Patents by Inventor Geoffrey R. Robbins

Geoffrey R. Robbins 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).

  • Method of making an inflatable gas bag for use as a borehole plug
    Patent number: 6722105
    Abstract: A method for making a chemically inflatable gas bag using technical grade acetic acid, water, and sodium bicarbonate is provided. The method includes pouring diluted acetic acid into an HDPE bag, putting sodium bicarbonate into a PVA bag, sealing these bags, and placing these bags within a nylon/PE bag. The method further includes folding the gas bag in such a manner so that it easily inflates and completely seals the borehole.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: April 20, 2004
    Assignee: Stemlock, Incorporated
    Inventors: Sanford S. Jenkins, Thomas S. Jenkins, Geoffrey R. Robbins
  • Inflatable gas bag for use as a borehole plug
    Publication number: 20040007147
    Abstract: A chemically inflated gas bag for mining is provided. This gas bag includes a modified PVA bag that contains sodium bicarbonate and an HDPE bag that contains acetic acid. The PVA bag and the HDPE bag are contained within a nylon/PE bag. Preferably, when the HDPE bag is broken, the flow of acetic acid onto the PVA bag is controlled by a second bag having small holes therein surrounding the HDPE bag, allowing the gas bag to be lowered into a borehole before it inflates. Another aspect of the present invention is a method of making this gas bag. This method includes pouring diluted acetic acid into an HDPE bag, putting sodium bicarbonate into a PVA bag, sealing these bags, and placing these bags within a nylon/PE bag. The gas bag is folded in such a manner as to easily inflate and completely seal the borehole.
    Type: Application
    Filed: July 9, 2003
    Publication date: January 15, 2004
    Applicant: STEMLOCK, INCORPORATED
    Inventors: Sanford S. Jenkins, Thomas S. Jenkins, Geoffrey R. Robbins
  • Inflatable gas bag for use as a borehole plug
    Publication number: 20030177932
    Abstract: A method for making a chemically inflatable gas bag using technical grade acetic acid, water, and sodium bicarbonate is provided. The method includes pouring diluted acetic acid into an HDPE bag, putting sodium bicarbonate into a PVA bag, sealing these bags, and placing these bags within a nylon/PE bag. The method further includes folding the gas bag in such a manner so that it easily inflates and completely seals the borehole.
    Type: Application
    Filed: March 20, 2003
    Publication date: September 25, 2003
    Applicant: Stemlock, Incorporated
    Inventors: Sanford S. Jenkins, Thomas S. Jenkins, Geoffrey R. Robbins
  • Inflatable gas bag for use as a borehole plug
    Patent number: 6619387
    Abstract: A chemically inflated gas bag for mining is provided. This gas bag includes a modified PVA bag that contains sodium bicarbonate and an HDPE bag that contains acetic acid. The PVA bag and the HDPE bag are contained within a nylon/PE bag. Preferably, when the HDPE bag is broken, the flow of acetic acid onto the PVA bag is controlled by a second bag having small holes therein surrounding the HDPE bag, allowing the gas bag to be lowered into a borehole before it inflates. Another aspect of the present invention is a method of making this gas bag. This method includes pouring diluted acetic acid into an HDPE bag, putting sodium bicarbonate into a PVA bag, sealing these bags, and placing these bags within a nylon/PE bag. The gas bag is folded in such a manner as to easily inflate and completely seal the borehole.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: September 16, 2003
    Assignee: Stemlock, Incorporated
    Inventors: Sanford S. Jenkins, Thomas S. Jenkins, Geoffrey R. Robbins
  • Inflatable gas bag for use as a borehole plug
    Publication number: 20030047307
    Abstract: A chemically inflated gas bag for mining is provided. This gas bag includes a modified PVA bag that contains sodium bicarbonate and an HDPE bag that contains acetic acid. The PVA bag and the HDPE bag are contained within a nylon/PE bag. Preferably, when the HDPE bag is broken, the flow of acetic acid onto the PVA bag is controlled by a second bag having small holes therein surrounding the HDPE bag, allowing the gas bag to be lowered into a borehole before it inflates. Another aspect of the present invention is a method of making this gas bag. This method includes pouring diluted acetic acid into an HDPE bag, putting sodium bicarbonate into a PVA bag, sealing these bags, and placing these bags within a nylon/PE bag. The gas bag is folded in such a manner as to easily inflate and completely seal the borehole.
    Type: Application
    Filed: September 12, 2001
    Publication date: March 13, 2003
    Inventors: Sanford S. Jenkins, Thomas S. Jenkins, Geoffrey R. Robbins