Air spring actuator weight transfer apparatus
US6792704B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 14, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Nov 14, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H5/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention relates to using the expansion force of an air spring, coupled between a snowplow vehicle and the attached snowplow, so that contact between ground engaging components of the snowplow and the road can be controlled, either automatically or manually. The air spring is held in alignment as it expands longitudinally, by an apparatus using guides and struts. Longitudinal alignment is important, as bending of the air spring causes loss of force. Attachment points of the apparatus are drawn together, as the air spring expands. The longitudinal expansion force of the air spring can be transmitted directly to a chain or cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.