Patents Assigned to Dundas Jafine, Inc.
  • Soffit vent
    Patent number: 7980266
    Abstract: A one-way soffit vent has an upstream valve seat and a downstream vented cover having a boss extending in the upstream direction. A valve disk is reciprocally mounted on the boss and biased against the valve seat.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: July 19, 2011
    Assignee: Dundas Jafine Inc.
    Inventor: Siegfried Niedermair
  • Roof vent
    Patent number: 6293862
    Abstract: A roof vent comprises two parts, a cover and a conduit. The conduit, with a pipeline already attached, can be easily connected to the cover, after the cover has been installed on a roof. The conduit will plug into the cover making installation easy. The vent includes a channel or moat which surrounds the outlet of the conduit. Thus, if during extreme weather conditions, moisture passes into the cover from outside through its opening and if it gets past the door flap, it will be trapped in the channel.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: September 25, 2001
    Assignee: Dundas Jafine, Inc.
    Inventors: Paul Jafine, Michael David Jafine
  • Exhaust vent cover
    Patent number: D428131
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: July 11, 2000
    Assignee: Dundas Jafine, Inc.
    Inventors: Paul Jafine, Michael David Jafine