EP 1539557 A4 20080625 - DOLLY WHEEL STEERING SYSTEM FOR A VEHICLE
Title (en)
DOLLY WHEEL STEERING SYSTEM FOR A VEHICLE
Title (de)
NACHLÄUFERRADLENKSYSTEM FÜR EIN FAHRZEUG
Title (fr)
SYSTEME DE DIRECTION DE ROUES SERVANTES D'UN VEHICULE
Publication
Application
Priority
- US 0316683 W 20030528
- US 15646602 A 20020528
- US 15630402 A 20020528
Abstract (en)
[origin: WO03103365A1] A dolly wheel steering system includes a dolly wheel, a dolly wheel spindle in communication with the dolly wheel such that the dolly wheel and the dolly wheel spindle are fixedly secured to one another and are rotatable as a single unit. The dolly wheel spindle is in communication with a coupling device and a steering control system. The steering control system and the coupling device are each in communication with a controller to regulate actuation of each. When a signal from the controller requests utilization of steering control, the coupling device applies a restraining force to the dolly wheel spindle to limit free rotation of the dolly wheel. When the rotation of the dolly wheel spindle is thus restrained, the steering control system can effectuate direct steering control of the dolly wheels to provide precise directional control. When the control indicates the normal dolly wheel capability is desired, the restraining force applied to the dolly wheel spindle by the coupling device is relieved and the steering control system is overridden. The coupling device by its characteristics can provide varying resistance to free dolly wheel spindle rotation for restriction of dolly wheel shimmying and oscillation and where otherwise advantageous to reduce free rotation.
IPC 1-7
IPC 8 full level
B60B 33/00 (2006.01); B60B 33/02 (2006.01); B62D 5/04 (2006.01); B62D 7/02 (2006.01); B62D 7/08 (2006.01); B62K 5/08 (2006.01)
CPC (source: EP)
B60B 33/0005 (2013.01); B60B 33/0021 (2013.01); B60B 33/0039 (2013.01); B60B 33/0049 (2013.01); B60B 33/0057 (2013.01); B60B 33/0068 (2013.01); B60B 33/0073 (2013.01); B60B 33/025 (2013.01); B60B 33/026 (2013.01); B62D 5/0418 (2013.01); B62D 7/02 (2013.01); B62D 7/08 (2013.01); B62K 5/007 (2013.01); B62K 5/08 (2013.01); B62B 2301/046 (2013.01); B62B 2301/0463 (2013.01)
Citation (search report)
- [A] US 6302421 B1 20011016 - LEE AARON [US]
- [A] US 4667365 A 19870526 - MARTINEK NORMAN A [US]
- [A] US 2367993 A 19450123 - JOSEPH BISHOP ARTHUR ERNEST
- [A] US 2770832 A 19561120 - CLAUDE MARTIN
- See references of WO 03103365A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 03103365 A1 20031218; AU 2003239908 A1 20031222; AU 2003239908 A8 20031222; AU 2003243323 A1 20031222; EP 1539505 A2 20050615; EP 1539505 A4 20070829; EP 1539557 A1 20050615; EP 1539557 A4 20080625; WO 03103986 A2 20031218; WO 03103986 A3 20040219
DOCDB simple family (application)
US 0316683 W 20030528; AU 2003239908 A 20030528; AU 2003243323 A 20030528; EP 03734216 A 20030528; EP 03757289 A 20030528; US 0316684 W 20030528