117results about "Hydraulic/pneumatic audible signalling" patented technology

A warning device configured for removable mounting in combination with a high pressure gas cylinder and a regulator used to regulate the high pressure gas supplied by the cylinder. The device compression mounts between the regulator and tank outlet on conventional portable oxygen and gas supply systems using a specially configured manifold. The device features one or a combination of alarms, from a group including audio, visual, electronic, and remotely transmitted alarms. These alarms are activated by a pressure switch monitoring the remaining supply in the gas cylinder through a conduit the manifold. The alarm signal from the device alerts the user, or a third party monitoring the user, of current tank pressure or will sound an alarm when remaining high pressure gas inside the gas cylinder drops below a predetermined level.

An alert device that includes a tubular encasement holding battery powered marking light, a compass and a whistle, the tubular encasement and whistle are threadedly interconnected and rotating the whistle of the device with respect to the tubular encasement serves to provide electrical communication activating the light, with the light serving to light up the face of the compass.

An electropneumatic acoustic horn is disclosed, comprising an electric compressor unit for generating compressed air and a sound wave generator comprising at least an acoustic chamber associated to at least a volute wound acoustic duct adapted to propagate the produced sound to the outside. Air channelling means put the compressor unit in communication with each acoustic chamber. The compressor unit and the sound wave generator are mechanically connected in a removable way by fitting slidingly a collar.

A gas flow alarm includes a main barrel with a proximal end and a distal end. The main barrel defines a gas flow direction from the proximal end to the distal end. A cap is disposed slidingly on the main barrel between a proximal position and a distal position. The proximal position of the cap defines a compressed condition of the gas flow alarm and the distal position of the cap defines an expanded condition of the gas flow alarm. A noise generating device is disposed within the main barrel. The noise generating device is adapted to generate noise from the gas flow when the gas flow alarm is in the expanded condition.

The invention relates to a pneumatic low pressure warning device, which is characterized in that the device comprises a pressure detection mechanism, a micro switching valve and a warning mechanism; and two paths of gas are output through a tee from a gas source, wherein one path is delivered to a gas source inlet of the pressure detection mechanism to detect the pressure of the gas source, and the other path is delivered to a gas source inlet of the micro switching valve and taken as driving gas flow of the warning device. Compared with the prior art, the pneumatic low pressure warning device has the advantages that the warning device needs no power source, is completely driven by the gas source, can be used as a low pressure warning mechanism in a full pneumatic control respirator or other pneumatic products, and has high precision, simple structure, low cost and easy realization.

The invention discloses a fire extinguishing floor. The fire extinguishing floor comprises a floor body, wherein a cavity is formed in the floor body, a partition plate is hermetically and fixedly connected to the inner wall of the cavity, the partition plate divides the cavity from top to bottom into a liquid storage cavity and a reaction cavity, a HCl solution is contained in the liquid storagecavity, CaCO3 particles are placed in the reaction cavity, and a plurality of temperature sensing triggering devices are arranged on the inner top wall of the liquid storage cavity at equal intervalsfrom left to right; the temperature sensing triggering devices comprise top grooves formed in the inner top wall of the liquid storage cavity, annular limiting grooves are formed in the inner walls ofthe top grooves, limiting plates are hermetically and slidably connected in the limiting grooves in the vertical direction, and the limiting grooves, the top grooves and the limiting plates jointly form an expansion cavity. The fire extinguishing floor has the advantages that combustible materials are isolated from oxygen, the fire extinguishing effect is achieved, so that the fire spreading is restrained, and the property of residents is protected; the CO2 flowing through an air injection channel can " blow " an alarm whistle to remind the residents to fight fire or withdraw in time, and thesituation of casualties of the residents caused by untimely fire discovering or withdrawing is avoided.

The present electric horn system includes a monolithic rigid housing member having a receiving opening for fixably housing, in an non-removable and secure manner following assembly, a compressor member, thereby preventing unintended separation and improving a reliability of the electric horn system. An acoustic sound wave generator includes an acoustic duct chambering system associated throughout with the monolithic rigid housing member. The acoustic sound wave generator receives compressed air from the compressor member to produce sound and propagate the same externally. A horn mounting system enables ready attachment of the system to a consumer-desired surface; either mechanically, magnetically, adhesively or via any other known attachment or mounting system. Optional weather and water resistant systems prohibit unintended water access to the electric horn system enabling use of the system in exposed weather conditions for improved user convenience.

An acoustic device operative to generate high-power acoustic tones having a combustion based or chemical reaction based fluidic power source, an aeroacoustic generator, an assembly to provide feedback, and an array hosing that shapes the output pattern of the sound waves. The combustion or chemical / energetic reaction of one or more solid and / or liquid chemicals used as the source of pressurized gas is similar to a rocket engine or a gas generator which turns liquid and / or solid fuels into relatively massive volumes of pressurized gas. Examples of these generators are edge tone generators, sirens, vibrating reeds and unstable shock generators. In the case of edge tone generators, a physical resonant cavity assembly must be included around the effluent flow to provide feedback serving the purpose of stabilizing the output acoustical power and tonal properties. An array assembly is added to the aeroacoustic generator in order to shape the output pattern of the sound energy.

A portable air horn apparatus. The apparatus includes an air horn adapted to generate sound when supplied with air under pressure, an air compressor adapted to generate air under pressure, an air conduit interconnecting the compressor and the air horn enabling the air under pressure generated by the compressor to be supplied to the air horn, an electric motor adapted to operate the air compressor when energized, a portable source of electrical energy, and electrical circuitry electrically connecting the portable source of electrical energy to the electric motor to enable the electric motor to be energized. The circuitry includes a manually operable on-off switch having a first position opening the circuitry and a second position closing the circuitry. A housing is provided for physically supporting and interconnecting at least the air horn, compressor, electric motor, on-off switch and portable source of electrical energy, and includes a handle adapted to be manually graspable by a user of the device.

A personal defense device for being used during an attack having a defense component having a defense member and an aerosol directing system, an alarm component having an alarm member and an alarm directing system, and a housing where the housing is capable of receiving the defense component and the alarm component, the defense component is capable of emitting a self-defense aerosol, and the alarm component is capable of emitting an alarm signal.

The invention relates to the technical field of fire fighting equipment, and discloses an alarm type fire proof door with high fire resistance. The alarm type fire proof door with the high fire resistance comprises a fire proof door body, a door lock fixedly installed in the middle of one side of the fire proof door body and a door closer fixedly installed at the top of the fire proof door body. Aheat absorption tank is formed in the inner bottom of the fire proof door body, the heat absorption tank is filled with non-combustible liquid heated to produce gas under atmospheric pressure, a plurality of supporting rods are arranged in the heat absorption tank, a vertical gas guide pipe is arranged at the position, located above the heat absorption tank, in the fire proof door body, and a horizontal jet groove is formed in the position, located above the air guide pipe, of an inner cavity of the fire proof door body. According to the alarm type fire proof door with the high fire resistance, by forming the heat absorption tank at the inner bottom of the fire proof door body and filling the heat absorption tank with the non-combustible liquid heated to produce the gas, the bottom of thedoor can be heated and vaporized to have heat absorption performance when a fire occurs, the fire resistance duration can be prolonged on the basis of existing fire proof door materials, and the fireresistance of the fire proof door can be improved effectively.

A breathing apparatus having one or more safety sensors that monitor the breathing gas supplied to a ventilation interface for contaminants. Upon detection of a threshold value of a contaminant, the apparatus activates one of more alarms, such as strobe lights, horns and / or piezo buzzers, to waken the user to the dangerous condition. The alarm may also comprise a notification system to first responders.

The present electric horn system includes a monolithic rigid housing member having a receiving opening for fixably housing, in an non-removable and secure manner following assembly, a compressor member, thereby preventing unintended separation and improving a reliability of the electric horn system. An acoustic sound wave generator includes an acoustic duct chambering system associated throughout with the monolithic rigid housing member. The acoustic sound wave generator receives compressed air from the compressor member to produce sound and propagate the same externally. A horn mounting system enables ready attachment of the system to a consumer-desired surface; either mechanically, magnetically, adhesively or via any other known attachment or mounting system. Optional weather and water resistant systems prohibit unintended water access to the electric horn system enabling use of the system in exposed weather conditions for improved user convenience.

The present electric horn system includes a monolithic rigid housing member having a receiving opening for fixably housing, in a non-removable and secure manner following assembly, a compressor member, thereby preventing unintended separation and improving a reliability of the electric horn system. An acoustic sound wave generator includes an acoustic duct chambering system associated throughout with the monolithic rigid housing member. The acoustic sound wave generator receives compressed air from the compressor member to produce sound and propagate the same externally. A horn mounting system enables ready attachment of the system to a consumer-desired surface: mechanically, magnetically, adhesively, or via any other known attachment or mounting system. Optional weather and water resistant systems prohibit unintended water access to the electric horn system enabling use of the system in exposed weather conditions for improved user convenience.

A water-powered residential fire suppression and alarm system is provided. The system comprises a sprinkler head, a water-powered alarm, a fire-resistant transfer line assembly, and a housing assembly. The sprinkler activates upon excessive heat. The transfer line assembly provides an unclosable channel connecting an existing residential water fixture with the sprinkler head. The transfer line assembly includes a fire-resistant transfer line connected to a multi-port coupling which connects to the existing water fixture. The transfer line assembly also provides water to the alarm. The housing assembly has a housing with a vertical span of about 3-12 inches. The sprinkler head and alarm are mounted to the housing assembly and the transfer line assembly is connected to the housing assembly. When water is provided to the coupling and the sprinkler head activates, water flows through the transfer line, activating the alarm.

The invention belongs to the technical field of vehicle assistance, and particularly relates to an anti-breakage electric wire for a new energy charging gun pile, the anti-breakage electric wire comprises a charging pile body, a charging wire is fixedly connected to the outer surface of one side of the charging pile body, and in the working process of the charging pile body, when vehicle charging is completed or the charging time is over or a driver encounters an emergency, the charging wire is disconnected. When a driver directly drives away and forgets to pull out the charging gun, airflow enters a gradually narrow gap from the first air bag, the speed of the airflow is higher and higher, the airflow is cut by the inclined face of the sound production hole, high-speed airflow turbulence is caused, the turbulence airflow entering the resonance cavity generates resonance, then a sharp sound is made, and then the driver in driving is reminded. When the vehicle is charged, a driver is reminded to stop the vehicle in time, the charging gun is put back to the charging pile body, and then when the vehicle is charged or the charging time is over or the driver encounters an emergency, an alarm can be given out in time to remind the driver, so that accidents are avoided.

The invention provides a protective gas device with a reminding function for 3D printing, and belongs to the technical field of protective gas devices for 3D printers, the protective gas device comprises a pair of circular guide columns with two through ends, the adjacent ends of the pair of circular guide columns with two through ends are fixedly connected with one end of a connecting opening, and a circular opening is reserved in a square frame; hoop sleeves are hooped on the peripheral surfaces of the pair of connecting openings, and clamping assemblies are arranged in the edges of the square frame. In the prior art, a protective gas device used as a protective gas system comprises a gas cylinder, pressure reducing equipment, steel pipes and the like, the pressure reducing equipment is an argon pressure reducing valve or a pressure regulating valve, protective gas overflows at the joints between the gas cylinder and the steel pipes, between the pressure reducing equipment and the steel pipes and between the steel pipes, and workers cannot be informed to process the protective gas; and if the treatment is too slow, the loss of the protective gas is caused, the concentration of the indoor protective gas is increased, and if the concentration is too high, the breathing discomfort of workers is caused.

The invention discloses a novel fire door. The novel fire door comprises a door body, wherein a water storage cavity and a state changing cavity are formed in the door body in sequence from top to bottom; the inside of the state changing cavity is horizontally and fixedly connected with a partition plate in an airtight manner; the partition plate is used for dividing the state changing cavity intoa pressurization cavity and an evaporation cavity from top to bottom; the water storage cavity and the evaporating cavity are respectively filled with water and evaporation liquid; a temperature sensing plate is embedded in a corresponding position of the evaporation cavity on the outer side of the door body; a one-way air inlet hole communicated with the pressurization cavity and the evaporationcavity is formed in the middle part of the partition plate; the top end of the pressurization cavity is communicated with a gas spraying pipe; and a pressure valve is mounted in the gas spraying pipe. The novel fire door has the advantages that the evaporation liquid is vaporized after continuously receiving heat and is sprayed out by the gas spraying pipe after certain pressure is accumulated inthe pressurization cavity, so that the water in a capillary pipe is automatically extruded and torn for carrying out spray extinguishing treatment on the fire on the outer side of the door body and reducing the extension of the fire to a certain extent.

The invention belongs to the field of building fire-fighting equipment, and in particular discloses a wall embedded open-installation hydraulic alarm device and an installing method of the wall embedded open-installation hydraulic alarm device, wherein the wall embedded open-installation hydraulic alarm device comprises a sound reflector, a hydraulic alarm bell and two pipe bodies which are embedded in a wall; the sound reflector is a metal component formed by a concave arched surface or formed by combining a concave arched surface with a plane; and the hydraulic alarm bell is arranged in the middle of the concave surface of the sound reflector. The installing method of the wall embedded open-installation hydraulic alarm device disclosed by the invention is easy to operate and convenient to install, and can be installed, connected and fastened according to structures. The wall embedded open-installation hydraulic alarm device and the installing method disclosed by the invention are rational in design, simple in process and attractive in appearance, and have functions of protecting and amplifying the sound, so that the sound effect is enhanced, and personal safety and property safety of the user are guaranteed; the hydraulic power is adopted to generate the sound, so that the energy is saved and the environment is protected; and the wall embedded open-installation hydraulic alarm device has a remarkable economic benefit.