Patent Number: 054266750
Section: claims

1. A self-aligning seal system for maintenance service of a generally vertical aligned cylindrical housing extending upward passing through the lower portion of a nuclear reactor plant pressure vessel for embracing a rotatable shaft connecting an external motor to an internal coolant circulating pump impeller; said self-aligning seal system comprising the combination of:  said self-aligning seal system comprising the combination of: 2. The self-aligning seal system of claim 1, wherein the seal guide member is provided with at least three downward extending tapered legs. 3. The self-aligning seal system of claim 1, wherein the seal guide member is provided with four downward extending tapered legs. 4. The self-aligning seal system of claim 1, wherein the central knob projecting from the closed top of the cylindrical seal unit is mounted on an extending shaft and provided with a collar stop to preclude the seal guide member from separating from the cylindrical seal unit. 5. A self-aligning seal system for maintenance service of a generally vertical aligned cylindrical support housing extending upward passing through the lower portion of a nuclear reactor plant pressure vessel for embracing and supporting a rotatable drive shaft connecting an external motor to an internal coolant water circulating pump impeller;