Golf irons

Details Golf irons Golf irons

1988-05-13

1989-08-22

Marlo, George J.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273175, A63B 5300, A63B 5304

Patent

active

048589292

ABSTRACT:
There is disclosed a set of golf irons which have progressively decreasing displacements between the axis of the shaft and the center of mass projected to the horizontal plane beginning with the long irons and progressing to the short irons. Each iron in the set also has a support column behind the striking face, parabolic shaped horizontal grooves in the striking face with a top junction between the striking face and each groove, the top junction and groove sides defined by a segment of a parabola, the longest groove length in the striking face of each club proportional to the club displacement, and a flat segment on the sole.

REFERENCES:
patent: 1089881 (1914-03-01), Taylor
patent: 1617090 (1927-02-01), Worthington
patent: 1695598 (1928-12-01), MacClain
patent: 2332342 (1943-10-01), Reach
patent: 2447967 (1948-08-01), Stone
patent: 4529203 (1985-07-01), Ribaudo

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