Block toy with integral drive shaft
US4813903A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1988 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Mar 29, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/042
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A running toy having an integral and concealed transmission member permits easy construction of running toys having a desirable appearance. A block unit of the running toy includes a hollow cube or block having a concave portion for receiving other block units and a convex portion for coupling to other block units. The concealed transmission member is rotatably mounted within the hollow cube so as to permit successive block units to be connected, and top permit a drive force inputted to one end of a succession of block units, from a power unit and through a power transmission, to be output at another end of the succession of block units. The succession of blocks can be configured in any desired shape, such as a crane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.