Patents by Inventor Diane R. McNickle
Diane R. McNickle 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: 8616554Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: GrantFiled: December 12, 2012Date of Patent: December 31, 2013Assignee: Stein Seal CompanyInventors: Thurai Manik Vasagar, Glenn M. Garrison, Alan D. McNickle, Diane R. McNickle
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Publication number: 20130113162Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: ApplicationFiled: December 12, 2012Publication date: May 9, 2013Applicant: Stein Seal CompanyInventors: Stein Seal Company, Diane R. McNickle
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Patent number: 8408556Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. Additional grooves are contained on the shaft-side face of each sealing ring segment. The additional grooves direct and create pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft.Type: GrantFiled: May 12, 2011Date of Patent: April 2, 2013Assignee: Stein Seal CompanyInventors: Thurai Manik Vasagar, Glenn M. Garrison, Diane R. McNickle
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Patent number: 8408554Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. Each additional groove may contain a pocket. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: GrantFiled: May 10, 2011Date of Patent: April 2, 2013Assignee: Stein Seal CompanyInventors: Thurai Manik Vasagar, Glenn M. Garrison, Diane R. McNickle
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Patent number: 8356819Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. Each additional groove is an axial bore groove extending perpendicularly to a longitudinal axis of the seal ring segment in fluid communication with the dead end circumferential groove so as to direct fluid flow generated from a rotating shaft into the dead end circumferential groove.Type: GrantFiled: May 11, 2011Date of Patent: January 22, 2013Assignee: Stein Seal CompanyInventors: Thurai Manik Vasagar, Glenn M. Garrison, Diane R. McNickle
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Patent number: 8342534Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: GrantFiled: May 9, 2011Date of Patent: January 1, 2013Assignee: Stein Seal CompanyInventors: Thurai Manik Vasagar, Glenn M. Garrison, Alan D. McNickle, Diane R. McNickle, legal representative
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Patent number: 8074995Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: GrantFiled: January 20, 2011Date of Patent: December 13, 2011Assignee: Stein Seal CompanyInventors: Thurai Manik Vasagar, Alan D. McNickle, Diane R. McNickle, legal representative, Glenn M. Garrison
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Publication number: 20110215535Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: ApplicationFiled: May 9, 2011Publication date: September 8, 2011Applicant: Stein Seal CompanyInventors: Thurai Manik Vasagar, Alan D. McNickle, Diane R. McNickle, Glenn M. Garrison
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Publication number: 20110210514Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. Each additional groove is an axial bore groove extending perpendicularly to a longitudinal axis of the seal ring segment in fluid communication with the dead end circumferential groove so as to direct fluid flow generated from a rotating shaft into the dead end circumferential groove.Type: ApplicationFiled: May 11, 2011Publication date: September 1, 2011Applicant: Stein Seal CompanyInventors: Thurai Manik Vasagar, Alan D. McNickle, Diane R. McNickle, Glenn M. Garrison
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Publication number: 20110210518Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. Additional grooves are contained on the shaft-side face of each sealing ring segment. The additional grooves direct and create pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft.Type: ApplicationFiled: May 12, 2011Publication date: September 1, 2011Applicant: Stein Seal CompanyInventors: Thurai Manik Vasagar, Glenn M. Garrison, Alan D. McNickle, Diane R. McNickle
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Publication number: 20110115164Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: ApplicationFiled: January 20, 2011Publication date: May 19, 2011Applicant: STEIN SEAL COMPANYInventors: Thurai Manik Vasagar, Alan D. McNickle, Glenn M. Garrison, Diane R. McNickle
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Publication number: 20080284105Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment.Type: ApplicationFiled: February 22, 2008Publication date: November 20, 2008Inventors: Thurai Manik VASAGAR, Alan D. McNickle, Diane R. McNickle, Glenn M. Garrison
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Publication number: 20080157479Abstract: An assembly for sealing a liquid region from a gas region across an annular surface of a rotating shaft in turbomachinery, having a plurality of annular sealing ring segments facing the rotating shaft, at least one sealing ring segment including a dead end annular groove formed in a radially inwardly facing bearing surface at a position closer to the liquid region than to the gas region when the segment is positioned proximate the shaft surface, the groove extending arcuately in the direction of shaft rotation, at least one diagonal groove formed in the segment bearing surface and extending from an edge of the segment proximate the gas region to a position of communication with the dead end annular groove that is downstream, from a mouth of the diagonal groove at the segment edge, with respect to rotary movement of the shaft along the segment bearing surface.Type: ApplicationFiled: June 21, 2007Publication date: July 3, 2008Inventors: Thurai Manik Vasagar, Alan D. McNickle, Glenn M. Garrison, Diane R. McNickle