Iron-type golf clubhead
US5738596A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Feb 12, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B53/0458
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An iron-type golf clubhead includes a blade, a hosel, and a junction. The blade includes a rearwardly facing blade cavity, and the junction includes a rearwardly facing junction cavity that is coextensive with the blade cavity. A graduated weight pad is located within the blade cavity and preferably has a height, in a direction perpendicular to the blade face, that varies in a toe-to-heel direction, and which may also vary from the top to the bottom of the club. The junction cavity may also include a negative weight cutout that extends below the junction cavity floor and that represents a continuation of the profile of the weight pad, in effect forming a negative weight pad. The junction cavity and weight pad act to move the center of gravity outwardly toward the toe, and also to increase the sweet spot on the outer, toe portion of the clubhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.