Vacuum vice for bowling balls

Details Vacuum vice for bowling balls Vacuum vice for bowling balls

1994-10-21

1997-06-03

Briggs, William R.

Gear cutting, milling, or planing

Milling

Process

269 21, 408 1R, 409225, B23C 300, B23B 3500, B23B 1100

Patent

active

056347499

ABSTRACT:
A vacuum vice for holding a bowling ball when drilling holes or engraving the ball includes inner and outer o-rings seals which form inner and outer concentric vacuum chambers that work together to form a seal with a bowling ball having surface imperfections or engraving. The inner vacuum chamber holds the ball against the inner seal and a vacuum passageway applies the vacuum to the outer vacuum chamber which seats the ball against the outer seal.

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