Patent ID: 11865388
Assignee: TYCO FIRE PRODUCTS LP
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A

Claim 0:
1. A fire protection sprinkler, comprising:
a frame defining a passageway between an inlet and an outlet along a longitudinal axis, the passageway having a nominal K-factor greater than or equal to 8.0;
a seal coupled with the outlet to prevent fluid flow out of the passageway while the seal is in an unactuated state;
a thermally-responsive trigger that changes the seal from the unactuated state to an actuated state to allow fluid to flow out of the passageway; and
a deflector coupled with the frame, the deflector to provide a coverage area of between 220 square feet and 400 square feet in a polygonal spray pattern having a long axis of between 28 feet and 36 feet, the deflector is planar and comprises a first side, a second side, a third side, and a fourth side, the deflector having a deflector axis extending through the first side and the second side and a horizontal centerline extending across the deflector axis from the third side to the fourth side, the deflector axis parallel with the long axis, the third side and the fourth side are tineless and each have a concave curvature from an innermost point at the horizontal centerline to an outermost point, the outermost point defining a curvature width from the outermost point to the deflector axis, the curvature width greater than or equal to 0.02 inches and less than or equal to 0.1 inches, the first side and the second side each comprise an end profile defining a plurality of tines, the first side and the second side have a length that is smaller than a length of the third side and the fourth side.