发明名称 Apparatus for exercising hands against constant force
摘要 A hand grip includes first and second grip members connected to each other at a pivot point for permitting said first and second grip members to be moved together and away from each other. The two hand grip members are connected together through a pawl and ratchet, friction disks and a spring so that they are moved toward each other against an adjustable friction force and spring returned.
申请公布号 US4869492(A) 申请公布日期 1989.09.26
申请号 US19880194898 申请日期 1988.05.17
申请人 JOUTRAS, FRANK 发明人 JOUTRAS, FRANK E.
分类号 A63B5/20;A63B23/16 主分类号 A63B5/20
代理机构 代理人
主权项
地址