Games using tangible projectile – Golf – Club or club support
Patent
1998-12-22
2000-10-17
Chapman, Jeanette
Games using tangible projectile
Golf
Club or club support
273DIG7, A63B 5310
Patent
active
061323233
ABSTRACT:
An improved shaft for a golf club and methods of manufacturing the same. A plurality of layers of composite fiber bound within a thermoset resin are bonded to one or more layers of composite fiber bound within a thermoplastic resin using a high peel strength nylon epoxy adhesive. Preferably, the layer(s) of composite fiber bound within the thermoplastic resin comprise the outermost layer of a golf club shaft.
In one preferred form, a plurality of plies of pre-preg composite sheet including a thermoset resin are wrapped around a mandrel and pre-cured. Thereafter, a layer of adhesive is wrapped over the pre-cured plies, at least one ply of pre-preg composite sheet including a thermoplastic resin is wrapped over the adhesive, and a cellophane or polypropylene tape is wrapped over the outermost layer of pre-preg. Thereafter, the ply wrapped mandrel is placed in a mold and heated to a predetermined temperature for a time sufficient to allow curing of all of the plies comprising the golf club shaft.
In an alternative form, the layer of fiber comprising the thermoplastic resin may be pre-cured and used as a shell during the curing process. Bladder molding is preferred in such embodiments.
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Murphy James M.
Reyes Herbert
Smith Brian S.
Blau Stephen L.
Callaway Golf Company
Catania Michael A.
Chapman Jeanette
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