Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1982-07-23
1984-05-29
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
15DIG2, B60S 306
Patent
active
044506007
ABSTRACT:
The device for washing tractor-trailer truck units includes a gantry adapted to move over the unit, a pair of rotary, vertical, tractor brushes pivotally mounted on a front portion of the gantry for pivotal movement between a neutral position and a retracted position disposed laterally outwardly from the tractor-trailer unit, a pair of rotary, vertical, trailer brushes mounted on the rear portion of the gantry for pivotal movement between neutral and retracted positions, and a rotary, horizontal, top brush mounted on the gantry above the tractor-trailer unit for movement between an operating position and a retracted position. All the brushes are selectively pivoted to the retracted position by air-actuated cylinders and the tractor and trailer brushes are automatically releasably latched in the retracted position by a latching arrangement. During rearward movement of the gantry through a wash cycle, the tractor brushes sequentially scrub the front and side of the tractor below the elevation of the sideview mirrors and the lower portion of the trailer and the trailer brushes sequentially scrub the sides and rear of the trailer. During forward movement of the gantry through a rinse cycle, the trailer and tractor brushes sequentially scrub the trailer and the tractor in the opposite direction. The latching arrangements are automatically operated at an appropriate time during the wash and rinse cycles to retain the tractor brushes in a retracted position during movement between the tractor and trailer.
REFERENCES:
patent: 4039014 (1977-08-01), Sellars
patent: 4306325 (1981-12-01), Pyle et al.
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