Abstract: The present embodiments relate to a digital over speed circuit including a controller configured to calculate the speed of an engine and shut down the engine electronically when an over speed condition exists. The digital over speed circuit may be easily installed by the end user. Only a single wire is needed between the digital over speed circuit and the engine. Further, the digital over speed circuit does not require a reset or any user action of any kind after the over speed condition has been detected and power removed from the engine. In other words, there is no ON switch, and the user may immediately start the engine again after the engine has stopped and the digital over speed circuit has reset.

Abstract: A system for automatically controlling a pumping unit used in fire suppression comprises a pumping unit, a water flow sensor and a pump controller. The pumping unit has a pump with a suction inlet configured to receive water from an upstream pumping unit and an engine to run the pump. The water flow sensor senses water flow into the suction inlet of the pumping unit. The pump controller receives a water flow sensor signal from the water flow sensor and controls an on/off state of the engine based on the water flow sensor signal.

Abstract: A backpack adapter comprising a generally L-shaped frame having a user side and a load side. The user side is provided with at least two coupling means for coupling a shoulder strap means thereon, the coupling means being spaced apart from each other. The L-shaped frame comprises a top L portion and a bottom L portion and the shoulder strap assembly is placed on either coupling means in order to either have the bottom L portion closer to the ground than the top L portion or reversibly have the top L portion positioned closer to the ground. The adapter can be used in at least two significantly different configurations: one by which the bottom L portion is used to carry a load on an upper side of said bottom L portion, the other by which the bottom L portion is used as a rack from which objects are hung.

Abstract: A method and apparatus are disclosed for filtering out particles in a fluid, the method comprising providing the fluid, creating a turbulent flow in the fluid, and collecting the particles.

Abstract: A method and apparatus are disclosed for controlling a relay pumping setup comprising an upstream pumping unit for pumping a liquid into a relay reservoir and a downstream pumping unit for pumping from said relay reservoir to a given location, the method comprising receiving a relay reservoir liquid level indication indicative of a liquid level in the relay reservoir and providing a control signal to at least one of the upstream pumping unit and the downstream pumping unit depending on the received relay reservoir liquid level indication.

Abstract: A system for automatically controlling a pumping unit used in fire suppression comprises a pumping unit, a water flow sensor and a pump controller. The pumping unit has a pump with a suction inlet configured to receive water from an upstream pumping unit and an engine to run the pump. The water flow sensor senses water flow into the suction inlet of the pumping unit. The pump controller receives a water flow sensor signal from the water flow sensor and controls an on/off state of the engine based on the water flow sensor signal.

Abstract: Methods and apparatus for a remote starting system for an engine-driven pump are provided. The system includes a remote starter controller communicatively coupled to the engine-driven pump, and configured to transmit an engine start signal to the engine wherein the remote starter controller is positioned remotely from the engine-driven pump. The system includes an engine start sensor communicatively coupled to the engine and configured to determine whether the engine started in response to the engine start signal, and an engine start indicator configured to indicate to a user that the engine has started in response to the engine start signal.

Abstract: A system for driving multiple fire suppression accessories comprises a multi-drive converter unit and a first fire suppression accessory. The multi-drive converter unit has an input configured to be coupled to an engine output drive shaft of an engine and has at least two accessory drive shafts. The at least two accessory drive shafts are driven by the input and are configured to be coupled to at least two accessories. The first fire suppression accessory is detachably coupled to a first of the at least two accessory drive shafts.

Abstract: A backpack adapter comprising a generally L-shaped frame having a user side and a load side. The user side is provided with at least two coupling means for coupling a shoulder strap means thereon, the coupling means being spaced apart from each other. The L-shaped frame comprises a top L portion and a bottom L portion and the shoulder strap assembly is placed on either coupling means in order to either have the bottom L portion closer to the ground than the top L portion or reversibly have the top L portion positioned closer to the ground. The adapter can be used in at least two significantly different configurations: one by which the bottom L portion is used to carry a load on an upper side of said bottom L portion, the other by which the bottom L portion is used as a rack from which objects are hung.