Salt-sand spreader with liquid injector
US5931393A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Jun 13, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2019/208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A salt-sand spreader for use for spreading materials onto road surfaces primarily where icing or slippery conditions occur. The spreader includes an applicator for coating the particles with a liquid prior to discharging the particles to tend to speed up the ice melting reaction and if a suitable coating is used to inhibit corrosive action of the salt. Additionally, the velocity of discharge of the particles from a discharge mechanism is sensed or correlated to fan speed and the discharge velocity is adjusted to match the forward speed of the vehicle so that there is essentially zero relative velocity between the particles and the ground when the particles strike the ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.