Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1993-08-20
1995-07-04
Scherbel, David A.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15304, 15387, A47L 702
Patent
active
054288622
ABSTRACT:
An appliance adapted to be introduced into the interior of a pipe comprises a suction head arranged at the end of a flexible hose for suction air, which at the end adjacent to the hose has suction openings connected with the hose, carries a plurality of support wheels arranged in two planes perpendicular to the direction of insertion, and extending in a radial direction past the suction head, and is provided with a seal which is biased resiliently in a radially outward direction and is arranged between the suction openings and the hose.
REFERENCES:
patent: 3106735 (1963-10-01), Landrum
patent: 3446666 (1969-05-01), Bodine
patent: 3890905 (1975-06-01), Clavin
patent: 4027349 (1977-06-01), Clavin
patent: 4473921 (1984-10-01), Weber
patent: 4622709 (1986-11-01), Matsuda
patent: 5109567 (1992-05-01), Harrison
Scherbel David A.
Till Terrence R.
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