Anti-rotation device for contracting rod ring seals
AssigneePneumo Corporation
InventorGlenn S. Beidler
Life of this patent
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Abstract
Anti-rotation device consists of a thin washer having a pair of circumferentially and radially spaced tabs protruding axially from one side thereof which are adapted to be received in the gaps in the inner and outer rings, respectively, of a circumferential ring seal to prevent the gaps from aligning themselves. The tabs are desirably located approximately 180.degree. apart to keep the ring gaps on diametrically opposite sides of the seal.
Claims14
In combination, a circumferential ring seal including concentric inner and outer rings each having a joint gap therein, and anti-rotation means for maintaining the respective joint gaps in said rings out of alignment with each other, said anti-rotation means comprising an annular washer adapted to be placed adjacent one side of said seal, said washer having a pair of circumferentially and radially spaced tabs protruding axially from the side of said washer facing said seal, said tabs being adapted to be received in the respective joint gaps in said inner and outer rings.
In combination, a circumferential ring seal including concentric inner and outer rings each having a joint gap therein, and a washer adapted to be placed adjacent one side of said seal, said washer having a pair of circumferentially and radially spaced tabs protruding axially from the side of said washer facing said seal, said tabs being adapted to be received in the respective joint gaps in said inner and outer rings, said tab for said inner ring having a radial height slightly less than the radial height of the joint gap in said inner ring.
An anti-rotation device for contracting rod ring seals of the type including concentric inner and outer rings each having a joint gap therein, comprising a washer having a pair of circumferentially and radially spaced tabs protruding axially from one side of said washer, said tabs being adapted to be received in the respective joint gaps in said inner and outer rings, said washer having a central opening therein, the tab for said inner ring being located near the inner diameter of said washer and having a radial height slightly less than the radial height of the joint gap in said inner ring, and the tab for said outer ring being located near the outer diameter of said washer and having a radial height approximating the radial height of the joint gap in said outer ring.
Dependencies are inferred from the claim text.