Street sweeper and main broom suspension
US4222141A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1979 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | May 4, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H1/045
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A self-propelled street sweeper including a main frame, sweepings pick-up means underlying the main frame and a dirt box positioned on the frame for receiving the sweepings. A main broom is mounted at a rear end of the main frame adapted to sweep sweepings to the sweepings pick-up means or conveyor so the sweepings can be deposited into the dirt box and having sweeping and road travel positions. Means is provided for driving the main broom when in its sweepings position. Means is further provided for suspending the main broom from the rear end of the main frame including suspension arms located on opposite sides of the main broom. Bearing means are provided between the suspension arms and the opposite sides of the main broom. Floating suspension means is operatively connected between the main broom and the main frame providing a floating suspension for enabling the main broom to freely float on a ground supporting surface as the main broom is dragged behind the main frame in road engagement. The sweeper including the main frame and the main broom has a longer overall length when the main broom is in its sweepings position as compared to when the main broom is in a road travel posit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.