Re-enterable conduit sealing assembly
AssigneeXL Technologies, Inc.
InventorHenry E. Brandolf
Life of this patent
Estimating the term…
Abstract
A cable re-entry assembly for feedthroughs and the like is provided. The preferred embodiment includes an expansion mandrel positionally secured on the conduit with a heat shrinkable locking ring, a transition boot with a heat shrinkable sleeve portion and a rigid body portion which couples to a feedthrough nut, and a sealant between the conduit and the sleeve. Upon re-entry and re-use of the assembly, the mandrel mechanically expands the sleeve, when the sleeve is re-heated above its crystalline transition temperature, the expansion mandrel is translated against the sleeve and both the conduit and expansion mandrel are withdrawn from the sleeve. Following repair, the conduit is reinserted into the dimensionally unstable sleeve which is then heated to shrink about and reseal the conduit.
Claims13
A cable sealing assembly for a feedthrough, comprising:
- a) expansion mandrel means for securing about a conduit, said expansion mandrel means having a first end, a second beveled end, and a conduit channel;
- b) clamping means for abutting said first end and assisting to positionally secure said expansion mandrel on the conduit;
- and
- c) a transition boot generally defining a cylindrical body including a coupling element for securing said transition boot to said feedthrough, and a heat shrinkable sleeve positionable to shrink about the beveled second end of said expansion mandrel.
A cable sealing assembly for a feedthrough, comprising:
- a) an expansion mandrel having a cylindrical configuration defining a selected outer diameter and an axial bore of a diameter exceeding the outer diameter of the expansion mandrel to permit translation of said expansion mandrel over a cable, said expansion mandrel having a first end and a second beveled end;
- b) a heat shrinkable locking ring for abutting said first end and positionally securing said expansion mandrel to the cable, said lock ring being translatable over the cable to abut the first end of the expansion mandrel and being adapted to heat shrink and clamp onto the cable;
- c) a transition boot including an internally threaded cylindrical body having an inner diameter greater than the outer diameter of said expansion mandrel and a heat dimensionally unstable sleeve positionable to shrink about the beveled second end of the expansion mandrel;
- and
- d) an externally threaded nut securable on one side of and through a feedthrough port, the threaded nut being securable to a threaded portion of the transition boot.
Dependencies are inferred from the claim text.