Invention Grant
- Patent Title: Low volume, pressure assisted, stem and seat vent valve and associated methods
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Application No.: US14381976Application Date: 2013-03-07
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Publication No.: US09765896B2Publication Date: 2017-09-19
- Inventor: Joshua A. Shreve , Steven D. Trudeau
- Applicant: Waters Technologies Corporation
- Applicant Address: US MA Milford
- Assignee: Waters Technologies Corporation
- Current Assignee: Waters Technologies Corporation
- Current Assignee Address: US MA Milford
- Agency: McCarter & English, LLP
- Agent Deborah M. Vernon; Vadim Cherkasov
- International Application: PCT/US2013/029529 WO 20130307
- International Announcement: WO2013/134471 WO 20130912
- Main IPC: F16K1/38
- IPC: F16K1/38 ; F16K1/42 ; F16K31/06 ; B01D15/16 ; B01D15/40 ; G01N30/32

Abstract:
Exemplary embodiments are directed to vent valves, systems and methods generally involving a valve body that includes a seat retainer, a needle and a seat. The seat includes a bore extending there through and the needle includes a needle stem and a needle head. The seat is disposed inside the seat retainer. The needle stem is disposed inside the bore. The needle is configured to be pulled through the seat to stop flow through the bore. Exemplary embodiments are further directed to a system including a stem return spring mechanism and a solenoid return spring mechanism. A processing device is configured to actuate the solenoid return spring mechanism to permit the stem return spring mechanism to pull the needle through the seat to stop flow through the bore.
Public/Granted literature
- US20150014562A1 LOW VOLUME, PRESSURE ASSISTED, STEM AND SEAT VENT VALVE AND ASSOCIATED METHODS Public/Granted day:2015-01-15
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