Patents by Inventor Peter Francis Crudgington
Peter Francis Crudgington 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: 9915351Abstract: This invention relates to a seal for sealing between a stator and rotor, including a generally annular carrier, an array of adjacent leaves mounted in the annular carrier for sealing between the stator and the rotor with their panes lying parallel to the axis of the carrier and front and back plates disposed on respective axial sides of the leaves, characterized in the front and back plates have one or more apertures dimensioned for providing a substantially symmetric pressure drop across the leaves.Type: GrantFiled: May 13, 2013Date of Patent: March 13, 2018Assignee: CROSS MANUFACTURING COMPANY (1938) LIMITEDInventors: Aaron Bowsher, Peter Francis Crudgington
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Patent number: 8840113Abstract: A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterised in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack.Type: GrantFiled: January 26, 2012Date of Patent: September 23, 2014Assignee: Cross Manufacturing Company (1938) LimitedInventors: Peter Francis Crudgington, Aaron Bowsher
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Patent number: 8690160Abstract: A brush seal assembly including a pair of annular plates defining an annular slot between them and a radially outer chamber opening into the slot; and an annular brush seal having bristles and an enlarged portion at its outer periphery formed by welding the bristles together, the brush seal extending through the slot with its enlarged portion retained in the chamber wherein at least a portion of one of the plates has an extension thereof which is deformed over the other plate to hold the plates together to form the assembly characterized in that one of the plates has a flat face in the region of the slot.Type: GrantFiled: March 29, 2012Date of Patent: April 8, 2014Assignee: Cross Manufacturing Company (1938) LimitedInventor: Peter Francis Crudgington
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Publication number: 20130249169Abstract: This invention relates to a seal for sealing between a stator and rotor, including a generally annular carrier, an array of adjacent leaves mounted in the annular carrier for sealing between the stator and the rotor with their panes lying parallel to the axis of the carrier and front and back plates disposed on respective axial sides of the leaves, characterised in the front and back plates have one or more apertures dimensioned for providing a substantially symmetric pressure drop across the leaves.Type: ApplicationFiled: May 13, 2013Publication date: September 26, 2013Applicant: CROSS MANUFACTURING COMPANY (1938) LIMITEDInventors: Aaron Bowsher, Peter Francis Crudgington
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Patent number: 8439364Abstract: This invention relates to a seal for sealing between a stator and rotor, including a generally annular carrier (11), an array of adjacent leaves (12) mounted in the annular carrier for sealing between the stator and the rotor with their panes lying parallel to the axis of the carrier and front and back plates (15, 16) disposed on respective axial sides of the leaves, characterized in the front and back plates (15, 16) have one or more apertures (17, 18) dimensioned for providing a substantially symmetric pressure drop across the leaves.Type: GrantFiled: March 18, 2008Date of Patent: May 14, 2013Assignee: Cross Manufacturing Company (1938) LimitedInventors: Aaron Bowsher, Peter Francis Crudgington
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Publication number: 20120187635Abstract: A brush seal assembly including a pair of annular plates defining an annular slot between them and a radially outer chamber opening into the slot; and an annular brush seal having bristles and an enlarged portion at its outer periphery formed by welding the bristles together, the brush seal extending through the slot with its enlarged portion retained in the chamber wherein at least a portion of one of the plates has an extension thereof which is deformed over the other plate to hold the plates together to form the assembly characterised in th at one of the plates has a flat face in the region of the slot.Type: ApplicationFiled: March 29, 2012Publication date: July 26, 2012Inventor: Peter Francis Crudgington
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Patent number: 8191898Abstract: A brush seal assembly including a pair of annular plates defining an annular slot between them and a radially outer chamber opening into the slot; and an annular brush seal having bristles and an enlarged portion at its outer periphery formed by welding the bristles together, the brush seal extending through the slot with its enlarged portion retained in the chamber wherein at least a portion of one of the plates has an extension thereof which is deformed over the other plate to hold the plates together to form the assembly characterized in that one of the plates has a flat face in the region of the slot.Type: GrantFiled: February 4, 2011Date of Patent: June 5, 2012Assignee: Cross Manufacturing Company (1938) LimitedInventor: Peter Francis Crudgington
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Publication number: 20120126483Abstract: A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterised in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack.Type: ApplicationFiled: January 26, 2012Publication date: May 24, 2012Inventors: Peter Francis Crudgington, Aaron Bowsher
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Patent number: 8118310Abstract: A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterized in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack.Type: GrantFiled: September 11, 2009Date of Patent: February 21, 2012Assignee: Cross Manufacturing Company (1938) LimitedInventors: Peter Francis Crudgington, Aaron Bowsher
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Patent number: 7950671Abstract: A brush seal assembly including a pair of annular plates (11,12) defining an annular slot (14) between them and a radially outer chamber (15) opening into the slot (14); and an annular brush seal (13) having bristles (16) and an enlarged portion (17) at its outer periphery formed by welding the bristles (16) together, the brush seal (13) extending through the slot (14) with its enlarged portion (17) retained in the chamber (15) wherein at least a portion of one of the plates (11, 12) has an extension thereof which is deformed over the other plate (11, 12) to hold the plates (11, 12) together to form the assembly characterised in that one of the plates (12) has a flat face in the region of the slot (14).Type: GrantFiled: October 1, 2007Date of Patent: May 31, 2011Assignee: Cross Manufacturing Company (1938) LimitedInventor: Peter Francis Crudgington
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Publication number: 20110121517Abstract: A brush seal assembly including a pair of annular plates defining an annular slot between them and a radially outer chamber opening into the slot; and an annular brush seal having bristles and an enlarged portion at its outer periphery formed by welding the bristles together, the brush seal extending through the slot with its enlarged portion retained in the chamber wherein at least a portion of one of the plates has an extension thereof which is deformed over the other plate to hold the plates together to form the assembly characterised in that one of the plates has a flat face in the region of the slot.Type: ApplicationFiled: February 4, 2011Publication date: May 26, 2011Inventor: Peter Francis Crudgington
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Publication number: 20100032908Abstract: This invention relates to a seal for sealing between a stator and rotor, including a generally annular carrier (11), an array of adjacent leaves (12) mounted in the annular carrier for sealing between the stator and the rotor with their panes lying parallel to the axis of the carrier and front and back plates (15, 16) disposed on respective axial sides of the leaves, characterised in the front and back plates (15, 16) have one or more apertures (17, 18) dimensioned for providing a substantially symmetric pressure drop across the leaves.Type: ApplicationFiled: March 18, 2008Publication date: February 11, 2010Inventors: Aaron Bowsher, Peter Francis Crudgington
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Publication number: 20100001473Abstract: A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterised in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack.Type: ApplicationFiled: September 11, 2009Publication date: January 7, 2010Inventors: Peter Francis Crudgington, Aaron Bowsher
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Publication number: 20090224483Abstract: A brush seal assembly including a pair of annular plates (11,12) defining an annular slot (14) between them and a radially outer chamber (15) opening into the slot (14); and an annular brush seal (13) having bristles (16) and an enlarged portion (17) at its outer periphery formed by welding the bristles (16) together, the brush seal (13) extending through the slot (14) with its enlarged portion (17) retained in the chamber (15) wherein at least a portion of one of the plates (11, 12) has an extension thereof which is deformed over the other plate (11, 12) to hold the plates (11, 12) together to form the assembly characterised in that one of the plates (12) has a flat face in the region of the slot (14).Type: ApplicationFiled: October 1, 2007Publication date: September 10, 2009Inventor: Peter Francis Crudgington
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Publication number: 20090051117Abstract: This invention relates to sealing rings for sealing between relatively moveable parts of an engine. A sealing ring can is typically located in the groove 11 of a piston 12 to seal between the piston 12 and the cylinder wall 13. In a typical embodiment one end 18 of the ring in 10 is formed with a projecting tongue 19, whilst the other end 20 has a groove 21. In use, the tongue 19, lies within the groove 20 and the length of the tongue 19 and groove 21 are selected so that a part of the tongue 19 will remain within the groove 21 throughout any design thermal expansions or contraction of the ring 10.Type: ApplicationFiled: May 9, 2008Publication date: February 26, 2009Inventor: Peter Francis Crudgington
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Patent number: 6799766Abstract: A brush seal element is disclosed that includes an array of bristles and a backing member. The array of bristles extends across the face of the backing member and at least part of the surface of the face of the backing member is formed of or covered by a material which is tribologically matched, with at least the material of the bristles immediately adjacent the face. This allows the bristles to move on the material without inappropriate wear.Type: GrantFiled: January 24, 2003Date of Patent: October 5, 2004Assignee: Cross Manufacturing Company (1938) LimitedInventors: Peter Francis Crudgington, Aaron Bowsher
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Patent number: 6772482Abstract: A Brush Seal element 10 has a backing plate 11 designed to project into a gap 12 between a fixed sleeve 13 and a shaft 14 and a bristle array 15 comprising a pack of bristle layers which is held in the sleeve 13 by support 16. The bristle 15 and non-linear portion 17, 18, which define cavities 19 and 20 between the array 15 and the plate 10. These cavities can become filled with high pressure fluid so that there is a substantial pressure balance across the array 15.Type: GrantFiled: November 14, 2002Date of Patent: August 10, 2004Assignee: Cross Manufacturing Co. (1938) Ltd.Inventor: Peter Francis Crudgington
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Publication number: 20030141666Abstract: A brush seal element is disclosed that includes an array of bristles and a backing member. The array of bristles extends across the face of the backing member and at least part of the surface of the face of the backing member is formed of or covered by a material which is tribologically matched, with at least the material of the bristles immediately adjacent the face.Type: ApplicationFiled: January 24, 2003Publication date: July 31, 2003Inventors: Peter Francis Crudgington, Aaron Bowsher
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Publication number: 20030094764Abstract: A Brush Seal element 10 has a backing plate 11 designed to project into a gap 12 between a fixed sleeve 13 and a shaft 14 and a bristle array 15 comprising a pack of bristle layers which is held in the sleeve 13 by support 16. The bristle 15 and non-linear portion 17, 18, which define cavities 19 and 20 between the array 15 and the plate 10. These cavities can become filled with high pressure fluid so that there is a substantial pressure balance across the array 15.Type: ApplicationFiled: November 14, 2002Publication date: May 22, 2003Applicant: CROSS MANUFACTURING CO (1938) LTD.Inventor: Peter Francis Crudgington