Invention Grant
- Patent Title: Plug valve indicator
- Patent Title (中): 旋塞阀指示器
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Application No.: US13918479Application Date: 2013-06-14
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Publication No.: US08998168B2Publication Date: 2015-04-07
- Inventor: Brian C. Witkowski , Edward C. Kotapish
- Applicant: S.P.M. Flow Control, Inc.
- Applicant Address: US TX Fort Worth
- Assignee: S.P.M. Flow Control, Inc.
- Current Assignee: S.P.M. Flow Control, Inc.
- Current Assignee Address: US TX Fort Worth
- Agency: Gardere Wynne Sewell LLP
- Main IPC: F16K35/00
- IPC: F16K35/00 ; F16K37/00 ; F16K5/04

Abstract:
A valve has a body having a rotatable valve element. A drive mechanism has a drive input member and a drive output member that are coupled to the valve element for rotating the valve element. A shear member is operatively located within the drive mechanism between the drive input member and the drive output member for shearing in the event the force to rotate the valve element is excessive. The valve has indicia indicating open and closed positions for the valve element. An indicator is mounted to output drive member to properly align with the indicia regardless whether the shear member has sheared or not.
Public/Granted literature
- US20130299727A1 Plug Valve Indicator Public/Granted day:2013-11-14
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