CPC Main Group
A63B 21/00 Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices (electric or electronic controls therefor A63B24/00)
20 direct subcodes
Child Classifications
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- A63B 21/002 isometric or isokinetic, i.e. substantial force variation without substantial muscle motion
- A63B 21/005 using electromagnetic or electric force-resisters
- A63B 21/008 using hydraulic or pneumatic force-resisters
- A63B 21/012 using frictional force-resisters
- A63B 21/02 using resilient force-resisters
- A63B 21/06 User-manipulated weights
- A63B 21/16 Supports for anchoring force-resisters
- A63B 21/22 Resisting devices with rotary bodies
- A63B 21/28 Devices for two persons operating in opposition