Patents by Inventor Charles Free
Charles Free 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).
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Patent number: 11708919Abstract: A liner tube for lining a pipe and pipe lining method. Liner material that includes a strength layer and felt backing layer forms the liner tube. The strength layer includes chopped strands of fiber oriented generally parallel to one another and distributed along the strength layer. The felt backing layer can be needle punched to the strength layer. Joining structure can connect opposite longitudinal edge margins of the liner material to form a tube shape. The liner tube is impregnated with a curable polymer, positioned in the pipe, and cured to form the liner. The liner stretches radially when it is positioned in the pipe. As the liner stretches, the strength layer remains fixed to the felt backing and the width of the overlapping edge margins does not decrease.Type: GrantFiled: October 26, 2020Date of Patent: July 25, 2023Assignee: INA Acquisition Corp.Inventors: Charles Free, Yevgeny Zaltsman, Abu Abraham
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Patent number: 11384889Abstract: An eversion liner for lining a pipe includes an impermeable outer portion, inner and outer strength portions inside the impermeable outer portion, and a middle portion including at least one felt layer radially between the inner and outer strength portions. At least one of the inner and outer strength portions is formed from a unitary sheet of strength material that includes parallel chopped strands of fiber. The longitudinal edge margins of the sheet of strength material are positioned in overlapping engagement and joined together by joining structure. The parallel chopped fibers can be oriented transverse to the length of the liner. The joining structure can prevent reduction in a width of the overlapped edge margins as the liner expands during eversion.Type: GrantFiled: July 1, 2020Date of Patent: July 12, 2022Assignee: INA Acquisition Corp.Inventors: Charles Free, Abu Abraham, Yevgeny Eugene Zaltsman
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Patent number: 11173634Abstract: A liner for being cured by electromagnetic radiation having a wavelength in a curing range. The liner includes an outer portion. The outer portion includes a tube of impermeable material that is opaque to electromagnetic radiation having a wavelength in the curing range. An inner portion includes a tube of felt internally coated with an impermeable coating that is transparent to electromagnetic radiation having a wavelength in the curing range. The inner portion is inside the outer portion. A middle portion includes a tube of impregnable material between the inner and outer portions. Curable polymer that is curable by electromagnetic radiation having a wavelength in the curing range impregnates the felt and the impregnable material. Methods of manufacturing and installing the liner are also disclosed.Type: GrantFiled: February 1, 2018Date of Patent: November 16, 2021Assignee: INA Acquisition CorpInventors: Charles Free, Abu Abraham, Yevgeny Zaltsman, James Rothe
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Publication number: 20210041043Abstract: A liner tube for lining a pipe and pipe lining method. Liner material that includes a strength layer and felt backing layer forms the liner tube. The strength layer includes chopped strands of fiber oriented generally parallel to one another and distributed along the strength layer. The felt backing layer can be needle punched to the strength layer. Joining structure can connect opposite longitudinal edge margins of the liner material to form a tube shape. The liner tube is impregnated with a curable polymer, positioned in the pipe, and cured to form the liner. The liner stretches radially when it is positioned in the pipe. As the liner stretches, the strength layer remains fixed to the felt backing and the width of the overlapping edge margins does not decrease.Type: ApplicationFiled: October 26, 2020Publication date: February 11, 2021Inventors: Charles Free, Yevgeny Zaltsman, Abu Abraham
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Patent number: 10816112Abstract: A liner tube for lining a pipe and pipe lining method. Liner material that includes a strength layer and felt backing layer forms the liner tube. The strength layer includes chopped strands of fiber oriented generally parallel to one another and distributed along the strength layer. The felt backing layer can be needle punched to the strength layer. Joining structure can connect opposite longitudinal edge margins of the liner material to form a tube shape. The liner tube is impregnated with a curable polymer, positioned in the pipe, and cured to form the liner. The liner stretches radially when it is positioned in the pipe. As the liner stretches, the strength layer remains fixed to the felt backing and the width of the overlapping edge margins does not decrease.Type: GrantFiled: August 2, 2018Date of Patent: October 27, 2020Assignee: INA Acquisition Corp.Inventors: Charles Free, Yevgeny Zaltsman, Abu Abraham
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Publication number: 20200332940Abstract: An eversion liner for lining a pipe includes an impermeable outer portion, inner and outer strength portions inside the impermeable outer portion, and a middle portion including at least one felt layer radially between the inner and outer strength portions. At least one of the inner and outer strength portions is formed from a unitary sheet of strength material that includes parallel chopped strands of fiber. The longitudinal edge margins of the sheet of strength material are positioned in overlapping engagement and joined together by joining structure. The parallel chopped fibers can be oriented transverse to the length of the liner. The joining structure can prevent reduction in a width of the overlapped edge margins as the liner expands during eversion.Type: ApplicationFiled: July 1, 2020Publication date: October 22, 2020Applicant: INA ACQUISITION CORP.Inventors: Charles Free, Abu Abraham, Yevgeny Eugene Zaltsman
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Patent number: 10704728Abstract: An eversion liner for lining a pipe includes an impermeable outer portion, inner and outer strength portions inside the impermeable outer portion, and a middle portion including at least one felt layer radially between the inner and outer strength portions. At least one of the inner and outer strength portions is formed from a unitary sheet of strength material that includes parallel chopped strands of fiber. The longitudinal edge margins of the sheet of strength material are positioned in overlapping engagement and joined together by joining structure. The parallel chopped fibers can be oriented transverse to the length of the liner. The joining structure can prevent reduction in a width of the overlapped edge margins as the liner expands during eversion.Type: GrantFiled: March 20, 2018Date of Patent: July 7, 2020Assignee: INA Acquisition Corp.Inventors: Charles Free, Abu Abraham, Yevgeny Eugene Zaltsman
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Publication number: 20190293223Abstract: An eversion liner for lining a pipe includes an impermeable outer portion, inner and outer strength portions inside the impermeable outer portion, and a middle portion including at least one felt layer radially between the inner and outer strength portions. At least one of the inner and outer strength portions is formed from a unitary sheet of strength material that includes parallel chopped strands of fiber. The longitudinal edge margins of the sheet of strength material are positioned in overlapping engagement and joined together by joining structure. The parallel chopped fibers can be oriented transverse to the length of the liner. The joining structure can prevent reduction in a width of the overlapped edge margins as the liner expands during eversion.Type: ApplicationFiled: March 20, 2018Publication date: September 26, 2019Applicant: INA ACQUISITION CORP.Inventors: Charles Free, Abu Abraham, Yevgeny Eugene Zaltsman
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Publication number: 20190232532Abstract: A liner for being cured by electromagnetic radiation having a wavelength in a curing range. The liner includes an outer portion. The outer portion includes a tube of impermeable material that is opaque to electromagnetic radiation having a wavelength in the curing range. An inner portion includes a tube of felt internally coated with an impermeable coating that is transparent to electromagnetic radiation having a wavelength in the curing range. The inner portion is inside the outer portion. A middle portion includes a tube of impregnable material between the inner and outer portions. Curable polymer that is curable by electromagnetic radiation having a wavelength in the curing range impregnates the felt and the impregnable material. Methods of manufacturing and installing the liner are also disclosed.Type: ApplicationFiled: February 1, 2018Publication date: August 1, 2019Applicant: INA Acquisition Corp.Inventors: Charles Free, Abu Abraham, Yevgeny Zaltsman, James Rothe
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Publication number: 20180340633Abstract: A liner tube for lining a pipe and pipe lining method. Liner material that includes a strength layer and felt backing layer forms the liner tube. The strength layer includes chopped strands of fiber oriented generally parallel to one another and distributed along the strength layer. The felt backing layer can be needle punched to the strength layer. Joining structure can connect opposite longitudinal edge margins of the liner material to form a tube shape. The liner tube is impregnated with a curable polymer, positioned in the pipe, and cured to form the liner. The liner stretches radially when it is positioned in the pipe. As the liner stretches, the strength layer remains fixed to the felt backing and the width of the overlapping edge margins does not decrease.Type: ApplicationFiled: August 2, 2018Publication date: November 29, 2018Inventors: Charles Free, Yevgeny Zaltsman, Abu Abraham
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Patent number: 10077855Abstract: A liner tube for lining a pipe and pipe lining method. Liner material that includes a strength layer and felt backing layer forms the liner tube. The strength layer includes chopped strands of fiber oriented generally parallel to one another and distributed along the strength layer. The felt backing layer can be needle punched to the strength layer. Joining structure can connect opposite longitudinal edge margins of the liner material to form a tube shape. The liner tube is impregnated with a curable polymer, positioned in the pipe, and cured to form the liner. The liner stretches radially when it is positioned in the pipe. As the liner stretches, the strength layer remains fixed to the felt backing and the width of the overlapping edge margins does not decrease.Type: GrantFiled: September 22, 2015Date of Patent: September 18, 2018Assignee: INA Acquisition Corp.Inventors: Charles Free, Yevgeny Zaltsman, Abu Abraham
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Publication number: 20170082220Abstract: A liner tube for lining a pipe and pipe lining method. Liner material that includes a strength layer and felt backing layer forms the liner tube. The strength layer includes chopped strands of fiber oriented generally parallel to one another and distributed along the strength layer. The felt backing layer can be needle punched to the strength layer. Joining structure can connect opposite longitudinal edge margins of the liner material to form a tube shape. The liner tube is impregnated with a curable polymer, positioned in the pipe, and cured to form the liner. The liner stretches radially when it is positioned in the pipe. As the liner stretches, the strength layer remains fixed to the felt backing and the width of the overlapping edge margins does not decrease.Type: ApplicationFiled: September 22, 2015Publication date: March 23, 2017Inventors: Charles Free, Yevgeny Zaltsman, Abu Abraham