Land vehicles: dumping – Tilting – Tilting about plural or shifting fulcrums
Reexamination Certificate
2005-03-01
2010-10-12
Gordon, Stephen (Department: 3612)
Land vehicles: dumping
Tilting
Tilting about plural or shifting fulcrums
C340S440000
Reexamination Certificate
active
07810887
ABSTRACT:
A method for preventing overturning a dump vehicle, the vehicle including a forward vehicle section with a forward frame and a wheel axle supported by the frame. The dump vehicle further includes a rear vehicle section with a rear frame and at least one wheel axle supported by the frame. The dump vehicle further includes an articulation joint, which connects the forward frame and the rear frame and allows the forward frame and the rear frame to pivot in relation to each other about an axis extending in a longitudinal direction of the vehicle. During a tilting procedure for unloading material from a container of the dump vehicle, the method includes determining if there is a risk for a pair of wheels of the wheel axle of the forward vehicle section to lose ground contact or if the pair of wheels have already lost ground contact. A warning signal for preventing an uncontrolled rotation of the forward vehicle section relative to the rear vehicle section via the articulation joint is further established when it is determined that the wheels of the forward wheel axle have lost or are about to lose ground contact.
REFERENCES:
patent: 4284987 (1981-08-01), Gibson et al.
patent: 4682145 (1987-07-01), Brawner, Jr.
patent: 5742228 (1998-04-01), Levy
patent: 6027173 (2000-02-01), Bettini
patent: 20217027 (2004-03-01), None
patent: 1153772 (2001-11-01), None
patent: 2385452 (2003-08-01), None
International Search Report for corresponding International Application PCT/SE2005/000291.
Hjert Lennart
Hjerth Kjell-Owe
Gordon Stephen
Volvo Construction Equipment + Holding Sweden AB
WRB-IP LLP
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