| 发明名称 |
Steerable and retractable wheels for multi-purpose carriage |
| 摘要 |
Wheel assemblies for attachment to a carriage or a vehicle. The wheel assemblies can be configured for four wheel steering, locked in predetermined directions, or free pivoting. The wheel assemblies further include an apparatus for retracting and extending the wheels of the carriage to support the carriage on fixed length supports.
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| 申请公布号 |
US6217044(B1) |
申请公布日期 |
2001.04.17 |
| 申请号 |
US19990292434 |
申请日期 |
1999.04.15 |
| 申请人 |
BEECHE SYSTEMS, CORP. |
发明人 |
BEECHE GREGORY L.;SCRAFFORD ROY |
| 分类号 |
B62D7/04;B62D7/15;B66C9/04;B66C23/20;B66C23/78;(IPC1-7):B60P3/40 |
主分类号 |
B62D7/04 |
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代理人 |
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