Manual blowout preventer with invertible rams
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United States of America Patent
Stats
-
Dec 11, 1990
Issued Date -
N/A
app pub date -
May 21, 1990
filing date -
Oct 2, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Two embodiments of a wireline blowout preventer are disclosed. The rams in each embodiment are keyed to end bodies which close the outer ends of body cross bores for the rams. One blowout preventer embodiment utilizes cross pins having flat surfaces positioned in each end body. The pin flat surfaces slidably engage flat surfaces on a sleeve connected and keyed to each ram to key rams to end bodies. The other embodiment keys the rams to the end bodies with a square sleeve connected and keyed to each ram. Each square sleeve is moveable through square hole in the end body. The end bodies may be positioned inverted, inverting the rams to prevent flow downwardly through the blowout preventer when the rams are in closed position.
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