Patents by Inventor Semage Rupasiri Fernando

Semage Rupasiri Fernando 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: 7399373
    Abstract: The present invention relates to a seaming apparatus (10) for joining, along a seam without thread, two or more flexible sheets (12, 14). The apparatus comprises bonding means (16, 18) for bonding together at least two flexible sheet materials. The bonding means has a nip portion (36) for releasably engaging together sheet material, and drive means (20, 22) formed and arranged for engaging sheet material, and moving it incrementally through the bonding means. The drive means is formed and arranged to co-operate with the nip portion so as to sequentially nip then drive material through the apparatus wherein only one of the nip portion or the drive means is in contact with sheet material at any given moment. A method for joining flexible sheets by use of the apparatus of the invention is also described.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: July 15, 2008
    Assignee: Ardmel Automation Limited
    Inventor: Semage Rupasiri Fernando
  • Patent number: 7181810
    Abstract: The present invention relates to a slide fastener suitable for providing a water resistant closure between two edges of material. The fastener comprises first and second stringer tapes, each stringer tape having a multiplicity of coupling elements disposed in a row therealong and a slider captively engaged with the opposed rows of coupling elements of the first and second stringer tapes for reciprocal movement therealong and for bringing the coupling elements into and out of interlocking engagement.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: February 27, 2007
    Inventor: Semage Rupasiri Fernando
  • Publication number: 20040064922
    Abstract: The present invention relates to a slide fastener (1) suitable for providing a water resistant closure between two edges of material. The fastener (1) comprises first (2) and second (4) stringer tapes, each stringer tape (2, 4) having a multiplicity of coupling elements (10) disposed in a row therealong and a slider captively engaged with the opposed rows of coupling elements (10) of the first and second stringer tapes for reciprocal movement therealong and for ringing the coupling elements (10) into and out of interlocking engagement.
    Type: Application
    Filed: July 24, 2003
    Publication date: April 8, 2004
    Inventor: Semage Rupasiri Fernando