Sweeper with recirculation hood having an unobstructed pickup wi

Details Sweeper with recirculation hood having an unobstructed pickup wi Sweeper with recirculation hood having an unobstructed pickup wi

1977-05-13

1978-07-11

Moore, Christopher K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15346, 15420, A47L 514

Patent

active

040992900

ABSTRACT:
A mobile street sweeper of the air recirculation pickup hood type has a hopper and a dust filter chamber. A main blower exhausts air from the hopper and introduces it into one end of the hood and air is returned to the hopper from the other end of the hood. An auxiliary blower withdraws air from the filter chamber and exhausts it to atmosphere. The hood is provided with an unobstructed front window and angled deflectors which windrow large objects into the window. The upstream end of the window is disposed at a zone wherein the static pressure of the air stream circulating along the hood is at atmospheric pressure and the downstream end of the window is disposed at a zone wherein the static pressure is only slightly less than atmospheric pressure.

REFERENCES:
patent: 3007191 (1961-11-01), Braun
patent: 3938217 (1976-02-01), Hommes
patent: 4044422 (1977-08-01), Larsen

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