Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7282185 | Emission control apparatus Apparatus for controlling emissions from an internal combustion engine including an enclosed housing one end of which is provided with an inlet and the other end an outlet. A coaxial tubular member extends from the inlet into the housing. A catalytic cell surrounds ... | 10/16/2007 |
| 6749397 | Fluidal machine In a fluidal machine with an impeller rotating to urge a fluid radially outwardly by a centrifugal force, a vane guiding the fluid discharged from the impeller, a vane member which includes a front end of the vane facing to the impeller so that the fluid discharged ... | 06/15/2004 |
| 6591939 | Marine engine silencer A silencer is disclosed that reduces the acoustic energy of a fluid mixture of a liquid coolant and of exhaust gas from an engine. The engine may be a marine engine. The silencer according to this aspect includes a receiving chamber that receives the flui... | 07/15/2003 |
| 6564901 | Muffler for marine engine A marine engine muffler is provided having a silencing element with an inclined surface defining an array of elongate slotted apertures generally disposed in circumferential alignment. The slotted apertures are preferably defined by angled sidewalls such ... | 05/20/2003 |
| 6273772 | Apparatus and method for multi-conduit waterlift engine silencing A waterlift silencer and method for reducing the acoustic energy of a fluid mixture of engine exhaust gas and a liquid coolant and limiting back pressure exerted by the silencer on an engine, particularly as applied to engines located below the waterline ... | 08/14/2001 |
| 6224440 | Watercraft exhaust system Embodiments of personal watercraft that incorporate improved exhaust silencing systems. The silencing systems include an exhaust silencer that silences higher frequency sounds that are difficult to silence with expansion chambers. The silencer is position... | 05/01/2001 |
| 6152258 | Exhaust system with silencing and water separation capability An exhaust system is provided with a structure that separates water from an exhaust stream and also attenuates the noise of the exhaust system. Water laden exhaust is directed from an inlet conduit through a perforated surface to precipitate water from th... | 11/28/2000 |
| 6024617 | Marine engine silencing apparatus and method An apparatus and method for silencing marine engines. In one embodiment, a separation chamber receives a fluid mixture of exhaust gas and liquid coolant and a dynamic separation member separates the exhaust gas from the liquid coolant. In one aspect of th... | 02/15/2000 |
| 5824970 | Marine engine silencer having internal apertured baffle and weir plate A silencer is provided for a marine diesel engine. The silencer comprises a conical silencer element (20) located within an exhaust duct (10), the silencer element having apertured surfaces which are inclined to the flow of exhaust gases in the duct.... | 10/20/1998 |
| 5746630 | Combination wet marine exhaust muffler and water separator A combined wet marine exhaust muffler and water separator comprises a housing having a tangential inlet for inducing the exhaust flow to rotate about a lengthwise axis of the housing, a first outlet positioned along the axis for conducting dried exhaust g... | 05/05/1998 |
| 5633481 | Exhaust pipe construction An exhaust pipe construction for a motor vehicle includes a connecting device, a discharge device, and a filter disposed between the connecting device and the discharge device. The connecting device is a tee tube having a first port connected to an exhaus... | 05/27/1997 |
| 5554058 | Marine engine exhaust system and associated method A marine engine exhaust system (10) and method for use with a marine engine. The exhaust system (10) includes a muffler body (20) defining an internal cavity (22) for receiving exhaust gases from a marine engine (12), the cavity (22) defining a reservoir ... | 09/10/1996 |
| 5259797 | Marine engine exhaust system and method A marine engine exhaust system and method utilizes first and second enclosed, generally tubular chambers having generally parallel lengthwise dimensions and internal intermediate exhaust passageways spaced along the lengthwise dimension of the second cham... | 11/09/1993 |
| 5147232 | Marine engine exhaust system and method A marine engine exhaust system and method utilizes first and second enclosed, generally tubular chambers having generally parallel lengthwise dimensions and internal intermediate exhaust passageways spaced along the lengthwise dimension of the second cham... | 09/15/1992 |
| 4977977 | Marine engine external exhaust noise suppressor with swim platform Sound muffling devices for marine engines for installation on the external portion of the transom of a marine vessel are attached in such a manner that any breakdown within the silencer causes no discharge of exhaust gases or cooling fluids into the inter... | 12/18/1990 |
| 4952182 | Noise attenuating exhaust relief system for an outboard motor An exhaust relief system for an outboard motor includes an exhaust chamber into which exhaust is discharged from the engine. A first passage in communication with the exhaust chamber provides contraction of the exhaust as the exhaust passes rearwardly, fr... | 08/28/1990 |
| 4917640 | Marine engine exhaust system and method A marine engine exhaust system and method utilizes first and second enclosed, generally tubular chambers having generally parallel lengthwise dimensions and internal intermediate exhaust passageways spaced along the lengthwise dimension of the second cham... | 04/17/1990 |
| 4865154 | Muffler with drain holes A flat, box-like muffler formed of metal upper and lower housing sections and internal gas passage defining plates has drainage holes to allow liquid that collects on the top of the muffler or on the bottom of the lower section inside the housing to drain... | 09/12/1989 |
| 4779704 | Draining device for muffler of small planing boat A draining device for a muffler of a small planing boat in which engine cooling water is injected into the muffler. A draining hole is opened in the muffler, and to aforesaid draining hole is connected one end of a bypass hose with the other end opened to... | 10/25/1988 |
| 4737886 | Method and apparatus for electrically altering properties of a colloidal suspension containing elongated fibrous particles An apparatus and method for changing the optical and/or physical properties of a fluid composition employ an electric field applied across the fluid for controlling the fluid properties. The fluid consists of a dielectric liquid and an electrically conduc... | 04/12/1988 |
| 4643272 | Marine muffler for water-cooled internal combustion engines An exhaust gas silencing assembly or unit of the wet-type receives the exhaust gases from a water cooled internal combustion engine used to power a water-going vehicle, such as a speed boat, and the coolant water from the water jacket of the engine. The e... | 02/17/1987 |
| 4428453 | Exhaust silences for internal combustion engines A silencer comprises a chamber with internal baffles mounted on a rod so that they can be manually reciprocated to scrape deposits off the chamber wall. A head at an end of the rod protruding from the chamber is screwable to a chamber end wall to hold the... | 01/31/1984 |
| 4393956 | Draining device used in a car-muffler A draining device used in a car muffler includes a muffler body separated into three compartments A, B and C with water passing holes disposed to their bottoms, an inlet pipe communicated to the compartment B, two intermediary pipes used to communicate th... | 07/19/1983 |
| 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 |
| 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 |
