Patents by Inventor Andrew Stevenson

Andrew Stevenson 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: 9772218
    Abstract: A weighing device is disclosed including a motor that can be used to rotate a drive head. The drive head supports a cylindrical spindle having a plurality of holes or recesses. The spindle is configured so that it can be easily removed from the rotatable drive head and placed on a load sensor that can be used for weighing the device. In use a blister strip (not shown) can be loaded onto the spindle. An evacuation unit is provided with a pair of cutting blades. The load sensor can determine a first measurement of weight when the blisters are full of powder and a second measurement of weight after the evacuation unit has been used to evacuate receptacles supported on the spindle.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: September 26, 2017
    Assignee: MOLINS PLC
    Inventors: Alex Jezequel, Andrew Stevenson
  • Publication number: 20170268781
    Abstract: A combustion staging system includes a splitting unit which receives a metered fuel flow and controllably splits the received fuel flow into pilot and mains flows. Pilot and mains fuel manifolds distribute fuel from the splitting unit to the pilot and mains stages. The splitting unit selects and deselects pilot-only operation. Both pilot and mains manifolds are selectable for pilot and mains operation. A cooling flow recirculation line has a delivery section arranged to provide a cooling flow of fuel to the mains manifold when it is deselected during pilot-only operation. Cooling flow enters the delivery section from a high pressure fuel zone of the engine and exits the return section to a low pressure fuel zone of the engine. A controller adjusts the splitting unit during pilot-only operation to partially select the mains manifold thereby increasing the pressure in the mains manifold to meet a target fuel pressure therein.
    Type: Application
    Filed: February 10, 2017
    Publication date: September 21, 2017
    Applicant: ROLLS-ROYCE plc
    Inventors: Andrew STEVENSON, Graham THOMPSON
  • Patent number: 9689513
    Abstract: The present invention provides a tubular article (10), such as may be used as an oil and gas pipeline, having a longitudinal axis X comprising inner and outer separate strips (12, 14) of spirally wound overlapping material each having a longitudinal axis L and first and second edges (16, 18, 16?, 18?), in which each strip (12, 14) comprises two or more longitudinally extending ridges (20, 22, 20?, 22?), each of which extends along said longitudinally extending axis L in parallel to each other and in which said ridges (20, 22, 20?, 22?) each comprise asymmetric ridges having a leading edge (24, 24?) forming a contact portion (28, 28?) and wherein said leading edges (24, 24?) are each in contact with each other and further comprising a non-contact trailing edge portion (26, 26?) which are spaced from each other by an amount G.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: June 27, 2017
    Assignee: ITI SCOTLAND LIMITED
    Inventor: Andrew Stevenson
  • Patent number: 9581088
    Abstract: A control system is provided for performing staging control of a multi-stage combustor of a gas turbine engine. The fuel is fed to the combustor by a fuel supply system comprising: a plurality of fuel manifolds distributing fuel to respective stages of the combustor, a fuel metering valve operable to control the rate at which fuel passes to the fuel manifolds, and an actuating arrangement which splits the fuel flow from the fuel metering valve between the fuel manifolds. The control system includes a fuel pressure sensor arrangement which senses the fuel pressure at entry to the actuating arrangement, and/or in one or more of the fuel manifolds. The control system further includes a controller which repeatedly: calculates a fuel split between the fuel manifolds based on the sensed fuel pressure(s), and issues a command signal to the actuating arrangement to implement the calculated fuel pressure-based fuel split.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: February 28, 2017
    Assignee: ROLLS-ROYCE plc
    Inventors: Yong Qin, Andrew Stevenson
  • Patent number: 9550569
    Abstract: A frame has a first frame portion configured to sit on a base of a vehicle seat and demountably receive a machine. A second portion of frame is coupled with and extends substantially upright from the first portion. The second portion is adjacent and bears against a back of the seat. Extending across the second portion from side to side is a lateral frame element. The lateral frame element enables the frame to be secured on and to the seat by way of a conventional seat belt. The frame also includes a pivoting support shown in this embodiment as a tray for supporting a box of capsules which are dispensed by the machine.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: January 24, 2017
    Assignee: Raindance Systems Pty Ltd.
    Inventor: Robert Andrew Stevenson
  • Patent number: 9233786
    Abstract: A method of fabricating a belt of capsules comprising: providing a first strip of material, forming a matrix of receptacles in the first strip, depositing a quantity of at least one material in each receptacle, attaching a second strip of material over the first strip to close the receptacles and form a matrix of capsules, and cutting the matrix of capsules into rows to thereby form a plurality of belts of capsules.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: January 12, 2016
    Assignee: RAINDANCE SYSTEMS PTY LTD
    Inventor: Robert Andrew Stevenson
  • Publication number: 20150268088
    Abstract: A weighing device is disclosed including a motor that can be used to rotate a drive head. The drive head supports a cylindrical spindle having a plurality of holes or recesses. The spindle is configured so that it can be easily removed from the rotatable drive head and placed on a load sensor that can be used for weighing the device. In use a blister strip (not shown) can be loaded onto the spindle. An evacuation unit is provided with a pair of cutting blades. The load sensor can determine a first measurement of weight when the blisters are full of powder and a second measurement of weight after the evacuation unit has been used to evacuate receptacles supported on the spindle.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Inventors: Alex Jezequel, Andrew Stevenson
  • Publication number: 20150027100
    Abstract: A control system is provided for performing staging control of a multi-stage combustor of a gas turbine engine. The fuel is fed to the combustor by a fuel supply system comprising: a plurality of fuel manifolds distributing fuel to respective stages of the combustor, a fuel metering valve operable to control the rate at which fuel passes to the fuel manifolds, and an actuating arrangement which splits the fuel flow from the fuel metering valve between the fuel manifolds. The control system includes a fuel pressure sensor arrangement which senses the fuel pressure at entry to the actuating arrangement, and/or in one or more of the fuel manifolds. The control system further includes a controller which repeatedly: calculates a fuel split between the fuel manifolds based on the sensed fuel pressure(s), and issues a command signal to the actuating arrangement to implement the calculated fuel pressure-based fuel split.
    Type: Application
    Filed: June 4, 2014
    Publication date: January 29, 2015
    Inventors: Yong QIN, Andrew STEVENSON
  • Patent number: 8935975
    Abstract: An incendiary machine (10) comprises a feed and dispensing system (12), a priming system (20) and a control system. The feed and dispensing system (12) feeds a belt (14) of incendiary capsules (16) to a region at which individual capsules are separated from the belt and dispensed from the machine (10). The priming system (20) primes the capsule (16) prior to being dispensed from the machine (10) with a priming liquid which, when delivered into a capsule, facilitates an exothermic reaction. The control system controls the feed and dispensing system (12), and the priming system (20) independently of each other so that the belt (14) can be fed into and indeed thought the machine (10) with the priming liquid being injected into the capsules.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: January 20, 2015
    Assignee: Raindance Systems Pty Ltd
    Inventor: Robert Andrew Stevenson
  • Publication number: 20140318663
    Abstract: The present invention provides a tubular article (10), such as may be used as an oil and gas pipeline, having a longitudinal axis X comprising inner and outer separate strips (12, 14) of spirally wound overlapping material each having a longitudinal axis L and first and second edges (16, 18, 16?, 18?), in which each strip (12, 14) comprises two or more longitudinally extending ridges (20, 22, 20?, 22?), each of which extends along said longitudinally extending axis L in parallel to each other and in which said ridges (20, 22, 20?, 22?) each comprise asymmetric ridges having a leading edge (24, 24?) forming a contact portion (28, 28?) and wherein said leading edges (24, 24?) are each in contact with each other and further comprising a non-contact trailing edge portion (26, 26?) which are spaced from each other by an amount G.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 30, 2014
    Inventor: Andrew Stevenson
  • Publication number: 20140175136
    Abstract: A frame has a first frame portion configured to sit on a base of a vehicle seat and demountably receive a machine. A second portion of frame is coupled with and extends substantially upright from the first portion. The second portion is adjacent and bears against a back of the seat. Extending across the second portion from side to side is a lateral frame element. The lateral frame element enables the frame to be secured on and to the seat by way of a conventional seat belt. The frame also includes a pivoting support shown in this embodiment as a tray for supporting a box of capsules which are dispensed by the machine.
    Type: Application
    Filed: February 27, 2014
    Publication date: June 26, 2014
    Applicant: Raindance Systems Pty Ltd
    Inventor: Robert Andrew Stevenson
  • Patent number: 8601929
    Abstract: An incendiary dispensing system (10) comprises a casing (12), a supply (16) of incendiary capsules (18), an apparatus (14) for initiating and dispensing the incendiary capsules (18), and a loading mechanism (20). The casing (12) can be opened and closed to enable loading of the supply (16) of incendiary capsules (18). The casing (12) is provided with an aperture (22) to allow the dispensing of initiated capsules (18). The capsules (18) are formed as series connected belts (24). The loading mechanism (20) sequentially feeds the belts (24) to the apparatus (14) which initiates each incendiary and dispense the incendiary from the opening (22). The casing (12) is arranged for external mounting on an aircraft and may be ejected in the event of a malfunction.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: December 10, 2013
    Assignee: Raindance Systems Pty Ltd.
    Inventor: Robert Andrew Stevenson
  • Publication number: 20130206913
    Abstract: A method of fabricating a belt of capsules comprising: providing a first strip of material, forming a matrix of receptacles in the first strip, depositing a quantity of at least one material in each receptacle, attaching a second strip of material over the first strip to close the receptacles and form a matrix of capsules, and cutting the matrix of capsules into rows to thereby form a plurality of belts of capsules.
    Type: Application
    Filed: August 24, 2011
    Publication date: August 15, 2013
    Inventor: Robert Andrew Stevenson
  • Patent number: D781581
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: March 21, 2017
    Assignee: PAUL SMITH GROUP HOLDINGS LIMITED
    Inventors: Zoe Barclay, Sara Lopez, Rosie Davis, Tanya Chancellor, Andrew Stevenson
  • Patent number: D803557
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: November 28, 2017
    Assignee: PAUL SMITH GROUP HOLDINGS LIMITED
    Inventors: Zoe Barclay, Sara Lopez, Rosie Davis, Tanya Chancellor, Andrew Stevenson
  • Patent number: D804172
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 5, 2017
    Assignee: PAUL SMITH GROUP HOLDINGS LIMITED
    Inventors: Zoe Barclay, Sara Lopez, Rosie Davis, Tanya Chancellor, Andrew Stevenson
  • Patent number: D804173
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 5, 2017
    Assignee: PAUL SMITH GROUP HOLDINGS LIMITED
    Inventors: Zoe Barclay, Sara Lopez, Rosie Davis, Tanya Chancellor, Andrew Stevenson
  • Patent number: D805296
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: December 19, 2017
    Assignee: PAUL SMITH GROUP HOLDINGS LIMITED
    Inventors: Zoe Barclay, Sara Lopez, Rosie Davis, Tanya Chancellor, Andrew Stevenson
  • Patent number: D805297
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: December 19, 2017
    Assignee: PAUL SMITH GROUP HOLDINGS LIMITED
    Inventors: Zoe Barclay, Sara Lopez, Rosie Davis, Tanya Chancellor, Andrew Stevenson
  • Patent number: D809290
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: February 6, 2018
    Assignee: PAUL SMITH GROUP HOLDINGS LIMITED
    Inventors: Zoe Barclay, Sara Lopez, Rosie Davis, Tanya Chancellor, Andrew Stevenson