Entrance dust arrester

Details Entrance dust arrester Entrance dust arrester

1984-10-15

1985-11-12

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15312R, 15314, A47L 538

Patent

active

045518793

ABSTRACT:
An entrance dust arrester is provided which vacuums the area directly under a door as the door is opened and closed, thereby preventing the tracking of debris into a clean area. A housing with downward facing vacuum apertures may be attached to the outside of the door or may be built into the door itself. A system of air directing vanes distributes the vacuum evenly. The vacuum source itself may be integral to the housing or may be external and connected by a moveable coupling. The vacuum source is turned on and off by either or magnetic reed switch or a pressure operated switch.

REFERENCES:
patent: 2599049 (1952-06-01), Dollinger
patent: 2675273 (1954-04-01), Sanders
patent: 2895159 (1959-07-01), Ostrow
patent: 3027587 (1962-04-01), Bierstock
patent: 3027588 (1962-04-01), Bierstock
patent: 3994528 (1976-11-01), Humphrey

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