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

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.

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.

A dual mode vibrator is disclosed. There are available two vibrating units to enable obtainment of a variety of vibrations. Each lateral portion of the first and second vibrating units respectively supported by the first and second elastic members is supported by the first and second support bars secured at the housing for rotatable installation. Therefore, although the first and second vibrating units may rotate about the first and second support bars, the first and second vibrating units are not allowed to deviated or disengaged from the first and second support bars, whereby the plastic deformation of the first and second elastic members is prevented, and the first and second vibrating units can be positioned at predetermined positions at all times to enhance reliability of product. Furthermore, each lateral portion of the first and second vibrating units is respectively supported by the first and second elastic members while the other lateral portions of the first and second vibrating units are restrained by a stopper at a predetermined distance or more.

A horn device includes a trumpet fixture which removably attaches to the valve portion of a canister containing a charge of compressed air. An actuator button on the trumpet fixture is operable to open the valve assembly of the canister causing release of the pressurized air through the trumpet fixture to produce a loud horn noise. One or more light signal lamps are provided on the trumpet fixture. In a preferred embodiment, the light signal lamps are powered by one or more batteries carried on the trumpet fixture. In a further embodiment, a light emitting lamp on the rear facing end of the trumpet fixture is covered with a split color lens, having a green half and a red half to provide auxiliary running lights of a water vessel. In still a further embodiment, the light emitting lamp is provided in a light signaling device which is hingedly attached to the trumpet fixture. Control buttons allow selective activation of the light signal lamps in one or more modes of operation (e.g. steady, flash, flash sequence).

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.

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.

A system and method for a horn controller is provided that automatically operates a vessel's horn as a foghorn. The horn controller automatically causes the vessel's horn to sound according to the proper foghorn sounding schedule. The horn controller is designed to be installed in a new vessel, and / or to be retrofitted to an existing vessel.

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 invention relates to a home appliance with a public security function, specifically, the invention relates to a home appliance which carries out the public security function via a public security perception sensor and a public security control part. The invention includes the public security perception sensor and the public security control part, wherein, the public security perception sensor is used for sensing the matters of security risk, and the public security control part is used for judging whether dangerous matters will happen or not and executing the corresponding security function the basis of the data of the public security perception sensor. When the invention is used, the security function can be carried out without any additional equipment or cost.

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.

An audible output device, of a type usable in a fire alarm system, incorporates a multi-frequency waveform generator. The generator produces a plurality of frequencies with predetermined duty factors during various time intervals on a repetitive basis. The multi-frequency drive signal is in turn coupled to an audible output device such as a piezoelectric horn or the like. The multi- frequency audio output provides an indicator to persons adjacent to the device of the presence of an alarm condition.

The invention relates to an improved diaphragm securing mechanism in a sound wave generator system for an electric horn system that 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.

The present disclosure provides an audible alarm system that utilizes air-conveying ductwork to transport the audible alarm signal from the point of origination to a distant location. This system is low cost and improves the safety of individuals and reduces the potential loss of property by providing early and better hazard communication.

An alarm mat includes a sheet, and sound producer from which sound is produced by air inflow and outflow. The sheet is provided with a plurality of projections made of an elastic material, projecting toward an upper-surface side of the sheet with top portions thereof continuously extending, and each having a sealed cavity inside. The plurality of projections are juxtaposed to each other. The sound producer is loaded in the sheet in a manner that air flows in and out of the projections through the sound producer alone.

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.