Bulky dust sweeper
US4942639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1988 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H1/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bulky dust sweeper has side brushes for brushing and gathering bulky dust, and a main brush mounted on a bottom portion of its vehicle body and adapted to sweep the bulky dust into a hopper. The bulky dust sweeper also has a scrape-in device disposed within the hopper for scraping the bulky dust which has been swept into the hopper by the main brush, into a dust connected to the inside of the hopper, a push-in device disposed at an inlet port of the duct and adapted to push the bulky duct, which has been scraped into the duct by the scrape-in device, toward the uppermost end of the duct, and a dust collecting bag removably attached to a top opening of the duct and adapted to collect the dust therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.