Bizarre Patents
Behavior Modification Wristwatch
A wristwatch including a watch band and a watch body having an octagon shaped perimeter and being red in color and having the word STOP thereon to resemble a stop sign.
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| Number | Title | Issue Date |
| 4360076 | Muffler A muffler of the expansion type comprises an inlet pipe and an outlet pipe connected with each other through a main body. Minimization of pressure pulsation is achieved by a variety of means including appropriately-located apertures in those portions of t... | 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 |
| 4346783 | Apparatus for treating flowing working gases particularly to reduce the noise in operation thereof A device for treating flowing working gases in order to reduce their operational noises and in most instances also to increase their operating efficiency comprises a flowing working gas operating device which has a discharge conduit with at least one disc... | 08/31/1982 |
| 4341284 | Silencer means for internal combustion engines A silencer means particularly suited to two-cycle internal combustion engines includes an exhaust inlet pipe to receive exhaust from the exhaust ports of an engine, communicating with a diverging conical section which is followed by an exhaust chamber. An... | 07/27/1982 |
| 4341283 | Sound suppression system A sound suppression system having a sound suppression chamber formed from a longitudinally extending tubular housing. One end of the tubular housing is closed by an end plug which has a bore through which passes one end of a tubular member. The tubular me... | 07/27/1982 |
| 4334703 | Tube-to-plate connection A tube-to-plate connection and method for making it utilize a plate defining an aperture where the tube is to be attached to the plate, with the portion of the plate surrounding the aperture including a flange extending away from the plane of the plate. T... | 06/15/1982 |
| 4332220 | Power tool, especially power saw A power tool, especially power saw, having a two-stroke internal combustion engine, that is provided with a substantially horizontally arranged cylinder, a cooling air blower, with guide surfaces directed towards the belonging therewith and arranged on on... | 06/01/1982 |
| 4332307 | Exhaust muffler An exhaust muffler for an internal combustion engine. The muffler has a pair of half-shells which are held together to form a muffler chamber. The half-shell structure is internally lined with sound absorbing material. The chamber inside this material is ... | 06/01/1982 |
| 4331213 | Automobile exhaust control system An exhaust gas control system has a guiding pipe with a proximal inlet end for connecting to a distal end of an engine exhaust pipe. An expanding portion of the guiding pipe has a central rearward expanding cone and spiralling blades extending between the... | 05/25/1982 |
| 4330239 | Compressor muffler A muffler for a refrigeration gas compressor which is tuned such that the attenuation curve and the impedance curve cross the frequency axis at the pumping frequency of the compressor so as to result in optimum sound attenuation for the higher frequencies... | 05/18/1982 |
| 4315559 | Muffler for internal combustion engine A muffler for internal combustion engines and comprising a housing having an inlet passageway for admitting exhaust gases into the interior of the housing and an outlet passageway for discharging the exhaust gases from the housing, the interior of the hou... | 02/16/1982 |
| 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 |
| 4310067 | Optimized diesel engine exhaust silencer An exhaust silencer system for piston type internal combustion engines hag a wet-exhaust, having a muffler and a muffler bypass which contains water at slow and moderate engine speeds, the water being expelled by the exhaust gas pressure at high engine s... | 01/12/1982 |
| 4305477 | Exhaust tuning means for internal combustion engines A tuning chamber means particularly suited to two-cycle internal combustion engines includes an exhaust inlet pipe to receive exhaust from the exhaust ports of an engine, communicating with a diverging conical section which is followed by an exhaust chamb... | 12/15/1981 |
| 4296832 | Exhaust muffler An exhaust muffler comprising an outer body having open ends which are enclosed by heads. An exhaust gas inlet tube is mounted in an opening in one head, while an outlet tube is mounted in an opening in the opposite end. The adjacent ends of the inlet and... | 10/27/1981 |
| 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 |
| 4286689 | Exhaust gas muffler The invention relates to a muffler, which is suitable for large-scale production and which at a maintained or reduced sound level reduces the pressure drop of the exhaust gases as compared to known mufflers. The muffler comprises an insert of sheet metal ... | 09/01/1981 |
| 4284162 | Exhaust system of automotive vehicle An exhaust system of an automotive vehicle, comprises a muffler having a front end face to which an exhaust pipe is connected, and a tail pipe connected at its one end to the front end face of the muffler, the other end of the tail pipe being opened rearw... | 08/18/1981 |
| 4281742 | Silencer for exhaust gases This invention relates to a silencer for muffling the flow of exhaust gases from an engine before they enter the atmosphere. This silencer comprises a tubular housing having an absorption section with an inlet and an outlet opening. The absorption section... | 08/04/1981 |
| 4278147 | Muffler for engine, particularly motorcycle engine A muffler for a motorcycle engine including a hollow, frustoconical muffler body, a hollow sound-absorbing member snugly fitted in the muffler body and maintained in intimate contact with the inner surface thereof, and a keep member for securing the sound... | 07/14/1981 |
| 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 |
| 4253542 | Exhaust silencer for earth moving machines An exhaust silencer for an earth moving machine having an engine of about 10 liters capacity and a maximum power of about 150-160 HP has a cylindrical wall closed at opposite ends by first and second end walls and subdivided into two internal chambers by ... | 03/03/1981 |
| 4241805 | High pressure gas vent noise control apparatus and method An apparatus and method is provided for venting high pressure gas to a lower pressure region with a minimum of noise. A high pressure vent valve controls egress from a high pressure gas source. In order to limit the generation of noise downstream of the v... | 12/30/1980 |
| 4235304 | Muffler A muffler comprising: a cylindrical body closed at opposite ends with end members; an exhaust gas in-flow tube penetrating and secured to one of the end members; an exhaust gas out-flow tube penetrating and secured to the other end member; and at least on... | 11/25/1980 |
| 4234054 | Multi-duct muffler This invention is a new and improved muffler for use on the exhaust of noise producing machines such as automotive engines, and the like. It is particularly characterized by utilization of a single inlet into a chamber from which there are a multiplicity ... | 11/18/1980 |
| 4227591 | Muffler for air-powered nailers and the like The present invention relates to a novel outlet air muffler for air-powered transportable driving tools such as nailers. The muffler includes an outlet air duct formed in a housing endpiece and the top lid of the nailer. The outlet air duct is made up of ... | 10/14/1980 |
| 4220219 | Lightweight muffler and method for muffling noise A lightweight muffler and method for muffling a noise component of a stream of gases is disclosed. The muffler includes a chamber in which gases are directed side-by-side streams flowing in opposite directions. The streams are in contact with each other f... | 09/02/1980 |
| 4219100 | Muffler for exhaust air or other gas Exhaust air from an air tool or other air actuated device is directed into an air expansion chamber separated by slots from a second chamber containing a predetermined volume of small unconnected particles, such as small pellets of reground plastic scrap ... | 08/26/1980 |
| 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 |
| 4209076 | Exhaust silencer for an agricultural tractor An exhaust silencer for an agricultural tractor having a diesel engine with a cylinder capacity 2.5 to 4 liters and developing a power of 50 to 75 HP has a cylindrical body of elliptical cross-section which is closed at each end by an end-wall and is subd... | 06/24/1980 |
| 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 |
| 4203502 | Muffler A muffler for an internal combustion engine utilized on a motorcycle or the like. The muffler provides the necessary silencing action while being defined to be light in weight, small and pleasing in appearance. The exhaust gases are subdivided into a plur... | 05/20/1980 |
| 4192402 | Muffler for internal combustion engines A muffler having a sealed diffusion chamber provided at its front end with an inlet port of a cross section smaller than that of the diffusion chamber. Within the diffusion chamber there is an outlet pipe having a closed front end disposed a fixed distanc... | 03/11/1980 |
| 4192403 | Muffler for internal combustion engines A muffler for internal combustion engines having the interior of an expansion chamber sectioned by a porous plate through which an exhaust inlet pipe is extended. The inlet pipe is closed at its down-stream end and is provided with many perforations in th... | 03/11/1980 |
| 4192404 | Muffler for internal combustion engines An expansion-type muffler for internal combustion engines, interposed in an exhaust system, and provided with a chamber with a substantial volume. The chamber communicates with the up-stream and down-stream sides of the exhaust system. A plate member is c... | 03/11/1980 |
| 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 |
| 4186819 | Exhaust system for a two-stroke engine A hollow, generally conical member is provided in a cylindrical portion of a muffler shell and has a surface cooperating with the shell to compress oncoming exhaust gases, the surface being of a special curved configuration calculated for reflecting impin... | 02/05/1980 |
| 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 |
| 4172508 | Exhaust silencers An exhaust silencer comprising a primary exhaust gas expansion chamber, a secondary exhaust gas expansion chamber having a greater volume than said primary expansion chamber, an acoustically tuned length of exhaust pipe leading from the primary expansion ... | 10/30/1979 |
