohibiting the excessive passage of soil particles through the slots. A method of introducing water into soil by passing water through slots that frictionally engage soil to permit water to pass through the slots and which prohibits the excessive passing of soil particles through the slots.
    Type: Application
    Filed: February 14, 2006
    Publication date: August 17, 2006
    Inventor: David Potts
  • Publication number: 20060116176
    Abstract: An alert apparatus for connection to a cellular telephone for alerting approaching persons that the user of the cellular telephone is speaking on the telephone and is thus occupied, the apparatus including an apparatus connecting means for connecting to the cellular telephone circuit; an apparatus circuit extending from the apparatus connecting means and including an apparatus power source, active circuit detection means connected to the connecting means for detecting when the telephone microphone is operational and for sending an actuating signal only when the telephone microphone is operational, alerting means connected to the detection means for receiving the actuating signal from the detection means and thereupon generating a bystander alert when the telephone microphone is operational.
    Type: Application
    Filed: August 8, 2005
    Publication date: June 1, 2006
    Inventors: David Shenkman, David Potts
  • Publication number: 20050284811
    Abstract: A method for treating wastewater. The method comprises: providing a first dose of air to aerate a medium bed; supplying a dose of wastewater to the aerated medium bed; allowing nitrification of the wastewater to occur; allowing denitrification to occur; and providing a subsequent dose of air to the medium bed. A combined aerobic and anaerobic treatment apparatus. The apparatus comprises: a medium bed; a wastewater conduit in fluid communication with the medium bed; an air conduit in fluid communication with the medium bed; and where the combined aerobic and anaerobic treatment apparatus is configured to first allow a dose of wastewater in the medium bed to undergo a nitrification process which is generally aerobic, and then second allow the dose of wastewater in the medium bed to undergo a denitrification process which is generally anaerobic. An apparatus for treating wastewater.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 29, 2005
    Inventor: David Potts
  • Publication number: 20050269253
    Abstract: A leaching conduit comprising: a low aspect ratio channel; a pipe in fluid communication with the low aspect ratio channel; wherein the aspect ratio of the low aspect channel is configured to promote aerobic conditions in and around the leaching conduit. A wastewater system comprising: a processing tank; a leaching conduit in fluid communication with a dosing device; wherein the leaching conduit comprises: a low aspect ratio channel; a dosing pipe in fluid communication with the low aspect ratio channel; and wherein the aspect ratio of the low aspect channel is configured to promote aerobic conditions in and around the leaching conduit. A dosing pipe comprising: a perforated tube; and a slotted sleeve located over the perforated tube. A slotted sleeve configured to fit over a perforated tube.
    Type: Application
    Filed: June 3, 2005
    Publication date: December 8, 2005
    Inventor: David Potts
  • Patent number: 6969464
    Abstract: A leach field of a sewage system is dewatered, to restore its function when it is at or near failure. In various embodiments, water is withdrawn from the points in the leach field, preferably from the conduits, by means of suction or sub-atmospheric pressure. As water is drawn from the soil, air from the atmosphere or from an air mover enters resultant spaces in the soil, to restore the influence zone and better treat waste water. Forced air flow is used to fissure the soil, to aid dewatering, and separately, to restore the leach field.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: November 29, 2005
    Inventor: David A. Potts
  • Publication number: 20050256471
    Abstract: The present invention provides a substrate treated with an linked enzyme. It has been discovered that a substrate treated with a linked enzyme can be effective in improving the ability of the substrate to absorb viscoelastic materials, such as menses, by cleaving a protein structure present in some viscoelastic materials. In addition, the linked enzyme is less likely to migrate from the treated material onto the user, as compare to an enzyme being placed directly on the substrate, thereby reducing the risk of sensitization to the user of the absorbent product. Also provided by the present invention are absorbent articles which contain at least one surface or layer containing the linked enzyme.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 17, 2005
    Inventors: Karyn Dibb, David Potts, Jack Lindon, Alice Romans-Hess
  • Patent number: 6959882
    Abstract: When the dripline used for watering soil, low pressure air in the range 10–100 inch water column is flowed through a buried dripline, in alternation of with flow of water at 5 psig or more. The flow of air provides oxygen to the soil, and more widely and evenly disperses the water within the soil, and impedes or counters saturation. A buried dripline runs in a U-shape path, so that low pressure and flow of air from emitters near the dripline terminal end is compensated for by higher pressure and flow of air near the inlet end. Flow of low pressure air or other gas, which pushes water from the dripline and surrounding soil, enables use of driplines in soil subject to freezing.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: November 1, 2005
    Inventor: David A. Potts
  • Publication number: 20050218384
    Abstract: A jack includes a base having a pair of spaced apart side members with a substantially horizontally oriented platform overlying a forward portion of the base. A pair of support arms pivotably connect the platform to the side members, and a lift arm is pivotably connected between the platform and the side members. A driver assembly mounted to a rear portion of the base in response to manual actuation moves the platform between a lowered and a plurality elevated positions while maintaining the horizontal orientation of the platform.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 6, 2005
    Inventors: Hector Hernandez, David Potts
  • Patent number: 6923905
    Abstract: The performance of a leach field of a septic tank type wastewater treatment system and other analogous devices is enhanced, maintained or rejuvenated by flowing air or other active gas through conduits of the system. Air is flowed serially through leaching chambers, perforated pipes in stone filled trenches, pits and the like, and the adjacent soil where wastewater treatment takes place. In alternate embodiments, conduits are pressurized or evacuated; and, auxiliary pipes are buried in vicinity of the conduits. An air mover creates a differential pressure sufficient to effect a desired physical or biochemical change in the soil adjacent the conduits, variously to to an extent sufficient to push water from saturated soil and to change the gas composition in the soil. Different valve devices and piping configurations are used to manage the desired flow of air and wastewater.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: August 2, 2005
    Inventor: David A. Potts
  • Publication number: 20050136155
    Abstract: The present invention provides an infusion beverage package having a good balance of properties including, being biodegradable, good tensile strength and a short infusion times, while being transparent enough so as to enable a user of the package to see the contained infusion beverage precursor within the package before infusing the package into water. The infusion beverage package of the present invention is prepared from a porous web derived from a biodegradable thermoplastic polymer, wherein the package has a transparency of at least about 30%, a tensile strength of at least about 2N/15 mm, and an infusion time of less than about 20 seconds. In addition, the seal strength of the package is at least 2N/15 mm.
    Type: Application
    Filed: December 22, 2003
    Publication date: June 23, 2005
    Inventors: Joy Jordan, David Strack, Anne Seters, David Potts, Rowland McClellan
  • Patent number: 6887383
    Abstract: The performance of a leach field of a septic tank type wastewater treatment system and other analogous devices is enhanced, maintained or rejuvenated by flowing air or other active gas through conduits of the system. Air is flowed serially through cesspools, leaching chambers, perforated pipes in stone filled trenches, leach pits and the like, and the adjacent soil where wastewater treatment takes place. In alternate embodiments, conduits are pressurized or evacuated; and, auxiliary pipes are buried in vicinity of the conduits. An air mover creates a differential pressure sufficient to effect a significant pressure differential with atmosphere and to effect a desired physical or biochemical change in the soil adjacent the conduits. A typical pressure will be around 7-8 cm (about 3 inch) water column. If the soil is saturated, the air pressure will push water from the soil, as well as change the gas composition in the soil. The flow of wastewater may be alternated with the flow of air.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: May 3, 2005
    Inventor: David A. Potts
  • Publication number: 20050007566
    Abstract: A viewing device having a series of images, the images arranged to be viewed through a viewing means, the viewing means having a series of lens, the lens and images being provided in a common geometrical configuration and, for viewing, fixed with respect to one another. Relative movement between the viewing device and the observer's eye allows the sequential viewing of the images through the lens to provide an animation effect.
    Type: Application
    Filed: November 6, 2003
    Publication date: January 13, 2005
    Inventors: David Burder, Michael Hutley, David Potts
  • Patent number: 6814866
    Abstract: The leach field of a septic type sewage system is heated by various means, to raise the temperature and increase biochemical activity in the influence zone of leach field conduits. The capacity for waste water treatment is thus increased or restored. Heating is achieved by alternative means, including by flowing hot air through the leach field conduit and into the influence zone, and by delivering heat directly to the influence zone by means of heat elements embedded in or near the influence zone. The temperature in the influence zone is raised by 1-5° F. or more, preferably to the range 50-100° F. A dedicated, non-dedicated or geothermal heat source may be used. Heat loss upwardly through the soil is inhibited by insulation on the soil surface.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: November 9, 2004
    Inventor: David A. Potts
  • Publication number: 20040195177
    Abstract: The performance of a leach field of a septic tank type wastewater treatment system and other analogous devices is enhanced, maintained or rejuvenated by flowing air or other active gas through conduits of the system. Air is flowed serially through cesspools, leaching chambers, perforated pipes in stone filled trenches, leach pits and the like, and the adjacent soil where wastewater treatment takes place. In alternate embodiments, conduits are pressurized or evacuated; and, auxiliary pipes are buried in vicinity of the conduits. An air mover creates a differential pressure sufficient to effect a significant pressure differential with atmosphere and to effect a desired physical or biochemical change in the soil adjacent the conduits. A typical pressure will be around 7-8 cm (about 3 inch) water column. If the soil is saturated, the air pressure will push water from the soil, as well as change the gas composition in the soil. The flow of wastewater may be alternated with the flow of air.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 7, 2004
    Inventor: David A. Potts
  • Publication number: 20040195159
    Abstract: The performance of a leach field of a septic tank type wastewater treatment system and other analogous devices is enhanced, maintained or rejuvenated by flowing air or other active gas through conduits of the system. Air is flowed serially through leaching chambers, perforated pipes in stone filled trenches, pits and the like, and the adjacent soil where wastewater treatment takes place. In alternate embodiments, conduits are pressurized or evacuated; and, auxiliary pipes are buried in vicinity of the conduits. An air mover creates a differential pressure sufficient to effect a desired physical or biochemical change in the soil adjacent the conduits, variously to to an extent sufficient to push water from saturated soil and to change the gas composition in the soil. Different valve devices and piping configurations are used to manage the desired flow of air and wastewater.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 7, 2004
    Inventor: David A. Potts
  • Patent number: 6726401
    Abstract: The performance of a leach field in processing waste water is maintained or improved by a control system in which one or more selected parameter in a waste water conduit, or in the influence zone of the conduit, is measured, compared to a set point(s), and one or more variable is manipulated. For example, gas composition, gas pressure, water level and water content are measured; waste water flow, heating, air flow and air composition are changed. In one mode of operation the manipulated variable is qualitatively different from the parameter being measured.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: April 27, 2004
    Inventor: David A. Potts
  • Publication number: 20040053205
    Abstract: Flush preservation solution for the preservation of cells in the absence of a blood supply comprising:
    Type: Application
    Filed: August 5, 2003
    Publication date: March 18, 2004
    Inventors: David Potts, Jeremy Peter Alan Lodge
  • Publication number: 20030224838
    Abstract: A communication system for a mask including an externally mounted microphone and ear speaker assembly is provided. The microphone and ear speaker assembly are adapted for electrical interconnection with a radio. A lapel microphone assembly optionally including a transmission activation device, a microphone, a speaker and an amplifier may be included. An interconnection cable connecting the microphone and ear speaker assembly to a lapel microphone assembly facilitates connection and disconnection between the assemblies.
    Type: Application
    Filed: July 18, 2002
    Publication date: December 4, 2003
    Inventors: Greg Skillicorn, Joseph Birli, David Potts, Jonathan D. Adams
  • Publication number: 20030173293
    Abstract: The performance of a leach field of a septic tank type wastewater treatment system and other analogous devices is enhanced, maintained or rejuvenated by flowing air or other active gas through conduits of the system. Air is flowed serially through cesspools, leaching chambers, perforated pipes in stone filled trenches, leach pits and the like, and the adjacent soil where wastewater treatment takes place. In alternate embodiments, conduits are pressurized or evacuated; and, auxiliary pipes are buried in vicinity of the conduits. An air mover creates a differential pressure sufficient to effect a significant pressure differential with atmosphere and to effect a desired physical or biochemical change in the soil adjacent the conduits. A typical pressure will be around 7-8 cm (about 3 inch) water column. If the soil is saturated, the air pressure will push water from the soil, as well as change the gas composition in the soil. The flow of wastewater may be alternated with the flow of air.
    Type: Application
    Filed: November 12, 2002
    Publication date: September 18, 2003
    Inventor: David A. Potts
  • Publication number: 20030070985
    Abstract: The performance of a leach field of a septic tank type wastewater treatment system and other analogous devices is enhanced, maintained or rejuvenated by flowing air or other active gas through conduits of the system. Air is flowed serially through leaching chambers, perforated pipes in stone filled trenches, pits and the like, and the adjacent soil where wastewater treatment takes place. In alternate embodiments, conduits are pressurized or evacuated; and, auxiliary pipes are buried in vicinity of the conduits. An air mover creates a differential pressure sufficient to effect a desired physical or biochemical change in the soil adjacent the conduits, variously to to an extent sufficient to push water from saturated soil and to change the gas composition in the soil. Different valve devices and piping configurations are used to manage the desired flow of air and wastewater.
    Type: Application
    Filed: November 1, 2002
    Publication date: April 17, 2003
    Inventor: David A. Potts