Apparatus and method for discharging static electricity on the i

Details Apparatus and method for discharging static electricity on the i Apparatus and method for discharging static electricity on the i

1991-04-29

1992-12-22

Bell, Janyce

Coating processes

Interior of hollow article coating

Spraying

118317, 118323, 118DIG10, 427140, 427290, 427322, 427421, B05D 722

Patent

active

051733331

ABSTRACT:
An apparatus (10) for discharging the internal surface of a plastic pipe (12) provides a saddle (32) having an internal cavity (35) formed therein for permitting threadable engagement of a shaft (24). The shaft (24) has a cutter (40) at one end for penetrating the plastic pipe (12) upon engagement. The shaft (24) also has a nozzle (28) formed adjacent to the cutter (40) for spraying an antistatic fluid (26) into the plastic pipe (12) for discharging the plastic pipe (12).

REFERENCES:
patent: 2207576 (1940-04-01), Brown
patent: 3164747 (1965-01-01), Yahnke
patent: 3608821 (1971-09-01), Simm et al.
patent: 4169279 (1979-09-01), Friedman, Jr. et al.
patent: 4319303 (1982-03-01), Thorn
patent: 4345297 (1982-08-01), Check
patent: 4758295 (1988-07-01), Sawgide et al.
"Static Electric Pinholing Through Polyethylene Pipe" by Mark Staker 1989 American Gas Association Distribution Conference.

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