Surface cleaning machine with hopper dumping mechanism
US4327455A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1980 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | Dec 4, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/40
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A surface cleaning machine and particularly a riding power sweeper is provided. The sweeper has a main rotary broom and an adjacent hopper with an inlet opening for receiving dirt and debris swept from the surface by the broom. The hopper has an outlet opening spaced from the inlet opening through which dirt and debris are emptied from the hopper, and a dumping door is located adjacent the outlet opening for opening and closing the outlet opening. The dumping mechanism for the hopper includes a single drive unit which is connected to the hopper and to the dumping door. When the hopper is to be dumped, the drive unit is operated to first open the dumping door to a position against a stop. After the door contacts the stop, continued operation of the drive unit moves the hopper to a tilted dumping position in which the dirt and debris are emptied through the open outlet opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.