Ball bouncing device
US3950890A · kind A · utility
4Cited by
1References
10Claims
0Family size
Inventor
Key dates
| Filing date | Apr 10, 1975 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Apr 10, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H5/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A novelty device for sustainingly bouncing an object such as a ball. The cone of a loud-speaker is covered by a taut elastic diaphragm against which the object is bounced. When the object strikes the diaphragm, the speaker produces a small electrical pulse which is amplified and returned to the speaker. The amplified pulse is thereby acoustically coupled to the diaphragm which is snapped to restore sufficient energy to the object to overcome frictional losses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.