E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/41
E21B 23/02 (2006.01) E21B 23/03 (2006.01)
Patent
CA 1150624
ABSTRACT OF THE DISCLOSURE A latch for anchoring well tools in landing receptacles such as nipples or side pocket mandrels in well flow conductors, the receptacles having a locking recess providing a lock shoulder which may be fully annular or only 180 degrees in extent. The latch includes a housing having windows in the wall thereof and a locking lug in each window movable both radially and axially of the housing to engage and disengage the receptacle lock shoulder. A spring biases the lugs downwardly. A lock sleeve slidable on a central core normally holds the lugs against inward movement from expanded locking position and has a recess in its outer surface which allows the lugs to move up and retract thereinto to pass obstructions in a well, the spring returning the lugs to expanded position as soon as such obstruction has been passed. Shearing a pin permits the lock sleeve to be lifted to a position to allow the lugs to retract freely. In a modified embodiment of the invention, the device includes a core which is slidable and which is operationally associated with the well tool supported by the device and performs a function therein.
372464
Otis Engineering Corporation
Riches Mckenzie & Herbert Llp
LandOfFree
Latch for well tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Latch for well tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Latch for well tools will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-436172