摘要:
A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the water heater a combustion air shutoff system having a heat-frangible temperature sensing structure disposed within the combustion chamber senses an undesirable temperature increase in the combustion chamber, caused by for example a partial blockage of the flow path, and responsively terminates further air flow into the combustion chamber, thereby shutting down the burner, prior to the creation in the combustion chamber of a predetermined elevated concentration of carbon monoxide.
摘要:
A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the water heater a combustion air shutoff system having a heat-frangible temperature sensing structure disposed within the combustion chamber senses an undesirable temperature increase in the combustion chamber, caused by for example a partial blockage of the flow path, and responsively terminates further air flow into the combustion chamber, thereby shutting down the burner, prior to the creation in the combustion chamber of a predetermined elevated concentration of carbon monoxide.
摘要:
A domestic water supply shutoff valve for use with fire protection system water supply piping has a body defining a volume for flow of water through the valve, with a supply inlet for connection to a supply of water, a first outlet for connection to fire protection system water supply piping, and a second outlet for connection to domestic system supply piping. A first passageway is defined within the body for flow of water from the supply inlet toward the first outlet. A second passageway is defined within the body for flow of water from the supply inlet toward the second outlet. A poppet valve is disposed within the body and mounted for movement between a first position for permitting flow of water from the inlet toward the first outlet and a second position for permitting flow of water from the inlet toward the second outlet, the poppet valve being biased toward the second position.
摘要:
A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a predetermined, undesirably high concentration of carbon monoxide present in the combustion chamber. In various illustrated embodiments thereof, the combustion shutoff system is operative to terminate further combustion air inflow to the combustion chamber, or terminate further fuel flow to the burner portion of the water heater.
摘要:
A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a predetermined, undesirably high concentration of carbon monoxide present in the combustion chamber. In various illustrated embodiments thereof, the combustion shutoff system is operative to terminate further combustion air inflow to the combustion chamber, or terminate further fuel flow to the burner portion of the water heater.
摘要:
A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the water heater a combustion air shutoff system having a heat-frangible temperature sensing structure disposed within the combustion chamber senses an undesirable temperature increase in the combustion chamber, caused by for example a partial blockage of the flow path, and responsively terminates further air flow into the combustion chamber, thereby shutting down the burner, prior to the creation in the combustion chamber of a predetermined elevated concentration of carbon monoxide.
摘要:
A water movement system and method configured to eradicate and/or control mosquito or insect populations that lay eggs in treated, stagnant water environments. The system is comprised of a water pump configured to function in cooperation with an underwater insect attractant device. The insect attractant device is suitably constructed to generate carbon dioxide for attracting insects to a water extermination zone or trap. In one embodiment, the underwater insect attractant device contains organisms such as mycelia for generating the carbon dioxide. Insects are attracted by the carbon dioxide generation device to reproduce in the water extermination zone, using the treated water to lay eggs, and grow larvae and pupae for the subject insects. A solar-powered water pump device is configured to direct the flow of water from the water extermination zone toward filters of the water pump device to trap and kill insect progeny including eggs, larvae, and pupae.
摘要:
A magazine assembly presents a pressure cartridge to a compressed gas powered device, such as a gun, wherein the magazine assembly has a cartridge support biased with respect to a magazine to urge the pressure cartridge to a short (or seated) position, wherein an interlock plate is biased to engage the cartridge support. The bias on the interlock plate is overcome during insertion of the magazine assembly into a magazine chamber, at which point the cartridge support moves relative to the magazine in response to a seated length of the pressure cartridge. The bias on the interlock plate then controls the positioning of the interlock plate to engage the cartridge support and retain the pressure cartridge relative to the magazine assembly. A lever connected to the gun then engages the magazine assembly to translate the magazine assembly relative to the gun and pierce the pressure cartridge.
摘要:
A BB holder for a gun comprises an elongated cylindrical body having a cylindrical side wall, a bottom wall, and an open top end and a cap having a cylindrical side wall which is ensleeved over the cylindrical side wall of the body. The holder has the shape and size of a shot gun shell and is stored in a chamber in the stock of a gun. If the gun has a BB reservoir, the BB reservoir can communicate with the chamber through a port opening which is closed when the holder is inserted into the chamber.
摘要:
Computer software for and a method of determining location of a target image within a two-dimensional input image by employing a three-dimensional reference image comprising determining object edge points in the input image; given estimated seeker line-of-sight orientation and range data, computing a two-dimensional reference image from the three-dimensional reference image; applying a weighted-direction-cross-product Hough Transform to the object edge points and points of the two-dimensional reference image; classifying the input image as containing a target image or not; if the image contains a target image, identifying a location of the target image within the two-dimensional input image; computing confidence measure as to the selected location of the target image; and in the case of sequential decision, also performing confidence accumulation through multi-frames or multi-looks.