Dry sprinkler

  • US 7,802,628 B1
  • Filed: 02/11/2009
  • Issued: 09/28/2010
  • Est. Priority Date: 07/19/2002
  • Status: Active Grant
First Claim
Patent Images

1. A dry sprinkler comprising:

  • a tubular outer structure defining a passageway extending along a longitudinal axis between an inlet and an outlet defining a K-factor of at least 5.6;

    a tubular inner assembly disposed within the tubular outer structure and movable along the longitudinal axis in the passageway between a first position and a second position, the tubular inner assembly including;

    a multi-legged yoke, the multi-legged yoke having a first yoke support end and a second yoke support end, the first yoke support end including at least one elongate member, the second yoke support end including at least two support legs extending from the at least one elongate member; and

    a fluid tube supporting the multi-legged yoke at one end of the fluid tube;

    a closure assembly supported by the at least one elongate member of the first yoke support end, the closure assembly occluding a flow of fluid in the passageway when the tubular inner assembly is proximate the first position;

    a projection coupled to the tubular outer structure between the inlet and the fluid tube to contact and translate the closure assembly to a side of the longitudinal axis when the inner tubular assembly moves from the first position towards the second position;

    a temperature responsive trigger assembly proximate the outlet of the tubular outer structure, the trigger assembly having a then rating of any one of about 135, 155, 200 and 286 degree Fahrenheit (°

    F.); and

    a fluid deflecting structure proximate the outlet of the tubular outer structure.

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