# US 10,245,523 B2 · Magnetic building block

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- Number: US 10,245,523 B2
- Document ID: US10245523B2
- Status: Granted
- Kind: B2
- Application number: 15/650,326
- Filed: 2017-07-14
- Published: 2018-11-22
- Granted: 2019-04-02
- Earliest claimed: 2017-05-17
- Assignees: Shantou Xinbida Early Education Technology Co., Ltd.
- Applicants: Shantou Xinbida Early Education Technology Co., Ltd.
- Inventors: Yiqun Lin
- Web page: https://patentgrep.com/patent/US10245523B2

## CPC

- A63H 33/046: {comprising magnetic interaction means, e.g. holding together by magnetic attraction}
- A63H 33/06: to be assembled without the use of additional elements
- A63H 33/26: Magnetic or electric toys (electric drives A63H29/22 {; indoor games played with small balls using magnetic power A63F7/0088, A63F7/068})
- A63H: TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS

## Abstract

The present utility model provides a magnetic building block. A building block back side is installed on a rear end of a building block front side. Four notches are formed on both of the rear end of the building block front side and a front end of the building block back side. Four protruding chucks are formed on both of the rear end of the building block front side rear end and the front end of the building block back side. Four small magnets are disposed on the front end of the building block back side. The protruding chuck and the notch are disposed on two sides of the small magnet. An embedded paper is disposed between the building block front side and the building block back side. The embedded paper is inlaid in a rectangle surrounded by the notch, the small magnet, and the protruding chuck.

## Claims

### Claim 1

A magnetic building block, comprising:
a building block front side having a center opening;
a building block back side installed on a rear end of the building block front side and having a center opening;
four notches formed on both of the rear end of the building block front side and a front end of the building block back side;
four small magnets disposed on the front end of the building block back side;
four protruding chucks disposed on both of the rear end of the building block front side and the front end of the building block back side;
an embedded paper disposed between the building block front side and the building block back side and surrounded by the notches, the small magnets and the protruding chucks;
reinforcing ribs distributed on inner walls of the building block front side and the building block back side; and
a silicone protective ring located on outer side faces of the building block front side and the building block back side,
wherein the protruding chucks and the notches on each of the front and back sides are installed such that the front and back sides each provide a protruding chuck and a notch positioned on opposite sides of each of the four small magnets, and
wherein the embedded paper has a shape conforming to a shape of the building block front side and the building block back side and has a center opening aligned with the center opening of the building block front side and the center opening of the building block back side.

### Claim 2 (depends on 1)

The magnetic building block according to claim 1, wherein the building block front side and the building block back side have the same structure.

### Claim 3 (depends on 1)

The magnetic building block according to claim 1, wherein the building block front side is square.

### Claim 4 (depends on 1)

The magnetic building block according to claim 1, further comprising a plurality of grooves formed on the rear end of the building block front side
wherein each of the small magnets is installed in a respective one of the plurality of grooves.

### Claim 5 (depends on 1)

The magnetic building block according to claim 1, wherein the building block front side and the building block back side are engaged using the notches and the protruding chucks.

### Claim 6 (depends on 1)

The magnetic building block according to claim 1, wherein edges and corners of the building block front side and the building block back side are chamfered.

### Claim 7 (depends on 1)

The magnetic building block according to claim 1, wherein skidproof stripes are distributed on an outer side face of the silicone protective ring.

### Claim 8 (depends on 1)

The magnetic building block according to claim 1, wherein different patterns are distributed on the embedded paper.

### Claim 9 (depends on 1)

The magnetic building block according to claim 1, wherein the embedded paper comprises cutouts for receiving the small magnets, the notches and the protruding chucks.