초록 ▼

A closure is shown for an equipment sub having a generally cylindrical aperture leading to a bore and a bore stop. The closure is a circular body having a O-ring seal on a peripheral flange. A common actuating means moves spaced arcuate segments located on the circular body outwardly into contact wi

A closure is shown for an equipment sub having a generally cylindrical aperture leading to a bore and a bore stop. The closure is a circular body having a O-ring seal on a peripheral flange. A common actuating means moves spaced arcuate segments located on the circular body outwardly into contact with the bore stop provided in the bore of the equipment sub.

대표청구항 ▼

1. A closure for an equipment sub having a generally cylindrical aperture leading to a bore and a bore stop, the closure comprising:a circular body for engaging and disengaging the cylindrical aperture, the circular body carrying a peripheral seal on an outer peripheral flange thereof for sealing wi

1. A closure for an equipment sub having a generally cylindrical aperture leading to a bore and a bore stop, the closure comprising:a circular body for engaging and disengaging the cylindrical aperture, the circular body carrying a peripheral seal on an outer peripheral flange thereof for sealing within the aperture when in an engaged position; a plurality of arcuate segments mounted on the cylindrical body in a ring-shaped, spaced-apart pattern; a common actuating means connecting the plurality of arcuate segments for simultaneously moving the arcuate segments radially outward to engage the stop in the bore of the sub and thereby prevent axial movement in at least one direction between the circular body and the bore of the sub; wherein the common actuating means comprises a plurality of cross bars extending generally radially of the circular body, each cross bar being coupled at an outer extent thereof to a respective one of the segments and being coupled at an opposite inner extent thereof to a central hub assembly which can be rotated to cause radial movement of the cross bars to move the segments outwardly or inwardly; and wherein each arcuate segment has a pair of spaced guide rods attached thereto, each guide rod being received within a lateral opening provided in an associated guide block which is anchored to the circular body, and wherein the guide rods are, in turn, attached to a cross bar connector which is used to connect the guide rods to a selected cross bar.