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US 4,787,315 AGranted
Apparatus for severing tubular members
OwnerJohn J. Kennyinventor
Life of this patent
Estimating the term…
Abstract
The invention relates to an apparatus for explosively severing tubular members at a pre-designated severance level. The apparatus is designed to deliver a detonation signal to a ring-shaped explosive charge, to an annularly formed detonation signal receiving locations, so that explosion takes place substantially simultaneously about the circumference of the explosive charge about internal periphery of the tubular member at the severance level.
Claims19
An apparatus for severing tubular members, comprising:
- a frame adapted for positioning inside the tubular member, said frame carrying a circular-shaped explosive charge means with a plurality of circumferentially spaced detonation signal receiving locations, so as to facilitate explosion of the explosive charge means substantially simultaneously about circumference of the explosive charge means, said frame comprising a pair of parallel spaced-apart deflection plate means for creating a focused charge of the explosive charge means
- positioned between the deflection plate means.
An apparatus for severing tubular members, comprising:
- a frame having an upper and a lower circular deflection plate means affixed in spaced relationship to each other for creating a focused charge of an explosive charge means positioned between the deflection plate means;
- an upper and a lower compression plate means fixedly attached to the corresponding upper and lower deflection plate means in spaced parallel relationship thereto;
- a ring-shaped sleeve means perpendicularly attached to the upper and lower deflection plates, so that an annular space is formed between exterior of the sleeve means and outside periphery of the deflection plate means, said annular space being adapted for receiving the explosive charge means;
- and
- a detonation means for delivering detonation signal from a center of the frame to the explosive charge, so that detonation signal delivered to the explosive charge means facilitates a substantially simultaneous explosion of the explosive charge about an inner periphery thereof.
2 more elements
An apparatus for severing tubular members, comprising:
- an upper and a lower deflection plate means fixedly attached in parallel relationship to each other, said deflection plate means being provided with complementary mating services and forming a substantially circular space adapted for receiving an explosive charge;
- an upper and a lower circular compression plate means, said compression plate means having a diameter slightly greater than a diameter of the deflection plate means, said compression plate means being affixed to the upper and lower deflection plate means in respective parallel relationship;
- means for delivering detonation signal to a center of the deflection plate means;
- and
- an explosive transfer channel at the center of the deflection plate means for delivering a detonation signal substantially simultaneously to the annularly positioned explosive charge for creating a focused charge of the explosive charge means positioned between the deflection plate means.
2 more elements
Dependencies are inferred from the claim text.