发明名称 |
SYSTEM FOR PROVIDING CYCLIC MOTION |
摘要 |
In one embodiment, a system for providing cyclic motion includes a magnetic drive having an electrically conductive coil defining a bore and a magnetic member movable through the bore. A control provides current to the coil and selectively reverses the direction of the current to move the magnetic member through the bore. In another embodiment, the system includes a counterbalance. The counterbalance includes a biasing member for reacting against a load applied to a support, and a lever arm coupled to the biasing member for varying a preload of the biasing member. In another embodiment, the magnetic drive and the counterbalance may be incorporated into an apparatus for reciprocating a person.
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申请公布号 |
US2008098521(A1) |
申请公布日期 |
2008.05.01 |
申请号 |
US20070877364 |
申请日期 |
2007.10.23 |
申请人 |
WESTERKAMP EDWARD;MEISER DANIEL |
发明人 |
WESTERKAMP EDWARD;MEISER DANIEL |
分类号 |
A47D9/02;F16F1/00;G05G1/04;H02K33/00 |
主分类号 |
A47D9/02 |
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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