Bizarre Patents
A beach chair which can be adapted for a woman who is pregnant and wishes to sunbathe in the prone position.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4525604 | Horn loudspeaker with convex diaphragm A horn loudspeaker with a convex diaphragm in which the throat of the horn is formed by an assembly including the diaphragm, a cover plate for the diaphragm, a tapered plug, and a base, the plug and cover forming linear channels of equal length confrontin... | 06/25/1985 |
| 4524845 | Low frequency speaker enclosure This invention relates to low-frequency speaker enclosures in general, and more specifically to a dual cabinet construction, wherein each of the cabinet structures contains a portion of a generally semi-circular uniform diameter horn passageway, formed by... | 06/25/1985 |
| 4496021 | 360 Degree radial reflex orthospectral horn for high-frequency loudspeakers A radial high-frequency, high-efficiency orthospectral loudspeaker is disclosed in which a horn-loaded, electro-acoustic driver is used and the horn configuration is radial and annular to give a 360° lateral dispersion of the sound generated by the louds... | 01/29/1985 |
| 4493389 | Speaker assembly An acoustic assembly adapted to receive a loudspeaker comprising an enclosed housing having an area defining a loudspeaker port and an area defining at least one sound port, the loudspeaker port being adapted to mount the loudspeaker substantially outside... | 01/15/1985 |
| 4485275 | Inverted horn loudspeaker A loudspeaker includes, in an enclosure, a motor and a diaphragm coupled thereto. An inverted horn couples the surface of the diaphragm through the enclosure. The diaphragm is located in the enclosure with the center line which is parallel to but offset f... | 11/27/1984 |
| 4482026 | Loudspeaker enclosure A loudspeaker enclosure with precisely dimensioned chambers to control and develop loudspeaker back wave energies almost exclusively as acoustical tensions. Focusing of these acoustical tensions is accomplished within each chamber so as to localize the se... | 11/13/1984 |
| 4454927 | Reentrant cone driven loudspeaker A miniaturized cone driven reentrant loudspeaker is provided. A cone spea is positioned within a housing. The housing includes a front wall for radiating sound and a side wall. The cone speaker is directed towards a reflector back plate having a generall... | 06/19/1984 |
| 4441099 | Diaphragm horn An electric diaphragm horn includes a housing having a diaphragm mounted thereon defining a chamber, the chamber being vented to the atmosphere through the diaphragm.... | 04/03/1984 |
| 4437540 | Loud-speaker A loud-speaker of a closed or a bass-reflex type, wherein a plurality of speaker units are intensively arranged behind an opening of a baffle board or a throat of a sounding horn with the sound wave radiating direction thereof being concentrated toward th... | 03/20/1984 |
| 4429762 | Horn loudspeakers of the sectorial diffusion type, and method for making said loudspeakers There is disclosed a method for making horn loudspeakers, of the sectorial diffusion type, characterized by the transformation, in order to operate under predetermined sectorial diffusion conditions, of a horn loudspeaker, predisposed for circular diffusi... | 02/07/1984 |
| 4410064 | Bass response speaker housing and method of tuning same The upper peak impedance of a speaker or woofer that is mounted in a base reflex or ported enclosure is dampened by designing the enclosure so that the speaker is mounted in the upper end of a horn formed in the housing, for example, by inclining its fron... | 10/18/1983 |
| 4392548 | Speaker enclosure and method of producing same An improved speaker enclosure apparatus re-radiates biphase sound emanating from a speaker supported therein. When connected to receive a differential sound signal, the sound produced complements the direct sound radiating from "right" and "left" speakers... | 07/12/1983 |
| 4381831 | High frequency horn A loudspeaker horn is described, which produces good coupling of sound to the atmosphere, while avoiding perturbations in magnitude and phase that would produce large narrow-frequency losses or transient distortions. The horn includes a major sound-reflec... | 05/03/1983 |
| 4348549 | Loudspeaker system A loudspeaker system for radiating acoustic output throughout 360° in generally horizontal planes, comprising an enclosure having low frequency (woofer) and high frequency (tweeter) radiators mounted in spaced relation on a common vertical axis. The horn... | 09/07/1982 |
| 4336861 | Speaker system An improved, compact speaker system for production of the full range of sound audible to the human ear, the sound radiating from the speaker being omnidirectional with the speaker including an outer cabinet shell and a defined chamber configuration within... | 06/29/1982 |
| 4314620 | Loudspeaker with cone driven horn A loudspeaker comprises a horn having an open throat from which a pair of outwardly curved side walls extend. A cone driven speaker is mounted in the horn throat, and the horn with attached speaker is mounted in a base reflex enclosure which forms a chamb... | 02/09/1982 |
| 4313032 | Folded horn loudspeaker system A folded-horn loudspeaker system adapted for high-power audio applications. The system preferably comprises a rigid enclosure of generally cubicle dimensions and an integral, exponentially curved horn projecting outwardly from the enclosure toward the lis... | 01/26/1982 |
| 4251687 | Stereophonic sound reproducing system A loudspeaker unit having an improved quality of bass reproduction for use in a stereo system with a second unit, which is a mirror image of it, to provide a better three-dimensional feeling on hearing the reproduced sound and to provide an increase in th... | 02/17/1981 |
| 4235301 | Folded column speaker enclosure A loudspeaker enclosure for housing a basic speaker and providing a conduit for channeling the sound waves emitted from the back surface of the basic speaker so that the sound waves are shifted in phase and emerge from a port in the enclosure and add to, ... | 11/25/1980 |
| 4220220 | Loudspeaker equipment Loudspeaker equipment embodying a speaker, an enclosure for the speaker which is substantially closed except for the speaker opening and which is formed of walls which are thin and therefore capable of excitation and consequent sound generating vibrations... | 09/02/1980 |
| 4215761 | Bass sound projection systems A bass sound projection system comprises a cabinet containing at least one bass loudspeaker operating into a sound channel. The sound channel converges forwardly, relative to the direction of propagation of sound waves, of the loudspeaker to a throat and ... | 08/05/1980 |
| 4213008 | Loudspeaker enclosure for mid-wall location A loudspeaker enclosure comprising a cabinet to be located adjacent to a wall and having a horn contained therein driven by two loudspeakers oriented at right angles to the axis of the throat portion of the horn in which they are located and on opposite s... | 07/15/1980 |
| 4210223 | Low frequency folded exponential horn loudspeaker apparatus with bifurcated sound path A low frequency loudspeaker apparatus includes a folded exponential horn which is divided to provide a bifurcated curved sound path from at least one electroacoustic transducer that is positioned at the throat of the horn to a volume into which sound wave... | 07/01/1980 |
| 4206830 | Vehicle speaker system provided with a passive radiator Disclosed herein is a speaker system for mounting in a vehicle wherein a passive radiator is provided in the interior of the speaker system. The speaker system is mounted on the rear window tray or shelf of the vehicle so that the radiating surface of the... | 06/10/1980 |
| 4196790 | Acoustic transducer having multiple frequency resonance An acoustic transducer for reproduction of sound over a wide frequency band. The transducer consists of an elongated partially enclosed chamber having a sound source at one end and wherein the cross-sectional area of the chamber is decreased with distance... | 04/08/1980 |
| 4174019 | Dual speaker A dual loudspeaker is set up to handle separately high frequency and low frequency sounds in the same piece of equipment. The apparatus comprises a single housing having a vertical partition dividing the housing into two chambers. A high-frequency driver ... | 11/13/1979 |
| 4173266 | Loudspeaker enclosure A loudspeaker enclosure is disclosed which includes a horizontal bottom wall, parallel spaced vertical front and rear walls connected with the bottom wall, the front wall containing an opening for receiving a loudspeaker, and a horizontal top wall connect... | 11/06/1979 |
| 4169516 | Speaker system A speaker system comprises a cylindrical enclosure and at least one speaker attached to the cylindrical side wall of the enclosure. The speaker is attached to the side wall of the enclosure in such a state that the front thereof is supported at a position... | 10/02/1979 |
| 4168761 | Symmetrical air friction enclosure for speakers The disclosure concerns itself with labyrinth speakers systems which are provided with a plurality of internal partitions which are generally spaced from each other and are provided with apertures therein to form at least one tortuous path for a backwave ... | 09/25/1979 |
| 4158400 | Sound reproducing system A cone speaker is mounted to a horn within a reflex chamber behind a forward opening through the chamber, and the forward end of a horn is attached to the opening. The speaker is connected in the entrance discharging rearwardly into the chamber, and forwa... | 06/19/1979 |
| 4138594 | Small dimension low frequency folded exponential horn loudspeaker with unitary sound path and loudspeaker system including same A small dimension low frequency loudspeaker has a folded exponential horn which provides a unitary curved sound path from an electroacoustic transducer at the throat of the horn to a volume into which sound is radiated at the mouth of the horn. The length... | 02/06/1979 |
| 4134471 | Narrow angle cylindrical wave full range loudspeaker system A loudspeaker system which has a frequency response at any angle located about the speaker system which will be uniform such that the output sound pressure at any frequency from the speaker system will be as great or greater than the sound pressure from a... | 01/16/1979 |
| 4063614 | Combination loudspeaker and sign holder A combination loudspeaker and sign holder having a housing which has enlarged flat parallel end walls joined by narrow end walls. Within the housing is an acoustic horn having a vertical axis and horn end walls diverging downwardly and outwardly. The horn... | 12/20/1977 |
| 4033431 | Acoustic crossover speaker enclosure An acoustic crossover speaker enclosure comprising a multi-sided box having an apertured baffle supporting a horn which in conjunction with the interior of the box defines an air chamber. The horn is supported in an upright position such that the throat o... | 07/05/1977 |
| 3982607 | Loudspeaker cabinet having an integrally constructed horn An integrally formed cabinet for a loudspeaker having a preformed horn for dispersing acoustic energy with minimum distortion.... | 09/28/1976 |
| 3977494 | Adjustable support and housing for a doll and the like The invention relates to a housing which supports a platform for mounting a historic figure, the platform being slidable on tracks mounted in the housing and being held in adjusted positions by friction means cooperable with the track. The housing also en... | 08/31/1976 |
| 3964571 | Acoustic system An acoustic system for disposition proximate to an acoustical boundary comprising at least one acoustic transducer for directing acoustic energy away from the boundary and an acoustic reflector surface extending, without substantial acoustic discontinuity... | 06/22/1976 |
| 3962544 | Sound reproducing devices A sound reproducing device comprising a first (low frequency) speaker and a second (high frequency) speaker, the high frequency speaker mounted within its own housing which allows rear-cone radiation out the housing sides, in addition to front-cone radiat... | 06/08/1976 |
| 3944757 | High-fidelity moving-coil loudspeaker In a moving-coil type loudspeaker, a tubular member of a length longer than the wave-length of any one of the frequencies in a desired frequency range and having a constant cross-sectional area along its length, is coupled, at one end thereof, with one si... | 03/16/1976 |
