Invention Grant
- Patent Title: Power actuated valve
- Patent Title (中): 动力阀
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Application No.: US11704764Application Date: 2007-02-09
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Publication No.: US07654504B2Publication Date: 2010-02-02
- Inventor: Kenneth M. Madden
- Applicant: Kenneth M. Madden
- Applicant Address: US NH Raymond
- Assignee: Parker & Harper Companies, Inc.
- Current Assignee: Parker & Harper Companies, Inc.
- Current Assignee Address: US NH Raymond
- Agency: Daniels Patent Law PLLC
- Agent Scott A. Daniels
- Main IPC: F16K31/12
- IPC: F16K31/12
Abstract:
An improved power actuated valve, particularly a ball valve, which can be manually opened or closed quickly, in the event of failure of power operation, by manual turning force applied directly to the control stem of the valve without the necessity to overcome any drag or negative torque imposed by the power operating mechanism and speed reducing transmission.
Public/Granted literature
- US20070215825A1 Power actuated valve Public/Granted day:2007-09-20
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