Road marking machine with a pump combination driven in proportion with the traveling speed
US6047902A · kind A · utility
8Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A road marking machine comprising a spray gun and a combination of two displacement pumps for supplying the marking substance to the spray gun, wherein the combination is driven in proportion with the traveling speed and wherein the pumps, each after starting the positive displacement operation thereof, which starts during the supply operation of the corresponding other displacement pump, pre-compress the marking substance, then stops and continues the pressure stroke when the other displacement pump ends its supply, with hydraulic cylinders for driving the displacement pumps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.