Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Reexamination Certificate
2011-05-03
2011-05-03
Barr, Michael (Department: 1714)
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
C134S008000, C134S018000, C015S104090, C015S104095, C015S104160, C015S104330
Reexamination Certificate
active
07935192
ABSTRACT:
A rotatable, portable drum auger drain cleaning device includes a rotational control which is biased towards the off position. The rotational control device is utilized in conjunction with a motor and the drum to direct drum rotation. The rotational control is typically biased in the off position making it the default position. The rotational control must therefore be manually moved to either a forward or reverse position. When in the forward position, the rotational control can be locked, and when in the reverse position, the switch must be manually held in position or the switch will return to the off position.
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Pfeiffer Anton D.
Silverman David
Silverman Michael
Barr Michael
Campbell Natasha
Friedman Barry I.
General Wire Spring Co.
Metz Lewis Brodman Must O'Keefe LLC
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