US 4,727,299 AGranted

Auto-rocking apparatus with non-fixed supporting points

OwnerKuo A. Liuinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

An apparatus comprising a rocker with a curved base, and an activating base supporting and continuously activating the rocker. Two magnets, whose north poles point in opposite directions, one upward and the other downward, are respectively disposed on either side, towards which rocker rocks, of the center of gravity of the curved base. A first induction coil is set within the activating base and under the rocker so as to produce induced a current when the rocker is rocking in the direction of one of the two magnets. An operational amplifier integrated circuit (OP AMP IC) is provided within the activating base so as to amplify the induced current. A second induction coil, which is connected to the output of the OP AMP IC, is provided so as to induce a magnetic field. This magnetic field applies an attractive force on the magnet when it moves closer to the activating base, and a repelling force on the other magnet moving away from the activating base so as to activate the rocking means.

Claims3

Dependent claims

An auto-rocking apparatus with non-fixed supporting points comprising:

(a) a rocking means with a curved rocking base for said rocking means to rock thereon;
said rocking means being provided on either side with two permanent magnets, said two permanent magnets being arranged in such a manner that a first north pole of one end thereof substantially points upwards and a second north pole of another end thereof substantially points downwards;
(b) a supporting means with a circular or an elliptical recess on a top face thereof for said rocking means to stably rock thereon with contact points therebetween non-fixed;
and
(c) electromagnetic activating means comprising an induction coil set disposed under said supporting means and consisting of a first induction coil and a second induction coil connecting to said first induction coil;
said first induction coil being coaxial with said second induction coil;
an operational amplifier integrated circuit wherein an output terminal thereof connects to one end of said second induction coil, and one of two input terminals thereof respectively connects to one common end of said second induction coil and said first induction coil, and another of the two input terminals thereof connects to another end of said first induction coil;
a resistor connecting to two input terminals of said operational amplifier integrated circuit;
and
power supplying means connecting to said integrated circuit.

7 more elements

Dependencies are inferred from the claim text.