Surface cleaning apparatus

Gas separation – Means within gas stream for conducting concentrate to collector

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Details

55190, 15320, 15344, 15352, 15353, 15385, B01D 1900

Patent

active

047986131

ABSTRACT:
A portable vacuum surface cleaning apparatus for taking up and recovering fluids such as liquids and debris from floors or carpets that includes an elongated circuitous or convoluted passageway having an inlet at one end and an outlet at the other end adapted for communication with a vacuum source and communicating with the recovery chamber through a top access opening in a region thereof intermediately between the inlet and outlet, the elongated passageway including a first section extending from the inlet to an elevated region thereof remote from the inlet and above the recovery chamber portion, an intermediate section in communication with the first section in the elevated region thereof and extending therefrom to overlie and communicate with the top opening of the recovery chamber portion, and a third section in communication with the intermediate section in the region thereof above the top opening and extending therefrom toward the outlet.

REFERENCES:
patent: 2093748 (1937-09-01), Becker
patent: 2635277 (1953-04-01), Belknap
patent: 2639005 (1953-05-01), Gerstmann
patent: 2822061 (1958-02-01), Pettit et al.
patent: 3939527 (1976-02-01), Jones
patent: 4062085 (1977-12-01), Duncan
patent: 4114229 (1978-09-01), Jones et al.
patent: 4137599 (1979-02-01), Steyer
patent: 4216563 (1980-08-01), Cyphert
patent: 4462137 (1984-07-01), Berfield et al.
patent: 4542557 (1985-09-01), Levine
patent: 4675936 (1987-06-01), Rawlins

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