A fire extinguisher includes a main dome partially surrounding an internal space housing agent. A secondary dome is mounted to the main dome and is inverted with respect to the main dome. The secondary dome can have a radius of curvature that is equal to, greater than, or less than that of the main dome. The discharge outlet can include a discharge outlet configured to discharge laterally relative to an axis of symmetry of the main dome and the secondary dome.

A fire extinguisher includes a main dome partially surrounding an internal space housing agent. A secondary dome is mounted to the main dome and is inverted with respect to the main dome. The secondary dome can have a radius of curvature that is equal to, greater than, or less than that of the main dome. The discharge outlet can include a discharge outlet configured to discharge laterally relative to an axis of symmetry of the main dome and the secondary dome.

An above ground sprinkler is revealed. The ground sprinkler includes a channel controller, a housing with a driving member mounted therein, an adjustment part, a locking plate, a first cover, and a second cover. A tube is extended to form two plates with a retaining groove therebetween. A rib is disposed on an outer side of the plate. The first cover includes a column part with an insertion part while the second cover includes a tongue part. Locking parts are disposed on the insertion part. The insertion part is fitted over the plates while the ribs of the plates are locked with the locking parts. When the second cover is covered over the first cover, the tongue part is mounted into the retaining groove so that the two plates are leaning against and locked by the locking parts tightly, unable to be released.

Wildfire water-supply hose having a QD nozzle with an outer sleeve adapted to engage a firefighter's backpack water bladder's QD connector. The combination male QD nozzle/female QD system permits rapid and easier bottom-up filling of the bladders without dismounting the tank from the firefighter's back, by inserting the QD nozzle into the female QD fitting on the bottom of the backpack bladder. The QD nozzle tip is long enough to open the internal spring-biased shut-off valve in the female QD connector when inserted. Upon opening the supply line valve, water flows into the backpack bladder until full. The supply valve is closed and the QD nozzle is withdrawn from the bladder female QD connector. Rotation of the QD nozzle outer sleeve controls water flow from stream, to spray to mist. The QD nozzle is also used with other types of nozzles on dual fittings having 3-way valves, e.g., fog nozzles.

Dental articulator systems and dental articulators are disclosed herein. The disclosed dental articulator systems comprise a bite registrator, a dental articulator and a mounting jig. The bite registrator comprises a buccal rail configured to be positioned along the exterior perimeter of a patient's dentition; at least one vestibular component supported by and slidable along the buccal rail for identifying a reference position; and at least one bite registration module supported by and slidable along the buccal rail, and forming an aperture through which bite registration material may be injected into the patient's dentition. The dental articulator comprises an upper articulator member for mounting a maxillary dentition model, and a lower articulator member for mounting a mandibular dentition model. The mounting jig is configured to receive the bite registrator and indicate proper alignment of the position the maxillary dentition model and the mandibular dentition model with respect to one another.

A fire extinguisher includes a main dome partially surrounding an internal space housing agent. A secondary dome is mounted to the main dome and is inverted with respect to the main dome. The secondary dome can have a radius of curvature that is equal to, greater than, or less than that of the main dome. The discharge outlet can include a discharge outlet configured to discharge laterally relative to an axis of symmetry of the main dome and the secondary dome.

A fire extinguisher includes a main dome surrounding an interior. An internal plate is mounted inside the interior of the main dome, dividing the interior into an internal space housing agent and a secondary internal space. The internal space housing agent and the secondary internal space are both pressurized above ambient. The secondary internal space is free of agent, and can be pressurized, e.g., to no less than the total pressure of the internal space housing agent.

Wildfire water-supply hose having a QD nozzle with an outer sleeve adapted to engage a firefighter's backpack water bladder's QD connector. The combination male QD nozzle/female QD system permits rapid and easier bottom-up filling of the bladders without dismounting the tank from the firefighter's back, by inserting the QD nozzle into the female QD fitting on the bottom of the backpack bladder. The QD nozzle tip is long enough to open the internal spring-biased shut-off valve in the female QD connector when inserted. Upon opening the supply line valve, water flows into the backpack bladder until full. The supply valve is closed and the QD nozzle is withdrawn from the bladder female QD connector. Rotation of the QD nozzle outer sleeve controls water flow from stream, to spray to mist. The QD nozzle is also used with other types of nozzles on dual fittings having 3-way valves, e.g., fog nozzles.

A solid foam stick manifold device provides solid stick foam additive to multiple discharge lines. The device includes a housing having an interior space defining a mixing chamber configured for holding a solid foam stick. An inlet extends from the housing and is in fluid communication with the interior space directly into the mixing chamber. An outlet extends from the housing and is in fluid communication with the interior space. The outlet is positioned such that flow through the inlet passes through the mixing chamber before being expelled through the outlet for expelling foam produced by mixing of water with the solid foam stick within the mixing chamber.

A solid foam stick manifold device provides solid stick foam additive to multiple discharge lines. The device includes a housing having an interior space defining a mixing chamber configured for holding a solid foam stick. An inlet extends from the housing and is in fluid communication with the interior space directly into the mixing chamber. An outlet extends from the housing and is in fluid communication with the interior space. The outlet is positioned such that flow through the inlet passes through the mixing chamber before being expelled through the outlet for expelling foam produced by mixing of water with the solid foam stick within the mixing chamber.