Golf club head with improved striking face

A golf club head comprising:

• a striking face portion, located at a frontal portion of said golf club head, adapted to impact a golf ball;
• and
• a body portion, attached to a rear of said striking face portion,
• wherein said striking face portion further comprises;
• a frontal striking surface, wherein said frontal striking surface is substantially planar, and
• an internal rear surface,
• wherein said frontal striking surface and said internal rear surface combine to further comprise;
• a thickened central region having a first thickness,
• a central transition region, extending outward from said thickened central region, having a variable thickness, wherein said central transition region comprises:
• a toeward central transition region having a height H2-c,
• a heelward central transition region having a height H2-d,
• a thinned intermediate region, extending outward from said central transition region, having a third thickness, wherein said thinned intermediate region comprises:
• a toeward thinned intermediate region having a height H3-c,
• a heelward thinned intermediate region having a height H3-d,
• a thickened stress reducing region, extending outward from said thinned intermediate region, having a fourth thickness, and
• a thinned perimeter region, extending outward from said thickened stress reducing region, having a fifth thickness,
• wherein said thickened stress reducing region protrudes rearward from said internal rear surface of said striking face portion,
• wherein said height H2-c in addition to said height H3-c is smaller than said height H2-d in addition to said height H3-d
• wherein said fifth thickness is less said fourth thickness, and
• wherein said third thickness of said thinned intermediate region is a thinnest portion of said striking face portion.

A golf club head comprising:

• a striking face portion, located at a frontal portion of said golf club head, adapted to impact a golf ball;
• and
• a body portion, attached to a rear of said striking face portion,
• wherein said striking face portion further comprises;
• a frontal striking surface, wherein said frontal striking surface is substantially planar, and
• an internal rear surface,
• wherein said frontal striking surface and said internal rear surface combine to further comprise:
• a thickened central region having a first thickness,
• a central transition region, extending outward from said thickened central region, having a variable thickness, wherein said central transition region comprises:
• a toeward central transition region having a height H2-c,
• a heelward central transition region having a height H2-d,
• a thinned intermediate region, extending outward from said central transition region, having a third thickness, wherein said thinned intermediate region comprises:
• a toeward thinned intermediate region having a height H3-c,
• a heelward thinned intermediate region having a height H3-d,
• a thickened stress reducing region, extending outward from said central transition region and located proximate a perimeter of said striking face portion,
• wherein said thickened stress reducing region protrudes rearward from said internal rear surface of said striking face portion, and wherein said height H2-c in addition to said height H3-c is smaller than said height H2-d in addition to said height H3-d.