Vacuum arrangement for a ground area

Details Vacuum arrangement for a ground area Vacuum arrangement for a ground area

2005-05-11

2008-10-28

Wilson, Lee D (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S320000, C015S321000

Reexamination Certificate

active

07441304

ABSTRACT:
A vacuum arrangement has a vacuum pipe having a vacuum opening facing a ground surface and adapted to pick up from the ground surface a material to be collected. The vacuum pipe conveys the material to be collected into a collecting container connected to the vacuum pipe. The vacuum pipe has a working area located within the area of the vacuum opening. At least one blower nozzle having a blower air exit is arranged such that a blower air flow exiting from the blower air exit is directed onto the ground surface into the working area. The blower air exit and the vacuum opening are positioned at a spacing relative to one another.

REFERENCES:
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patent: 3663984 (1972-05-01), Anthony et al.
patent: 3774262 (1973-11-01), Anthony et al.
patent: 4127913 (1978-12-01), Monson
patent: 4499713 (1985-02-01), Stone
patent: 5499493 (1996-03-01), Rosset
patent: 6279196 (2001-08-01), Kasen et al.
patent: 6286181 (2001-09-01), Kasper et al.
patent: 2002/0162187 (2002-11-01), Keller
patent: 2005/0257510 (2005-11-01), Maier et al.
patent: WO 2004/014120 (2004-02-01), None

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