Expandable arrow broadhead with spring biased sliding shaft and pointed tip
US7717814B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Jun 6, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B6/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An expandable arrow broadhead used for releasable attachment to one end of a hollow arrow shaft. The broadhead includes a rotating, sliding shaft with a spirally wound, scalloped grooved, pointed tip and tip base having two or more of cutting blades mounted thereon. A portion of the sliding shaft is slidably received inside a hollow collar attached to a sliding shaft housing. In a retracted position, the blades are held in a refracted position using a coil spring mounted in a collar bore in the sliding shaft housing and a blade catch extending outwardly from an inner edge of the cutting blades. When the pointed tip engages a target upon impact, the sliding shaft moves rearward sliding inside the hollow collar. As the sliding shaft moves rearward, the blades are released from the blade catch and the beveled cam surface engages a portion of the collar and moves the blades outwardly into an extended position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.