Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1977-11-07
1980-03-11
Apley, Richard J.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
A63B 4910
Patent
active
041925050
ABSTRACT:
A game racket frame such as a tennis racket frame having controlled stiffness properties and light weight making it possible to selectively add weight to the racket at the region in which such weight will do the most good, namely, along the transverse axis of the stringing area. The racket frame itself comprises an integral structure including a head portion, a throat portion and a handle portion, the structure being composed of high modulus fibers such as graphite, glass, boron or the like, in a matrix of a synthetic resin. The frame has a non-uniform cross-sectional configuration and a taper whereby the thickness of the handle portion is greater than the thickness in the head portion, and the thickness of the throat is intermediate that of the handle portion and the head portion. The frame is such as to provide a tapered beam with the greatest area moment of inertia where the bending moments are highest. A tennis racket utilizing the improved frame has an improved coefficient of restitution at high velocity impact, improved ball rebound characteristics for off-center hits and relatively low vibration transmissibility.
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patent: 3941380 (1976-03-01), Lacoste
Dempsey Douglas E.
Tabickman Maurice L.
Apley Richard J.
PepsiCo Inc.
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