Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Patent
1997-11-05
1999-02-09
Warden, Jill
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
134 21, 134 2212, 134 24, 15345, 15395, B08B 904, B08B 302
Patent
active
058688587
ABSTRACT:
Method and apparatus for cleaning a heating, ventilating and air conditioning duct comprising a high pressure air emitting nozzle which is disposable inside the duct and an expansible and contractible draught member, which is responsive to differential pressure being created on opposite sides thereof, for drawing the high pressure air emitting member in a downstream path of travel through the duct. The draught member includes a sheet of fabric which is coupled, at its perimetrical edge portion via a plurality of lines, to the high pressure air emitting nozzle. The perimetrical edge of the fabric sheet, in its expanded condition, is spaced from a confronting portion of the duct via a low pressure, high velocity air zone which causes the draught member to move in a to-and-fro transverse path as it is moved downstream. A strip of abrasive material is provided along the perimeter of the draught member for wiping the inside of the duct as it moves to-and-fro downstream. The dislodged dirt is entrained in the high velocity air stream and is moved downstream.
REFERENCES:
patent: 526141 (1894-09-01), Bloomer
patent: 2508659 (1950-05-01), Brown
patent: 2794197 (1957-06-01), Crane
patent: 3091433 (1963-05-01), Riley, Jr.
patent: 3485671 (1969-12-01), Stephens
patent: 4011100 (1977-03-01), Ross
patent: 4141753 (1979-02-01), Creed
patent: 4792363 (1988-12-01), Franklin, Jr.
patent: 4800616 (1989-01-01), Wade
patent: 4984329 (1991-01-01), Wade
patent: 5003998 (1991-04-01), Collett
patent: 5364473 (1994-11-01), Van Der Does
patent: 5438729 (1995-08-01), Powell
patent: 5472514 (1995-12-01), Grimsley
patent: 5551458 (1996-09-01), Faxon
patent: 5580393 (1996-12-01), Lawther
patent: 5584093 (1996-12-01), Melendres
Chaudhry Saeed
Swartz John J.
Warden Jill
LandOfFree
Method and apparatus for cleaning heating air conditioning and v does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for cleaning heating air conditioning and v, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for cleaning heating air conditioning and v will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1945801