发明名称 |
Pressure released wiper assembly for a sealing arrangement |
摘要 |
A pressure released wiper assembly is arranged to fit into a ring-shaped groove in a cylinder or at a piston rod. The pressure released wiper with a V- or U-shaped cross section includes an opening in the axial direction to a potential contaminated side of the wiper assembly, a ring shaped base portion, a ring disk shaped rear portion, a lip portion, one or more through openings from the opening through the rear portion to a gap formed between the cylinder wall and the rod or piston outside the ring-shaped groove, and one or more filters covering at least the one or more through openings to the potential contaminated side of the wiper assembly in the filter holder. |
申请公布号 |
US9599226(B2) |
申请公布日期 |
2017.03.21 |
申请号 |
US201414893829 |
申请日期 |
2014.06.04 |
申请人 |
SEAL ENGINEERING AS |
发明人 |
Putkowski Julian;Sandberg Hans Fredrik |
分类号 |
F16J15/32;F16J15/16;F16J15/06;F16J15/56 |
主分类号 |
F16J15/32 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A pressure released wiper assembly, for a cylinder with a rotating or reciprocal relatively moving rod or piston, configured to be freely placed and captured in a circular groove in a cylinder wall of said cylinder, the wiper assembly comprising:
a ring-shaped filter holder with a V- or U-shaped cross section with a V- or U-shaped opening in an axial direction, said V- or U-shaped opening facing towards a potential contaminated side of the wiper assembly; one or more filters, and a fixing device, wherein the filter holder is one homogenous component and comprises:
a ring-shaped base portion for arrangement in the groove;a ring disk shaped rear portion opposite the V- or U-shaped opening;a sealing lip portion configured to contact and bear against the rod or piston, the sealing lip portion having a sidewall defining the V- or U-shaped opening;one or more through openings formed on said sidewall and passing through the ring disk shaped rear portion, and configured to allow fluid flow between the V- or U-shaped opening, on the potential contaminated side, and a gap formed between the cylinder wall and the rod or the piston at a protected side, opposite to the potential contaminated side, via the through openings, and wherein said fixing device is releasably fixed to said ring-shaped filter holder and fixes said one or more filters in said ring-shaped filter holder, and said one or more filters are arranged to cover the one or more through openings. |
地址 |
Fredrikstad NO |