×

Air cleaning system

  • US 4,807,321 A
  • Filed: 07/27/1987
  • Issued: 02/28/1989
  • Est. Priority Date: 12/16/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. An automatic gas-moved cleaning device comprising a source of gas, a movable first cylindrical means (2) laterally movable upon a second cylindrical means (1), said first cylindrical means containing a fixed body (7) having adjacent its opposite sides gastight chambers (3) and (3'"'"'), said chambers adapted to be alternately expanded and contracted with entrance of gas therein, when one of said chambers expands as filled with gas the other chamber adapted to be reduced in volume, said first cylindrical means (2) adapted to be continuously moved laterally along said second cylindrical means (1) as gas fills each chamber alternately, at least one nozzle (21) in gas flow relation with each of said chambers and adapted to permit gas to continuously flow out said nozzles from the interior of each of said chambers, said body (7) comprising means to direct gas flow alternately into each chamber and thereby cause first cylinder means (2) to move laterally back and forth and wherein the same source of gas is used to provide gas jets exiting said nozzles (21) and to provide movement of first cylindrical means (2) back and forth along the lateral periphery of a roller (29) to be cleaned.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×