Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1978-06-12
1979-06-05
Lesmes, George F.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
138130, 138144, 156195, 428 35, 428367, 428377, 428902, A63B 5310, A63B 5312
Patent
active
041571819
ABSTRACT:
A novel structural member, such as a golf club shaft or other tapered tubular member, having an unusually high resistance to torsional deflection for given desired longitudinal deflections along with high strength and a center of gravity more favoring the tip-end is provided by a resin-bonded graphite fiber structure in which the fiber orientations in each layer of the multi-layer, composite structure are varied along the length of the shaft and in desired orientation relationships between layers to achieve the unique combination of properties.
This structural member is prepared by helically placing fiber yarns such as graphite onto a resin-coated, tapered steel mandrel by winding a series of high modulus graphite yarns in series of layers and progressively varying the rotational speed of the rings carrying the spools of the graphite fiber yarns in each layer as the mandrel is fed at a constant speed. The continuously varying rotational speeds of these rings and the wrapping angles to which the yarns are applied to the mandrel result in a unique structure achieved by optimizing the wrapping angles in each layer at desired progressive changes in fiber orientation different in each layer, and from layer to layer in the structure.
REFERENCES:
patent: 3998458 (1976-12-01), Inoue et al.
Fansteel Inc.
Lesmes George F.
Thibodeau P.
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