Method of manufacturing a golf club head by plastic injection using inserts meltable core, and a golf club head manufactured by the method
First Claim
1. A method of manufacturing a golf club head, said method comprising:
- affixing at least one insert and a meltable core together to form an insert/core assembly, with at least a portion of said insert projecting from said meltable core, said meltable core having a first melting point;
immobilizing said insert/core assembly in a position in a mold to create a peripheral space between said insert/core assembly and interior walls of the mold;
injecting plastic material into said peripheral space to coat said insert/core assembly, thereby coating the entirety of said projecting portion of said insert and forming a peripheral shell of the golf club head constituted by a plurality of walls, wherein said forming a peripheral shell of the golf club head comprises forming an exterior coating over said insert, coated by said injecting of plastic material, to encase said insert within said peripheral shell, said plastic material having a second melting point, said first melting point of said meltable core being lower than said second melting point of said plastic material;
eliminating said meltable core to thereby create an inner cavity of said peripheral shell of the golf club head; and
retaining said coated insert as a component of the golf club head manufactured by the method.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of manufacturing a golf club head that includes a peripheral shell constituted by an assembly of walls obtained by injecting a plastic material forming an inner cavity enclosing at least one inner insert kept immobilized by a partial plastic material coating of the shell. Prior to the injection step of the shell, an assembly is placed and immobilized in the mold which is comprised of a meltable core made of a second material having a melting point that is lower than the melting point of the plastic material in the space left free between the walls of the mold and the assembly, so as to coat the meltable core and all or a part of the free portion of the insert. Finally, all or a portion of the meltable core is eliminated to enable an inner volume to be freed so as to form the inner cavity.
212 Citations
31 Claims
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1. A method of manufacturing a golf club head, said method comprising:
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affixing at least one insert and a meltable core together to form an insert/core assembly, with at least a portion of said insert projecting from said meltable core, said meltable core having a first melting point; immobilizing said insert/core assembly in a position in a mold to create a peripheral space between said insert/core assembly and interior walls of the mold; injecting plastic material into said peripheral space to coat said insert/core assembly, thereby coating the entirety of said projecting portion of said insert and forming a peripheral shell of the golf club head constituted by a plurality of walls, wherein said forming a peripheral shell of the golf club head comprises forming an exterior coating over said insert, coated by said injecting of plastic material, to encase said insert within said peripheral shell, said plastic material having a second melting point, said first melting point of said meltable core being lower than said second melting point of said plastic material; eliminating said meltable core to thereby create an inner cavity of said peripheral shell of the golf club head; and retaining said coated insert as a component of the golf club head manufactured by the method. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of manufacturing a golf club head, said method comprising:
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affixing at least one insert and a meltable core together to form an insert/core assembly, with at least a portion of said at least one insert projecting from said meltable core, said meltable core having a first melting point; immobilizing and confining the entirety of said insert/core assembly in a mold to create a peripheral space between said insert/core assembly and interior walls of the mold, whereby said at least one insert is spaced from and does not contact the interior walls of the mold; injecting plastic material into said peripheral space to coat said insert/core assembly, thereby coating at least a part of said projecting portion of said at least one insert and forming a peripheral shell of the golf club head constituted by a plurality of walls, said plastic material having a second melting point, said first melting point of said meltable core being lower than said second melting point of said plastic material; and eliminating said meltable core to thereby create an inner cavity of said peripheral shell of the golf club head. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification