发明名称 |
Heavy duty polymeric spring member and combination of spring and castor construction |
摘要 |
A spring member comprises an annular polymeric structure 1 interrupted by gap 3 to define annular structure ends 4 provided with attachment adaptions, external at 8 and internal at 6. Thus wheel 12 journalled at 7 in extension 6 is resiliently mounted by virtue of the elasticity of the annular structure material. Proportions, dimensions and materials can be varied over a wide range of applications. A particularly valuable application of such a C-shape spring is in the provision of a resiliently mounted castor wheel with a resiliently mounted pilot wheel giving easy passage up over a door sill or the like.
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申请公布号 |
US4467496(A) |
申请公布日期 |
1984.08.28 |
申请号 |
US19810319395 |
申请日期 |
1981.11.09 |
申请人 |
WHEEL DEVELOPMENTS LIMITED |
发明人 |
GREGG, JOHN D. W. |
分类号 |
B60B33/04;B60G11/00;F16F1/02;F16F1/373;(IPC1-7):B60B33/00 |
主分类号 |
B60B33/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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