Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1989-06-13
1991-11-05
Coven, Edward M.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
273 80B, A63B 5312
Patent
active
RE0337358
ABSTRACT:
A shaft for a golf club includes a first series of step portions, with the step portions increasing in diameter along the shaft from a tip or hosel end of the shaft toward a grip end. The step portions are separated from adjacent step portions by transitional portions which consist of a relatively gentle taper which smoothly link the surfaces of one step portion with another. A second series of step portions is disposed between the first series of step portions and the grip end of the shaft, with the diameter of the step portions increasing by a predetermined amount from the first series of step portions toward the grip end. The second series of step portions are separated from adjacent step portions and from the grip end further transitional portions which are similar to the transitional portions discussed above. The golf shaft of the present invention has reduced stress concentration points along the circumferential axis of the shaft, a smoother line of dynamic deflection and a unique finished product appearance.
REFERENCES:
patent: 1670530 (1928-05-01), Cowdery
patent: 1670531 (1928-05-01), Cowdery
patent: 1765709 (1930-06-01), Withington
patent: 1974389 (1934-09-01), Cowdery
patent: 1983074 (1934-12-01), Durell
patent: 1994069 (1935-03-01), Fletcher
patent: 3871649 (1975-03-01), Kilshaw
patent: 4165874 (1979-08-01), Lezatte et al.
patent: 4169595 (1979-10-01), Kaugars
Rumble Joseph W.
Sprague William G.
Brunswick Corporation
Coven Edward M.
Passaniti Sebastiano
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