Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7942239 | Exhaust muffler A muffler for reducing the sounds of combustion gases exhausted from an internal combustion engine including an elongated fluid passage extending between an inlet and an outlet such that the outlet is in fluid communication with the inlet. Further, the inlet being c... | 05/17/2011 |
| 7798286 | Exhaust muffler having a horizontally extending sound attenuation chamber A muffler for reducing the sounds of combustion gases exhausted from an internal combustion engine. The muffler including an elongated fluid passage extending between an inlet and an outlet such that the outlet is in fluid communication with the inlet. The inlet of ... | 09/21/2010 |
| 7367424 | Eccentric exhaust muffler for use with auxiliary power units A muffler system is provided for use with an auxiliary power unit. In one embodiment, and by way of example only, the system includes an outer can, an annular baffle, and a tube. The outer can has a sidewall including a forward end, an aft end, and a cavity extendin... | 05/06/2008 |
| 7364013 | Shell main body for muffler The shell main body for a muffler includes an inner shell in a cylindrical shape with a cross-section of an imperfect circle defined by small arc portions alternating with large arc portions; and an outer shell wrapping the inner shell and formed in a cylindrical sh... | 04/29/2008 |
| 7347046 | Layout of catalyst of vehicle An exhaust system for a vehicle includes a muffler including end walls and a side wall connected to the end walls enclosing an interior space of the muffler. A first pipe is disposed within the interior space of the muffler and extends from one end of the muffler at... | 03/25/2008 |
| 7337877 | Variable geometry resonator for acoustic control The present invention provides a resonator for attenuating acoustic vibration from an air intake passage. The resonator includes a neck, a resonator chamber, a piston-type member, and an actuator. The neck is attached between the air passage and the resonator chambe... | 03/04/2008 |
| 7337876 | Suction apparatus with noise reduction means A suction apparatus is provided with noise reduction means in one or more airflow passages for reducing noise emission from an airflow generator or the like, wherein at least one airflow passage is provided with at least one indentation with a predetermined depth ex... | 03/04/2008 |
| 7334663 | Variable resonator A communicating pipe is disposed on an outer periphery of an air intake pipe, and a conduit is formed so as to be parallel to an air intake passage. A plurality of first communicating apertures are disposed through the air intake pipe so as to be arranged in a singl... | 02/26/2008 |
| 7293628 | Shell main body for muffler A cylindrical shell main body constituting a muffler main body is formed of two layers of an inner shell and an outer shell and has a cylindrical shape with a cross section that is not a perfect circle but is defined by alternated small arc portions and large arc po... | 11/13/2007 |
| 7287622 | Exhaust muffler The present specification discloses a muffler for attenuating exhaust noise from an internal combustion engine. The muffler includes a main chamber, an intermediate pipe, a diffuser chamber, a spark arrester, and an exhaust pipe. Exhaust gases from the engine enter ... | 10/30/2007 |
| 7281605 | Mufflers with enhanced acoustic performance at low and moderate frequencies The invention relates to an exhaust silencer or muffler for an internal combustion engine, in particular a silencer with the damping characteristics of a resonator with the absorptive characteristics of a dissipative silencer. The silencer of the present invention p... | 10/16/2007 |
| 7255197 | Muffler A muffler which reduces noises of a wide frequency band with a simple structure. Sound waves of an intake duct enter into and are received in a resonance box via a branch pipe. At the branch pipe, a movable body slidingly abuts a peripheral portion of an opening of ... | 08/14/2007 |
| 7219764 | Exhaust muffler A muffler may comprise a casing having an internal volume, an inlet and an outlet, and a diverter plate dividing the internal volume into a first chamber and a second chamber. The diverter plate may comprise a baffle wall portion and at least one diverter having a d... | 05/22/2007 |
| 7191868 | Combined silencer and spark arrester A silencer for silencing exhaust gases includes an acoustic resonator chamber that serves as a spark arrester to trap burning carbon particles and prevent them passing to the atmosphere. The silencer has an exhaust gas inlet and an exhaust gas outlet. Exhaust gases ... | 03/20/2007 |
| 7188621 | Portable ventilator system A portable ventilator uses a ROOTS-type blower as a compressor to reduce both the size and power consumption of the ventilator. Various functional aspects of the ventilator are delegated to multiple subassemblies having dedicated controllers and software that intera... | 03/13/2007 |
| 7182171 | Muffler with variable acoustic properties A muffler with variable acoustic properties. A pressure cell with a diaphragm, a spring, a piston, a piston rod, a closing element on the piston rod, and a pressure connection line are integrated into a housing. The diaphragm is thermally insulated against the pisto... | 02/27/2007 |
| 7147082 | Suction muffler for a reciprocating hermetic compressor A suction muffler for a reciprocating hermetic compressor, comprising a hollow body (10) provided with a gas inlet and a gas outlet (12, 14), which are respectively in fluid communication with the gas supply to the compressor and with a suction side th... | 12/12/2006 |
| 7117974 | Electronically controlled dual chamber variable resonator An in-line resonator for an air induction system of an internal combustion engine is provided. The system includes a resonator housing, an upstream duct, a downstream duct, a conduit, a partition, and a sleeve. The conduit extends through the resonator housing conne... | 10/10/2006 |
| 7066296 | Valve device for silencer A valve device for a silence opens a bypass passage provided in the silencer to flow exhaust gas through the bypass passage when exhaust gas pressure rises to a certain pressure. The valve device includes a base having a valve opening through which exhaust gas flows... | 06/27/2006 |
| 7063182 | Muffler baffle plate spacer formed from stock material A muffler has a pair of spaced baffle plates that each receive a flow tube. The flow tubes have spaced ends such that an intermediate chamber is defined to receive air flow to be dampened. In existing mufflers, a bracket needed to be formed to the desired length to ... | 06/20/2006 |
| 7032709 | Exhaust-gas muffler An exhaust-gas muffler includes a muffler housing (2) having an inlet opening (3) and an outlet (4). The exhaust-gas muffler is especially for the internal combustion engine in a portable handheld work apparatus. At least one attenuating space (... | 04/25/2006 |
| 7017707 | Herschel-Quincke tube for vehicle applications An HQ tube arrangement suitable for packaging within a vehicle may be designed by creating a mathematical model representing a tube arrangement having a first passageway and a second passageway fluidly connected to the first passageway at first and second junctions.... | 03/28/2006 |
| 6973959 | Heat exchanger for cooling a motor vehicle exhaust gases A heat exchanger for cooling motor vehicle exhaust gases, which heat exchanger is to be fitted into an exhaust line of the vehicle and having at least three tubes in contact by way of their outer walls with cooling air, in which the exhaust gases are brought to circ... | 12/13/2005 |
| 6938728 | Method and apparatus for attaching a resonance chamber to an air induction component An air induction assembly includes a tuning tube that is integrally formed with an air duct having a distal tube end extending into a resonance chamber. The air duct includes a shoulder portion that transitions into a base end of the tuning tube. The shoulder portio... | 09/06/2005 |
| 6742623 | Muffler for internal combustion engine A muffler for an internal combustion engine is disclosed which is capable of effectively enhancing its muffling effect without any substantial increase in size, weight or manufacturing cost. The exhaust gas ejected from an exhaust port of the internal combustion eng... | 06/01/2004 |
| 6510921 | Muffler/exhaust extractor A muffler has an elongated generally cylindrical casing having inlet and outlet ends, an elongated generally frustroconical baffle in the casing adjacent the inlet end with the smaller diameter portion being spaced from the inlet end. The peripheral wall ... | 01/28/2003 |
| 6467570 | Spark arrester with spark filter An exhaust processor includes a housing formed to include an interior region and a partition or first spark arrester that partitions the interior region into chambers and includes a wool filter formed to include an opening. The wool filter is positioned t... | 10/22/2002 |
| 5952625 | Multi-fold side branch muffler A compact muffler has a straight through inner cylindrical casing surrounded by an outer cylindrical casing defining a closed ended sound attenuating chamber therebetween. Within the outer chamber a plurality of axially extending, radially overlying, cyli... | 09/14/1999 |
| 5801344 | Sound attenuator with throat tuner A double throat tuner including a second conduit concentric to a first conduit which connects the gas flow to a first volume tuning chamber having a first effective volume. The radial difference between the first and second conduits and the length of over... | 09/01/1998 |
| 5670756 | Silencer A silencer is comprised of an outer sleeve, an inner sleeve having a number of pores, and sound absorbing material including heat-resistant fibers packed between the outer sleeve and the inner sleeve. The sound absorbing material is wound directly around ... | 09/23/1997 |
| 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 |
| 5196653 | Muffler for air powered turbine drive A muffler for an air powered turbine drive includes a cone section made of perforated metal, a plurality of layers of sintered material on the inner surfaces of the cone section, an inner housing section substantially surrounding the cone section, an inne... | 03/23/1993 |
| 5183976 | Adjustable sound attenuating device An adjustable sound attenuating device comprised of an elongated outer main shell of a predetermined diameter, with an inlet coupling and an outlet coupling. The device has located within the shell singular or multiple independent baffle components compri... | 02/02/1993 |
| 5183977 | Muffler assembly of internal combustion engine A muffler assembly of an internal combustion engine comprises an inner casing in which is defined a first expansion chamber into which is inserted one end of the exhaust pipe having another end connected to an exhaust gas port of the engine, an outer casi... | 02/02/1993 |
| 5168132 | Exhaust gas muffler An exhaust gas muffler comprises a double-walled casing having an inlet end receiving a stream of the exhaust gas and an outlet end for the exhaust gas, the outlet end comprising an outer tube surrounding a perforated inner tube spaced therefrom, and the ... | 12/01/1992 |
| 5162621 | Internal sidebranch resonator A Helmholtz resonator is disposed interiorly of a gas-carrying conduit to attenuate noise passing through the conduit. The Helmholtz resonator encloses a volume that is communicated to the gas flow by a through hole in the wall of the enclosure. The condu... | 11/10/1992 |
| 5145026 | Water faucet silencer apparatus An apparatus is set forth to limit differential pressure during opening of the water faucet, wherein the apparatus includes a housing with a series of spaced parallel diffuser plates mounting a diffuser medium therebetween, wherein the diffuser plates dir... | 09/08/1992 |
| 5025890 | Engine exhaust apparatus An engine exhaust including a silencer which has a cylindrical shell, a front and a rear end plate which are provided to close both ends of the cylindrical shell, and at least three partition walls to divide an inside space of the silencer into a pluralit... | 06/25/1991 |
| 4953660 | Muffler with two part housing and flow tubes An automotive exhaust gas muffler comprises gas passage tubes supported in curved portions of two press-formed metal housing parts and communicate with recesses formed in the housing parts.... | 09/04/1990 |
| 4947957 | Regenerable desiccant cartridge for automotive muffler A regenerable desiccant cartridge for an automotive muffler including a tubular wire mesh sleeve containing adsorbent and having opposite end portions, an elongated metal base plate extending the entire distance of the sleeve and having end portions crimp... | 08/14/1990 |
