191results about "Mechanical audible signalling" patented technology

A display case having a plurality of compartments with a front covering closing them. A bottom slide dispenses one article at a time, from the bottom of each compartment. As the slide moves, it makes a loud noise to tell the store clerk that someone is dispensing a product. A would-be thief is thus placed on guard that his or her activity is being monitored by the check-out clerk, even if the thief is beyond the line of sight of the clerk.

A method and system are presented for use in determining one or more parameters of a subject. A region of interest of the subject is irradiated with acoustic tagging radiation, which comprises at least one acoustic tagging beam. At least a portion of the region of interest is irradiated with at least one electromagnetic beam of a predetermined frequency range. Electromagnetic radiation response of the at least portion of the region of interest is detected and measured data indicative thereof is generated. The detected response comprises electromagnetic radiation tagged by the acoustic radiation. This enables processing of the measured data indicative of the detected electromagnetic radiation response to determine at least one parameter of the subject in a region corresponding to the locations in the medium at which the electromagnetic radiation has been tagged by the acoustic radiation, and outputting data indicative of the at least one determined parameter.

A system and method for transferring wave energy into or out of a periodic structure having a characteristic wave impedance profile at a prime frequency, the characteristic wave impedance profile comprising a real portion and an imaginary portion, comprising: locating one or more energy transfer elements each having a wave impedance at the prime frequency approximately equal to the real portion of the characteristic wave impedance at one or more points on the periodic structure with the imaginary portion approximately equaling zero; and employing the one or more energy transfer elements to transfer wave energy into or out of the periodic structure. The energy transfer may be repeaters. Quarter-wave transformers can be provided at one or more points on the periodic structure with the imaginary portion approximately equaling zero to transmit waves across one or more discontinuities. A terminator can be employed for cancellation of waves. The invention substantially eliminates reflections of the wave energy at the prime frequency by joints between sections of the periodic structure.

The invention relates to an electromagnetic piezoelectric acoustic sensor (EMPAS). The sensor comprises a piezoelectric sensor plate spaced apart from an induced dynamic electromagnetic field, such as from an electromagnetic coil through which AC current flows. The electromagnetic field induces vibration in the sensor plate by fluctuating the aligned dipole moments of the piezoelectric material. Changes on the surface of the sensor plate can be detected by variation in resonance frequency of the sensor plate. The invention represents an improvement over conventional sensor methodologies in that no metallization of the sensor surface is required, and no permanent magnet is needed. The sensor may be used to detect absorption of molecules or biomolecular interactions between probe and target molecules.

The invention relates to a fire danger warning board, in particular to a multifunctional fire danger warning board for a gymnasium and aims to provide a multifunctional fire danger warning board which can convey information clearly and comprehensively and is high in work efficiency and used for a gymnasium. To solve the technique problem, the multifunctional fire danger warning board for the gymnasium is provided and comprises a fire extinguisher holding box, a bottom plate, a water tank, a right support, a water pump, a swing frame, a first motor, a disk, a connection base, a first swing rod, a connection block, a sliding rail, a sliding block and the like, wherein the fire extinguisher holding box, the water tank and the right support are sequentially arranged at the top of the bottom plate from left to right, the water pump is arranged on the left side of the right support, and a water pipe is connected on the water pump. The multifunctional fire danger warning board can convey information clearly and comprehensively, is high in working efficiency and can increase the escape rate when a fire breaks out.

An acoustic sensor comprises at least one resonant element. A driver comprises an electrical coupling means and an electromagnetic field source arranged such that the electrical coupling means transfers currents to the electromagnetic field source. The electromagnetic field source produces an electromagnetic field that drives the resonant elements to produce acoustic waves directed to a predetermined part of a test sample. Also provided is an electromagnetic detector for receiving the acoustic spectrum omitted from a test sample and an electrical circuit connected to the drive around detector.

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 present invention relates to a failure detecting system that enables the detection of a break in a rail and the like by a simple network configuration. Detecting units (20 and 50), relay units (30A, 30B, 60A through 60C) and terminal units (40 and 70) are arranged along rails (11, 11A and 11B). Using the rails (11, 11A and 11B) as transmission media, ultrasonic waves transmitted from the detecting units (20 and 50) are transmitted to the terminal units (40 and 70) by the relay units (30A, 30B, 60A through 60C), and when the terminal units (40 and 70) receive the ultrasonic waves, the ultrasonic waves are returned from the terminal units (40 and 70), relayed by the relay units (30A, 30B, 60A through 60C), and transmitted to the detecting units (20 and 50). Thus, it is judged whether there is a break in the rails (11, 11A and 11B), based on the ultrasonic wave reception state in the detecting units (20 and 50).

The invention relates to a crushing device, and particularly relates to an injector crushing device for medical waste recovery. The injector crushing device for medical waste recovery mainly achievesthe effects that automatic intermittent discharging is conducted through a machine, then secondary mincing is conducted, and the mincing quality is guaranteed. The injector crushing device for medicalwaste recovery comprises a base, a rough crushing mechanism, a fine crushing mechanism and a storage mechanism, wherein a mounting seat is connected to one side of the top of the base; the rough crushing mechanism is connected to one side of the top of the base; the fine crushing mechanism is connected to one side of the top of the base; and the storage mechanism is arranged on the lower portionof the base. By arranging the rough crushing mechanism and the fine crushing mechanism, secondary mincing is conducted on an entering injector, and the mincing quality is guaranteed; and by arranginga feeding mechanism, intermittent discharging is conducted on the entering injector by driving a quantitative feeding and discharging groove wheel to rotate, and the situation that the mincing qualityis affected due to the fact that too many injectors are added at a time is prevented.

A flash-bang projectile that generates one or more noise pulses and one or more flashes of light. In generating a noise pulse, the flash-bang projectile provides a housing that includes a gas chamber that entraps air. The gas chamber includes a compression device that, when the flash-bang projectile is shot or otherwise ejected by a gun or other form of ejection device, compresses the air that is entrapped in the gas chamber. A burst disk forms one wall of the gas chamber and is configured to rupture a selected time delay after the air has been compressed. Rupturing of the burst disk releases the compressed air entrapped in the gas chamber, allowing the air to be released through a horn nozzle, thereby generating a noise pulse. The flash-bang projectile may have more than one gas chambers, with associated compression devices, whose burst disks are configured to rupture with diverse time delays, in which case the flash-bang projectile can generate multiple noise pulses with corresponding delays. In generating a light flash, the flash-bang projectile includes one or more light generating devices, which may include items such as flash lamps, light-emitting devices, and the like, along with a control module for powering the light generating devices. The control module includes an electrical generating arrangement that uses a portion of the kinetic energy imparted to the flash-bang projectile when it is ejected to generate electrical energy. The electrical energy is, in turn, used to power the light generating devices. Electrical traces on the burst disks are broken when the burst disks rupture to facilitate synchronization of the light flashes with the noise pulses.

The invention belongs to the field of blind person guiding devices, and particularly relates to a safety blindbrick. The safety blindbrick comprises a shell. A brick body is slidingly connected into the shell in a sealed manner, vibration cavities are formed between the shell and the brick body, rings are fixedly connected to the side walls of the vibration cavities through springs, permanent magnets are embedded into the positions, corresponding to the rings, of the brick body, the rings are made of magnetic materials, the rings and the permanent magnets are in heterospolar attraction, four sliding grooves are formed in the brick body, the sliding grooves communicate with the vibration cavities through vent holes, convex blocks are slidingly connected into the sliding grooves through limiting mechanisms in a sealed manner, and the upper ends of the convex blocks stretch out of the brick body. When the walking route of a blind person deviates from a blind, the brick body slightly slides, alarm sound is sent through the rings, the blind person is reminded of correcting the route, dangerous accidents caused by the fact that the blind person deviates from the blind are avoided, the blind person can judge the turning directions of roads ahead according to the rotating directions of the convex blocks, and a good way guiding effect is achieved.

Tubewaves are used to transmit an indication of the depth at which a condition is detected in a well. In particular, the depth is calculated based on the difference in arrival time at the surface of a first tubewave which propagates directly upward in the borehole and a second tubewave which initially travels downward and is then reflected upward. The tubewaves may be generated by a canister designed to implode at a certain pressure. After being introduced into the flowline at an above ground inlet, the canister is carried downhole by gravity and the fluid being pumped. When the canister reaches a depth at which its pressure tolerance is exceeded, it implodes and generates the tubewaves. An analyzer at the surface detects the tubewaves with a hydrophone array and generates a pressure versus depth profile of the well, i.e., one data point for each implosion. Canisters may be acoustically tagged by controlling volume and orifice size in order to generate tubewaves having particular frequency and amplitude characteristics. Canisters may also be configured to produce multiple implosions, e.g., one implosion at each of a selection of different pressures. Canisters may also be equipped with triggering and arming mechanisms, and may generate tubewaves in response to conditions other than a particular pressure.

An apparatus is disclosed that is designed to be able to clean HVAC condensers. The apparatus comprises a plurality of pipes that facilitates the passage of water through them allowing water and / or a cleaning solution to clean the condenser by spraying the condenser with sprayers without having to move the apparatus. The apparatus is designed so as to be able to spray every part of the condenser without having to move the apparatus. The apparatus may also have a timer associated with it that allows the condenser to be cleaned at periodic intervals.

The invention relates to a wireless router, in particular to a wireless router with voice alarm function for internet. The technical problem to be solved in the invention is to provide a wireless router with voice alarm function for internet, and the wireless router is simple in operation, low in cost and timely in alarm. In order to solve the technical problem, the invention provides the wireless router with voice alarm function for internet, comprising a voice alarm device, a lifting rod, a guide plate, a contact roll wheel, a right bracket, an electric wheel, a first pulling rope, a first slide block, a first spring, a first slide rail and so on; the left side of the top part in the left bracket is welded with a second supporting rod, and the lower end of the second supporting rod is connected with a bearing base through the bolt connection. The wireless router with voice alarm function for internet has the beneficial effects of being simple in operation, low in cost and timely in alarm.

A marine acoustic sensor assembly includes an acoustic panel having a forward surface and an after surface, a laser scanner oriented so as to project a laser beam onto the acoustic panel after surface, and a sensor oriented so as to receive reflections of the laser beam off the acoustic panel and to transmit data from which a position of a sound generating source can be determined, wherein the acoustic panel is provided with an absorber layer extending over the after surface thereof, and the absorber layer is provided with holes extending therethrough, the holes being of a size sufficient to permit passage of the laser beams to the acoustic panel after surface and the reflections to pass to the sensor, whereby to minimize reflections and noise originating from aft of the after surface, while permitting sound incoming from forward of the acoustic panel to be measured.

The invention relates to a method for gasifying solid fuel in a co-current gasifier having a fuel silo (14) and a combustion chamber (32). The method comprises a pyrolysis phase in which the fuel decomposes into pyrolysis products, and a gasification phase in which the pyrolysis products are gasified into product gas. Heat transfer from the combustion chamber (32) to the fuel silo (14) is restricted in the method. This is to ensure that the fuel does not dry and pyrolysis does not take place in the fuel silo. The beginning of the pyrolysis is intentionally transferred as close to the gasification phase as possible, and an attempt is made to make the duration of the pyrolysis phase as short as possible. The rise of the fuel temperature is slowed down by transferring heat generated in the gasification phase to a medium, such as gasification air. In the co-current gasifier according to the invention, between the fuel silo and the combustion chamber, there is a cooling channel (18), which restricts the transfer of heat and also functions as a preheater for the gasification air. The gasifier has an upper floor (16a), which forms the upper surface of the cooling channel, and a lower floor (16b) forming the lower surface of the cooling channel, and the fuel silo is placed above the upper floor and the combustion chamber below the lower floor. The combustion chamber of the gasifier comprises an internal jacket (34), an intermediate jacket (36), an external jacket (38) and a grate (40). The gasification air is arranged to be conducted to the combustion chamber through a space between the intermediate jacket and the external jacket.

The invention relates to reminding devices, in particular to a safety reminding device for power circuit repairing. The safety reminding device comprises a base plate, a driven wheel, an electric wheel, pull wires, a straight slide rail, a slider I, a support I, a rack, a support II, a fixing rod I, a gear, a small belt pulley, a flat belt pulley, a fixing rod II, a rotary disc, a large belt pulley, a rubber hammer, a L-shaped connecting rod, a drum, an oblique slide rail, a slider II, a guide rail, a connecting rod, a guide sleeve and a warning sign, wherein the oblique slide rail which inclines towards the left bottom is arranged on the left of the top of the base plate, the driven wheel, the straight slide rail and the electric wheel are sequentially arranged on the base plate from left to right, and the pull wires wind on the driven wheel and the electric wheel. The safety reminding device is novel in structure and capable of achieving timely reminding.

The invention discloses a mechanism in-place operation sound reminding device which comprises a work moving member and a static member arranged thereunder. The lower end of the work moving member is connected with a push rod; and the upper end of the static member is equipped with a rotatable knocking rod, wherein the push rod can move downward vertically and return under the driving of the work moving member, and the push rod drives the knocking rod to rotate when moving downward vertically until the knocking rod knocks the static member and emits a sound. The device can remind the user with the sound when the mechanism operates in place of that an inner running component of a product / mechanism arrives at some special position when going, so that next operation can be carried out, or that the equipment can start working at the moment; and during returning of the device, resistance in the going trip does not be caused to the running component, and thus an energy-saving effect is achieved.

The invention provides a manual pressing doorbell which comprises a shell. A bottom plate of the shell is provided with a ring, and a swing block is mounted on one side of the ring. The swing block is connected with a first spring, and the first spring drives the swing block to swing. A first oblique face is arranged on the upper portion of the swing block, and a dialing block is mounted on the upper portion of the swing block. The dialing block is connected with one end of a pressing handle, and a second spring is mounted on the pressing handle. A long-strip-shaped first through groove is formed in the upper portion of the dialing block 9, and the highest end of the first oblique face is placed on the lower portion of the dialing block and is overlapped when the swing block and the dialing block are in a perpendicular state. The manual pressing doorbell is directly mounted on an anti-theft door, the outer end of the pressing handle is placed outside the anti-theft door, the ring, the swing block, the dialing block, the springs and the like are placed in the anti-theft door, parts are few, matching of all the parts is close, all the parts can be made of metal materials, the service life is long, maintaining is of no need, and tests show that the damage rate of thousands of pressing is zero. The manual pressing doorbell further has the advantages of being easy to mount, capable of achieving standardized processing and the like.

The invention belongs to the technical field of monitoring equipment, particularly relates to intelligent building fire-fighting monitoring equipment, and aims to solve the problems that existing fire-fighting monitoring equipment is mostly subjected to fixed-angle shooting monitoring in use, is low in practical value and is poor in application efficiency in case of fire disasters. According to the provided scheme, the intelligent building fire-fighting monitoring equipment comprises a shell, a base is fixedly installed at the bottom of the shell, a glass cover is installed at the bottom of the base, a containing groove is formed in the bottom of the base, a bottom plate is rotationally connected to the inner wall of the top of the containing groove, two symmetrically-arranged fixing plates are fixedly installed at the bottom of the bottom plate, a camera is rotationally connected between the two fixing plates, a transverse angle adjusting mechanism is arranged on the bottom plate, and a vertical angle adjusting mechanism is arranged on the bottom plate. According to the invention, the operation is simple, the use is convenient, multi-angle adjustment can be conveniently carried out on the camera, the camera can be conveniently cleaned, people can listen to sound and position in smoke conveniently, and the use by people is facilitated.