Inventor

NELSON LAWRENCE A

US7 patents

Patents

7 patents

US4751944AJun 21, 1988

Duplex mechanical tube plug

WESTINGHOUSE ELECTRIC CORP28 citations90

US4771810ASep 20, 1988

Multi-seal mechanical tube plug

WESTINGHOUSE ELECTRIC CORP25 citations89

US5027507AJul 2, 1991

Method for controlling leakage through degraded heat exchanger tubes in the tubesheet region of a nuclear generator

WESTINGHOUSE ELECTRIC CORP20 citations81

US5255717AOct 26, 1993

System for removing a plug from a heat exchanger tube

WESTINGHOUSE ELECTRIC CORP9 citations70

US4765374AAug 23, 1988

Multi-seal mechanical tube plug

WESTINGHOUSE ELECTRIC CORP19 citations70

US4829660AMay 16, 1989

System for removing a plug from a heat exchanger tube

WESTINGHOUSE ELECTRIC CORP14 citations69

US5715598AFeb 10, 1998

Method for sealing a bare hole defined by a nuclear heat exchanger tubesheet

WESTINGHOUSE ELECTRIC CORP10 citations68