Invention Grant
- Patent Title: Pressure released wiper assembly
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Application No.: US15321331Application Date: 2014-07-04
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Publication No.: US09989152B2Publication Date: 2018-06-05
- Inventor: Julian Putkowski , Hans Fredrik Sandberg
- Applicant: SEAL ENGINEERING AS
- Applicant Address: NO Fredrikstad
- Assignee: SEAL ENGINEERING AS
- Current Assignee: SEAL ENGINEERING AS
- Current Assignee Address: NO Fredrikstad
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/NO2014/050122 WO 20140704
- International Announcement: WO2016/003288 WO 20160107
- Main IPC: F16J15/3208
- IPC: F16J15/3208 ; F16J15/06 ; F16J9/20

Abstract:
A wiper-seal assembly for a cylinder with a cylinder wall and with a relative movable rod/piston rod with a piston wall is arranged for mounting in a ring-shaped groove in a cylinder wall or a rod/piston rod wall in front of a sealing or a steering. The wiper-seal assembly includes a ring-shaped wiper with one or more wiper sealing lip portions against the opposite relatively moving cylinder wall or the rod/piston rod wall. The wiper is further arranged for fluid transport from a gap between the cylinder wall and the rod/piston rod wall outside the ring shaped groove through pressure releasing flow conduits and further to the gap between the cylinder wall and the piston rod wall outside and at the opposite side of the ring shaped groove, and where the wiper-seal assembly further includes one or more filters.
Public/Granted literature
- US20170159820A1 PRESSURE RELEASED WIPER ASSEMBLY Public/Granted day:2017-06-08
Information query
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