Underwater toy operated by chemically produced gas bubbles
US4122627A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Feb 25, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H23/10
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A toy including separable base and central portions defining a cavity therebetween and a cover portion pivotably mounted on the central portion. The cover portion has a concave surface positioned over an aperture communicating with the cavity when the cover portion is in a closed position. When a chemical which will produce gas bubbles in the presence of water is placed in the cavity and the toy is dropped into a container of water, the concave surface will trap gas escaping through the aperture under the cover portion until the buoyancy of the gas moves the cover portion to an open position, allowing the accumulated gas to escape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.