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| Number | Title | Issue Date |
| 6969052 | Air aspirator-mixer A single port venturi device is provided for aeration of wastewaters containing suspended solids. The device has a non-obstructive design which prevents attachment or accumulation of suspended solids, and promotes even air distribution for efficient aspiration of ai... | 11/29/2005 |
| 6220271 | Checkvalve unit A checkvalve (1) is provided with an inlet which can be connected to an operating system requiring a negative pressure, e.g. to a braking force amplifier (17), an outlet (3) which can be connected to a negative-pressure system producing a negative pressur... | 04/24/2001 |
| 6035881 | Checkvalve unit A checkvalve (1) is provided with an inlet which can be connected to an operating system requiring a negative pressure, e.g. to a braking force amplifier (17), an outlet (3) which can be connected to a negative-pressure system producing a negative pressur... | 03/14/2000 |
| 5611204 | EGR and blow-by flow system for highly turbocharged diesel engines A gas flow network in combination with a highly turbocharged diesel engine for the blending of either EGR gas or blow-by gas from the crankcase vent with fresh charge air is disclosed. In the diesel engine assembly which incorporates the flow network for ... | 03/18/1997 |
| 5291916 | Check valve A check valve which is positioned in the vacuum air line of an internal combustion engine. The check valve includes a single-piece valve body having an outlet port and two or more inlet ports, with one outlet port located substantially in line with the in... | 03/08/1994 |
| 5108266 | Check valve with aspirating function This invention relates to a check valve having a first port connected to a chamber, a second port connected to a source of vacuum having a first fluid pressure and a third port connected to a second fluid pressure. A wall which separates the second port f... | 04/28/1992 |
| 4905633 | Air cooling mechanism for internal center of internal combustion engine An air cooling mechanism for an internal combustion engine which has cooling jackets for cooling the internal center of the engine with air, an atmospheric air inlet to the cooling jackets and an air suction unit in the exhaust system for drawing air into... | 03/06/1990 |
| 4817889 | Foolproof simplified vacuum systems Vacuum systems for use aboard aircraft and other vehicles, wherein, by simplified design, the systems of this new invention are virtually foolproof. This new invention utilizes the age old venturi due to its simplicity and lack of moving parts, but due to... | 04/04/1989 |
| 4679395 | Cleaning means for vehicle exhausting pipe A device which comprises an intake for extraneous air to which can be admixed the waste gas emanating from exhausting pipe in an accelerating cylinder to provide additional energy to drive a vehicle, to provide a noise-muffler function, and to dilute the ... | 07/14/1987 |
| 4454753 | Diffuser/ejector system for a very high vacuum environment A system for testing space engines at sea level under a very low pressure environment. The system includes a space simulation chamber connected to a diffuser which has two variable area ratio ejectors connected to it in tandem. Each of the ejectors is dri... | 06/19/1984 |
| 4430858 | Electrical generating system An electrical generating system including a tubular chamber for confining an upstanding column of liquid, and a combustion chamber disposed within the tubular chamber wherein products of combustion are directed into the upstanding column of liquid for hea... | 02/14/1984 |
| 4227651 | Nozzle for use on the exhaust of internal combustion engines A nozzle for use on the exhaust of an internal combustion engine having converging and diverging conical sections designed to improve combustion efficiency by accelerating the expulsion of exhaust gases.... | 10/14/1980 |
| 4211200 | Vacuum force amplifier for internal combustion engine The air intake of an internal-combustion engine passes through a throttle whose upstream and downstream sides are shunted by an idle-speed circuit. A vacuum-actuated auxiliary device has a vacuum line connected to the downstream side of the throttle. An i... | 07/08/1980 |
