公开(公告)号：US20050022579A1

公开(公告)日：2005-02-03

申请号：US10868004

申请日：2004-06-16

申请人： Kevin Tetreault ,  John Derikx

发明人： Kevin Tetreault ,  John Derikx

IPC分类号： F02M25/08 ,  G01L27/00

CPC分类号： F02M25/0836 ,  F02M25/0809 ,  Y10T137/86083

摘要： A vacuum generating device and method include a member that defines a passage, a first valve, a second valve, a fluid communication conduit, a transducer, and a processor. The passage extends between a first end and a second end, and includes a constriction that defines an orifice. The first valve connects the first end of the member and an ambient environment, and is electrically positionable in first and second configurations. The first configuration permits generally unrestricted fluid flow between the orifice and the ambient enviromnent, and the second configuration substantially prevents fluid flow between the orifice and the ambient environment. The second valve has a first port and a second port. The first port is adapted for fluid communication with a pressure source at a first pressure level. The second valve is electronically adjustable. The fluid communication conduit connects the second end of the member and the second port of the second valve. The fluid communication conduit includes a fluid communication tap at a second pressure level. The transducer is in fluid communication with the fluid communication tap. The transducer senses the second pressure level and outputs a first electric signal. And the processor is in electrical communication with the second valve and with the transducer. The processor receives the first electric signal from the transducer and outputs a second electric signal to the second electric actuator. The second valve varies fluid flow through the orifice in response to the second electric signal.

摘要翻译： 真空发生装置和方法包括限定通道的构件，第一阀，第二阀，流体连通导管，换能器和处理器。 通道在第一端和第二端之间延伸，并且包括限定孔的收缩部。 第一阀连接构件的第一端和周围环境，并且可以在第一和第二构造中电可定位。 第一配置通常允许在孔口和周围环境之间不受限制的流体流动，并且第二构造基本上防止流体在孔口和周围环境之间流动。 第二阀具有第一端口和第二端口。 第一端口适于在第一压力水平下与压力源流体连通。 第二个阀是电子可调节的。 流体连通管道连接构件的第二端和第二阀的第二端口。 流体连通管道包括处于第二压力水平的流体连通水龙头。 换能器与流体连通水龙头流体连通。 换能器检测第二压力水平并输出第一电信号。 并且处理器与第二阀和换能器电连通。 处理器从换能器接收第一电信号并向第二电致动器输出第二电信号。 响应于第二电信号，第二阀改变通过孔口的流体流动。

公开(公告)号：US06830068B2

公开(公告)日：2004-12-14

申请号：US10232530

申请日：2002-09-03

申请人： Kevin Tetreault ,  John Derikx

发明人： Kevin Tetreault ,  John Derikx

IPC分类号： G01L2700

CPC分类号： G01L27/00 ,  Y10T137/86083

摘要： A vacuum generating device and method include a member defining a passage, a first valve, a second valve, and a fluid communication conduit. The passage extends between a first end and a second end, and includes a constriction defining an orifice. The first valve connects the first end of the member and an ambient environment. The first valve is adjustable between first and second configurations. The first configuration permits generally unrestricted fluid flow between the orifice and the ambient environment. The second configuration substantially prevents fluid flow between the orifice and the ambient environment. The second valve has a first port and a second port. The first port is adapted for fluid communication with a pressure source at a first pressure level. The fluid communication conduit connects the second end of the member and the second port of the second valve. The fluid communication conduit includes a fluid communication tap at a second pressure level. The second pressure level is responsive to fluid flow through the orifice.

摘要翻译： 真空发生装置和方法包括限定通道的构件，第一阀，第二阀和流体连通导管。 通道在第一端和第二端之间延伸，并且包括限定孔口的收缩部。 第一个阀连接构件的第一端和周围环境。 第一阀可在第一和第二配置之间调节。 第一种配置通常允许在孔口和周围环境之间不受限制的流体流动。 第二配置基本上防止了孔与周围环境之间的流体流动。 第二阀具有第一端口和第二端口。 第一端口适于在第一压力水平下与压力源流体连通。 流体连通管道连接构件的第二端和第二阀的第二端口。 流体连通管道包括处于第二压力水平的流体连通水龙头。 第二压力水平响应于通过孔口的流体流动。

公开(公告)号：US07086271B2

公开(公告)日：2006-08-08

申请号：US10868007

申请日：2004-06-16

申请人： Kevin Tetreault ,  John Derikx

发明人： Kevin Tetreault ,  John Derikx

IPC分类号： G01L27/00

CPC分类号： F02M25/0809 ,  F02M25/0836 ,  Y10T137/86083

摘要： A test device and method for drawing a vacuum relative to an ambient environment. The device includes a member defining a passage, a valve, and a fluid communication conduit. The passage extends between a first end and a second end, and includes a constriction defining an orifice. The first end is in fluid communication with an ambient environment. The valve has a first port and a second port. The first port is adapted for fluid communication with a pressure source at a first pressure level. The fluid communication conduit includes a fluid communication tap at a second pressure level. The second pressure level is responsive to fluid flow through the orifice. The fluid communication conduit connects the second end of the member and the second port of the valve.

公开(公告)号：US06938456B2

公开(公告)日：2005-09-06

申请号：US10868004

申请日：2004-06-16

申请人： Kevin Tetreault ,  John Derikx

发明人： Kevin Tetreault ,  John Derikx

IPC分类号： F02M25/08 ,  G01L27/00

CPC分类号： F02M25/0836 ,  F02M25/0809 ,  Y10T137/86083

摘要： A vacuum generating device and method include a member that defines a passage, a first valve, a second valve, a fluid communication conduit, a transducer, and a processor. The passage extends between a first end and a second end, and includes a constriction that defines an orifice. The first valve connects the first end of the member and an ambient environment, and is electrically positionable in first and second configurations. The first configuration permits generally unrestricted fluid flow between the orifice and the ambient environment, and the second configuration substantially prevents fluid flow between the orifice and the ambient environment. The second valve has a first port and a second port. The first port is adapted for fluid communication with a pressure source at a first pressure level. The second valve is electronically adjustable. The fluid communication conduit connects the second end of the member and the second port of the second valve. The fluid communication conduit includes a fluid communication tap at a second pressure level. The transducer is in fluid communication with the fluid communication tap. The transducer senses the second pressure level and outputs a first electric signal. And the processor is in electrical communication with the second valve and with the transducer. The processor receives the first electric signal from the transducer and outputs a second electric signal to the second electric actuator. The second valve varies fluid flow through the orifice in response to the second electric signal.

摘要翻译： 真空发生装置和方法包括限定通道的构件，第一阀，第二阀，流体连通导管，换能器和处理器。 通道在第一端和第二端之间延伸，并且包括限定孔的收缩部。 第一阀连接构件的第一端和周围环境，并且可以在第一和第二构造中电可定位。 第一配置通常允许在孔口和周围环境之间不受限制的流体流动，并且第二构造基本上防止流体在孔口和周围环境之间流动。 第二阀具有第一端口和第二端口。 第一端口适于在第一压力水平下与压力源流体连通。 第二个阀是电子可调节的。 流体连通管道连接构件的第二端和第二阀的第二端口。 流体连通管道包括处于第二压力水平的流体连通水龙头。 换能器与流体连通水龙头流体连通。 换能器检测第二压力水平并输出第一电信号。 并且处理器与第二阀和换能器电连通。 处理器从换能器接收第一电信号并向第二电致动器输出第二电信号。 响应于第二电信号，第二阀改变通过孔口的流体流动。

公开(公告)号：US06779555B2

公开(公告)日：2004-08-24

申请号：US10232529

申请日：2002-09-03

申请人： Kevin Tetreault ,  John Derikx

发明人： Kevin Tetreault ,  John Derikx

IPC分类号： G01L2700

CPC分类号： F02M25/0836 ,  F02M25/0809 ,  Y10T137/86083

摘要： A vacuum generating device and method include a member that defines a passage, a first valve, a second valve, a fluid communication conduit, a transducer, and a processor. The passage extends between a first end and a second end, and includes a constriction that defines an orifice. The first valve connects the first end of the member and an ambient environment, and is electrically positionable in first and second configurations. The first configuration permits generally unrestricted fluid flow between the orifice and the ambient environment, and the second configuration substantially prevents fluid flow between the orifice and the ambient environment. The second valve has a first port and a second port. The first port is adapted for fluid communication with a pressure source at a first pressure level. The second valve is electronically adjustable. The fluid communication conduit connects the second end of the member and the second port of the second valve. The fluid communication conduit includes a fluid communication tap at a second pressure level. The transducer is in fluid communication with the fluid communication tap. The transducer senses the second pressure level and outputs a first electric signal. And the processor is in electrical communication with the second valve and with the transducer. The processor receives the first electric signal from the transducer and outputs a second electric signal to the second electric actuator. The second valve varies fluid flow through the orifice in response to the second electric signal.

摘要翻译： 真空发生装置和方法包括限定通道的构件，第一阀，第二阀，流体连通导管，换能器和处理器。 通道在第一端和第二端之间延伸，并且包括限定孔的收缩部。 第一阀连接构件的第一端和周围环境，并且可以在第一和第二构造中电可定位。 第一配置通常允许在孔口和周围环境之间不受限制的流体流动，并且第二构造基本上防止流体在孔口和周围环境之间流动。 第二阀具有第一端口和第二端口。 第一端口适于在第一压力水平下与压力源流体连通。 第二个阀是电子可调节的。 流体连通管道连接构件的第二端和第二阀的第二端口。 流体连通管道包括处于第二压力水平的流体连通水龙头。 换能器与流体连通水龙头流体连通。 换能器检测第二压力水平并输出第一电信号。 并且处理器与第二阀和换能器电连通。 处理器从换能器接收第一电信号并向第二电致动器输出第二电信号。 响应于第二电信号，第二阀改变通过孔口的流体流动。

公开(公告)号：US06827101B2

公开(公告)日：2004-12-07

申请号：US10232528

申请日：2002-09-03

申请人： Kevin Tetreault ,  John Derikx

发明人： Kevin Tetreault ,  John Derikx

IPC分类号： G01L2700

CPC分类号： F02M25/0809 ,  F02M25/0836 ,  Y10T137/86083

摘要： A test device and method for drawing a vacuum relative to an ambient environment. The device includes a member defining a passage, a valve, and a fluid communication conduit. The passage extends between a first end and a second end, and includes a constriction defining an orifice. The first end is in fluid communication with an ambient environment. The valve has a first port and a second port. The first port is adapted for fluid communication with a pressure source at a first pressure level. The fluid communication conduit includes a fluid communication tap at a second pressure level. The second pressure level is responsive to fluid flow through the orifice. The fluid communication conduit connects the second end of the member and the second port of the valve.

摘要翻译： 用于相对于周围环境绘制真空的测试装置和方法。 该装置包括限定通道，阀和流体连通导管的构件。 通道在第一端和第二端之间延伸，并且包括限定孔口的收缩部。 第一端与环境环境流体连通。 阀具有第一端口和第二端口。 第一端口适于在第一压力水平下与压力源流体连通。 流体连通管道包括处于第二压力水平的流体连通水龙头。 第二压力水平响应于通过孔口的流体流动。 流体连通管道连接构件的第二端和阀的第二端口。