Vent cap

Details Vent cap Vent cap

2005-05-03

2005-05-03

Rivell, John (Department: 3753)

Fluid handling

Control by change of position or inertia of system

With second control

C137S043000, C137S068190, C137S599160, C429S085000

Reexamination Certificate

active

06886579

ABSTRACT:
A vent cap is provided for releasing gas from containers, while preventing spillage of the contents therein when the container is tipped from a vertical position. The vent cap has a ball bearing mounted in a ball bearing containment chamber on the top thereof which, when the container is in an upright vertical position, allows release of gases from the container but, when the container is tipped, allows a piston disposed within the vent cap to close off gas release ducts formed in the vent cap, thus effectively preventing spillage of the containers contents.

REFERENCES:
patent: 1260739 (1918-03-01), Yeamans
patent: 1363263 (1920-12-01), Ohliger et al.
patent: 2113454 (1938-04-01), Mitchell
patent: 2273737 (1942-02-01), Snyder
patent: 2869563 (1959-01-01), Schoengrun
patent: 3351497 (1967-11-01), Lucas
patent: 3610263 (1971-10-01), Walters
patent: 3738384 (1973-06-01), Hall
patent: 3994360 (1976-11-01), Leibold
patent: 4299247 (1981-11-01), Keller
patent: 4846208 (1989-07-01), Hempel et al.
patent: 6622760 (2003-09-01), Peattie
patent: 544427 (1922-09-01), None
Translation of FR544427A1.

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