Golf putter head

Details Golf putter head Golf putter head

1996-11-22

1997-09-09

Passaniti, Sebastiano

Games using tangible projectile

Golf

Club or club support

473349, 473340, 273DIG14, A63B 5304

Patent

active

056650116

ABSTRACT:
A synthetic ruby putter head is produced from a cylindrical round boule sliced into pieces. A round inside diameter diamond saw performs the cutting operation. Each resulting disc piece is temporarily cemented to a steel parallel round plate and is Blanchard ground with a rotary surface grinder having a fine diamond wheel to remove the slicing irregularities on both sides and to establish a fixed thickness for all the pieces. Thereafter, the pieces are fine ground and polished to bring out the color of the synthetic ruby and a hole is drilled into the top surface of the disc by a diamond tool and a putting shaft is inserted therein and held in place with an epoxy adhesive. The putter has a flatness on the putter face measured in light waves using a zygo interferometer that can measure flatness of 1/10 of the wavelength at 632.8 nm. The synthetic ruby putter face is polished flat to 1/4 of a wavelength or better at 632.8 nm across one inch of the putter face.

REFERENCES:
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patent: 5445386 (1995-08-01), Marshall
patent: 5467989 (1995-11-01), Good
patent: 5480153 (1996-01-01), Igarashi

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