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US 5,068,083 AGranted
Dashpot construction for a nuclear reactor rod guide thimble
AssigneeWestinghouse Electric Corp.
InventorsClarence D. John, Jr., James A. Sparrow
Life of this patent
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AssigneeWestinghouse Electric Corp.
InventorsClarence D. John, Jr., James A. Sparrow
Estimating the term…
A dashpot in a control rod guide thimble for a nuclear fuel assembly includes a lower tubular portion of an elongated main tube of the guide thimble, an auxiliary hollow tube inserted in the lower portion of the main tube, and an end plug attached to a lower end portion of the auxiliary tube. The auxiliary tube has an outside diameter slightly less than an inside diameter of the main tube to permit a close fitting relationship between an exterior surface of the auxiliary tube and an interior surface of the main tube lower portion. The auxiliary tube also has an upper end portion with an inside surface portion in axial cross-section flaring upwardly and outwardly to provide a tapered transition extending between and connecting an interior surface of the auxiliary tube with the exterior surface thereof.
In a control rod guide thimble having a main hollow tube defining a substantial portion of the length of said guide thimble, a dashpot comprising:
The dashpot as recited in claim wherein said main tube terminates at a lower end spaced above said end plug on said auxiliary tube.
In a control rod guide thimble having a main hollow tube defining a substantial portion of the length of said guide thimble, a dashpot comprising:
Dependencies are inferred from the claim text.