Door alarm toy
US4194461A · kind A · utility
9Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1978 |
| Grant date | Mar 25, 1980 |
| Priority date | — |
| Expiry date | Apr 19, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H5/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A door alarm toy comprising a whistle adapted to be sounded by air escaping from an inflated balloon; and a clip adapted for engagement between a door and its door frame to hang the toy with an inflated balloon pressed against the door to frictionally retain a twist in the balloon which prevents it from deflating. When the door is then opened, the toy drops, the balloon untwists and air escaping from the balloon sounds the whistle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.