发明名称 |
Camera crane arm with balancing system |
摘要 |
A camera crane has a spring balancing system for better maintaining the crane arm in balance as the crane arm is raised and lowered a spring link is pivotally attached to a support frame on a pivot access. Spring posts are attached to the crane arm section. Springs extend from the spring link to the spring posts. As the crane arm is raised, the springs exert a counterbalancing force. The spring balancing system can be disengaged by removing a pin extending through the spring link into the support.
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申请公布号 |
US6345919(B1) |
申请公布日期 |
2002.02.12 |
申请号 |
US19990391034 |
申请日期 |
1999.09.07 |
申请人 |
CHAPMAN/LEONARD STUDIO EQUIPMENT |
发明人 |
CHAPMAN LEONARD T. |
分类号 |
B66F11/04;(IPC1-7):G03B17/00;F16M13/00 |
主分类号 |
B66F11/04 |
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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