Sweeping machine

Details Sweeping machine Sweeping machine

1999-10-20

2001-08-14

Modre, Chris K. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S340400, C015S374000

Reexamination Certificate

active

06272720

ABSTRACT:

The present invention relates to a sweeping machine intended for sweeping a ground surface, such as streets, roads, asphalt and concrete surfaces and the like, according to the preamble to claim
1
.
The currently most frequently used street sweeping machines comprise a suction fan and their brushes whirl up dust. Therefore the street is watered before the sweeping is begun. Large quantities of air are consumed.
The object of the invention is to remedy these drawbacks.
The invention gives the advantage that considerably more effective sweeping is achieved with a smaller amount of air compared with the prior-art technique. On the one hand, the ground surface is swept thanks to the inclined brushes, thereby sweeping most of the dirt towards a zone on the ground positioned between the ends of the brushes, from which zone the subsequent suction nozzle sucks up the dirt and, on the other hand, dirt that remains on the ground after brushing on either side of said zone is also sucked up by means of the suction nozzle thanks to the suction tube connection between the housing of the brush assembly and the suction nozzle. The elastic skirts on the housing of the brush assembly and the suction nozzle contribute to a great extent to the described favourable effect, said skirts dragging their lower edge along the ground and essentially sealing against the ground, such that dirt and residual dirt can be sucked up by using a small amount of air. The sealing of the skirts against the ground and the enclosing of the brushes in a tight housing connected to the suction nozzle means also, or on the other hand, that essentially no dirt (dust) is emitted to the atmosphere in consequence of the brushing.
In a preferred embodiment, the brushes are hingedly suspended from the carriage frame as is also the suction nozzle, such that both the brushes and the suction nozzle can follow irregularities in the ground surface.
In one more preferred embodiment, the frame of the carriage is divided into two parts, such that the brushes and the suction nozzle follow the irregularities of the ground surface, independently of each other.


REFERENCES:
patent: 293209 (1884-02-01), Herron
patent: 1417231 (1922-05-01), Deweese
patent: 1560612 (1925-11-01), Sims
patent: 1615348 (1927-01-01), Schroeder
patent: 3436788 (1969-04-01), Tammy
patent: 3605170 (1971-09-01), Hank et al.
patent: 4620341 (1986-11-01), Rigby
patent: 5542148 (1996-08-01), Young

Affiliated with

Also associated with

Rating

Sweeping machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sweeping machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sweeping machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2510780