Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for other than internal combustion engine – or...
Reexamination Certificate
2005-07-12
2005-07-12
Derakshani, Philippe (Department: 3754)
Seal for a joint or juncture
Seal between fixed parts or static contact against...
Contact seal for other than internal combustion engine, or...
C222S648000
Reexamination Certificate
active
06916025
ABSTRACT:
A tank for storing fluid materials includes a piston having a channel, and an annular seal secured to the channel. The annular seal projects outwardly from the circumference of the piston. The piston further includes a plurality of radially arranged, spaced-apart tensioners that stretch the seal into sliding engagement with the interior surface of the tank. As the piston slides through the tank, the tensioners independently move radially inward and outward to compensate for shape-wise imperfections of the tank, such that the fluid materials extrude through the opening of the tank without bypassing the annular seal.
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Coats & Bennett P.L.L.C.
Derakshani Philippe
Piston Technology, LLC
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