Archery bow having continually decreasing draw force during draw
US4227509A · kind A · utility
23Cited by
4References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1978 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Mar 15, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S124/90
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An archery bow having limbs of adjustable resilient force with the draw poundage force necessary to maintain the bowstring at full draw being substantially less than conventional compound bows and with the propelling force on the arrow increasing substantially uniformly from a minimum at full draw to a maximum at the point immediately preceding free arrow flight. The resilient limbs flex in a direction away from the archer and have pivotally mounted force multiplying mechanisms at their ends interconnected by non-yieldable cables to the bow handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.