A gyroscope includes a frame that surrounds a wheel and a weight that is connected to the wheel. A pair of wheel axles extend from the wheel and connect the wheel to the frame so that the wheel may rotate with respect to the frame. The frame also includes end pivot frames that provide a mounting point for end pivots to be removably attached to the frame. A zip cord may interact with a starting gear on one of the wheel axles to cause rotation of the wheel with respect to the frame.

An upper part includes an upward facing surface and a rod-shaped shaft being vertically movable. A lower part includes a downward facing surface and a tubular shaft in which the rod-shaped shaft is inserted. The upper part is relatively rotatable against the lower part and being detachably attached to the lower part. A lower tip is configured to protrude from a lower end of the tubular shaft when the upper part is attached to the lower part and when the lower tip is in no contact with a floor. The lower tip is accommodated in the tubular shaft when the upper part is attached to the lower part and when the lower tip is in contact with the floor. A second engaging part is configured to restrict a relative rotation between the upper part and the lower part when the lower tip is in no contact with the floor.

An upper part includes an upward facing surface and a rod-shaped shaft being vertically movable. A lower part includes a downward facing surface and a tubular shaft in which the rod-shaped shaft is inserted. The upper part is relatively rotatable against the lower part and being detachably attached to the lower part. A lower tip is configured to protrude from a lower end of the tubular shaft when the upper part is attached to the lower part and when the lower tip is in no contact with a floor. The lower tip is accommodated in the tubular shaft when the upper part is attached to the lower part and when the lower tip is in contact with the floor. A second engaging part is configured to restrict a relative rotation between the upper part and the lower part when the lower tip is in no contact with the floor.

A spinning top toy includes a braking member, a shaft part which is configured to be rotated, and a body which is detachably attached to the shaft part. The body is configured to be detached from the shaft part by being rotated with respect to the shaft part. When an impact is applied to the body, the braking member is configured on one of the shaft part and the body and is movable by a centrifugal force. When urged by the centrifugal force, the braking member is configured to become in contact with the other of the shaft part and the body.

A toy assembly having a body symmetrically balanced around a first axis. The body has wheels upon which the body can roll. A flywheel is disposed within the body that rotates about the first axis in a plane that is perpendicular to said first axis. The flywheel preserves angular momentum. At least one gear is provided within the body that transfers rotational energy between the flywheel and at least one of the wheels. The toy assembly can roll as a vehicle or spin as a top depending on whether it is placed on a flat surface or balanced on a salient point.

A toy assembly having a body symmetrically balanced around a first axis. The body has wheels upon which the body can roll. A flywheel is disposed within the body that rotates about the first axis in a plane that is perpendicular to said first axis. The flywheel preserves angular momentum. At least one gear is provided within the body that transfers rotational energy between the flywheel and at least one of the wheels. The toy assembly can roll as a vehicle or spin as a top depending on whether it is placed on a flat surface or balanced on a salient point.

An adaptor for stacking spinner assemblies is disclosed. The adaptor comprises a first section, where the first section has a cylindrical outer surface defined by a radius R1. The adaptor further comprises a second section opposite the first section, where the second section has a cylindrical outer surface defined by a radius R1 and is aligned substantially concentrically with the first section. The first section is configured to extend into a bore of a first spinner assembly bearing and the second section is configured to extend into a bore of a second spinner assembly bearing. A stackable spinner assembly is also disclosed that comprises a bearing, a body, and an adaptor.

An adaptor for stacking spinner assemblies is disclosed. The adaptor comprises a first section, where the first section has a cylindrical outer surface defined by a radius R1. The adaptor further comprises a second section opposite the first section, where the second section has a cylindrical outer surface defined by a radius R1 and is aligned substantially concentrically with the first section. The first section is configured to extend into a bore of a first spinner assembly bearing and the second section is configured to extend into a bore of a second spinner assembly bearing. A stackable spinner assembly is also disclosed that comprises a bearing, a body, and an adaptor.

A combined toy top comprises an upper top and a bottom top that are assembled together. The upper top and the bottom top both comprise a central axis body and a top ring fitting over the central axis body. The direction in which the top ring is installed on the central axis body can be turned over between a top face and a bottom face and, therefore, a combined toy top with a variety of assembly ways may be achieved by turning the direction of the top ring on the central axis body. As a result, more powerful attacks and a higher victory rate during games can be realized. Furthermore, a user may form tops of various shapes and centers of gravity by turning the direction of the top ring on the central axis body for adaption to different games and attacks.

A combined toy top comprises an upper top and a bottom top that are assembled together. The upper top and the bottom top both comprise a central axis body and a top ring fitting over the central axis body. The direction in which the top ring is installed on the central axis body can be turned over between a top face and a bottom face and, therefore, a combined toy top with a variety of assembly ways may be achieved by turning the direction of the top ring on the central axis body. As a result, more powerful attacks and a higher victory rate during games can be realized. Furthermore, a user may form tops of various shapes and centers of gravity by turning the direction of the top ring on the central axis body for adaption to different games and attacks.