A whistle system that enables an official or other user to not only have the whistle in a secure position for quick and easy use while also enabling the user to be able to use both hands as well. In particular, the whistle system includes a fingergrip that allows the user to quickly move the the whistle in position for use in a natural motion, while allowing the fingergrip to then quickly separate from the whistle to allow both hands of the user to be utilized. Alternatively, the whistle allows individuals with restricted movement in one arm to still officiate. A user having restricted movement in one arm can simply wear the whistle on one hand, move it into position in the mouth to be blown, and then quickly separated from the whistle to allow the signal to be indicated with one hand. The whistle system includes a whistle with a fingergrip. The fingergrip is securely attached to the whistle by a securement system that also allows the fingergrip to be separated from the whistle with an application of force.

A toy building block robot and a main control box thereof are disclosed. The main control box comprises a toy building-block robot main control housing, a toy building-block robot main control board, and a battery. The toy building-block robot main control board is installed in the toy building-block robot main control housing. The battery is connected to the toy building-block robot main control board, so as to supply power to the toy building-block robot main control board. A plurality of connection mechanisms are disposed on the toy building-block robot main control housing for engaging the toy building-block robot main control housing with other components of the toy building block robot. In the present disclosure, whether the assembly of the components in the main control box, or the engagement between the main control box and other components of the toy building block robot, can both be realized through a connection mechanism.

A toy building block robot and a main control box thereof are disclosed. The main control box comprises a toy building-block robot main control housing, a toy building-block robot main control board, and a battery. The toy building-block robot main control board is installed in the toy building-block robot main control housing. The battery is connected to the toy building-block robot main control board, so as to supply power to the toy building-block robot main control board. A plurality of connection mechanisms are disposed on the toy building-block robot main control housing for engaging the toy building-block robot main control housing with other components of the toy building block robot. In the present disclosure, whether the assembly of the components in the main control box, or the engagement between the main control box and other components of the toy building block robot, can both be realized through a connection mechanism.

A cost effective, structural building set, suitable as a toy, uses post connectors (10) comprised of a post (12) with attached disks (14), or similar devices that insert into cutouts (31) in geometric shaped component parts (30, 80, 180). More than one component part can be connected to the same post connector, and such component parts can rotate relative to the post axis. The connector design allows construction of stable structures of many sizes, shapes, and types, and readily facilitates hinging between different sections of such assembled structures.

A cost effective, structural building set, suitable as a toy, uses post connectors (10) comprised of a post (12) with attached disks (14), or similar devices that insert into cutouts (31) in geometric shaped component parts (30, 80, 180). More than one component part can be connected to the same post connector, and such component parts can rotate relative to the post axis. The connector design allows construction of stable structures of many sizes, shapes, and types, and readily facilitates hinging between different sections of such assembled structures.

The present invention is a spinner device adapted for use as a toy or amusement device and in relieving stress. The spinner device preferably includes a plurality of radially extending arms, each arm having a magnetic mass therein and being magnetically mass adjustable. The spinner device preferably includes a magnetically attachable and detachable base device that allows the spinner device to function as a top. The spinner device further preferably includes a magnetically attachable and detachable display stand device that allows the spinner device to be rotated or spun while being displayed.

The present invention is a spinner device adapted for use as a toy or amusement device and in relieving stress. The spinner device preferably includes a plurality of radially extending arms, each arm having a magnetic mass therein and being magnetically mass adjustable. The spinner device preferably includes a magnetically attachable and detachable base device that allows the spinner device to function as a top. The spinner device further preferably includes a magnetically attachable and detachable display stand device that allows the spinner device to be rotated or spun while being displayed.

A self-propelled device includes a spherical housing and an internal drive system. The self-propelled device can further include an internal structure having a magnet holder that holds a first set of magnets and an external accessory comprising a second set of magnets to magnetically interact, through the spherical housing, with the first set magnets.

A self-propelled device includes a spherical housing and an internal drive system. The self-propelled device can further include an internal structure having a magnet holder that holds a first set of magnets and an external accessory comprising a second set of magnets to magnetically interact, through the spherical housing, with the first set magnets.

The invention relates to the utilization of magnetism in the roll stabilization and suspension of a radio-controlled car. In small radio-controlled vehicles, in particular, it is difficult to implement the conventional mechanical roll stabilization and a well-functioning suspension due to the small size, the accuracy required, dirt, and the loads exerted on the structures. In the structure according to the invention, the roll stabilization and suspension are implemented by means of magnetism, according to FIG. 2. The magnets at the ends of supporting arms (6) attract each other, implementing the roll stabilization. Magnets (3) are installed under the supporting arm magnets, repelling them and providing suspension.