Hydraulic expansion tool for tubular element

Details Hydraulic expansion tool for tubular element Hydraulic expansion tool for tubular element

1988-11-03

1990-02-20

Spruill, Robert L.

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

29727, 29523, B21D 2602, B23P 1100

Patent

active

049015516

ABSTRACT:
To an elongate body (1) having preferably an adjustable length, seals (2, 3) are fixed. The seals comprise a skirt (22) forming a crown which surrounds a body portion at a small distance from the surface thereof, the skirt being made of a material having a flexibility sufficient to be slightly reduced in diameter when the tool is introduced into a tubular element to be expanded. The skirts of the two seals may be interconnected, thus outwardly delimiting an internal ring-shaped chamber (20) intended to receive an expansion fluid.

REFERENCES:
patent: 2672175 (1954-03-01), Howard
patent: 3690141 (1972-09-01), Brownwell
patent: 4608739 (1986-09-01), Miller
patent: 4616392 (1986-10-01), Snyder
patent: 4768275 (1988-09-01), Schmitz
patent: 4805430 (1989-02-01), Schmitz et al.

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