Golf club head and a method for producing the same
US5378295A · kind A · utility
26Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Mar 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/32
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In production of a shell-type golf club head made up of several different pieces, an iron-type material of a specified chemical composition and carbon equivalent is subjected to a combination of annealing before shaping with quenching after shaping. Exclusion of the conventional casting process in production much improves mechanical characteristics of the product and increase mechanical strength enables formation of a large size golf club head with an enlarged sweet spot. Limited and locally specified disposition of weld lines assures highly accurate lie and loft angles with reduced welding strain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.