Patents by Inventor Sinnathamby Kupenthirarajan

Sinnathamby Kupenthirarajan 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: 20010000878
    Abstract: A continuous roll of screen which may be payed out from said roll by an installer or manufacturer to a required predetermined window size, or alternatively patio door size, said screen comprising a free end which allows the installer to pay the screen off of the roll upon which the screen is accumulated course upon course, one end of said screen being disposed at the end of the courses accumulated on the roll from which the screening is payed off and the other end being a free end, said screen having side edges and preferably being manufactured from preferably vinyl-coated fiberglass, the edges of said screen having affixed thereto a generally preferably T-shaped key manufactured from a flexible material, for example polyvinyl chloride, which is affixed preferably by radio frequency welding (or RF welding) with the edges and preferably each of the edges, and in one embodiment at least one edge of said screen, wherein the vinyl coating provided on the screen melds with the polyvinyl chloride key to form a resi
    Type: Application
    Filed: December 21, 2000
    Publication date: May 10, 2001
    Inventors: John Robert Davies, Sean Davies, Sinnathamby Kupenthirarajan
  • Patent number: 6209610
    Abstract: A continuous roll of screen which may be payed out from said roll by an installer or manufacturer to a required predetermined window size, or alternatively patio door size, said screen comprising a free end which allows the installer to pay the screen off of the roll upon which the screen is accumulated course upon course, one end of said screen being disposed at the end of the courses accumulated on the roll from which the screening is payed off and the other end being a free end, said screen having side edges and preferably being manufactured from preferably vinyl-coated fiberglass, the edges of said screen having affixed thereto a generally preferably T-shaped key manufactured from a flexible material, for example polyvinyl chloride, which is affixed preferably by radio frequency welding (or RF welding) with the edges and preferably each of the edges, and in one embodiment at least one edge of said screen, wherein the vinyl coating provided on the screen melds with the polyvinyl chloride key to form a resi
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: April 3, 2001
    Assignee: 420820 Ontario Limited
    Inventors: John Robert Davies, Sean Davies, Sinnathamby Kupenthirarajan
  • Patent number: 5946857
    Abstract: A closure assembly includes a track and a slidable and pivotable closure member. The closure member is engaged with the track proximate first and second pivots adjacent the pivotable end of the member, the first and second pivots being interconnected by a multiple segment shaft (for example at least two portions) (for example telescoping) which provides for accurate installation, retention, removal, adjustment and alignment of the first and second pivots in a substantially parallel line for pivotally supporting the closure member so that it may be safely and securely pivoted away from the closure assembly.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: September 7, 1999
    Assignee: Preferred Engineering Products, Ltd.
    Inventors: Bob Davies, Sean Davies, Shaul Goldenberg, Sinnathamby Kupenthirarajan
  • Patent number: 5687506
    Abstract: A closure assembly is provided including a track and a slidable and pivotable closure member. The closure member is engaged with the track proximate first and second pivots adjacent the pivotable end of the member, the first and second pivots being interconnected by a multiple segment shaft (for example at least two portions) (for example telescoping) which provides for accurate installation, retention, removal, adjustment and alignment of the first and second pivots in a substantially parallel line for pivotally supporting the closure member so that it may be safely and securely pivoted away from the closure assembly. Improvements to the abovementioned structure are also provided.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: November 18, 1997
    Assignee: 420820Ontario Limited, c.o.b. Preferred Engineering Inc.
    Inventors: Bob Davies, Sean Davies, Shaul Goldenberg, Sinnathamby Kupenthirarajan