Abstract: A fusible link assembly including a first detection line, a second detection line, and a fusible link. The fusible link includes, a first substrate with a first end coupled to the first detection line, a second substrate with a first end coupled to the second detection line, and a solder layer directly bonded to a second end of the first substrate and a second end of the second substrate. The solder layer is configured to prevent separation of the first substrate and the second substrate until the solder layer reaches a temperature between 500° F.-575° F.

Abstract: A sprinkler assembly includes a connection fitting and a fire protection sprinkler. The connection fitting includes a tubular member with a first insertion end and a second insertion end with an internal conduit extending between the first and second insertion end along a longitudinal axis, the tubular member including an exterior surface and an inner surface, the inner surface defining a sealing surface between the first and second insertion ends circumscribed about the longitudinal axis and including a gripping portion axially spaced from the sealing surface. The fire protection sprinkler has a body defining an inlet and an outlet, a deflector spaced from the outlet, the body having an outer encasing surface surrounding the longitudinal axis and including a leading portion and a trailing portion for insertion in the second insertion end with the leading portion received within the sealing surface before the trailing portion engages the gripping portion.

Abstract: An injection mold for producing a sprinkler head part and related injection molding methods are described. The sprinkler head part includes a first, second, third and fourth mold portions. The first and second mold portions include first and second shaping elements structured to cooperatively form a body including a substantially cylindrical portion and a substantially planar portion, and two frame arms extending from the substantially planar portion of the body. The third mold portion includes a shaping element structured to form an orifice in the body of the sprinkler head. The fourth mold portion includes a shaping element structured to form a cross member connecting the two frame arms. The injection methods include injecting a composite material in molten form into the mold to form the molded sprinkler head part. The composite material includes thermoplastic polymeric resin and a plurality of reinforcing fibers dispersed in the resin.

Abstract: A sprinkler assembly includes a fire protection sprinkler and a push-to-connect-rotate-to-release (PCRR) fitting. The sprinkler has a body with a passageway extending along a first longitudinal axis and an outer encasing surface surrounding the first longitudinal axis and outer encasing surface including a seal member, and a deflector spaced from the outlet. The fitting includes a tubular member including an exterior surface and inner surface, the inner surface defining an internal conduit extending along a second longitudinal axis, the body received in the internal conduit such that the first longitudinal axis is aligned with the second longitudinal axis, the inner surface including a sealing surface portion circumscribed about the second longitudinal axis. The fitting includes a gripper ring disposed along the inner surface and a helical internal periphery about the second longitudinal axis in helical contact with a portion of the outer encasing surface between the deflector and seal member.

Abstract: A fusible link assembly including a first detection line, a second detection line, and a fusible link. The fusible link includes, a first substrate with a first end coupled to the first detection line, a second substrate with a first end coupled to the second detection line, and a solder layer directly bonded to a second end of the first substrate and a second end of the second substrate. The solder layer is configured to prevent separation of the first substrate and the second substrate until the solder layer reaches a temperature between 500° F.-575° F.

Abstract: A sprinkler button includes a body and a wall extending from the body. The body includes a ridge and one or more cavities defined by the ridge and extending into the body. The body defines a hollow chamber on an opposite side of the body from the one or more cavities. The wall includes one or more tabs.

Abstract: A fire exposure protection sprinkler assembly provides fire exposure protection for one or more windows and includes a fire exposure protection sprinkler, a sealing assembly configured to unseal in response to a fire such that fire exposure protection fluid may flow from the fire exposure protection sprinkler, and a housing having a pair of legs, with each of the legs having an aperture. The assembly also includes a deflection assembly configured to extend from the housing due to gravity and activation of a cover plate, with a deflector configured to disperse the fire exposure protection fluid over the one or more windows so as to wet the one or more windows.

Abstract: Ceiling only dry sprinkler systems and methods for protection of a storage occupancy employing a mandatory fluid delivery delay period. The systems and methods provide for fire protection of stored commodities of forty-five feet or greater with a hydraulic design ranging from six to eighteen design sprinklers. The systems and methods employ an upright sprinkler having a nominal K-factor greater than 28.

Abstract: A tire protection sprinkler including a frame body having an inlet, an outlet, defining an internal passageway extending between the inlet and the outlet along a sprinkler axis. A dome shaped deflector member is centered, axially aligned with the sprinkler axis, and spaced from the outlet. The deflector member has an outer surface and an inner surface that preferably includes: a peripheral region, a central region and an intermediate region. The intermediate region includes a primary deflecting surface, and a secondary deflecting surface that is surrounded by the primary deflecting surface The deflector member provides for generation of a non-circular spray pattern defined by four zones of fluid density concentrically formed about the sprinkler axis.

Abstract: A sprinkler includes a body defining a bore extending from an inlet to an outlet. At least one of an inner diameter and a wall thickness of the bore can be sized such that a K-factor of the sprinkler is within a threshold of 30.8, the K-factor defined in units of gallons per minute [gpm]/(pounds per square inch [psi])1/2.

Abstract: A sprinkler assembly include a connection fitting and a fire protection sprinkler. The connection fitting includes a tubular member with a first insertion end and a second insertion end with an internal conduit extending along a longitudinal axis, the tubular member including an exterior surface and an inner surface, the inner surface defining a sealing surface between the first and second insertion ends circumscribed about the longitudinal axis, the inner surface including a gripping portion spaced from the sealing surface. The fire protection sprinkler has a body defining an inlet and an outlet with a passageway between the inlet and the outlet, a deflector spaced from the outlet, the body having an outer encasing surface surrounding the longitudinal axis and including a leading portion and a trailing portion engaged with the gripping portion, having a first retention section and a second retention section.

Abstract: At least one aspect is directed to a fire protection sprinkler system to provide fire protection for an outdoor area. The fire protection system can include a dry pendent sprinkler assembly. The dry pendent sprinkler assembly can include a body portion, a sprinkler head portion, or a deflector portion. The body portion can secure the dry pendent sprinkler assembly with a feed line. The feed line can be disposed on an opposite side of an exterior wall relative to the sprinkler head portion. The feed line can include a fire protection fluid. The body portion can protrude from the exterior wall at an angle of at least 55 degrees relative to a lateral exterior projection that protrudes into the outdoor area from the exterior wall. The dry pendent sprinkler assembly can expel the fire protection fluid to cover the outdoor area.

Abstract: A sprinkler assembly includes a body defining an inlet, an outlet, and a fluid passage extending along a longitudinal axis between the inlet and the outlet. A guide pin aperture is defined by at least one of the body or a bushing coupled to the body. The sprinkler assembly further includes a deflector slidably coupled to the body. The deflector includes a deflector body coupled to a guide pin. The guide pin includes a shaft portion extending through the guide pin aperture and a shoulder that is wider than the shaft portion and configured to engage at least one of the body or the bushing to limit movement of the deflector body away from the body.

Abstract: A sprinkler assembly includes a fire protection sprinkler and a push-to-connect-rotate-to-release (PCRR) fitting. The fire protection sprinkler has a body defining an inlet and an outlet, a deflector spaced from the outlet, the body having an outer encasing surface surrounding a first longitudinal axis, the outer encasing surface including a seal member disposed about the encasing surface and a helical surface between the deflector and the seal member. The PCRR fitting includes a tubular member with a first end, a second end, an exterior surface, and an inner surface defining an internal conduit extending along a second longitudinal axis, the body received in the internal conduit such that the first longitudinal axis is axially aligned with the second longitudinal axis, the inner surface including a sealing surface portion circumscribed about the second longitudinal axis. The gripper ring is disposed along the inner surface and in contact with the helical surface.

Abstract: A sprinkler assembly includes a connection fitting and a fire protection sprinkler. The connection fitting includes a tubular member with a first insertion end and a second insertion end with an internal conduit extending between the first and second insertion end along a longitudinal axis, the tubular member including an exterior surface and an inner surface, the inner surface defining a sealing surface between the first and second insertion ends circumscribed about the longitudinal axis and including a gripping portion axially spaced from the sealing surface. The fire protection sprinkler has a body defining an inlet and an outlet, a deflector spaced from the outlet, the body having an outer encasing surface surrounding the longitudinal axis and including a leading portion and a trailing portion for insertion in the second insertion end with the leading portion received within the sealing surface before the trailing portion engages the gripping portion.

Abstract: Ceiling only dry sprinkler systems and methods for protection of a storage occupancy employing a mandatory fluid delivery delay period. The systems and methods provide for fire protection of stored commodities of forty-five feet or greater with a hydraulic design ranging from six to eighteen design sprinklers. The systems and methods employ an upright sprinkler having a nominal K-factor greater than 28.

Abstract: A fire protection sprinkler including a frame body having an inlet, an outlet, defining an internal passageway extending between the inlet and the outlet along a sprinkler axis. A dome shaped deflector member is centered, axially aligned with the sprinkler axis, and spaced from the outlet. The deflector member has an outer surface and an inner surface that preferably includes: a peripheral region, a central region and an intermediate region. The intermediate region includes a primary deflecting surface, and a secondary deflecting surface that is surrounded by the primary deflecting surface. The deflector member provides for generation of a non-circular spray pattern defined by four zones of fluid density concentrically formed about the sprinkler axis.

Abstract: A sprinkler assembly includes a body defining an inlet, an outlet, and a fluid passage extending along a longitudinal axis between the inlet and the outlet. A guide pin aperture is defined by at least one of the body or a bushing coupled to the body. The sprinkler assembly further includes a deflector slidably coupled to the body. The deflector includes a deflector body coupled to a guide pin. The guide pin includes a shaft portion extending through the guide pin aperture and a shoulder that is wider than the shaft portion and configured to engage at least one of the body or the bushing to limit movement of the deflector body away from the body.

Abstract: A concealed sprinkler including a body having a proximal portion and a distal portion. The distal portion includes an annular wall defining a chamber and an opening in communication with the chamber. A deflector assembly is disposed within the chamber. A trigger assembly having a lever assembly engaged with an inner surface of the annular wall supports the deflector assembly in the first position, the trigger assembly including and a thermally rated plate assembly having a lip portion to substantially circumscribe and substantially cover opening and chamber.