Patents by Inventor Ian James Griffiths

Ian James Griffiths 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).

  • Publication number: 20220293296
    Abstract: A cable contains a core including a transmissive element and a coating layer made of a coating material. The coating material contains, with respect to the total weight of polymeric materials present in the composition, (i) 70% to 95% by weight of a recycled linear low density polyethylene (r-LLDPE); and (ii) 5 to 30% by weight of an ethylene-vinyl acetate copolymer (EVA). The coating layer shows mechanical properties comparable to those of a virgin polymer composition and better, both before and after ageing, than recycled polymer-based compositions containing recycled LLDPE but free from EVA. The EVA may be added to the r-LLDPE or, alternatively, be already contained in the r-LLDPE as a result of previous LLDPE use. The cable may further contain a skin layer placed around and in direct contact with the coating layer based on r-LLDPE.
    Type: Application
    Filed: March 2, 2022
    Publication date: September 15, 2022
    Applicant: PRYSMIAN S.p.A
    Inventors: Gustaf JONSSON, Ian James GRIFFITHS
  • Publication number: 20220236508
    Abstract: An optical fibre unit includes one or more optical fibres; an outer jacket surrounding the one or more optical fibres, made of a fibre reinforced polymer comprising inorganic fibres embedded in a polymer matrix in an amount comprised between 5 and 25 wt % with respect to the weight of the fibre reinforced polymer, the inorganic fibres having a median length (d50) comprised between 50 and 250 ?m; and a skin layer surrounding the outer jacket and in direct contact thereto, having a thickness comprised between 0.05 mm and 0.5 mm and being free from fibres.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 28, 2022
    Inventors: Donald Ray PARRIS, Ian James Griffiths
  • Publication number: 20220107466
    Abstract: The invention relates to an optical fiber connector and to a related method for changing the polarity thereof. The connector comprises a ferrule, housing a plurality of terminations of optical fibers, and an inner housing arranged around the ferrule and comprising a rear portion and a front portion configured to be inserted into an optical fiber adapter.
    Type: Application
    Filed: September 30, 2021
    Publication date: April 7, 2022
    Inventors: Antonio GIGLIO, Kris ROBERTS, Luca CAVENAGHI, Ian James GRIFFITHS
  • Publication number: 20200192041
    Abstract: An optical cable includes an uncolored, non-opaque outer sheath housing a number n of optical fibers having respective uncolored, non-opaque coatings. At least n-1 optical fibers have uncolored, non-opaque coatings bearing respective ultraviolet identification markings. When the optical cable is normally illuminated by natural light or artificial light, the visual impact of the cable at naked eye is minimum. When, a field operator has to identify the optical fibers within the cable, she/he illuminates the optical fibers of the cable with the UV light of a UV source. This way, the UV identification markings of the optical fibers become visible to the human eye and allow the field operator to identify the optical fiber(s) of interest. Hence, identifiability of each single optical fiber is advantageously achieved without increasing the visual impact of the cable.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Inventors: Ian James GRIFFITHS, Gerard PERA GOLZALVEZ
  • Patent number: 9429730
    Abstract: A method for installing an optical fiber unit in a protective tube housing a pulling rope includes the steps of: providing a mini tube having a longitudinal opening from end to end; transversally inserting a portion of the pulling rope in the longitudinal opening; contacting the pulling rope and optical fiber unit over a predetermined length; slipping the mini tube over at least a portion of the contacting length of the pulling rope and optical fiber unit; crimping the mini tube around the pulling rope and optical fiber unit; and drawing the optical fiber unit through the protective tube by pulling the pulling rope.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: August 30, 2016
    Assignee: PRYSMIAN S.P.A.
    Inventors: Fabio Abbiati, Ian James Griffiths, Arnaud Le Dissez
  • Patent number: 9383535
    Abstract: An optical termination assembly may include an optical termination box and a drop cable. The drop cable may have a first end housed in a first compartment of the optical termination box. The first end of the drop cable may be pre-connectorized. The optical termination box may include at least one first fixing element accessible from an outside of the optical termination box suitable for fixing the optical termination box to a support structure. An optical termination assembly may include an optical termination box and a drop cable including a plurality of optical fibers. The drop cable may have a first end housed in a first compartment of the optical termination box. At the first end of the drop cable, each of the plurality of optical fibers may be connected to a respective optical connector. The optical termination box may include the at least one first fixing element.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 5, 2016
    Assignee: PRYSMIAN S.p.A.
    Inventors: Fabio Abbiati, Ian James Griffiths, Arnaud Le Dissez
  • Patent number: 9091832
    Abstract: An optical fiber cable, includes at least one optical fiber and a cable connector at a cable end, and a removable cap removably couplable to a free end of the cable connector. The cap includes a recess adapted to receive and accommodate an anchor element of a cable pulling rope, and to retain the anchor element against traction when the pulling rope is tractioned.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: July 28, 2015
    Assignee: PRYSMIAN S.P.A.
    Inventors: Ian James Griffiths, Antonio Giglio, Luca Cavenaghi
  • Publication number: 20130004125
    Abstract: It is disclosed an optical termination assembly (1) comprising an optical termination box (2) and a drop cable (3). The drop cable (3) has a first end housed in a first compartment of the optical termination box (2). The first end of the drop cable is pre-connectorized. The optical termination box (2) comprises at least one first fixing element (44e) accessible from the outside suitable for fixing the optical termination box (2) to a support structure.
    Type: Application
    Filed: December 23, 2009
    Publication date: January 3, 2013
    Applicant: Prysmian S.p. A.
    Inventors: Fabio Abbiati, Ian James Griffiths, Arnaud Le Dissez
  • Publication number: 20120141075
    Abstract: An optical fiber cable, includes at least one optical fiber and a cable connector at a cable end, and a removable cap removably couplable to a free end of the cable connector. The cap includes a recess adapted to receive and accommodate an anchor element of a cable pulling rope, and to retain the anchor element against traction when the pulling rope is tractioned.
    Type: Application
    Filed: June 8, 2009
    Publication date: June 7, 2012
    Inventors: Ian James Griffiths, Antonio Giglio, Luca Cavengahi
  • Publication number: 20120080651
    Abstract: A method for installing an optical fibre unit in a protective tube housing a pulling rope includes the steps of: providing a mini tube having a longitudinal opening from end to end; transversally inserting a portion of the pulling rope in the longitudinal opening; contacting the pulling rope and optical fibre unit over a predetermined length; slipping the mini tube over at least a portion of the contacting length of the pulling rope and optical fibre unit; crimping the mini tube around the pulling rope and optical fibre unit; and drawing the optical fibre unit through the protective tube by pulling the pulling rope.
    Type: Application
    Filed: March 18, 2009
    Publication date: April 5, 2012
    Inventors: Fabio Abbiati, Ian James Griffiths, Arnaud Le Dissez
  • Patent number: 6810194
    Abstract: An assembly for use in connecting optical fibers includes a housing (12) for optical fiber joints and a fiber routing device (70) associated with the housing. The housing has a first inlet (41) for receiving optical fibers from a primary side of an optical fiber network and a second inlet (13) for receiving optical fibers from a customer side of an optical fiber network. The fiber routing device (70) has an outlet (78) for feeding fibers from the customer side of the optical fiber network into the second inlet (13) and two inlets (72, 74) for receiving the customer-side optical fibers for feeding to its outlet.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: October 26, 2004
    Assignee: Pirelli General PLC
    Inventors: Ian James Griffiths, John Kerry, Malcolm Owen Jones
  • Patent number: 6764220
    Abstract: The present invention provides an assembly for use in connecting optical fibers. The assembly may comprise a plurality of housings for housing connections between optical fibers and a guide arrangement for guiding optical fibres into the housings. The guide arrangement may comprise a plurality of guide devices each having one inlet port for the passage of optical fibres into the guide arrangement and one outlet port for guiding optical fibers into the housing. The guide arrangement may also include one further inlet port for receiving optical fibres from another guide device and one further outlet port for guiding optical fibres to another guide device.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: July 20, 2004
    Assignee: Pirelli General PLC
    Inventors: Ian James Griffiths, John Kerry, Malcolm Owen Jones
  • Publication number: 20020191942
    Abstract: An assembly for use in connecting optical fibers includes a housing (12) for optical fiber joints and a fiber routing device (70) associated with the housing. The housing has a first inlet (41) for receiving optical fibers from a primary side of an optical fiber network and a second inlet (13) for receiving optical fibers from a customer side of an optical fiber network. The fiber routing device (70) has an outlet (78) for feeding fibers from the customer side of the optical fiber network into the second inlet (13) and two inlets (72, 74) for receiving the customer-side optical fibers for feeding to its outlet.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 19, 2002
    Inventors: Ian James Griffiths, John Kerry, Malcom Owen Jones
  • Publication number: 20020186953
    Abstract: The present invention provides an assembly 10 for use in connecting optical fibres, the assembly comprising a plurality of housings 12 for housing connections between optical fibres and a guide arrangement for guiding optical fibres into said housings 12. The guide arrangement comprises a plurality of guide devices 14 mounted side-by-side, each guide device 14 having at least one inlet port 22 for the passage of optical fibres into the guide arrangement, at least one outlet port 26 associated with a said housing 12 for guiding optical fibres into the associated housing 12. Each guide device 14 also comprises at least one further inlet port 28 for receiving optical fibres from another one of the guide devices when positioned adjacent the guide device 14 on one side thereof and at least one further outlet port 30 for guiding optical fibres to another one of the guide devices when positioned adjacent the guide device on another side thereof. The guide arrangement comprises at least two guide devices 14.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 12, 2002
    Inventors: Ian James Griffiths, John Kerry, Malcolm Owen Jones