Invention Grant
- Patent Title: Screed for road finishing machine
- Patent Title (中): 熨平板整理机
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Application No.: US12907341Application Date: 2010-10-19
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Publication No.: US08353642B2Publication Date: 2013-01-15
- Inventor: Roman Munz , Martin Buschmann , Achim Eul
- Applicant: Roman Munz , Martin Buschmann , Achim Eul
- Applicant Address: DE Ludwigshafen
- Assignee: Joseph Vögele
- Current Assignee: Joseph Vögele
- Current Assignee Address: DE Ludwigshafen
- Agency: Fish & Richardson P.C.
- Priority: EP09013219 20091020
- Main IPC: E01C19/22
- IPC: E01C19/22

Abstract:
In a screed with a basic screed and at least one extendable screed movable relative to the basic screed with a hydraulic cylinder and an electro-hydraulic control comprising a magnet-actuated directional control valve for at least controlling the direction of the hydraulic cylinder, the directional control valve for changing the rate of motion of the hydraulic cylinder is guided by an operator or automatically and is a proportional directional control valve (W) with proportional-electric direct actuation or proportional-electric-hydraulic pilot control. The proportional directional control valve for the hydraulic cylinder is connected on the actuation side with an electro-hydraulic control of a hydraulic system of the road finishing machine.
Public/Granted literature
- US20110091278A1 SCREED FOR ROAD FINISHING MACHINE Public/Granted day:2011-04-21
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