Invention Application
- Patent Title: VALVE STEM OF NEEDLE THROTTLE VALVE AND METHOD OF FABRICATING THE SAME
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Application No.: US16577641Application Date: 2019-09-20
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Publication No.: US20200165899A1Publication Date: 2020-05-28
- Inventor: Pengfei LIU , Yongfeng HU , Hehong WU
- Applicant: SHAREATE TOOLS LTD.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@61386634
- Main IPC: E21B34/06
- IPC: E21B34/06 ; F16K17/40 ; F16K3/02
Abstract:
This disclosure provides a valve stem of a needle throttle valve and the method of fabricating the same. The valve stem includes ahead part, a body part, a washer, a first solder sheet and a second solder sheet. The washer is made of metal. The first solder sheet is placed between the head part and the washer, and the second solder sheet is placed between the body part and the washer. The head part, the washer and the body part are jointed together by the melted first solder sheet and the melted second solder sheet.
Public/Granted literature
- US11414955B2 Valve stem of needle throttle valve and method of fabricating the same Public/Granted day:2022-08-16
Information query
