Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-04-11
2006-04-11
Porta, David (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C122S379000, C134S018000, C134S024000, C134S034000, C134S022100, C134S022110, C134S022120, C134S022180
Reexamination Certificate
active
07026598
ABSTRACT:
A method for controlling the positioning of a stream of pressurized fluid against a surface zone of a stream generator to clean contaminants. The coordinates of a plurality of points of the surface zone to be cleaned are first determined. The coordinates are measured with respect to a fixed coordinate system with origin point at the location where the lance water cannon penetrates the cannon wall of the steam generator. The determined boundary points are converted into corresponding angles with respect to the horizontal plane and the cannon wall. These angles are then used directly to control the position of the lance with respect to the fixed coordinate system. The stream of pressurized fluid is directed against the surface zone in a predetermined pattern by monitoring and controlling the angle of the lance through axial resolvers.
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HydroJet Boiler Cleaning System Announcement, Jan. 25, 2002.
HydroJet Technology, paper presented by Clint Brown, dated Aug. 2001.
5 undated photographs showing components of HydroJet cleaning system available from Diamond Power International, Inc.
Jameel M. Ishaq
Schwade Hans
Clyde Bergemann, Inc.
Ellis Suezu
Porta David
Womble Carlyle Sandridge & Rice PLLC
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