Method for marking a steam generator tube sheet

Details Method for marking a steam generator tube sheet Method for marking a steam generator tube sheet

1988-10-05

1991-08-06

Crowder, Clifford D.

Typewriting machines

Typing by other than type-face or type-die

400127, 101 32, B41J 302, B41F 1700

Patent

active

050372157

ABSTRACT:
A stamping device (28) having a stationary base assembly (76), a carriage assembly (52) mounted on the base assembly for stepwise horizontal movement in a first direction relative to the base assembly, and a marker assembly (34) mounted on the carriage assembly for stepwise horizontal movement in a second, perpendicular direction. The marker assembly includes a marking pin (30) vertically actuable by an air cylinder (42) for impacting the tube sheet (14) adjacent a preselected tube (16). A control system (124) sequentially activates stepping motors (60,66) and the air cylinder to produce a dot matrix character (114) on the tube sheet.

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patent: 4682182 (1987-07-01), Oyama et al.
patent: 4780009 (1988-10-01), Crick

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