Precessional exercising device

Details Precessional exercising device Precessional exercising device

1984-12-07

1987-02-03

Hafer, Robert A.

Undertaking

74 5R, 272 67, 272143, A63B 2122

Patent

active

046405089

ABSTRACT:
A precessional exercising device utilizing a housing containing a spinning mass which forms the rotor of a motor for spinning the mass. The housing is coupled to a remote handle by a linkage permitting rotation of the handle about two mutually orthogonal axes. When the handle is rotated about one or both of said axes, the corresponding angular movements are transmitted to the spinning mass and its spin axis is rotated accordingly, causing the generation of precession torques which are coupled back to the handle via the linkage to produce an exercise effect when the handle is held so as to resist said torques.

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patent: 4261562 (1981-04-01), Flavell
Motor-Driven Bar Bell, Popular Mechanics, Feb. 1962, p. 136.

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