| 摘要 |
<p>A composite elastomer-tipped tubular metallic device (10) for armature and check valve applications has a hollow tubular metal body (12) and a generally spherical elastomer ball (14) fitted into an end (16) of the body (12) so as to project outwardly beyond the body end (16). Also, the body (12) of the device has a seat structure (22) provided internally at the end (16) thereof which is adapted to capture and retain the ball (14) in the body end (16). In several embodiments of the device, the seat structure (22) is defined by a pair of axially spaced annular ribs (24,26) formed internally in the body (12) at the end (16) thereof, with the ribs (24,26) projecting radially inwardly toward a central axis (A) of the tubular body. In another embodiment, one of the ribs may be formed as a split ring received in an annular groove in an interior surface of the hollow body.</p> |
