Sandwich shaped piston seal

Details Sandwich shaped piston seal Sandwich shaped piston seal

1983-06-02

1984-08-21

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 30, 277125, 277182, 277188A, 277234, F16J 1512

Patent

active

044666179

ABSTRACT:
A sandwich shaped piston seal is shown for sealing multiple mandrel well packers. The seal has a plate shaped center portion made of a compliant elastomer material having upper and lower surfaces and an outer rim. The center portion is provided with multiple holes for receiving multiple mandrels with the mandrels being arranged perpendicular to the upper and lower surfaces. A pair of external backup rings circumscribe the outer rim of the elastomeric center portion and a pair of internal backup rings circumscribed the interior surface of each of the mandrel holes. A pair of header plates surround the center portion in sandwich fashion, the plates being provided with multiple holes corresponding to the holes in the center portion for receiving the mandrels. The backup ring design prevents extrusion of the elastomeric sealing portion when pressure acts upon the seal.

REFERENCES:
patent: 1727583 (1929-09-01), Cant
patent: 2072863 (1937-03-01), Balfe
patent: 2720267 (1955-10-01), Brown
patent: 2846280 (1958-08-01), Berg
patent: 3441662 (1969-04-01), Augenstein et al.
patent: 4219204 (1980-08-01), Pippert
patent: 4310163 (1982-01-01), Pippert

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