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1. 发明申请

US20060081807A1 Sanitary diaphragm valve 失效
公开(公告)号：US20060081807A1
公开(公告)日：2006-04-20
申请号：US11294061
申请日：2005-12-05
申请人： Ronnie Browne , David Kerg
发明人： Ronnie Browne , David Kerg
IPC分类号： F16K7/14
CPC分类号： F16K7/12 , F16K7/16 , F16K31/122 , F16K41/12 , Y10T137/6253
摘要： A sanitary diaphragm valve is provided that includes a generally dome shaped diaphragm having a central boss that can be connected to or driven by a valve actuator. The diaphragm includes an outer peripheral edge and a relatively thin web portion that connects the boss to the outer edge. In one embodiment, the web portion is arcuate or dome shaped. The thinner web portion permits the diaphragm to have an extended cycle life and to permit the valve to operate at higher fluid pressures. The thin web may be defined by two different contoured surfaces, one convex and the other concave, such as formed by two radiuses. A valve body is provided that includes a bowl shaped valve cavity. This valve cavity includes an outer vertical edge to permit more thorough cleaning and to eliminate entrapment areas. The valve assembly provides support surfaces for the diaphragm that reduces stress on the diaphragm particularly at higher operating pressures. A deep bowl embodiment is provided in which the valve cavity is defined by a spherical and preferably a hemispherical surface with the cavity diameter being about the same as the diaphragm diameter. The diaphragm for the deep bowl design has a stem tip that seals one of the valve ports radially outward from the port. The port may include a chamfered valve seat adjacent the port, and the port may be formed by a conical bore.

2. 发明授权

US06672561B2 Piston diaphragm with integral seal 失效
标题翻译：活塞隔膜整体密封
公开(公告)号：US06672561B2
公开(公告)日：2004-01-06
申请号：US10225020
申请日：2002-08-21
申请人： David Kerg , Michael R. Whaley
发明人： David Kerg , Michael R. Whaley
IPC分类号： F16K31122
CPC分类号： F16K41/103
摘要： A radial diaphragm valve includes a diaphragm having an elongated stem that is threadably or otherwise installed on an actuator piston. The elongated stem is slideably received in a bore formed in the actuator housing, and includes a circumferential recess that receives a seal. The seal provides a backup seal function separating the process fluid from the interior region of the actuator.
摘要翻译：径向隔膜阀包括具有细长杆的隔膜，所述细长杆螺纹地或以其他方式安装在致动器活塞上。细长杆可滑动地容纳在形成在致动器壳体中的孔中，并且包括容纳密封件的周向凹部。密封件提供将过程流体与致动器的内部区域分离的备用密封功能。

3. 发明申请

US20050173666A1 Rotary valve actuator 审中-公开
公开(公告)号：US20050173666A1
公开(公告)日：2005-08-11
申请号：US10515859
申请日：2003-05-30
申请人： David Kerg , David Manacapelli
发明人： David Kerg , David Manacapelli
IPC分类号： F16K7/16 , F16K31/50 , F16K31/524 , F16K41/12 , F16K31/44
CPC分类号： F16K7/16 , F16K31/50 , F16K31/52491 , F16K41/12
摘要： A rotary actuator for a valve includes a cam mechanism for transmitting opening force to a movable valve member to move the valve member off a valve seat, against the bias of a closing spring. The cam mechanism does not transmit spring force to the valve member when the valve member is being moved to the closed position or is in the closed position. Also, the parts of the cam mechanism have a large surface area of contact when the valve is in the open position, to minimize unit loading of the cam surfaces. The movable cam is movable axially relative to the actuator handle. The movable valve member is blocked from rotation relative to the valve body. The cam mechanism does not transmit spring force to the movable valve member when the valve member is in the closed position.

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