Ground cleaning machine

Details Ground cleaning machine Ground cleaning machine

2007-12-04

2007-12-04

Redding, David (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S340300, C015S078000

Reexamination Certificate

active

10854354

ABSTRACT:
A mobile floor or ground cleaning machine includes a hydraulic motor for propulsion and/or operating a cleaning brush. Airflow produced by a fan is directed through a housing located adjacent the cleaning brush for creating an area of low pressure adjacent the brush. The housing includes a filter system through which the airflow is directed. Under the influence of the airflow, the closed housing, which preferably is a unitary structure, directs dirt directly into a receptacle and directs dust through the filter system for subsequent deposit in the receptacle. The housing forms a reservoir for oil which drives the hydraulic motor, with the airflow within the housing serving to cool the oil.

REFERENCES:
patent: 3165775 (1965-01-01), Lutz
patent: 3604051 (1971-09-01), Wendel et al.
patent: 4290820 (1981-09-01), Swisher, Jr. et al.
patent: 4335482 (1982-06-01), Jones
patent: 4368554 (1983-01-01), Mealing et al.
patent: 4555825 (1985-12-01), Van Raaij
patent: 5137108 (1992-08-01), Knowlton et al.
patent: 6052865 (2000-04-01), Schwarze et al.
patent: 2650030 (1991-01-01), None
patent: 2287418 (1995-09-01), None

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