Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1984-06-21
1987-02-03
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
166151, 166187, E02D 500, E21B 3312, F16J 1546
Patent
active
RE0323454
ABSTRACT:
A valve system for use in inflating packers mounted on mandrels is disclosed. The valve system uses one or more valves to permit, through the use of seals, the flow of fluid from the interior of a tubular mandrel to the interior of the inflatable packer when pressure applied in the mandrel exceeds at least a minimum pressure. In two embodiments, inflation of the packer beyond a given pressure is prevented. In all embodiments, the differential pressure across reciprocating seals is minimized through exposure of one or both sides, directly or indirectly, to the external pressure of the mandrel and packer.
REFERENCES:
patent: 3527296 (1970-09-01), Malone
patent: 4260164 (1981-04-01), Baker et al.
Completion Tool Company
Ward Robert S.
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