Process of manufacturing tennis racket frames or the like

Details Process of manufacturing tennis racket frames or the like Process of manufacturing tennis racket frames or the like

1975-02-14

1976-01-06

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156191, 156194, 156228, 273 73F, B65C 326

Patent

active

039309207

ABSTRACT:
A process for manufacturing tennis racket frames including lining the contoured mold cavities of a mold with layers of predetermined oriented plastic strip material, encompassing elastic inflatable tubes in said mold cavities with superimposed layers or applications of unidirectionally and diagonally oriented prepreg material, positioning the tubes in the mold halves, inserting a hard foam member in the mold cavities in space bounded by each of the tubes, folding the first layers of prepreg material over the hard foam member, closing the mold halves, and polymerizing the prepreg material layers under heat and pressure so as to form a molded tennis racket frame.

REFERENCES:
patent: 2593714 (1952-04-01), Robinson
patent: 2878020 (1959-03-01), Robinson
patent: 3256125 (1966-06-01), Tyler
patent: 3755037 (1973-08-01), Erwin et al.

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