Patent ID: 7201234

Claim:
A residential fire sprinkler comprising: a body defining a passageway between an inlet and an outlet along a longitudinal axis with the outlet closer to an area to be protected than the inlet, the passage including a rated K-factor of at least 6, the body including a portion having ¼ inch or greater NPT threads formed thereon; a closure positioned proximate the outlet so as to occlude the passageway; a heat responsive trigger that retains the closure to occlude the passageway; at least one frame arm being coupled to the body at one end and a boss at another end so that a portion of the frame arm is contiguous to a first plane extending generally parallel to the longitudinal axis; and a deflector assembly disposed along the longitudinal axis and spaced from the outlet so that when the trigger is actuated, the deflector assembly provides adequate fluid distribution for the protection of a dwelling unit, the deflector including; a plurality of tines disposed about the longitudinal axis to define a generally circular outer perimeter; a member having a slot whose length is at least twice as large as its width, the slot extending along a second plane that intersects the first plane, the slot forming a close-ended boundary at a first end and further forming a close-ended boundary at a second end spaced from the outer perimeter.