发明名称 |
Finger and hand exerciser with tension adjuster |
摘要 |
A finger and hand exerciser includes a housing defining four chambers arranged side-by-side in parallel with one another. Each chamber receives a tension adjustment member, a plunger that is reciprocatingly slidable in the chamber, and a helically wound compression spring extending between the plunger and the tension adjustment member. Each tension adjustment member includes a knurled wheel which the user of the finger and hand exerciser may turn to decrease or increase the force the spring exerts on the plunger.
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申请公布号 |
US7967732(B2) |
申请公布日期 |
2011.06.28 |
申请号 |
US20090456386 |
申请日期 |
2009.06.16 |
申请人 |
D'ADDARIO & COMPANY, INC. |
发明人 |
D'ADDARIO JAMES;MAXIM ALEXANDRU |
分类号 |
A63B21/00 |
主分类号 |
A63B21/00 |
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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