Gastight piston ring arrangement
AssigneeHoerbiger Kompressortechnik Holding GmbH
InventorsTino Lindner-Silwester, Christian Hold, Martin Molnar
Life of this patent
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Abstract
A segmented piston ring assembly includes piston ring segments 2 having stepped ends 5, 6, at least one piston ring segment 2 including a radial step on a radially inner peripheral surface 9 over a part of the width of the piston ring segment 2, and a single-cut sealing ring 3, which bears radially against the inside of the peripheral surface 9 of the piston ring segments 2, the sealing ring 3 including an axial recess 10, 12 which cooperates with the radial step 4 of the piston ring segment 2 to prevent relative rotation therebetween.
Claims14
A gastight piston ring assembly which comprises:
- a piston ring which comprises first and second ring segments that have respective stepped peripheral ends, stepped peripheral ends of the first ring segment contacting respective stepped peripheral ends of the second ring segment to provide an axial seal, said first ring segment including a first radial step at an inner surface thereof, said radial step having an axial width that is less than an axial width of said first ring segment and a length in a peripheral direction less than a peripheral length of said first segment, and
- a one-piece, single cut sealing ring positioned radially inwardly of said piston ring so as to contact inner peripheral surfaces of said first and second ring segments, said sealing ring including a first recess which extends through a radial thickness thereof and cooperates with said first radial step to prevent rotation of said sealing ring relative to said piston ring.
Dependencies are inferred from the claim text.