Valve retrieval mechanism for an inflatable packer system

Details Valve retrieval mechanism for an inflatable packer system Valve retrieval mechanism for an inflatable packer system

1980-02-26

1982-03-23

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

251319, E21B 4100

Patent

active

043208037

ABSTRACT:
A shifting sleeve retrieval mechanism for use in a valve having a stretched and collapsed configuration and an outer valve member adapted to be fixed against longitudinal movement and an inner valve member adapted to move longitudinally with the outer valve member. A shifting sleeve surrounds a length of the inner valve member and moves longitudinally with respect to both inner and outer valve members. The inner valve member has a shoulder thereon which rides under the shifting sleeve when the valve is collapsed and engages the shifting sleeve when the valve is elongated, thereby moving the shifting sleeve to its original position.

REFERENCES:
patent: 3335802 (1967-08-01), Seyffert
patent: 3381756 (1968-05-01), Reagan
patent: 3395758 (1968-08-01), Kelly et al.

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