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US 5,634,749 AGranted
Vacuum vice for bowling balls
AssigneeJerry Liem
InventorsDavid Edis, Bert Poort
Life of this patent
Estimating the term…
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.
Claims20
A vacuum vice for holding bowling balls, comprising:
- a housing for supporting a bowling ball;
- an inner seal on the housing surrounding and supporting an inner portion of the bowling ball to form an inner vacuum chamber between the inner portion of the bowling ball and the housing;
- an outer seal on the housing surrounding and supporting a second portion of the bowling ball including the inner portion and an outer portion surrounding the inner portion, the outer seal forming an outer vacuum chamber between the outer portion of the bowling ball and the housing;
- and
- a passageway for connecting a source of vacuum to the inner and outer vacuum chambers.
2 more elements
A method of holding bowling balls, comprising the steps of:
- mounting an inner seal on a housing supporting an inner portion of a bowling ball;
- forming an inner vacuum chamber between the housing and the inner portion of a bowling ball;
- mounting an outer seal on the housing surrounding a second portion of the bowling ball including the inner portion and an outer portion surrounding the inner portion;
- forming an outer vacuum chamber between the outer portion of the bowling ball and the housing;
- and
- applying a source of vacuum to the inner and outer vacuum chambers.
3 more elements
A vacuum vice for holding bowling balls, comprising:
- a housing for supporting a bowling ball;
- inner and outer concentric circular seals on the housing for supporting the bowling ball and forming first and second concentric vacuum chambers between the bowling ball and the housing;
- and
- means for applying a source of vacuum to the first and second vacuum chambers.
1 more element
Dependencies are inferred from the claim text.