Patent ID: 11883724
Assignee: TAYLOR MADE GOLF COMPANY, INC.
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 0:
1. A clubhead for an iron-type golf club, the clubhead comprising:
a body having a heel portion, a toe portion, a top-line portion, a rear portion, a face portion, a sole portion extending rearwardly from a lower end of the face portion to a lower portion of the rear portion,
wherein a sole bar defines a rearward portion of the sole portion,
wherein a cavity is defined by a region of the body rearward of the face portion, forward of the rear portion, above the sole portion, and below the top-line portion,
wherein a lower undercut region is defined within the cavity rearward of the face portion, forward of the sole bar, and above the sole portion,
wherein a lower ledge extends above the sole bar to further define the lower undercut region,
wherein an upper undercut region is defined within the cavity rearward of the face portion, forward of an upper ledge and below the top-line portion, and
wherein the upper ledge extends below the top-line portion; and
a shim received at least in part by the upper ledge and the lower ledge, wherein the shim is separately formed from and affixed to the body, and the shim is configured to close an opening in the cavity and to enclose an internal cavity volume between 5 cc and 20 cc;
wherein the opening in the cavity is non-circular and has an area as projected onto the face portion of at least 800 mm2 and no more than 2500 mm2; and
wherein the clubhead has an external water-displaced clubhead volume of no more than 55 cc;
wherein a ratio of the internal cavity volume to the external water-displaced clubhead volume is between 0.1 and 0.4.