Latch assembly for well tools
A latch assembly is described comprising: a tubular body adapted to be secured at a first end with a well tool, the body having a plurality of circumferentially spaced windows opening through a side wall thereof into the bore through the housing spaced from the first end of the body and an internal annular lock ring recess in the body around the bore on the other side of the windows from the first end; a tubular inner mandrel slidably positioned within the body, the inner mandrel having an enlarged head end providing an external annular stop shoulder engageable with the second opposite end of the body at a lock condition of the latch assembly; releasable means between the body and the inner mandrel for releasably holding the inner mandrel at a retracted running position of the latch assembly at which the top shoulder on the inner mandrel head is spaced from the second end of the body; a split latch ring on the inner mandrel engageable with the latch ring recess in the body when the inner mandrel is at the second lock position at which the stop shoulder on the head of the inner mandrel engages the second end of the body; a radially expandable lug in each of the windows of the body movable between an inner release position and a radially expanded outer locking position at which outer bosses thereon project outwardly of the outer surface of the body; and a core slidably disposed through the inner mandrel.
- Assignee:
- Otis Engineering Corp., Dallas, TX
- Patent Number(s):
- US 4722393
- OSTI ID:
- 5340354
- Resource Relation:
- Patent File Date: Filed date 29 Apr 1987
- Country of Publication:
- United States
- Language:
- English
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