# US 2019/0168087 A1 · Multi-material golf club head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168087 A1 - Document ID: US20190168087A1 - Status: Published application - Kind: A1 - Application number: 15/926,565 - Filed: 2018-03-20 - Published: 2019-06-06 - Earliest claimed: 2017-12-06 - Assignees: Acushnet Company - Applicants: Acushnet Company - Inventors: Grant M. Martens; Uday V. Deshmukh - Web page: https://patentgrep.com/patent/US20190168087A1 ## CPC - A63B 53/0475: {with one or more enclosed cavities} - A63B 53/0466: {wood-type} - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/0429: {the face insert comprising two or more layers of material} - A63B 53/0437: {with special crown configurations} - A63B 53/0454: {Strengthening ribs on the rear surface of the impact face plate} - A63B 2053/0491: {with added weights, e.g. changeable, replaceable} - A63B 2209/02: with reinforcing fibres, e.g. carbon, polyamide fibres - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A multi-material type golf club head is disclosed. More specifically, the golf club head in accordance with the present invention may have a metallic portion and a lightweight portion, wherein the entirety of the striking face is made out of a metallic material while a majority of the chassis is made out of a lightweight material that serves to reduce the overall weight of the golf club head. The lightweight material, in addition to reducing the overall weight of the golf club head, may be comprised of an interior face support to at least partially support the metallic striking face portion to improve the performance and feel of the golf club head. ## Claims ### Claim 1 A metalwood golf club head comprising: a metallic portion further comprising a hosel, a sole portion, and a striking face, wherein said metallic portion creates an opening near a top crown portion of said metallic portion that extends into a heel portion of said metalwood golf club head, a lightweight portion further comprising an internal crown support, an internal sole support, and an internal face support, wherein said lightweight portion slidably engages said opening near said top crown portion of said metallic portion, wherein said metallic portion conceals said internal face support and said sole support, and wherein said internal face support contacts a rear surface of said striking face. ### Claim 2 (depends on 1) The metalwood golf club head of claim 1, wherein said striking face has a thickness of between about 1.0 mm and about 1.5 mm, and said internal face support has a thickness of between 0.8 mm and about 1.2 mm. ### Claim 3 (depends on 2) The metalwood golf club head of claim 2, wherein said striking face has a thickness of between about 1.1 mm and about 1.4 mm, and said internal face support has a thickness of between about 0.9 mm and about 1.1 mm. ### Claim 4 (depends on 3) The metalwood golf club head of claim 3, wherein said striking face has a thickness of between about 1.2 mm and about 1.4 mm, and said internal face support has a thickness of about 1.0 mm. ### Claim 5 (depends on 2) The metalwood golf club head of claim 2, further comprising a crown cover, concealing said lightweight portion. ### Claim 6 (depends on 2) The metalwood golf club head of claim 2, wherein said lightweight portion further comprises a heel cavity adapted to receive a heel weight, and a toe cavity adapted to receive a toe weight. ### Claim 7 (depends on 6) The metalwood golf club head of claim 6, further comprising a heel weight located within said heel cavity, and a toe weight located within said toe cavity. ### Claim 8 (depends on 2) The metalwood golf club head of claim 2, wherein said metallic portion is made out of a steel material having a density greater than about 7.0 g/cc and said lightweight portion is made out of a composite type material having a density less than about 3.0 g/cc. ### Claim 9 (depends on 8) The metalwood golf club head of claim 8, wherein said metallic portion is made out of a steel material having a density greater than about 7.3 g/cc and said lightweight portion is made out of a composite type material having a density less than about 2.5 g/cc. ### Claim 10 (depends on 9) The metalwood golf club head of claim 9, wherein said metallic portion is made out of a steel material having a density greater than about 7.6 g/cc and said lightweight portion is made out of a composite type material having a density less than about 2.0 g/cc. ### Claim 11 (depends on 8) The metalwood golf club head of claim 8, wherein said metalwood golf club head is a hybrid type golf club head having a loft of greater than about 17.5 degrees, and wherein said metalwood golf club head has a moment of inertia greater than about 235 kg−mm2. ### Claim 12 (depends on 11) The metalwood golf club head of claim 11, wherein said metalwood golf club head has a moment of inertia greater than about 245 kg−mm2. ### Claim 13 (depends on 12) The metalwood golf club head of claim 12, wherein said metalwood golf club head has a moment of inertia greater than about 255 kg−mm2. ### Claim 14 A hybrid metalwood golf club head comprising: a metallic portion further comprising a hosel, a sole portion, and a striking face, wherein said metallic portion creates an opening near a top crown portion of said metallic portion that extends into a heel portion of said metalwood golf club head, a lightweight portion further comprising an internal crown support, an internal sole support, and an internal face support, wherein said lightweight portion slidably engages said opening near said top crown portion of said metallic portion, wherein said hybrid metalwood golf club head has a loft of greater than 17.5 degrees, wherein said hybrid metalwood golf club head has a moment of inertia greater than about 235 kg−mm2, wherein said metallic portion conceals said internal face support and said sole support, and wherein said internal face support contacts a rear surface of said striking face. ### Claim 15 (depends on 14) The hybrid metalwood golf club head of claim 14, wherein said metalwood golf club head has a moment of inertia greater than about 245 kg−mm2. ### Claim 16 (depends on 15) The hybrid metalwood golf club head of claim 15, wherein said metalwood golf club head has a moment of inertia greater than about 255 kg−mm2. ### Claim 17 (depends on 14) The hybrid metalwood golf club head of claim 14, wherein said lightweight portion further comprises a heel cavity adapted to receive a heel weight, and a toe cavity adapted to receive a toe weight, and wherein said hybrid metalwood golf club head further comprises a heel weight located within said heel cavity, and a toe weight located within said toe cavity. ### Claim 18 (depends on 17) The hybrid metalwood golf club head of claim 17, wherein said heel weight has a mass of greater than about 12 grams and said toe weight has a mass of greater than about 15 grams. ### Claim 19 (depends on 18) The hybrid metalwood golf club head of claim 18, wherein said heel weight has a mass of greater than about 15 grams and said toe weight has a mass of greater than about 18 grams. ### Claim 20 (depends on 19) The hybrid metalwood golf club head of claim 19, wherein said heel weight has a mass of greater than about 18 grams and said toe weight has a mass of greater than about 20 grams.