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US 4,070,019 AGranted
Laminated game rackets and method of constructing same
AssigneeGroves-Kelco Sales, Inc.
InventorsCharles L. Segal, Michael G. Anderson, David N. Vincent
Life of this patent
Estimating the term…
Abstract
A laminated game racket frame having a closed hoop-shaped inner frame and an outer frame with the outer part of the inner frame integrally bonded to the inner part of the outer frame to form a unitized body, each frame being formed as a laminate comprised of a plurality of strips. Some of these strips are made of wood, thermoplastic resin or metal, and some are made as laminates themselves from plies of reinforced thermosetting resins.
Claims33
A game racket frame comprising:
- an outer frame including
- a shaft portion,
- a throat portion in the form of two outwardly curving throat members, each integrally formed with the top of said shaft portion,
- a head portion in the form of a curvilinear rim member having two portions at the bottom thereof, each portion integrally formed with the top of one of said throat members, and
- a handle coupled to the bottom of said shaft portion;
- and
- an inner frame formed of a closed inner hoop member;
- said inner hoop member being formed as a laminate,
- said outer frame being formed as a laminate, and
- means for bonding said inner hoop member and said outer frame together to form a unitized body,
- said inner hoop member laminate comprising a plurality of adhesively bonded, distinct strips of material, said strips being arranged perpendicular to the faces of said racket, at least one of said strips comprising a preformed, precured strip of fiber reinforced thermosetting resin,
- said outer frame laminate comprising a plurality of adhesively bonded, distinct strips of material, said strips being arranged perpendicular to the faces of said racket, at least one of said strips comprising a preformed, precured strip of fiber reinforced thermosetting resin.
9 more elements
A game racket frame comprising:
- a shaft portion;
- a throat portion;
- a head portion in the form of a curvilinear rim member having two portions at the bottom thereof, said portions being integral with the top of said throat portion;
- a handle coupled to the bottom of said shaft portion;
- and
- support means, coupled at least to said throat portion, for reinforcing said frame,
- said head portion comprising a plurality of adhesively bonded, distinct strips of material, said strips being arranged perpendicular to the faces of said racket, at least one of said strips comprising preformed, precured fiber reinforced thermosetting resin.
4 more elements
Dependencies are inferred from the claim text.