DEVICE FOR AT LEAST PARTIALLY BLOCKING AN OPENING AND FORMING A SEAL IN THE OPENING

摘要

A device includes a first body having a curved wall with a top surface that slopes away from the first body and a second body having an interior configured to receive the curved wall of the first body, the interior including a curved ramp with a sloped bottom ramp surface. The second body is mounted on the first body with the bottom surface of the curved ramp resting on the top surface of the curved wall. A compressible seal extends from the first body bottom, and a shaft projects from the second body through a passage in the first body and into the interior of the compressible seal. Rotating the bodies relative to each other causes the shaft to pull the seal against the first body and radially expand the seal against an interior wall of an opening in which the device is placed to form a seal therewith.

主权项

1. An adapter comprising:
a first body having a bottom; a second body having a top and being rotatably mounted to the first body, the first body and the second body being movable between a first angular relationship and a second angular relationship; a first ramp having a first ramp surface on a first one of the first body and the second body; a ramp follower on a second one of the first body and the second body in contact with the first ramp surface; the first body bottom being separated from the second body top by a first distance when the first body and second body are in the first angular relationship and by a second distance greater than the first distance when the first body and the second body are in the second angular relationship; the ramp follower moving from a first location on the first ramp surface to a second location on the first ramp surface in response to the first body and the second body moving from the first angular relationship to the second angular relationship; a compressible seal extending from the first body, the compressible seal having a first end at the first body, a second end spaced from the first body, an interior, and an outer wall configured to form a fluid-tight seal with an interior of an opening; a shaft projecting from the second body through a passage in the first body and into the interior of the compressible seal, the shaft being configured to move relative to the first body when the first body and the second body move from the first angular relationship to the second angular relationship and being configured to move the second end of the compressible seal toward the first body and radially expand the compressible seal against the interior of the opening when the first body and the second body move from the first angular relationship to the second angular relationship.