Patents by Inventor Christopher Sellars

Christopher Sellars 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).

  • Patent number: 9010178
    Abstract: An erosion testing assembly adapted to test an abradable surface of a component, the testing assembly including: a shroud attachable to the component; the shroud being adapted to receive an erosion gun. The present disclosure also relates to a method of testing an abradable surface of a component, wherein the method includes: attaching a shroud to the component; connecting an erosion gun to the shroud; and testing the abradable surface with the erosion gun. The present disclosure may also relate to a method of testing an abradable surface of a component, wherein the method includes: using the component; and testing a portion of the abradable surface with an erosion gun after use of the component.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: April 21, 2015
    Assignee: Rolls-Royce PLC
    Inventors: Christopher Sellars, Andrew Hewitt
  • Patent number: 8677813
    Abstract: An apparatus (10) to test the adhesion strength and/or cohesive strength of a coating (12) comprises a first member (14) having an aperture (16) and a second member (18) locatable in the aperture (16) in the first member (14). A temperature sensor (20) is arranged to measure the temperature of the first member (14). A third member (22) and a fourth member (24) are mounted on the first member (14). The third member (22) has a first strain gauge (26) to measure the strain in a first direction and the fourth member (24) has a second strain gauge (28) to measure the strain in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: March 25, 2014
    Assignee: Rolls-Royce plc
    Inventors: Christopher Sellars, Andrew Hewitt
  • Patent number: 8650753
    Abstract: A seal (48) between a compressor rotor blade (26) and compressor casing (28) comprises an abradable structure (59) on the compressor casing (28). The abradable structure (59) comprises a metallic foam (60) having pores (66, 68). The metallic foam (60) has a first a region (62) and a second region (64). The first region (62) of the metallic foam (60) is arranged adjacent to the compressor casing (28) and the second region (64) of the metallic foam (60) is spaced from the compressor casing (28) by the first region (62) of the metallic foam (60). The pores (68) of the second region (64) of the metallic foam (60) contain an abradable material (70) and the pores (66) of the first region (62) of the metallic foam (60) do not contain an abradable material.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: February 18, 2014
    Assignee: Rolls-Royce, PLC
    Inventors: Christopher Sellars, Glen Pattinson, John T Gent
  • Publication number: 20120192629
    Abstract: An erosion testing assembly adapted to test an abradable surface of a component, the testing assembly including: a shroud attachable to the component; the shroud being adapted to receive an erosion gun. The present disclosure also relates to a method of testing an abradable surface of a component, wherein the method includes: attaching a shroud to the component; connecting an erosion gun to the shroud; and testing the abradable surface with the erosion gun. The present disclosure may also relate to a method of testing an abradable surface of a component, wherein the method includes: using the component; and testing a portion of the abradable surface with an erosion gun after use of the component.
    Type: Application
    Filed: January 24, 2012
    Publication date: August 2, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Christopher SELLARS, Andrew HEWITT
  • Publication number: 20110214497
    Abstract: An apparatus (10) to test the adhesion strength and/or cohesive strength of a coating (12) comprises a first member (14) having an aperture (16) and a second member (18) locatable in the aperture (16) in the first member (14). A temperature sensor (20) is arranged to measure the temperature of the first member (14). A third member (22) and a fourth member (24) are mounted on the first member (14). The third member (22) has a first strain gauge (26) to measure the strain in a first direction and the fourth member (24) has a second strain gauge (28) to measure the strain in a second direction perpendicular to the first direction.
    Type: Application
    Filed: February 10, 2011
    Publication date: September 8, 2011
    Applicant: ROLLS-ROYCE PLC
    Inventors: Christopher SELLARS, Andrew HEWITT
  • Publication number: 20100150730
    Abstract: The tips of gas turbine engine turbine rotor blades are provided with an abrasive layer and the abrasive layer comprises chromised silicon carbide grit protruding from a layer of material. In particular the abrasive layer comprises a mixture of cubic boron nitride grit and chromised silicon carbide grit and the cubic boron nitride grit and the chromised silicon carbide grit protruding from the layer of material. The cubic boron nitride grit has a greater dimension than the chromised silicon carbide grit. The cubic boron nitride grit cuts the majority of a track in an abradable structure and then the chromised silicon carbide grit provides any additional cutting of the abradable structure.
    Type: Application
    Filed: November 6, 2009
    Publication date: June 17, 2010
    Applicant: ROLLS-ROYCE PLC
    Inventors: Christopher Sellars, Matthew Hancock
  • Publication number: 20100143103
    Abstract: A seal (48) between a compressor rotor blade (26) and compressor casing (28) comprises an abradable structure (59) on the compressor casing (28). The abradable structure (59) comprises a metallic foam (60) having pores (66, 68). The metallic foam (60) has a first a region (62) and a second region (64). The first region (62) of the metallic foam (60) is arranged adjacent to the compressor casing (28) and the second region (64) of the metallic foam (60) is spaced from the compressor casing (28) by the first region (62) of the metallic foam (60). The pores (68) of the second region (64) of the metallic foam (60) contain an abradable material (70) and the pores (66) of the first region (62) of the metallic foam (60) do not contain an abradable material.
    Type: Application
    Filed: October 8, 2009
    Publication date: June 10, 2010
    Applicant: ROLLS-ROYCE PLC
    Inventors: Christopher Sellars, Glen Pattinson, John T. Gent
  • Publication number: 20040020959
    Abstract: A holder for articles comprising a pouch, a loop coupled to the pouch, and a fastener for coupling the loop to the pouch. Both the pouch and the loop can be made from flexible material. The pouch can have a back section and a front section and wherein this pouch can further comprise a backing element coupled to the back section of the pouch. The holder can also include body section disposed between the pouch the loop. The holder can also optionally include a backing element substantially enclosed in the body section of the holder. The backing element can be formed from a stiff material and can provide a stiff backing for the pouch. There can also be an optional additional fastener coupled to the body section on a side opposite the pouch. Another optional feature is a longitudinal fastener coupled to a front end of the body section. This longitudinal fastener can be used to allow a wire or a tube to be fastened to the body section of the holder.
    Type: Application
    Filed: June 30, 2003
    Publication date: February 5, 2004
    Inventor: Christopher Sellars
  • Patent number: 6612471
    Abstract: A device for holding objects in a pocket. This device comprises at least one plate that is made from a rigid material. Coupled to this plate is a patch for fixing the plate inside a user's pants. In addition, there is a clip that is coupled to this plate. This clip is either U-shaped or circular shaped. There can also be an additional clip that is coupled to the at least one plate. In another embodiment, there can be at least one additional plate that is connected to the at least one plate. This at least one additional plate couples to the at least one plate via a series of adjustable tracks having a lock. The tracks allow the device to be adjusted in length.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: September 2, 2003
    Inventor: Christopher Sellars
  • Publication number: 20030057241
    Abstract: A device for holding objects in a pocket. This device comprises at least one plate that is made from a rigid material. Coupled to this plate is a patch for fixing the plate inside a user's pants. In addition, there is a clip that is coupled to this plate. This clip is either U-shaped or circular shaped. There can also be an additional clip that is coupled to the at least one plate. In another embodiment, there can be at least one additional plate that is connected to the at least one plate. This at least one additional plate couples to the at least one plate via a series of adjustable tracks having a lock. The tracks allow the device to be adjusted in length.
    Type: Application
    Filed: November 26, 2001
    Publication date: March 27, 2003
    Inventor: Christopher Sellars