Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
1996-06-18
1999-11-23
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing multilayer work or article
264221, 264258, 264317, 264DIG44, 156155, 156173, B29C 4500
Patent
active
059894814
ABSTRACT:
A golf club shaft manufacturing process for making a lightweight golf club shaft that is not uniformly tapered along its length by using standard table-rolling tools and equipment. The process consists generally of creating one or more hollow sleeves and securing them around the exterior of a mandrel, the sleeves having a length and an exterior shape equal to the desired dimensions of the non-tapered portions of the shaft. Graphite flags are then rolled around the mandrel and sleeve, shrink tape is applied and the entire assembly is placed in a curing oven to cure the graphite shaft. The curing temperature is less than the melting point of either the mandrel or sleeve. Once the shaft has been cured, the shrink tape is removed and the mandrel is extracted. The remaining shaft and sleeve assembly is heated to a temperature greater than the melting point of the sleeve material so that the sleeve is liquefied and can be poured out of the shaft. The cured shaft can then be cut, sanded and finished as desired.
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Meeker Donald W.
Silbaugh Jan H.
Staicovici Stefan
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