Patents by Inventor Brian A. Varney

Brian A. Varney 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).

  • Combustion chamber
    Patent number: 6513334
    Abstract: A three stage lean burn combustion chamber (28) comprises a primary combustion zone (36), a secondary combustion zone (40) and a tertiary combustion zone (44). Each of the combustion zones (36, 40, 44) is supplied with premixed fuel and air by respective fuel and air mixing ducts (76, 78, 80, 92). Secondary fuel injectors (106) and two secondary fuel manifolds (105A, 105B) supply fuel into different circumferential sectors, halves, of the secondary fuel and air mixing duct (80). The secondary fuel manifolds (105A, 105B) have secondary fuel valves (107A, 107B) which supply a greater proportion of fuel to the secondary fuel manifold (105A) than the secondary fuel manifold (105B) so that there is circumferential biasing of fuel in the secondary combustion zone (40). This circumferential biasing of fuel in the secondary combustion zone (40) reduces the generation of harmful pressure oscillations in the combustion chamber (28).
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: February 4, 2003
    Assignee: Rolls-Royce plc
    Inventor: Brian A. Varney
  • Combustion chamber
    Publication number: 20020020173
    Abstract: A three stage lean burn combustion chamber (28) comprises a primary combustion zone (36), a secondary combustion zone (40) and a tertiary combustion zone (44). Each of the combustion zones (36,40,44) is supplied with premixed fuel and air by respective fuel and air mixing ducts (76,78,80,92). Secondary fuel injectors (106) and two secondary fuel manifolds (105A, 105B) supply fuel into different circumferential sectors, halves, of the secondary fuel and air mixing duct (80). The secondary fuel manifolds (105A, 105B) have secondary fuel valves (107A,107B) which supply a greater proportion of fuel to the secondary fuel manifold (105A) than the secondary fuel manifold (105B) so that there is circumferential biasing of fuel in the secondary combustion zone (40). This circumferential biasing of fuel in the secondary combustion zone (40) reduces the generation of harmful pressure oscillations in the combustion chamber (28).
    Type: Application
    Filed: July 25, 2001
    Publication date: February 21, 2002
    Inventor: Brian A. Varney
  • Swag
    Patent number: 5094006
    Abstract: A swag (10) for decorative use in curtaining is made using a template (11) which may be of rigid sheet material and formed by two side edges (14), each bearing deep cut-outs (15, 16 . . . ) and projections (17). The side edges taper outwardly from top to bottom and their separation, but not their inclination, can be adjusted using an adjustable slide (22) having a scale (24).
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: March 10, 1992
    Assignee: Parkhill Blinds and Curtains Limited
    Inventor: Brian A. Varney