Variable density golf club
US7815523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2004 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Jul 2, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2053/0491
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf club head having portions of varying density is disclosed and claimed. The club head includes a body with a recess in the back between the heel and toe and extending toward the sole. An insert that is configured to matingly correspond to the recess is positioned within the recess. The insert has a lower specific gravity than the club head body, biasing the club head mass toward the club head perimeter. The insert can form a muscle of the club head. The club head is forged, and the recess is formed by machining. After the insert is positioned within the recess, the club head-insert combination is subjected to additional forging and finishing steps. The present invention increases the club head moment of inertia and/or enlarges the club head sweet spot while retaining the golfer's ability to work the golf ball and shape the golf shot. The present invention can be used with forged, blade, and muscle back clubs, which have not heretofore been enhanced in these manners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.