Patents Assigned to Crompton Technology Group Limited
  • Patent number: 10781973
    Abstract: A pressure vessel includes front and rear end plates and a plurality of open-ended vessel structures constructed of fibre-reinforced polymer matrix composite material positioned adjacent to one another so that their longitudinal axes are parallel to a longitudinal direction extending between the front and rear end plates. The vessel also includes an outer reinforcement comprising polymer matrix composite material with continuous fibres extending longitudinally around the pressure vessel to secure the front and rear end plates to the vessel structures. At least one of the vessel structures has a partially curved cross section in a plane perpendicular to its longitudinal axis, such that one or more crevices are formed between the vessel structures, running longitudinally between the front and rear end plates and the front and rear end plates are shaped to allow the outer reinforcement to at least partially fill the one or more crevices between the vessel structures.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: September 22, 2020
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: James Bernard, Jon Pethick, Ian Chase
  • Patent number: 10704606
    Abstract: A torque disc comprising a fixing surface and at least one restraining element. The fixing surface defines an area of the torque disc for attachment to a fastener in use, and the at least one restraining element extends from the fixing surface so as to engage in use with at least one portion of the fastener to restrain rotational movement of the fastener during attachment to or detachment from the torque disc.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: July 7, 2020
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: David Abraham, Aniel Ganatra
  • Patent number: 10612568
    Abstract: A connector assembly includes a connector for connecting a hollow composite shaft that has been manufactured to comprise an inwardly tapered portion towards one end of the hollow composite shaft to a collar includes an insert, a collar and a tensioner. The insert is received in the tapered portion of the hollow composite shaft such that the inner surface of the tapered portion of the hollow composite shaft in use will engage with the outer tapered surface of the insert and collar includes an inner tapered surface and being sized to fit over the insert and the tapered portion of the hollow composite shaft. The tensioner is arranged, in use, to axially force the collar and the insert in opposite directions so as to exert a clamping force onto the tapered portion of the hollow composite shaft. A method of forming the assembly is also included.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: April 7, 2020
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: Ioannis Giannakopoulos, James Bernard, Panagiota Chatzi, Ian Chase, Hugo Palmer
  • Patent number: 10598200
    Abstract: A composite tubular structure is described suitable for transmitting axial loads in compression or tension. It comprises an elongate composite member 70 having a nut 50 retained in each end for forming a connection with another component. The composite member further comprises an inwardly tapered section at each end, each of which has an inner surface that follows a tapered outer surface of one of the embedded nuts. The inwardly tapered section narrows the composite member in a longitudinal direction towards one end so as to provide a constriction which retains the respective nut within. A connector 80, 84, 86 may clamp the end with a pre-load. A liner 60 may be used to support the nuts during deposition of the filaments in order to form the two inwardly tapered sections at the ends. It can allow the wall of the structure to be formed with different profiles.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: March 24, 2020
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: James Bernard, Ian Chase
  • Patent number: 10527086
    Abstract: A strut comprises a composite cylinder with a mid-strut fitting mounted on an interface region on a mid-portion of said cylinder. At least in the interface region, layers of helical-filaments are displaced radially-outward and even inclined with respect to an axis of the cylinder such that they may follow a path with a radial component. A mid-strut fitting is provided which has a plurality of teeth on an inner circumferential surface. The plurality of teeth engage the helical-filaments in the interface region to provide a mechanical connection. Portions of surface and intermediate layers of the helical-filaments may be removed to expose ends of those filaments in the interface region before mounting the mid-strut fitting on the cylinder.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: January 7, 2020
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: James Bernard, Will Pollitt, Ioannis Giannakopoulos
  • Patent number: 10487869
    Abstract: A composite structural component includes an elongate member made of a polymer matrix composite material. The elongate member generally extending along an axis of the composite structural component from an end portion thereof. The component also includes an end fitting forming a mechanical joint with the end portion. The elongate member includes a first member extending from the end portion along the axis of the composite structural component and a second member extending from the end portion along the axis of the composite structural component. The end fitting is constrained in the end portion by the first and second members such that the first member is preloaded with a compressive stress in the axial direction and the second member is preloaded with a tensile stress in the axial direction.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: November 26, 2019
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventor: Tom Beale
  • Patent number: 10415648
    Abstract: A flexible coupling comprises a flexible torque disc (24) having a first plurality of fixing points (24a) whereby it can be mounted upon a first rotatable component (12), in use, and a second plurality of fixing points (24b) whereby it can be mounted upon a second rotatable component (14), in use, a support ring (26), and mounting means (34) whereby the flexible torque disc (24) is secured to the support ring (26), the mounting means (34) restricting deflection of the flexible torque disc (24) relative to the support ring (26).
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: September 17, 2019
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: Ian Chase, Kevin Hadley, Matthew Caton
  • Patent number: 10361017
    Abstract: There is described an electrical isolator comprising a first fluid-carrying member and a second fluid-carrying member spaced apart from said first fluid-carrying member, a resistive, semi-conductive or non-conductive component located between and sealed against said first and second fluid-carrying member, wherein said resistive, semi-conductive or non-conductive component is adapted to convey fluid flowing from said first fluid-carrying member to said second fluid-carrying member, a reinforcing composite encircling said first fluid-carrying member, said second fluid-carrying member and said resistive, semi-conductive or non-conductive component, wherein said reinforcing composite is continuous and provides a conductive path between said first fluid-carrying member and said second fluid-carrying member, wherein said reinforcing composite comprises fiber and a resin mixture, and said resin mixture comprises resin and a conductive additive.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: July 23, 2019
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: Ian Thomas Chase, Darcy John O'Gara, Miguel Diaz Palacios
  • Patent number: 10184509
    Abstract: A composite filament-wound shaft with an end fitting mounted on an interface region on at least one end of said shaft, wherein in said interface region filaments of the filament-wound shaft are angled with respect to the shaft axis such that they follow a path with a radial component and have been cut so as to expose the ends of said filaments in said interface region; and wherein said end fitting comprises a helical thread engaging with said interface region. The helical threaded engagement provides excellent load transmission of axial forces and is therefore well suited to tension and compression elements. The joint provides a low cost and low weight interface.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: January 22, 2019
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: William Pollitt, Ian Thomas Chase
  • Patent number: 10138945
    Abstract: A flexible coupling includes a flexible torque disc comprising a plurality of mount points and a first coupling member mounted to a first subset of said mount points. The coupling also includes one or more second coupling members each mounted to a second subset of said mount points. The first coupling member comprises one or more flanges substantially parallel with said torque disc and the one or more second coupling members each has a groove engaging with said one or more flanges so as to limit the displacement of said first coupling member with respect to said second coupling member.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: November 27, 2018
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: Ian Thomas Chase, Aniel Tom Ganatra
  • Patent number: 10030712
    Abstract: A composite material torque disc which comprises a support layer, and a reinforcing fiber secured to the support layer, the support layer being embedded within a polymer matrix material.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: July 24, 2018
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: Ian Thomas Chase, Paul Anthony Lewis, Michael James Dewhirst
  • Patent number: 9869341
    Abstract: A method is disclosed of manufacture of a component (9) with an internal groove (2,3) comprising: providing a tubular first part (1) with an external groove, bonding or forming a second part (8) on the first part to at least partly cover the external groove, and removing material from the first part to open the external groove to an interior cavity of the component.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: January 16, 2018
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventor: Graeme Hyson
  • Patent number: 9765929
    Abstract: A composite material comprises of at least first and second layers, each comprising a polymeric matrix material and wound tows for reinforcement. The tows are wound in opposite directions in each of the first and second layers such that overlapping tows form crossover regions. The wound tows in the second layer are arranged such that the crossover regions are formed to be laterally offset from the crossover regions in the first layer.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: September 19, 2017
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: Peter F. Giddings, Nicholas J. Henry, Mohammed K. Riaz
  • Patent number: 9482266
    Abstract: A load transmitting connector 13 for composite tube 11 and a method of attachment of said connector 13 to the tube 11, the connector 13 comprising a screw threaded nut 14 having an outer surface 18 shaped to receive the composite, an annular collar 15, a screw threaded end fitting 16 for engaging the screw thread within the nut 14, and a load means 17, wherein the nut 14 is incorporated within said one end of the tube during tube manufacture, the tube 11 being cured with the nut 14 in situ, the annular collar 15 is placed over said one end of the tube, the end fitting 16 is screwed into the nut, and the load means 17 in use axially moving the end-fitting 16 relative to the collar 15 to exert a clamping load on the composite tube.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: November 1, 2016
    Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventor: Michael James Dewhirst
  • Publication number: 20160061273
    Abstract: A flexible coupling comprising: a flexible torque disc comprising a plurality of mount points; a first coupling member mounted to a first subset of said mount points; one or more second coupling members each mounted to a second subset of said mount points; wherein said first coupling member comprises one or more flanges substantially parallel with said torque disc; and wherein said one or more second coupling members each has a groove engaging with said one or more flanges so as to limit the displacement of said first coupling member with respect to said second coupling member. This coupling arrangement is easy to assemble, repair and maintain in confined spaces, while also being lightweight and using a small number of components.
    Type: Application
    Filed: July 31, 2015
    Publication date: March 3, 2016
    Applicant: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventors: Ian Thomas Chase, Aniel Tom Ganatra
  • Publication number: 20150167730
    Abstract: A method is disclosed of manufacture of a component (9) with an internal groove (2,3) comprising: providing a tubular first part (1) with an external groove, bonding or forming a second part (8) on the first part to at least partly cover the external groove, and removing material from the first part to open the external groove to an interior cavity of the component.
    Type: Application
    Filed: May 15, 2013
    Publication date: June 18, 2015
    Applicant: CROMPTON TECHNOLOGY GROUP LIMITED
    Inventor: Graeme Hyson
  • Publication number: 20080012329
    Abstract: A fibre reinforced composite shaft (Co) bearing a metallic flanged end coupling (Me) attached to the outside diameter through a concentric cylindrical torsional joint, The composite tube is press fitted into a flanged metallic end coupling (Me) comprising a multiplicity of teeth (Te) running parallel to the tube axis which cut longitudinal channels into the outside diameter of the composite tube wall during the press fit process. Pairs of inverted troughs (Tr) adjacent to and running parallel to the cutting teeth in the serrated region allow space for the redistribution of the composite material and debris (Deb) formed during the press fitting process. This combined action forms a mechanical interface (In) capable of supporting torsional and axial stresses. A structural adhesive (Ad) may be applied to the joint region to form a secondary joint. In this case the composite formed between the cutting debris and the adhesive fills the trough channels.
    Type: Application
    Filed: January 16, 2007
    Publication date: January 17, 2008
    Applicant: Crompton Technology Group Limited
    Inventor: Michael Dewhirst
  • Publication number: 20070071957
    Abstract: A composite material for acoustic or mechanical damping, comprising a plurality of layers of fibrous material embedded in a solid material. The solid material layers are interspersed by perforated films of viscoelastic polymer.
    Type: Application
    Filed: May 6, 2004
    Publication date: March 29, 2007
    Applicants: Siemens Magnet Technology Ltd., Crompton Technology Group Limited
    Inventors: Andrew Atkins, Roger Davidson
  • Publication number: 20060258469
    Abstract: A fibre reinforced composite shaft bearing a metallic flanged end coupling (F1) attached to the outside diameter through a concentric cylindrical torsional joint, comprising: a)—a cylindrical end region comprising a wedge shaped inner layer of fibre (Hp) composite; b)—a layer of outer helical composite plies (He) forming the shaft and extending over the wedge shaped inner layer, wherein the layer of outer helical plies has a tapered end part overlying wedge shaped inner layer to form the cylindrical end portion, wherein all helical plies of fibre layers are exposed on an outer surface; and c)—a metallic flanged end coupling attached to the outer surface of the cylindrical end region through a primary mechanically interface (Sp) which may be splined. The joint may be strengthened by internally reinforcing the main shaft with an interference fit tubular plug (Pg) and protected from environmental degradation by inboard secondary adhesive bond (Ad).
    Type: Application
    Filed: March 21, 2006
    Publication date: November 16, 2006
    Applicant: Crompton Technology Group Limited
    Inventors: Michael Dewhirst, Roger Davidson