Street sweeper
US5251652A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle having a collecting and hauling system for collecting and hauling refuse in a containment vessel to a predetermined location. In the illustrated embodiment, a street sweeper having a street sweeping system utilizes a vertically extendable mast for elevating its hopper for dumping purposes. Additionally, air springs are provided to the wheel suspension system so that the air springs, when inflated, elevate the chassis and street sweeping system for road travel. When deflated, the chassis is lowered into solid support on the suspension system to provide a more rigid suspension for improved street sweeping and hopper dumping operation. Also, the street sweeper has a conveyor for conveying the dirt from dirt collection means upwardly into the hopper. A second air spring having resilient chamber walls is provided to support the conveyor means in movable relation so that it may be rotated upwardly in travelling position by inflation of the air spring and lowered into operating position by deflation thereof. The conveyor is preferably suspended from the chassis by pivotally hanging links to permit the conveyor to move between raised and lowered positions. Also, the street sweepi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.