Arrow with nock and head alignment
US9829292B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2016 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Oct 3, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B6/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An arrow with a non-circular central bore may allow for differential flexural rigidity in the shaft. A non-circular central bore, such as in the form of a bore with a rounded polygon, or more specifically a reuleaux triangle, may also provide self-alighting features when paired with a nock or arrowhead with similar shaped elements. This may allow a user to properly nock an arrow without resorting to manual alignment of the nock and fletchings. The central bore may extend along an entirety of the shaft, or only along a portion of the shaft. The non-circular central bore may be incorporated in an arrow shaft with a round exterior cross section, or with an arrow with a non-circular exterior cross section, such as in the form of a rounded polygon, or more specifically a reuleaux triangle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.