Outdoor game dart
US4887822A · kind A · utility
8Cited by
6References
3Claims
0Family size
Inventor
Key dates
| Filing date | Dec 29, 1988 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | Dec 29, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B6/003
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A kind of lawn dart, including a rotatable flight portion and weighted material being located in the front end of head member, to enable dart being able to maintain a steady flight trajectory after having been thrusted, and to enable it being able to restore to vertical state immediately from any oblique position after falling to the ground. The front end of its head member has a sounding member comprising a vibration chamber and a vibration tongue which enables it to give off the sounds accompanied by the air flow having been vibrated following the flight to enhance a fun for playing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.