Bizarre Patents
Microwave Oven With Removable Storage Cassette in Dashboard of Motor Vehicle
A microwave oven adapted for use within a motor vehicle dashboard area. The microwave oven has a removable storage cassette, and slidable platforms for securing and serving containers of beverages and foods.
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| Number | Title | Issue Date |
| 5004069 | Stamp formed muffler with transverse baffle tube A muffler is provided with a pair of plates formed to define an array of tubes therebetween. At least one external shell is secured to at least one of the plates to surround selected portions of the tubes. The shell is formed to define a plurality of cham... | 04/02/1991 |
| 4979587 | Jet engine noise suppressor A compressor bleed air passageway includes a duct having an upstream section (48) which terminates in a baffle (44) and a downstream duct section (54) having a forward portion (56) which surrounds the baffle (44). Bleed air flow through openings (58) in t... | 12/25/1990 |
| 4958701 | Stamp formed muffler with pocket-free baffle crease A stamp formed muffler includes upper and lower internal plates and upper and lower external shells secured to the respective internal plates. The internal plates are formed to include arrays of channels that are placed in register with one another to def... | 09/25/1990 |
| 4909348 | Stamp formed exhaust muffler with conformal outer shell A stamp formed exhaust muffler for mounting on a vehicle is provided. The muffler comprises a plurality of plates secured in juxtaposed relationship and stamp formed to define an array of tubes therebetween. At least one external shell is secured to the i... | 03/20/1990 |
| 4892168 | Noise attenuating device A resonator used in an exhaust system of an automotive internal combustion engine. The resonator defines therein a resonance chamber and provided with an exhaust gas inlet tube through which exhaust gas is introduced into the resonator. An exhaust gas out... | 01/09/1990 |
| 4860853 | Stamp formed muffler with nonplanar array of tubes A stamp formed muffler is provided with a nonplanar array of tubes. The tubes are defined by at least one pair of nested formed members. The nested members include at least one external shell having a nonplanar portion and at least one internal plate havi... | 08/29/1989 |
| 4821840 | Stamp formed exhaust muffler with conformal outer shell A stamp formed exhaust muffler for mounting on a vehicle is provided. The muffler comprises a plurality of plates secured in juxtaposed relationship and stamp formed to define an array of tubes therebetween. At least one external shell is secured to the i... | 04/18/1989 |
| 4779415 | Manifold tuning structure An exhaust manifold for attachment to an engine having a plurality of exhaust ports is provided. The exhaust manifold includes an exhaust conduit that is in fluid communication with selected exhaust ports, with the exhaust conduit being formed to include ... | 10/25/1988 |
| 4779703 | Silencing device for internal combustion engine A silencing device for an internal combustion engine includes an expansion chamber which may be implemented with a prechamber, a muffler or the like installed in an exhaust system of the engine. An exhaust pipe connected to the expansion chamber is provid... | 10/25/1988 |
| 4719988 | Muffler The muffler comprises a main sound arresting chamber formed in the interior of an outer cylinder of the muffler and a bracket fixedly secured to the outer surface of the outer cylinder for mounting the muffler on a body of a motorcycle. The muffler is pro... | 01/19/1988 |
| 4645032 | Compact muffler apparatus and associated methods An axially asymmetric exhaust gas muffler has a perforated central exhaust duct that is circumscribed by a duality of reactive sound attenuating chambers in each of which is positioned a resonant sound attenuator.... | 02/24/1987 |
| 4616732 | Silencing system for exhaust gases from internal combustion engines A silencing system for exhaust gases from internal combustion engines, comprising an intermediate silencing device for connection to the exhaust manifold of an internal combustion engine, and a final silencing device series connected to the intermediate s... | 10/14/1986 |
| 4607723 | Exhaust system for outboard motors Two embodiments of outboard motors incorporating improved silencing systems for the exhaust gases of the powering engine. In each embodiment, a Helmholtz resonator is provided by a resonance chamber formed at least in part by a spacer plate that is interp... | 08/26/1986 |
| 4580657 | Integral fluted tube for sound suppression and exhaust ejection An integral formed fluted tube intended, for example, for use as a sound suppression device in mufflers, exhaust ejectors, etc. is disclosed. The tube is formed of a cylindrical portion with generally circular inlets and outlets and a constricted portion ... | 04/08/1986 |
| 4579195 | Exhaust gas silencer The silencer device set forth herein in its various embodiments consists of at least one channelling bounded by at least one turn of a flat spiral, or of a cylindrical helix, or of a tapered helix, which may be blanked-off or open at one of its ends or at... | 04/01/1986 |
| 4540064 | Noise and vibration reducing apparatus for use in exhaust system of engine A flexible means is interposed between a first exhaust conduit fixed to the power unit of an automobile and a second conduit elastically supported by the automobile body, and conveys the exhaust gases of the power unit from the first exhaust conduit to th... | 09/10/1985 |
| 4501341 | Low frequency muffler A muffler comprises two Helmholtz resonators, one tuned for high frequency and the other for low frequency. There is a resonance of the high frequency resonator volume's compliance and the effective tail pipe gas inertance which produces an undesirable lo... | 02/26/1985 |
| 4487290 | Light aircraft engine muffler A relatively small, lightweight muffler is provided, especially adapted to low horsepower aircraft and comprises an elongated, essentially cylindrical structure made up of inner and outer casings having sound-absorbent-material-containing chambers and pre... | 12/11/1984 |
| 4484659 | Device for modulating the flow of the gases in an internal combustion engine exhaust muffler The muffler comprises a resonator (6) which communicates by way of an outlet orifice (14) with a chamber (5). A flexible valve member (16) regulates the section of the passage through this orifice in accordance with the rate of flow of the gas through the... | 11/27/1984 |
| 4416350 | Muffler The expansion chamber shell into which the gas from a noise source, such as an internal combustion engine, is rushed is held in an outer shell in a manner to define therebetween a clearance which acts as a sound damping means against the gas passing throu... | 11/22/1983 |
| 4415059 | Muffler An inner shell having aligned first and second expansion chambers is spacedly disposed in an outer shell in a manner to define therebetween four isolated chambers upstreamly positioned two of which surround the first expansion chamber and downstreamly pos... | 11/15/1983 |
| 4371054 | Flow duct sound attenuator An acoustical silencer for a gas passage or exhaust duct for a gas turbine engine, which is composed of three parts. The first comprises an absorptive surface to absorb incident low frequency sound the second comprises an acoustically lined duct attenuati... | 02/01/1983 |
| 4368799 | Straight-through flow muffler A straight-through flow muffler (10) is shown. A cylindrical housing (11) has an inlet (13a), an outlet (14a), and a pair of axially aligned, longitudinally spaced tubes (15, 16) extending from the inlet and outlet into the center of the muffler housing. ... | 01/18/1983 |
| 4360075 | Low back pressure exhaust silencer for diesel locomotives An exhaust silencer especially for turbo-charged diesel locomotives with a single exhaust outlet combines a straight through exhaust duct preferably diverging to recover velocity pressure and minimize back pressure with dual silencing means including a la... | 11/23/1982 |
| 4359135 | Muffler assembly A muffler comprising a housing (12) having end caps (16, 18) and partitions (32, 38, 42) which divide it into first and second expansion chambers (40, 44), a flow chamber (36), and a resonator chamber (34). An inlet tube (20) passes through end cap (16) a... | 11/16/1982 |
| 4312422 | Exhaust silencer for outboard engine with a reflection chamber An exhaust silencer for an outboard engine including an expansion chamber for reducing the exhaust noise. A reflection chamber having an open end and a closed end is placed with its open end communicating with the expansion chamber at a location which is ... | 01/26/1982 |
| 4294330 | Mufflers for percussive pneumatic machines A muffler for use with machines such as pneumatic drills consists of an elastomeric housing divided into an admission chamber and a series of muffler chambers. Within the housing are an inlet conduit communicating with the admission chamber and each muffl... | 10/13/1981 |
| 4267899 | Muffler assembly A muffler (10) for reducing the noise level of gases passing therethrough is disclosed. The muffler (10) includes a housing (12) including a longitudinally extending wall (14) and a pair of opposite end walls (16, 18). Baffle plates (32, 38, 42) divide th... | 05/19/1981 |
| 4263981 | Vacuum pump exhaust muffler A muffler for use in conjunction with a high intensity, low frequency noise-propagating open pipeline is disclosed. The muffler features an acoustically lined expansion chamber in tandem with a reasonator chamber. The length of the expansion chamber is ap... | 04/28/1981 |
| 4212370 | Sound absorber for an intermittently discharged gaseous working medium A sound absorber for intermittent exhaust gas, particularly for use in connection with a compressed air operated motor employed, for example, in a hand grinder. The sound absorber is arranged predominantly in the housing of the motor and includes an exhau... | 07/15/1980 |
| 4203503 | Exhaust silencer for a railway locomotive An exhaust silencer for a railway locomotive with a supercharged, six-cylinder diesel engine developing a power of about 200-250 HP has a cylindrical body closed at each end by an end wall and subdivided into three resonance chambers and three gas expansi... | 05/20/1980 |
| 4192401 | Complete louver flow muffler A muffler for reducing the audible noise level of exhaust gases emitted by combustion engines has an inlet tube with a patch of louvers or perforations and is arranged so that all or substantially all the gas flowing through the muffler is forced through ... | 03/11/1980 |
| 4185715 | Sound-attenuating muffler for exhaust gases A sound-attenuating muffler for reducing the acoustic energy in an exhaust gas stream has an elongated cylindrical housing with a small ratio of diameter to length. Axially extending vanes are radially disposed to define an added number of flow passages. ... | 01/29/1980 |
| 4177875 | Muffler for internal combustion engine A muffler for an internal combustion engine includes a cylindrical casing having end plates closing the interior thereof. At least one baffle extending perpendicularly to the central axis of the casing is provided for dividing the interior of the casing i... | 12/11/1979 |
| 4164266 | Exhaust gas muffler For dampening exhaust gas noise a muffler contains two portions, of which one is adapted to take care of high frequency noise and includes dampening material, and the other is adapted to take care of low frequency noise and is devoid of such material. The... | 08/14/1979 |
| 4124091 | Silencer for an internal combustion engine A silencer which may be arranged in place in an exhaust system of an internal combustion engine includes walls forming the main body of the silencer; a first separator supported by the walls to define a rear chamber therebetween; a second separator suppor... | 11/07/1978 |
| 4111279 | Louver flow muffler A muffler for lowering the exhaust gas noise level of combustion engines has a Helmholtz resonator chamber and a single straight tube member that is provided with a perforated portion outside said chamber large enough for full flow through it of all gas f... | 09/05/1978 |
| 4079810 | Muffler A muffler which does not require a low-frequency Helmholtz resonator includes an outer shell and first and second heads for closing the inlet and outlet ends, respectively, of the shell. First, second and third baffles are disposed internally of the shell... | 03/21/1978 |
| 4038820 | Two-cycle engine wave interference muffler means Exhaust means for internal combustion engines which comprises an exhaust pipe having one end connected with exhaust port of the engine, said exhaust pipe having an enlarged expansion chamber adjacent to the other end thereof, said exhaust pipe being close... | 08/02/1977 |
