Cleaning apparatus for the wet cleaning of building walls and fl

Details Cleaning apparatus for the wet cleaning of building walls and fl Cleaning apparatus for the wet cleaning of building walls and fl

1981-07-27

1986-07-01

Freeh, William L.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417419, F04B 3504, F04B 3906

Patent

active

045977208

ABSTRACT:
A cleaning apparatus for wet cleaning building walls and/or floors and the like by means of high-pressure jet of cleaning liquid, which includes a pump driven by an electromotor. The pump and the electromotor are carried on a common shaft formed with a central passage and two opposite cross bores provided at the upper end thereof. The housing of the apparatus is filled with an electrically non-conductive coolant separated from the cleaning liquid. The parts of the pump through which the washing cleaning circulates are exposed to the coolant circulating through the central passage and cross bores of the shaft.

REFERENCES:
patent: 2504528 (1950-04-01), Hume
patent: 2556435 (1951-06-01), Moehr et al.
patent: 2568548 (1951-09-01), Howard et al.
patent: 2735026 (1956-02-01), Moehr
patent: 3318253 (1967-05-01), Campolong
patent: 3514225 (1970-05-01), Monden et al.
patent: 3653785 (1972-04-01), Dahlgren
patent: 3822967 (1974-07-01), Cade
patent: 3918479 (1975-11-01), Perl
patent: 3922114 (1975-11-01), Hamilton
patent: 3922133 (1976-11-01), Brunner

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