# US 2014/0155236 A1 · Rotation exercise apparatus

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- Number: US 2014/0155236 A1
- Document ID: US20140155236A1
- Status: Published application
- Kind: A1
- Application number: 13/705,868
- Filed: 2012-12-05
- Published: 2014-06-05
- Earliest claimed: 2012-12-05
- Inventors: Michael Curry
- Web page: https://patentgrep.com/patent/US20140155236A1

## CPC

- A63B 26/003: {for improving balance or equilibrium (balance beams A63B4/00; apparatus for rope dancing A63B7/08; balancing drums, balancing boards or the like A63B22/16)}
- A63B 21/023: {Wound springs}
- A63B 22/14: Platforms for reciprocating rotating motion about a vertical axis {, e.g. axis through the middle of the platform}
- A63B 22/18: with elements, {i.e. platforms,} having a circulating, {nutating} or rotating movement, generated by oscillating movement of the user, {e.g. platforms wobbling on a centrally arranged spherical support}(hoop exercising apparatus A63B19/00; {eccentric weights put into orbital motion by nutating movement of the user A63B21/0608; pots rotating or rocking by moving the whole body A63G23/00})
- A63B 23/04: for lower limbs {(training appliances for special sports A63B69/00; for the purpose of producing mechanical power F03G5/00)}
- A63B 69/0093: {for surfing, i.e. without a sail; for skate or snow boarding}
- A63B 2214/00: Training methods
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

An exercise apparatus (14) includes an upper plate (20) on which a person can stand, a lower plate (22) lying under the upper plate, and a low friction rotation bearing (24) between the plates. This rotation exercise device allows a person to stand on the upper plate and move his/her arms and legs to create torque that pivots the upper plate clockwise and counter clockwise The apparatus also can include a tilting device (26) that allows the person to tilt a top plate, which lies over the upper plate, so the top plate tilts about horizontal axes to simulate controlling tilt of a skateboard or surfboard white steering it.

## Claims

### Claim 1

An exercise apparatus, comprising:
a top plate on which a person can stand;
a lower plate lying under said top plate;
a low friction bearing rotatably supporting said top plate on said lower plate about a vertical axis, said bearing having sufficient carrying capacity to support a person that has a weight of over 200 pounds, in repeated opposite rotations, whereby to enable a person to exercise by twisting clockwise and counter-clockwise.

### Claim 2 (depends on 1)

The apparatus described in claim 1 wherein:
said top plate has a horizontal width and a horizontal length wherein at least one is at least 20 inches long, whereby to enable the person standing on the top plate to stand with his/her feet spread apart for stability.

### Claim 3 (depends on 1)

The apparatus described in claim 1 including:
a middle plate that lies vertically between said top and lower plates; and
a plurality of vertically compressible coil springs (32) that each lies between said top and middle plates (30, 20) and that supports said top plate on said middle plate, said springs each having a diameter of about 3 inches, and said springs being horizontally spaced apart with their axes (34) lying within an axis circle (41) of about 10 inches diameter, whereby to cause the person to exercise muscles to limit tilt while exercising leg muscles to pivot the top plate clockwise and counter-clockwise.

### Claim 4 (depends on 3)

The exercise device described in claim 3 wherein:
said springs comprise 4 coil springs having vertical coil axes (34) lying on the corners of an imaginary square (36), said vertical axes being uniformly spaced about said axis circle.

### Claim 5

A method for a person to exercise his legs and hips, comprising:
standing on a top board (30) while the top board is supported in pivoting about a vertical axes on a bottom board (22);
turning by lees than 360°, the person's upper body in repeated clockwise and counterclockwise directions about said vertical axis, to cause said top board to turn in opposite directions.