Quotables
"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
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 |
| 6170528 | Assembly of orifice chambers progressively reducing operating pressure for large gas flows Disclosed is an improved assembly of orifice chambers for reducing pressure of large gas flows effective to reduce noise of the gas flows and wear on orifice chambers by progressive pressure drops in the gas flows through successive orifice plates which a... | 01/09/2001 |
| 6116377 | Sound attenuation devices for internal combustion engines A sound attenuation device for internal combustion engines includes a tubular core extending from an inlet end to an outlet end and having apertures formed therethrough to allow fluid communication between the interior and the exterior of the tubular core... | 09/12/2000 |
| 5979583 | Muffler for motorcycle A muffler is connected to a pair of exhaust pipes extending from each cylinder of a multi-cylinder engine. The muffler assures easier assembling work and provides independent exhaust sound for each cylinder. The muffler includes a forward and a rearward e... | 11/09/1999 |
| 5831223 | Self-tuning exhaust muffler An exhaust muffler for a motor vehicle includes a louver tube having an intake end and an exhaust end. An outer tube, consisting of a frustoconical portion and a cylindrical portion, is concentrically arranged around the louver tube. A plurality of louver... | 11/03/1998 |
| 5502283 | Muffler A muffler including an offshoot path, one end of which is connected to a middle of a ventilation path so as to diverge from the ventilation path, and another end of which is closed. One portion of the offshoot path and another portion thereof are communic... | 03/26/1996 |
| 5248859 | Collector/muffler/catalytic converter exhaust systems for evacuating internal combustion engine cylinders An exhaust collector for use with an internal combustion engine of the type having a plurality of generally nested exhaust tubes for individually receiving exhaust gases from separate associated engine exhaust ports. The collector is frustoconically shape... | 09/28/1993 |
| 5198625 | Exhaust muffler for internal combustion engines A new and improved muffler for use particularly with internal combustion engines which utilizes a tube assembly composed of a plurality of laterally nested tubes in direct supporting lateral engagement with each other providing direct communication thereb... | 03/30/1993 |
| 4841728 | Straight through type muffler for generating the exhaust flow from an internal combustion engine A straight through type muffler for generating an exhaust flow from an internal combustion engine includes a closed expansion chamber in communication with the straight through passage of the muffler. A minority of the gases passing through the straight t... | 06/27/1989 |
| 4792014 | Tail pipe for drafting engine exhaust gas A tail pipe for drafting an engine exhaust gas includes: a front perforated pipe connected to an engine exhaust silencer or muffler, an outer pipe jacketed outside the front pipe for leading environmental air therein, a central pipe connected on a rear en... | 12/20/1988 |
| 4712644 | Exhaust silencer for internal combustion engines An exhaust silencer for internal combustion engines, particularly as used on motor vehicles including tractors. A front pipe, a plurality of core tubes and a tail pipe have successive inner flow channels of equal section areas. The plurality of core tubes... | 12/15/1987 |
| 4685534 | Method and apparatus for control of fluids A basic new method and devices for treating flowing substances such as subdivided solids, colloids, gels, liquids and gases, under varying temperatures, pressure and velocity conditions is disclosed. The method is characterized by forming three concentric... | 08/11/1987 |
| 4392549 | Boiler noise suppressor A boiler noise suppressor has one truss (2) mounted on a cover of an inlet flange (1), a perforated expansion nozzle (5), a pipe system (7) made of a several hundreds of pipes, a perforated outlet nozzle (8), at least one truss (11) mounted on a collar of... | 07/12/1983 |
| 4378859 | Silencer for intake/exhaust gas duct The disclosed silencer has noise-absorbing partitions disposed in a gas duct in parallel with but with a spacing from outer walls of the duct, so as to define gas passage means and noise-absorbing space means in the duct. The noise-absorbing space means i... | 04/05/1983 |
| 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 |
| 4350010 | Exhaust system for an outboard engine An outboard engine has a casing, an internal combustion engine with a water cooling circuit and an exhaust pipe. The exhaust pipe discharges exhaust gases into an expansion chamber, and gases from the expansion chamber are discharged into the body of wate... | 09/21/1982 |
| 4222456 | Sound-suppressing and back pressure-reducing apparatus and method This invention is directed to an apparatus and method for treating a flowing gas so as to decrease the back pressure of the flowing gas and the noise of the flowing gas.... | 09/16/1980 |
| 4130173 | Apparatus and method for reducing flow disturbances in a flowing stream of compressible fluid Disclosed are methods and apparatus for reducing acoustic noise generated by high pressure ratio throttling of compressible fluids. High pressure gas is passed through a plurality of chokes, each adapted to cause an incremental pressure reduction and prod... | 12/19/1978 |
