Maintaining constant pick-up broom pattern
US4525888A · kind A · utility
2Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1983 |
| Grant date | Jul 2, 1985 |
| Priority date | — |
| Expiry date | Sep 9, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H1/056
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An overcenter, spring loaded linkage is disclosed for applying a lifting force to a pick-up broom of a street sweeper when the broom is new and heavy, and for applying a downward pressure on the broom when the broom is worn and light in weight. The linkage maintains a substantially constant pick-up broom pattern on the surface being swept throughout the useful life of the broom in spite of a substantial reduction in broom diameter due to wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.