Abstract: A sprinkler includes a body including an internal passageway extending from an inlet to an orifice. The body can be made of a composite material, such as a polymeric material. The sprinkler can include a first frame arm extending from the body, a second frame arm extending from the body, and a connector member connecting the first frame arm with the second frame arm.

Abstract: An annular gasket for a fitting assembly includes a gasket inner surface defining a gasket void and a central rib extending radially inward into the gasket void, a gasket axis extending centrally through the gasket void; a gasket outer surface defining a first gasket shoulder extending radially outward at a first axial end of the annular gasket and a second gasket shoulder extending radially outward at a second axial end of the annular gasket opposite the first axial end; a first sealing ridge extending radially inward at the first axial end of the annular gasket; and a second sealing ridge extending radially inward at the second axial end of the annular gasket, wherein the central rib is positioned axially between the first sealing ridge and the second.

Abstract: At least one aspect is directed to a device to configure a fire sprinkler. The device can have an elongated member. The elongated member can have an open end, an opposing closed end, and a body extending laterally therebetween. The open end can receive a portion of a fire sprinkler. The closed end can have a main aperture. The main aperture can receive a portion of a ratcheting socket wrench drive. The closed end can have at least one surrounding aperture. The surrounding aperture can be positioned apart from the main aperture to define a solid partition therebetween. The solid partition can have non-uniform thickness between the main aperture and the at least one surrounding aperture.

Abstract: A sprinkler includes a body, a button, and a spring. The body includes an opening and a shoulder arranged around a sprinkler axis. The spring including an aperture that receives the button, a first spring surface, and a second spring surface. At least one of (i) the shoulder includes a first extension that contacts the first spring surface and (ii) the button includes a second extension that contacts the second spring surface.

Abstract: Disclosed example pipe couplings include: a coupling body having a first coupling segment and a second coupling segment, the first coupling segment having a first lug on a first end and the second coupling segment having a second lug opposite the first lug; a first fastener mounted to the coupling body via the first and second lugs and configured to tighten the pipe coupling; and a first installation indicator on the first lug and arranged to overlap a first indicator face of the second lug as the pipe coupling is tightened, wherein the first installation indicator is in a predetermined alignment with a first counter indicator on the second lug when the pipe coupling is correctly-tightened and is not in the predetermined alignment with the first counter indicator when the pipe coupling is under tightened.

Abstract: A pipe coupling includes a coupling body comprising a first coupling segment and a second coupling segment, each of the first and second coupling segments defining a first end and a second end opposite the first end; a fastener mounted to the coupling body and configured to tighten the pipe coupling from an untightened configuration to a tightened configuration; and an installation indicator arranged between the first end of the first coupling segment and the first end of the second coupling segment, wherein the installation indicator is clamped between the first and second coupling segments in the tightened configuration.

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: 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 installation tool includes a first member, a second member, and at least one bearing. The first member defines an axis and include a first surface transverse to the axis. The first surface includes at least one first opening. The second member includes a second member including a second surface in contact with the first surface. The second surface includes at least one second opening. The at least one bearing is between the at least one first opening and the at least one second opening to engage the at least one first opening and the at least one second opening such that a torque applied to the first member to cause the first member to rotate about the axis relative to the second member causes the second member to rotate with the first member responsive to the torque being less than a target torque of rotation of a sprinkler.

Abstract: At least one aspect is directed to a device to configure a fire sprinkler. The device can have an elongated member. The elongated member can have an open end, an opposing closed end, and a body extending laterally therebetween. The open end can receive a portion of a fire sprinkler. The closed end can have a main aperture. The main aperture can receive a portion of a ratcheting socket wrench drive. The closed end can have at least one surrounding aperture. The surrounding aperture can be positioned apart from the main aperture to define a solid partition therebetween. The solid partition can have non-uniform thickness between the main aperture and the at least one surrounding aperture.

Abstract: A sprinkler includes a body including an internal passageway extending from an inlet to an orifice. The body can be made of a composite material, such as a polymeric material. The sprinkler can include a first frame arm extending from the body, a second frame arm extending from the body, and a connector member connecting the first frame arm with the second frame arm.

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 includes a body, a button, and a spring. The body includes an opening and a shoulder arranged around a sprinkler axis. The spring including an aperture that receives the button, a first spring surface, and a second spring surface. At least one of (i) the shoulder includes a first extension that contacts the first spring surface and (ii) the button includes a second extension that contacts the second spring surface.

Abstract: An input control signal within a range corresponding to static operating states of a circuit device (18) is applied to an input terminal (12). A sigma delta modulator (14) quantizes the input control signal. An output terminal (16) subsequently applies the quantized signal to the circuit device (18) for selecting a new operating state different than the static operating states by rapidly switching between operating states of the circuit device to generate a time averaged response of the circuit device that is within the range corresponding to the static operating states of the circuit device and consistent with the input control signal.