Abrading – Precision device or process - or with condition responsive... – With feeding of tool or work holder
Reexamination Certificate
2011-08-16
2011-08-16
Rose, Robert (Department: 3727)
Abrading
Precision device or process - or with condition responsive...
With feeding of tool or work holder
C451S021000
Reexamination Certificate
active
07997955
ABSTRACT:
A method for the circumferential interior treatment of pipe elbows, including a step of positioning a working member within a pipe elbow and moving the working member along a portion of a length of the pipe elbow between selected working positions, while concurrently manipulating the pitch and rotational positioning of the pipe elbow to maintain a concentric rotation of the pipe elbow about the working member.
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“Brospec: Fusionbond® Plate and Pipe,” Brospec Inc., Howick, Quebec, Canada, 12-page product brochure, published prior to Sep. 14, 1999.
“CF Ultra Tech Abrasion Resistant Piping Systems,” CF Ultra Tech Inc., Grafton, Wisconsin, 4-page product brochure, published prior to Sep. 14, 1999.
“Indulay® Abrasion Resistant Chromium Carbide Welded Overlay for Piping Products,” Indutech Industrial Technology, Indutech Canada Limited, Calgary, Alberta, Canada, 4-page product brochure, published prior to Sep. 14, 1999.
Bradken Canada Ltd
Husch & Blackwell LLP
Rose Robert
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