Surface cleaning apparatus

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction

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Details

239556, E01H 108, E01H 110

Patent

active

043922708

ABSTRACT:
An improved apparatus for cleaning roofs and other surfaces having both coarse and fine compacted particulate matter to be cleaned. A spray of water under pressure of 1,000 to 2,000 psi is applied from the inside of an open bottommed vacuum chamber toward the surface to be cleaned along a line at an angle across the chamber, to dislodge fine and/or coarse residue from the surface. A second spray is immediately applied following the first before the residue resettles on the surface, while at the same time a vacuum is applied to the chamber to remove the deflected spray and residue.

REFERENCES:
patent: 2909800 (1959-10-01), Grindle et al.
patent: 3423027 (1969-01-01), Small et al.
patent: 3439374 (1969-04-01), Wisdom
patent: 3447188 (1969-06-01), Maasberg
patent: 3871051 (1975-03-01), Collier
patent: 3909197 (1975-09-01), Cremers
patent: 3987964 (1976-10-01), Pittman et al.
patent: 4137600 (1979-02-01), Albishausen
patent: 4164055 (1979-08-01), Townsend
patent: 4168562 (1979-09-01), Maasberg

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