Tyco Fire Products LP

Grinnell Corporation

Grinnell Fire Protection Systems Company, Inc.

Donald B Pounder

Manuel R Silva, Jr

Michael A Fischer

Thomas E Archibald

James W Mears

Yoram Ringer

Michael R Landi

A dry sprinkler for a fire protection system. The preferred dry sprinkler has a metallic disc annulus positionable within a passageway to skew a central axis of a face of the metallic disc annulus with respect to a longitudinal axis of the dry sprinkler so that an expected minimum flow rate based on a rated discharge coefficient is provided. The dry sprinkler operates to provide an expected flow rate over a range of start pressures. The expected flow rate is based on a K-factor rating. The dry sprinkler provides an acceptable level of fluid flow rate from the expected flow rate based on the K-factor for a range of start pressures.

Dry sprinkler

An upright ESFR sprinkler includes a generally tubular body, at least one frame arm, a closure assembly, an unactuated heat responsive trigger assembly and a deflector assembly with a K-factor greater than 14, and preferably 16.8. The passageway extends between inlet and outlet openings. The closure assembly is positioned proximate the outlet so as to occlude the passageway with a Belleville seal. An ejection spring is coupled to the closure assembly. The heat responsive trigger assembly has a Response Time Index of 40 meter-second(msec) or less. The deflector assembly includes a nosepiece and a plate like redirecting member. The plate like redirecting member faces the outlet and is coupled to the at least one frame arm and spaced from the outlet opening. The plate shaped member includes a first generally planar portion, a conical second portion, and a third portion extending from the conical second portion. The third portion includes a plurality of tines and a plurality of slots with at least one slot disposed between every two tines so that, when the heat responsive trigger assembly is actuated and the closure assembly is positioned to allow a density of water to flow from the outlet of the body so as to suppress a fire of a particular commodity situated beneath the ceiling of 35 feet or less. System and methods relating to the upright sprinklers are also provided.

Upright, early suppression fast response sprinkler

An upright ESFR sprinkler includes a generally tubular body, at least one frame arm, a closure assembly, an unactuated heat responsive trigger assembly and a deflector assembly with a K-factor greater than 14, and preferably 16.8. The passageway extends between inlet and outlet openings. The closure is positioned proximate the outlet so as to occlude the passageway with a Bellville seal being. An ejection spring is coupled to the closure assembly. The heat responsive trigger assembly has a Response Time Index of 40 metersecond(msec) or less. The deflector assembly includes a nosepiece and a plate like redirecting member. The plate like redirecting member faces the outlet and is coupled to the at least one frame arm and spaced from the outlet opening. The plate shaped member includes a first generally planar portion, a conical second portion, and a third portion extending from the conical second portion. The third portion includes a plurality of tines and a plurality of slots with at least one slot disposed between every two tines so that, when the heat responsive trigger assembly is actuated and the closure is positioned to allow a density of water to flow from the outlet of the body so as to suppress a fire of a particular commodity situated beneath the ceiling of 35 feet or less. System and methods relating to the upright sprinklers are also provided.

An extended coverage pendent sprinkler configured for the fire protection of an occupancy classified as any one of: light hazard, ordinary hazard, extra hazard, rack storage with solid shelves and any combination thereof. The sprinkler preferably includes a body having an inlet and an outlet spaced from the inlet to define a passageway to further define a sprinkler axis and a K factor ranging from 11 gpm/(psi)to about 25 gpm/(psi). A deflector is spaced from the outlet to distribute a fire fighting fluid over a maximum protection area of about 196 square feet, and having one or more combination of features as described in the preferred deflector described herein.

Extended coverage pendent sprinkler

Dry Sprinkler

An upright ESFR sprinkler includes a generally tubular body, at least one frame arm, a closure assembly, an unactuated heat responsive trigger assembly and a deflector assembly with a K-factor greater than 14, and preferably 16.8. The passageway extends between inlet and outlet openings. The closure is positioned proximate the outlet so as to occlude the passageway with a Belleville seal. An ejection spring is coupled to the closure assembly. The heat responsive trigger assembly has a Response Time Index of 40 meter-second(msec) or less. The deflector assembly includes a nosepiece and a plate like redirecting member. The plate like redirecting member faces the outlet and is coupled to the at least one frame arm and spaced from the outlet opening. The plate shaped member includes a first generally planar portion, a conical second portion, and a third portion extending from the conical second portion. The third portion includes a plurality of tines and a plurality of slots with at least one slot disposed between every two tines so that, when the heat responsive trigger assembly is actuated and the closure is positioned to allow a density of water to flow from the outlet of the body so as to suppress a fire of a particular commodity situated beneath the ceiling of 35 feet or less. System and methods relating to the upright sprinklers are also provided.

Upright, suppression sprinkler

A pendent-type fire protection sprinkler with a body defining an orifice and outlet for flow of fluid, and a deflector positioned coaxial with the outlet for impingement of fluid flow thereupon. The deflector has one or a combination of features for improved performance. For example, the deflector may have a frusto-conically shaped recess within a central area facing the sprinkler outlet, the recess defined by a surface slanted at a predetermined acute angle to the horizontal, with a plurality of holes or slots defined by the slanted surface, the recess being surrounded by an essentially flat outer area perpendicular to the sprinkler outlet axis. The deflector may have a bump, or other irregularity, on the sprinkler deflector inside surface opposed to the sprinkler outlet on each of the opposite tines in a plane perpendicular to a plane of the sprinkler frame arms. The deflector may have openings at about 45.degree. to the plane of the frame arms, the openings shaped with the width of each opening gradually decreasing towards the deflector periphery.

Deflectors for pendent-type fire protection sprinklers

An upright-type fire protection sprinkler with a body defining an orifice and outlet for flow of fluid, and a deflector positioned coaxial with the outlet for impingement of fluid flow thereupon, has one or a combination of the following features for improved performance. The deflector may have an inner surface with a recessed central area, and a recessed redirecting area about the central area at a predetermined acute angle and axial offset thereto. The deflector has tines with inner surfaces inclined towards the outlet, at least a first set of tines disposed in planes at about 45.degree. to a first plane of sprinkler frame arms, the surfaces of the first set of tines being inclined at an angle relatively more outward from the axis than the angle of inner surfaces of adjacent tines. The tines may include a second set of tines in a plane perpendicular to the first plane, and a third set of tines in the first plane, inner surfaces of the second set of tines having a second set width and inner surfaces of the third set of tines having a third set width about 0.15 to 0.65 times the second set width. The second set width may be substantially greater than widths of inner surfaces of all other tines.

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North Kingston, RI, United States of America

Donald B Pounder