US 11,771,964 B2
Multi-material iron-type golf club head
Jeffrey J. Albertsen, Plano, TX (US); and Michael Scott Burnett, McKinney, TX (US)
Assigned to TAYLOR MADE GOLF COMPANY, INC., Carlsbad, CA (US)
Filed by Taylor Made Golf Company, Inc., Carlsbad, CA (US)
Filed on Jun. 6, 2022, as Appl. No. 17/832,942.
Application 17/832,942 is a continuation of application No. 17/101,021, filed on Nov. 23, 2020, granted, now 11,351,425.
Application 17/101,021 is a continuation of application No. 16/422,819, filed on May 24, 2019, granted, now 10,843,050, issued on Nov. 24, 2020.
Application 16/422,819 is a continuation of application No. 15/955,775, filed on Apr. 18, 2018, granted, now 10,300,350, issued on May 28, 2019.
Application 15/955,775 is a continuation of application No. 15/389,505, filed on Dec. 23, 2016, granted, now 9,950,222, issued on Apr. 24, 2018.
Application 15/389,505 is a continuation of application No. 14/873,477, filed on Oct. 2, 2015, granted, now 9,566,479, issued on Feb. 14, 2017.
Application 14/873,477 is a continuation of application No. 14/256,005, filed on Apr. 18, 2014, granted, now 9,168,428, issued on Oct. 27, 2015.
Application 14/256,005 is a continuation of application No. 13/949,586, filed on Jul. 24, 2013, granted, now 8,721,471, issued on May 13, 2014.
Application 13/949,586 is a continuation of application No. 13/543,921, filed on Jul. 9, 2012, granted, now 8,517,860, issued on Aug. 23, 2013.
Application 13/543,921 is a continuation of application No. 13/324,093, filed on Dec. 13, 2011, granted, now 8,241,143, issued on Aug. 14, 2012.
Application 13/324,093 is a continuation of application No. 12/791,025, filed on Jun. 1, 2010, granted, now 8,235,844, issued on Aug. 7, 2012.
Prior Publication US 2022/0305354 A1, Sep. 29, 2022
Int. Cl. A63B 53/04 (2015.01); A63B 60/00 (2015.01)
CPC A63B 53/0466 (2013.01) [A63B 53/04 (2013.01); A63B 53/047 (2013.01); A63B 60/00 (2015.10); A63B 53/0408 (2020.08); A63B 53/0412 (2020.08); A63B 53/0433 (2020.08); A63B 53/0437 (2020.08); A63B 53/0458 (2020.08)] 20 Claims
OG exemplary drawing
 
1. A multi-material iron-type golf club head comprising:
(i) a shell having a face positioned at a front portion where the golf club head impacts a golf ball, the face being opposite a rear portion and extending between a top portion and a sole, thereby defining a closed internal volume, wherein the golf club head includes at least two different materials including a first material and a second material, wherein the second material accounts for at least 80 grams;
(ii) the face has a face thickness that varies from a minimum face thickness to a maximum face thickness, a maximum characteristic time of at least 220 microseconds, and an engineered impact point, a face height, a top edge height, and a lower edge height, wherein the face has a blade length measured horizontally from an origin point toward a toe side of the golf club head to the most distant point on the golf club head in this direction, wherein the blade length includes a toe blade length section and a heel blade length section measured in the same direction as the blade length from the origin point to the engineered impact point;
(iii) a bore having a center that defines a shaft axis which intersects with a horizontal ground plane to define the origin point, wherein the bore is located at a heel side of the golf club head, and wherein the toe side of the golf club head is located opposite of the heel side; and
(iv) a center of gravity located:
(a) vertically from the origin point a distance Ycg, wherein a ratio of the Ycg distance to the top edge height is less than 0.40;
(b) horizontally from the origin point toward the toe side of the golf club head a distance Xcg; and
(c) a distance Zcg from the origin point toward the rear portion in a direction generally orthogonal to the vertical direction used to measure Ycg and generally orthogonal to the horizontal direction used to measure Xcg;
(d) a club moment arm from the center of gravity to the engineered impact point is less than 1.1″, wherein a ratio of the club moment arm to the heel blade length section is less than 0.9; and
(e) a transfer distance measured horizontally from the center of gravity to a vertical line extending from the origin point, wherein the transfer distance is at least 10% greater than the club moment arm, and a ratio of the club moment arm to the transfer distance is less than 0.75;
(v) wherein the engineered impact point is located:
(a) vertically toward the top portion from the origin point a distance Yeip, wherein 0.5″>(Yeip−Ycg)>−0.5″;
(b) horizontally from the origin point toward the toe side a distance Xeip that is generally parallel to the face and the ground plane, wherein 0.5″>(Xeip−Xcg)>−0.5″; and
(c) a distance Zeip from the origin point toward the face in a direction generally orthogonal to the vertical direction used to measure Ycg and generally orthogonal to the horizontal direction used to measure Xcg, wherein (Zeip+Zcg)<2.0″.