Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2007-11-19
2011-11-08
Redding, David (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S322000, C015S401000
Reexamination Certificate
active
08051530
ABSTRACT:
A squeegee blade assembly and method of use for a floor surface maintenance machine. A blade/guide subassembly is inserted into a channel of a scrub head prior to operation. During operation, the subassembly is retained with the channel via friction and/or protruding structures. During a blade exchange procedure, the subassembly is retracted from the channel prior to separation of the blade from the guide. Interaction with a protruding structure within the channel signals to an operator that the subassembly has been properly positioned.
REFERENCES:
patent: 4226317 (1980-10-01), Nagano et al.
patent: 5819366 (1998-10-01), Edin
Eickholt David W.
Jeff Oberlin
Briggs and Morgan P.A.
Redding David
Tennant Company
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