Illuminated sports projectile
US4989881A · kind A · utility
44Cited by
12References
1Claims
0Family size
Inventor
Key dates
| Filing date | Feb 28, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Feb 28, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/74
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A dart has a barrel with a compartment having an LED therein, a tail and a point section at opposite ends of the barrel. One of the tail and point sections is detachable fromn the body and defines a recess with a battery therein. A first pair of contacts on the barrel are connected to the LED by a pair of wires, and a second set of contacts in the recess connect with the first pair when the sections and barrel are assembled to activate the LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.