Bizarre Patents
Combination Beverage Container and Spittoon
A combination beverage container and spittoon includes a bottom portion including outer wall and a first inner wall defining a spittoon space.
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| Number | Title | Issue Date |
| 4565258 | Stereo headset system for use in a wet environment The present invention is a stereo headset system for use with a stereo headset device and a stereo sound system. The stereo headset device is of the stethoscope type and has a pair of sound tubular mains. A coupling plug is mechanically and acoustically c... | 01/21/1986 |
| 4553628 | Speaker system A speaker unit utilizing the sound radiation from the front and rear faces of a diaphragm can be constructed by placing the diaphragm in an acoustic baffle to isolate the back side and front side radiation and propogating the backside radiation through a ... | 11/19/1985 |
| 4535870 | Quick attach-detach mechanism for audio components A portable audio product having multiple components is provided with a quick attach detach mechanism that is adapted for one hand operation. The mechanism includes means for locking the components together in a vibration-free manner such that relative mov... | 08/20/1985 |
| 4509615 | Multi-chamber enclosure for loudspeakers A multi-chamber loudspeaker enclosure comprises a primary chamber having a principal interior volume and a secondary chamber having a minor interior volume substantially smaller than the principal interior volume. The secondary chamber comprises an elonga... | 04/09/1985 |
| 4503930 | Loudspeaker system A loudspeaker system for use in stereo sound reproduction which is adapted to reflect all higher frequency sounds off a reflecting surface before the sounds reach a listener. The system comprises two enclosures, each having two compartments. The lower com... | 03/12/1985 |
| 4502149 | Multi-purpose interchangeable modular auto loudspeaker system A modular high-fidelity loudspeaker system is provided for automotive applications, which system is capable of functioning both as a conventional co-axial loudspeaker unit and as separable lower-frequency and higher-frequency modules. When modules are use... | 02/26/1985 |
| 4437539 | Speaker enclosure A speaker enclosure having a rear bass-reflex chamber and a forward mid-range chamber formed within a substantially rectangular housing. A tunnel-bass port is formed in the bottom section of the front wall of the enclosure, the bottom section being angula... | 03/20/1984 |
| 4398619 | Loudspeaker cabinet A loudspeaker cabinet comprising front, back, top, bottom and side panels, a speaker drive unit positioned on an upper portion of the front panel, first and second spaced apart sound wave reflector panels positioned below the speaker unit and extending fr... | 08/16/1983 |
| 4373606 | Loudspeaker enclosure and process for generating sound radiation Both an improved loudspeaker enclosure and an improved acoustical process for generating sound radiation in a room is herein disclosed. Basically, the walls of the improved enclosure include a loudspeaker, and a sound transmission port for transmitting so... | 02/15/1983 |
| 4365688 | Speaker cabinet High quality stereo sound dispersion is obtained through the use of a speaker cabinet having three tiers of speakers which are effectively sound insulated from one another. The topmost and bottommost tiers have speakers which are oriented in divergent dir... | 12/28/1982 |
| 4357490 | High fidelity loudspeaker system for aurally simulating wide frequency range point source of sound The loudspeaker system utilizes an ellipsoidal reflector of substantially the same diameter as the low frequency (LF) driver, positioned on-axis of the LF driver, as a reflective dispersing means for increasing the angular dispersion of acoustical energy,... | 11/02/1982 |
| 4325454 | Speaker system which inverts and redirects the speaker backwave A speaker housing includes an air-impermeable first chamber in which first and second speakers, each having diaphragms which vibrate in operation, are so mounted that the rear surfaces of the diaphragms of both speakers face the inside of the first chambe... | 04/20/1982 |
| 4313521 | Speaker housing An improved loudspeaker housing including a closed chamber in the shape of a triangular right prism closed at both ends. All of the three walls of the prism and rectangular in shape and two of the walls are at right angles to each other. A circular openin... | 02/02/1982 |
| 4301889 | Speaker enclosure A speaker enclosure comprising a cabinet that defines an upper compartment and a lower compartment. A sectorial horn is mounted in the upper compartment and a prismatic member is disposed across the outlet of the horn to direct the sound energy upwardly a... | 11/24/1981 |
| 4289929 | Loudspeaker and enclosure combination A loudspeaker enclosure is shaped as a truncated pyramid with all vertical edges being smoothly rounded. A high-frequency speaker is mounted in an individual spherical shell and affixed to the top of the truncated pyramid. Other speakers are mounted insid... | 09/15/1981 |
| 4284168 | Loudspeaker enclosure A loudspeaker enclosure for use in housing loudspeakers, the loudspeaker enclosure comprising a casement having a generally rectangular cuboid shape, the casement including three layers. A first layer and a second layer comprise sheets of metal and are sp... | 08/18/1981 |
| 4276446 | Acoustic transducer system At least one active and one inactive speaker element or radiator are mounted in each of a plurality of differently sized speaker housings, each of which housings has a fundamental resonant frequency different from each of the other housings. An audio sign... | 06/30/1981 |
| 4213515 | Speaker system A speaker system comprises an enclosure and at least one speaker mounted therein. The enclosure includes at least one duct connecting the interior of the enclosure directly with the outer air at the front thereof. Each duct is confined at least at one sid... | 07/22/1980 |
| 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 |
| 4199657 | Planar sound reproducing speaker system A speaker system, comprising for each of its channels, a stand supporting a midrange unit, from the housing of which a plurality of tubular supports emanates radially and equidistantly, a tweeter unit mounted on the free end of each of the tubular support... | 04/22/1980 |
| 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 |
| 4179008 | Structure and arrangement for loudspeaker assemblage A loudspeaker assemblage is made up of a group of cylindrical speaker housings, with a speaker mounted in each housing. A respective spacer in the form of a wedge block or angle sleeve is interposed between adjacent housings, so that housing end closures ... | 12/18/1979 |
| 4178473 | Two-way loudspeaker for vehicle A combination speaker assembly including an annular housing having a peripheral wall with an opening therein and having first and second open ends, a first speaker for reproducing audio mid frequencies and audio high frequencies mounted essentially within... | 12/11/1979 |
| 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 |
| 4146745 | Loudspeaker enclosure with multiple acoustically isolated drivers and a common port A multiple driver loudspeaker system comprises two angularly spaced rear rectangular baffles each nearly filled with four closely spaced full-range small loudspeakers with a port tube passing through the center of each rear baffle and the junction therebe... | 03/27/1979 |
| 4139734 | Pivoted loudspeaker enclosure with visual indicator of optimum listening position The present invention provides a loudspeaker comprising a plurality of enclosures each provided with a loudspeaker drive unit connected to an input, at least one of the enclosures being pivotally mounted with respect to another of the enclosures, said at ... | 02/13/1979 |
| 4136755 | Loudspeaker system for a vehicle A loudspeaker system for the passenger compartment of a vehicle, such as an automobile, is disclosed. The system has at least two loudspeakers arranged on opposite sides of the passenger compartment in the end regions of a rigid, hollow support element wh... | 01/30/1979 |
| 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 |
| 4122302 | Two way dynamic and electrostatic speaker enclosure with side vent for greater high frequency dispersion An electroacoustic transducer, especially an electrostatic speaker embodying a conductive perforated backing plate, a dielectric membrane carrying a conductive coating, and an intervening spacing layer formed of acoustically porous or transparent dielectr... | 10/24/1978 |
| 4057689 | High fidelity sound reproduction system and modules thereof A multiplicity of sound modules are mounted on a number of baffle plates which define an essentially continuous surface, e.g., a ceiling. Each sound module consists of a loudspeaker and a cavity-defining member which may be a thin-walled shell or a rectan... | 11/08/1977 |
| 4033430 | Speaker enclosure A speaker is enclosed in furniture cabinets consisting of three units. The base cabinet, supported on legs, is a rectangular parallelepiped and accommodates a full range speaker. The top cabinet is pyramidal and accommodates a tweeter at one of its sides.... | 07/05/1977 |
| 4031318 | High fidelity loudspeaker system A high fidelity loudspeaker system involving a multidriver, semi-omnidirectional, full range, electrodynamic loudspeaker including two, separate but complementary, closed box-like enclosures, an upper unit containing an array of mid-range speakers around ... | 06/21/1977 |
| 3944020 | Speaker headrest for motor vehicles A stereophonic speaker headrest for motor vehicles includes a rigid interior shell and a padded cover. The rigid interior shell is generally hollow with a pair of opposed side wing members having speaker attachment structure therein for holding a speaker ... | 03/16/1976 |
