Accelerating arrow
US4900037A · kind A · utility
21Cited by
3References
6Claims
0Family size
Inventor
Key dates
| Filing date | May 8, 1986 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | May 8, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B6/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved arrow is set forth. In the preferred and illustrated embodiment, the arrow nock is formed at the back end of a telescoping hollow tubular portion. It is received within a cooperative telescoping tubular portion which comprises the shaft of the arrow. A compressible coil spring is placed in the two telescoping portions. On release of the arrow from a bow string, the coil spring is compressed. Before release is completed, the spring absorbs recoil and the arrow is restored to full length. This speeds up the arrow and reduces drop during trajectory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.