US 11,986,710 B2
Golf irons with sealed undercut
Matt Daraskavich, Grapevine, TX (US); Brian J. Kammerer, Fort Worth, TX (US); and Michael Pinto, Fort Worth, TX (US)
Assigned to Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed by KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed on Jun. 15, 2021, as Appl. No. 17/348,632.
Application 17/348,632 is a continuation of application No. 16/718,628, filed on Dec. 18, 2019, granted, now 11,033,787.
Application 16/718,628 is a continuation of application No. 16/058,884, filed on Aug. 8, 2018, granted, now 10,561,910, issued on Feb. 18, 2020.
Application 16/058,884 is a continuation of application No. 14/708,709, filed on May 11, 2015, granted, now 10,071,291, issued on Sep. 11, 2018.
Prior Publication US 2021/0308538 A1, Oct. 7, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 53/04 (2015.01); A63B 60/54 (2015.01)
CPC A63B 53/0475 (2013.01) [A63B 53/0408 (2020.08); A63B 60/54 (2015.10)] 10 Claims
OG exemplary drawing
 
1. A golf club head comprising:
a body comprising a face, and a rear wall, wherein;
the rear wall is opposite the face;
a rear recess is defined where a portion of the rear wall is recessed into the body toward the face;
a first insert comprising a front surface, a rear surface, and a perimeter, wherein;
the first insert is received within the rear recess such that the front surface is in contact with the rear wall;
the rear surface is opposite the front surface;
the perimeter comprises a topline portion, a lower portion, and a toe-side portion;
a portion of the rear surface is recessed into the first insert towards the front surface, thereby defining an open cavity, wherein;
the topline portion, the lower portion, and the toe-side portion of the perimeter circumscribe the open cavity;
the first insert further comprises a reinforcing feature comprising a beam comprising a first end near the topline portion and a second end near the toe-side portion of the perimeter;
wherein the beam extends across the open cavity between the topline portion and the toe-side portion of the perimeter;
the first insert is formed from a first polymeric material;
wherein the first polymeric material has a hardness, measured on the Shore D scale, between 75 D to 90 D;
the body further comprises a sole, wherein the face, the sole, and the rear wall define an undercut volume;
the rear wall defines at an upper edge thereof a threshold surface defining an upper threshold of the undercut volume, and a sloped ledge adjoining the threshold surface and projecting at an obtuse angle from the threshold surface into the undercut volume;
the golf club head further comprises a second insert between a rear surface of the face and the sloped ledge of the rear wall within the undercut volume to thereby define a fluidly sealed empty cavity within the undercut volume; and
wherein the second insert includes a top surface and a sloped surface projecting at an obtuse angle from the top surface, the top surface of the second insert being seated against a bottom perimeter of the first insert, and the sloped surface being seated against the sloped ledge of the rear wall.