Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1984-04-26
1985-06-18
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
F16J 905, F16J 524
Patent
active
045237654
ABSTRACT:
A high-pressure sealing means for two parts of deep-well drilling tools which are longitudinally movable in relation to one another consists of a wearing sealing ring (7) which is disposed in an annular groove in a first part (1) and bears against the second part (2) and prestressed radially by a pressure ring (14). The wearing sealing ring (7) has a wall surface (13) extending substantially over its axial length, which seals against the second part (2). Moreover the ring (13) is smaller than the width of the annular groove (3) of the first part (1) receiving it and is displaceable between the two sides (4,5) of the annular groove for the selective formation of a static sealing surface at one of the sides (4,5) of the annular groove. The pressure ring (14) is formed from elastomer material, has a large volume, and is gripped, compressed and deformed between the wall surface (10) of the wearing sealing ring (7) situated opposite the sealing wall surface (13) and the bottom (6) of the annular groove.
REFERENCES:
patent: 3397928 (1968-08-01), Galle
patent: 3606356 (1971-09-01), Beroset
patent: 4151999 (1979-05-01), Ringel et al.
patent: 4244280 (1981-01-01), Stoll
Fred Walter
Norton Christensen, Inc.
Smith Robert I.
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