Abstract: A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a piston/cylinder relationship. Spaced apart horizontal top and bottom plates are secured to the hub. A mass is slidably supported between the plates. Pistons interconnect the hub and the mass. Hydraulic energy is used to reciprocate the mass vertically on the post and horizontally between the plates.

Abstract: An audible waveform system is provided that senses a parameter relating to the ventilation of a patient. The system produces short bursts of sound of a predetermined frequency as the changes occur in that parameter based on certain increments of change. The bursts themselves are preferable at a frequency that is the same for equal pressures but increases and decreases in frequency as the parameter increases or decreases, respectively. In the preferred embodiment, the system provides an audible waveform based on the pressure in the patient airway so that the clinician can receive information relating to that waveform conveniently and without taking attention away from other monitors and/or alarms.

Abstract: A diving control valve device includes a casing having a nozzle device fitted in the casing for connecting an air source from an air tank, an inflating valve device, a deflating valve device and an alarming valve device integrally encased in the casing for forming a compact valve unit for an ergonomic operation of the inflating valve, deflating valve and alarming valve by a diver's single hand and also for decreasing the frictional water resistance by the compact volume of the integrally formed valve unit in order for facilitating the diving velocity and enhancing the diving maneuverability.

Abstract: The inventive audible warning device includes, in a preferred embodiment, a refillable pressurized air tank having a service port, a cover for covering the service port, an air pump integrated with the tank for filling the tank within pressurized air, an activator for regulating air flow, a hose connecting the tank to the activator, and a horn connected to the activator. The cover also includes a relief valve for depressurizing the tank. In addition, the cover includes locking elements for locking the cover, which can include in turn a rotatable handle that triggers the relief valve when the locking elements are unlocked. A method for producing sound is also disclosed herein.

Abstract: A high output horn for sports' fans can have a pair of plastic tubes spanned at one end by a membrane with a setback of the outer tube from the inner tube of 0.1 to 0.3 mm and a ratio of the inner diameters of the two tubes between 1.1 and 1.7 and a ratio of the outer diameter of the thickness of the membrane spanning the tubes of substantially 1000 to 2000. Air is blown in through a lateral opening in the outer tube and the end opposite the membrane of the air gap between the two tubes is closed.

Abstract: A horn for producing sound at a sporting event or festival has a sound tube coaxially surrounded by a pressure tube with a minimum clearance of 0.2 mm therebetween, a membrane being stretched over the ends of the two tubes and held by a retaining ring under tension. The tubes are held together at the opposite ends by a closing collar which closes the annular clearance and a hole is provided in the pressure tube substantially midway between its ends.

Abstract: An air horn and method of using such a horn is rechargeable by a conventional air pump for use when the air, acting as a propellant, is depleted from its container connected to the horn. The device may be connected to a bicycle or may be used, for example, on a boat. The device is sounded by depressing an activator or an actuator which releases air into a membrane of the horn to vibrate a diaphragm. When air is depleted from the container, an adapter having an inlet valve connected thereto permits connection of a conventional pump or a built-in pump for refilling.

Abstract: The present invention provides an advance warning traffic safety device for warning pedestrians, members of a road work crew, and other persons adjacent a road that a vehicle has strayed from the proper traffic path on the road and may endanger such persons. The advance warning safety device provides an audible alarm which serves as an advance warning to such persons downroad of the traffic safety device. The traffic safety device includes a pressurized fluid container for supplying compressed air to a plurality of horns in response to a vehicle collision with the traffic safety device.

Abstract: A signalling device with a long audible range is described, which is intended for underwater communication between divers. The device consists of a compact and lightweight horn and a rubber bulb. The horn, which works independently from a diver's supply of breathing air, is filled with water and operated by manually squeezing the rubber bulb.

Abstract: The present invention pertains to a warning apparatus with respect to a small sailing craft having a structure for holding a sail. The invention is comprised of a device for signaling that does not require the craft to be seen in order for a signal provided by the signaling device to be noticed. The signaling device is attached to the structure. Additionally, there is a device for activating the signaling device so a signal is produced thereby, the activating device is in communication with the signaling device. In a preferred embodiment, the activating device includes a powering device connected to the signaling device; and a device for actuating the powering device so the signaling device receives power to produce the signal.

Abstract: An alarm apparatus, for use with conventional diving equipment or other self-contained breathing apparatus, having a body portion (34) and a noisemaker portion (32). The body portion (34) includes a first opening (42) therethrough communicating with a connection for a first hose (14) from an air tank. The body portion (34) includes another opening (50) in fluid communication with the first opening in which is positioned a guide element (68). A movable stem element (75) is positioned within said guide element (68). A bore (64) extends between the second opening (50) and the noisemaker portion (32) in which a horn bell (84) supported by a diaphragm (94) are positioned. A button (80) is connected to the stem element (75) and is biased in one position by a spring (82). Actuation of the button (80) results in fluid communication between the first opening (42) in the body portion (34) and the noisemaker portion (32), further resulting in an audible alarm.

Abstract: A portable, personal alarm system (A) which incorporates a loud audio alert (19, 9/10) that, when engaged, is unable to be removed from the user, or terminated without the cooperation thereof. The preferred embodiment of the present invention comprises a small, hand-held alarm system having a strap (5) with a locking mechanism for securely affixing the system to the user, compressed gas containment or electrical power for providing a loud audio horn alert, a locator light (4) for signalling the location of the user in dark areas, and a mechanism for selectively locking the horn alert in the "on" operating position which cannot be reactivated without unlocking the strap, which uses a precoded combination type lock. In use the push button (3) end (24) is placed within the palm so that the push button lies right under the fingers, with the main body (1) extending up along side of the inner side of the wrist.

Abstract: An audible signalling system is provided for us by divers or the like to provide a relatively loud audible signal which can be used to indicate diver position, to signal distress, etc. The preferred system utilizes an air horn carried by the diver and adapted for connection to a pressurized air supply carried by the diver for breathing purposes. When the air horn is connected to the air supply, the horn can be operated to produce a loud audio signal of substantial range which can be heard relatively easily over ambient noise such as wind, water and/or boat noise. In one form, a sonic oscillator for use in underwater signalling is also included.

Abstract: A vehicle air horn is disclosed which is provided with heating cartridges and a temperature sensing switch. The temperature sensing switch automatically turns the heating cartridges on and off at predetermined temperatures. This automatic heating facility enables the horn to remain operational at low temperatures in inclement weather when other unheated horns would be expected to fail.

Abstract: A system whereby the air pressure from the scuba diver's tank is reduced in pressure and is available to blow a horn. When not submerged the horn can be heard for a long distance, up to a mile or more. When in the water the horn produces vibrations and noise which can be detected for a hundred yards or more.

Abstract: A horn for connection to a pressurized fluid container for sounding multiple tones has a horn body defining a sound chamber and at least one tone altering aperture extending through the horn body into the sound chamber, a sound producing mechanism located within the horn body adjacent the sound chamber, and a trigger assembly for actuating the pressurized fluid container for release of pressurized fluid to flow through the sound producing mechanism into the sound chamber to produce a sound. The horn, when the trigger mechanism is actuated, produces sound having a first tone when the tone altering aperture is unobstructed and a second tone when the aperture is obstructed.

Abstract: The present invention pertains to a warning apparatus with respect to a ski-pole. The warning apparatus is comprised of a device for signaling that does not require the ski-pole to be seen in order for a signal provided by the signaling device to be noticed. The signaling device is in juxtaposition with the ski-pole. Additionally, the warning apparatus is comprised of a device for activating the signaling device. The activating device is in communication with the signaling device. In a preferred embodiment, the activating device includes a device for powering the signaling device and a device for actuating the powering device so the signaling device receives power to produce a signal.

Abstract: The present invention pertains to a warning apparatus with respect to a bicycle. The warning apparatus is comprised of a device for signaling that does not require the bicycle to be seen in order for a signal provided by the signaling device to be noticed. The signaling device is in juxtaposition with the bicycle. Additionally, the warning apparatus is comprised of a device for activating the signaling device. The activating device is in communication with the signaling device. In a preferred embodiment, the activating device includes a device for powering the signaling device and a device for actuating the powering device so the signaling device receives power to produce a signal.

Abstract: A pneumatic horn comprises a housing portion, a base portion connected with the latter, a sound horn, which is held in an opening of the housing portion, and a diaphragm which is fixed between the housing portion and the base portion and rests against an inner pipe connection piece. The housing portion and the base portion each comprise a ring. Each ring is connected with a sheet metal jacket or a sheet metal base, respectively, so as to be fixed against rotation relative to it. The housing portion and the base portion carry diaphragm holding surfaces which securely grip the diaphragm all around in a uniform manner when the housing and base portions are screwed together.

Abstract: A pressure regulator includes a valve urged by a spring and a plunger in connection with the spring to adjust the tension of the spring. The plunger has a transverse pin engaging with a camming face of a sleeve around the plunger. The camming face lies in a plane inclining a radial plane of the plunger and causes the plunger to move axially when the transverse pin moves along the camming face.

Abstract: An improved acoustic unit base for electropneumatic horns, of the type comprising a main body peripherally seamed to an end piece with a diaphragm therebetween. Said main body is formed by connecting together a first and a second member of deep-drawn sheet metal, the first comprising a central hole and the second forming a cylindrical seat for receiving a bush with a lipped opening which rests on the diaphragm.

Abstract: The invention relates to an acoustic warning device (especially for automobiles) of the type comprising a diaphragm pressed by a spring on a circular lip at one extremity of a horn. According to the invention the said lip is formed on a synthetic material piece socketed on the external periphery of a tubular portion of a foot, the interior of the said tubular portion receiving, by its extremity opposite to the said piece, the said extremity of the horn.

Abstract: A signal generator comprising one or two horns and an electrically operated ir compressor is secured to a vehicle body, directly or indirectly, by a screw connection which includes a bolt with a hexagonal head received in a seat on a muff of each horn, the seat being formed by an open-ended channel accommodating the head and an adjacent narrower slot traversed by the shank of the bolt. This bolt may be inserted into a hole in the vehicle body or, in the case of two horns, may engage a strap bolted to that body; alternatively, such a strap with a pair of horns fastened thereto can be bolted to the associated air compressor which for this purpose has two diametrically opposite seats each similar to the one on the horn muff, one of these latter seats serving for the bolting of the compressor to the vehicle body.

Abstract: A pneumatic sound generator, such as an automobile horn, comprises a genely cup-shaped housing spanned by a membrane that rests against a central tubular boss forming a seat for the mouthpiece of a cornet through which air admitted into the housing via a lateral inlet escapes as the oscillating membrane is lifted off the boss. The cornet abuts an inner annular shoulder of the boss, together with a tubular insert which is either thermoplastic, received between the metallic cornet and housing, or metallic, seated within the mouthpiece of the thermoplastic cornet. In either case, the thermoplastic part--which preferably has a polygonal or corrugated inner cross-section--is tightly squeezed between two metallic members forcing an annular bead thereof into a surrounding groove of the inner periphery of the boss to form therewith an airtight seal.

Abstract: A sound-producing device, for use with a pressurized fluid container, includes a body having an orifice surrounded by an annular seat, a cap facing the seat, and a diaphragm held taut over the seat, the margin of the diaphragm being tightly gripped between the body and cap. The body and cap are locked together within a housing, the housing also serving to mount the sound-producing device on a pressurized fluid container. The body and cap present annular beads of different diameters for deforming and tightly holding the margin of the diaphragm. A flexible strip permanently connects the body and cap. The parts are assembled by aligning, in side-by-side relation, a plurality of members, each comprising a body, a cap, and a connecting strap, and applying a length of adhesive-bearing flexible tape to the plurality of members, the tape adhering to one of the body and cap, preferably the cap, of each member.

Abstract: A springless diaphragm-type air horn provided with fixed structure for controlling the amplitude of diaphragm oscillation to thereby enable manufacturing of the horn without necessity for any adjustment of parts to achieve tone control.

Abstract: An improved air horn is provided which includes a housing having an inlet for receiving a pressure medium to operate the horn and an outlet for the pressure medium. A first chamber is disposed between the inlet and outlet and receives the pressure medium from the inlet. A conventional sound-emitting horn is connected to the housing for receiving the pressure medium from the outlet, with the horn having a predetermined frequency. A closed resonating tube is connected to the other side of the housing, and a diaphragm is disposed between the first chamber and the resonating tube for oscillating movement in response to pressure changes in the first chamber and the resonating tube. A relatively small diaphragm having a natural frequency higher than the horn frequency is selected, as it is more economical and requires less energy to vibrate it.

Abstract: Disclosed is an air horn comprising a housing and at least two amplifying trumpets attached thereto. Air may be fed from a single source into two sound-generating chambers with which the trumpets are connected by separate passageways to diaphragm-restricted openings of the chambers.

Abstract: A hand-held pressurized fluid powered audible alarm includes a housing in which is mounted a pressurized container having a deflection responsive valve and outlet member projecting therefrom. A horn body is mounted on and in fluid communication with the member and a spring loaded plunger carried by the housing is provided to contact and displace the horn body thereby deflecting the member to supply pressurized fluid for sounding the alarm. The plunger is normally retained spaced from the alarm by a removeable pin passing transversely through the plunger shaft. A ring coupled to the pin is pulled to rapidly remove the pin and irreversibly activate the alarm.

Abstract: An anti-burglar sound emitting device is described in which a pressurized fluid is discharged to audibly oscillate a diaphragm to create a warning signal when an intruder opens a window or a door to enter an area unauthorized to the intruder. The anti-burglary device employs a spring biased actuating member for discharging a pressurized container wherein the fluid is discharged through a passageway and diaphragm valving structure. A mechanical trigger for releasably retaining the actuating member in a cocked position and for releasing the actuating member which moves the slideably mounted pressurized container to cause sound is described.

Abstract: A two-tone signal generator, serving as a horn for automotive vehicles, crises two complementary half-shells whose interior is divided by a common partition into two convoluted wind channels of different length resonating at different frequencies and opening into a common outlet. The inlet to the wind channels comprises a central duct with two lateral branches terminating at a pair of nipples to which a hose from an air blower can be selectively fitted; the junction of the branches with the central duct is an enlarged space containing a freely movable rubber ball which automatically blocks one nipple when air is admitted through the other nipple. The duct communicates with the two wind channels via respective lateral chambers formed in the two half-shells, each chamber being partly closed toward the outside by a lid provided with an eccentric air slot.

Abstract: In a temperature-sensitive alarm device incorporating a horn driven by a propellant which is stored in the liquid state in a pressure vessel, full utilization of the propellant for sounding the horn is obtained by incorporating into the pressure vessel a heat reservoir, such as a sealed bag of water, in order to release heat for maintaining rapid vaporization of the propellant.

Abstract: In a pressure gas driven, back pressure operated sound transmitter a damping chamber having an interior volume at least approximately equal to that of the back pressure chamber is inserted between the operating valve connected to the back pressure chamber and the throttle device bleeding gas from the back pressure chamber into the ambient atmosphere.

Abstract: An alarm used for a bicycle having a cover member formed with a number of apertures, the cover member being disposed on a trumpet-like cylinder of the alarm. The alarm comprises a trumpet-like cylindrical body, a mounting piece receptacle bed formed integral with the cylindrical body, a vocal member encased in the cylindrical body, a bellows-like air blower bag, a cover member, and a mounting piece disposed opposite the receptacle bed. The alarm is designed so that air vibrations may be imparted to the vocal member when the air blower bag is biased and when moved back to its initial state.