Sweeper conveyor overflow and leakage recycling ramp

Details Sweeper conveyor overflow and leakage recycling ramp Sweeper conveyor overflow and leakage recycling ramp

1999-09-15

2001-02-27

Till, Terrence R. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

Brushing

C015S340300

Reexamination Certificate

active

06192542

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to sweepers for use primarily in large outdoor areas such as streets, parking lots and the like, but also indoors in large industrial facilities. Such sweepers utilize a large debris hopper, a cylindrical sweeping brush, and a conveyor which moves debris swept by the cylindrical brush up to an opening near the top of the hopper. The sweeping compartment maybe enclosed and vacuumized to limit dust generated by sweeping. Although there is a seal between the conveyor enclosure and the hopper, at times, particularly when the hopper and conveyor are raised into a non-sweeping position, the debris may fall down and collect on the frame and in the moving parts of the mechanism which tilts and lifts the hopper for dumping, causing potential malfunctions and requiring constant maintenance. The present invention is directed to a simply constructed and reliable recycling ramp, which will substantially eliminate cleaning of the machinery on the vehicle adjacent the hopper and conveyor. The ramp collects debris which may fall down into the space between the hopper and conveyor enclosure, and holds this debris until such time as the conveyor and hopper are raised to a non-operating position, when the ramp becomes aligned with a lower opening in the conveyor enclosure and the debris slides down either into the conveyor enclosure or into the space beneath the conveyor and in front of the sweeping brush.
SUMMARY OF THE INVENTION
The present invention relates to sweepers for use in areas such as streets, parking lots, large industrial facilities, and in particular to a system for collecting overflow and leakage debris which may fall between the hopper and conveyor and foul portions of the machinery that moves the conveyor and hopper.
Another purpose of the invention is to provide a simply constructed reliable ramp and related seal, which prevents overflow and leakage debris from clogging the sweeper mechanisms.
Another purpose is a conveyor enclosure for the described use which has a normally sealed opening adjacent the collecting ramp to keep the vacuumizing air flow directed to the sweeping area, which opening is aligned with the ramp when the conveyor enclosure is raised to a non-operating position.
Another purpose is a conveyor enclosure for the described use which has a normally sealed opening adjacent the collecting ramp to keep the vacuumizing airflow directed to the sweeping area, which opening is aligned with the ramp when the conveyor enclosure is raised to a non-operating position.
Other purposes will appear in the ensuing specification, drawings and claims.


REFERENCES:
patent: 3649982 (1972-03-01), Mortensen
patent: 4516285 (1985-05-01), Pineau
patent: 4549326 (1985-10-01), Pineau
patent: 4754521 (1988-07-01), Zoni
patent: 4884313 (1989-12-01), Zoni
patent: 4914773 (1990-04-01), Ham
patent: 5251652 (1993-10-01), Strauser et al.
patent: 5630286 (1997-05-01), Vanderlinden

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