Extension screed for a paving vehicle
US7651295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2004 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Mar 5, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2301/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An extension screed is for a paving vehicle screed assembly that includes a main screed. The extension screed includes two base members movably connectable with the main screed and two vertical actuators each extending between the main screed and a separate base member. Each vertical actuator linearly displaces the connected base member with respect to the main screed in opposing vertical directions. A carriage preferably includes an inner frame movably connected with the base members and an outer frame slidably disposed about the inner frame and configured to support a screed plate. The vertical actuators vertically displace the carriage and alternatively pivot the carriage within a vertical plane. Further, a first horizontal actuator displaces the inner frame with respect to the two base members in opposing horizontal directions and a second horizontal actuator displaces the outer fame with respect to the inner frame in opposing horizontal directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.