System for providing cyclic motion

Details System for providing cyclic motion System for providing cyclic motion

2011-06-14

2011-06-14

Santos, Robert G (Department: 3673)

Beds

Cradles

Rocker base

C005S108000, C005S109000

Reexamination Certificate

active

07958579

ABSTRACT:
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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