Metal wood club with improved hitting face
US7029403B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Oct 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02854
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A golf club head having selectively oriented zones of relatively high flexural stiffness is disclosed. The hitting face is configured and dimensioned so that it includes an inner zone and a concentric intermediate zone. The inner zone has relatively high flexural stiffness and the intermediate zone has relatively lower flexural stiffness. The inner zone may have an elliptical shape or a substantially parallelogram shape. Preferably, the inner zone has a shape that comprises a major axis and a minor axis and the major axis aligns substantially in the direction of high heel to low toe. This arrangement of inner and intermediate zones creates a gradient of flexural stiffness in the direction of high toe to low heel and produces a desirable manipulation COR in that direction. This area of high coefficient of restitution advantageously coincides with the ball impact pattern that golfers typically make on the hitting face. The hitting face also comprises a measurement zone wherein the lowest COR is at least 93% of the highest COR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.