Piston seal ring assembly with gap cover element

Abstract

To provide a piston seal ring assembly having a gap cover element. [Solution] This disclosure provides a seal ring assembly having a ring configured to seal a piston and cylinder device from a lower pressure region to a higher pressure region, and one or more gap cover elements. The ring may be segmented, and the gap cover elements may engage with the interfaces between the ring segments. The gap cover elements are configured to move radially outward and wear as the ring wears. The gap cover elements may include, for example, wedge-shaped features that engage with corresponding wedge recesses in the interface. The seal ring assembly may include a high-pressure boundary and a low-pressure boundary. As the seal ring wears, the gap cover elements remain engaged with the interface, thereby preventing ring gaps from forming on the low-pressure boundary.

Claims

[Claim 1] The invention as described in the drawings of the present application.

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