Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element is fluid pressure sensitive
Patent
1989-04-07
1991-02-26
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Control element is fluid pressure sensitive
206 51, 220209, 422117, 422119, 422297, 422300, 422305, A61J 100, G05G 1500
Patent
active
049960270
ABSTRACT:
An appliance for containing and venting fluid, typically for disinfecting contact lenses, includes a container body which has an access opening and a removable closure for the opening. A gasket is seated to form a normally liquid-tight seal between the container body and the closure, and the gasket means has a composition which is sufficiently resilient to at least partially deflect and unseat from the container body upon exertion against the gasket of elevated gas pressure developed within the container, for example, during a disinfection process. The pressurized gas can then be vented past the unseated gasket which forms a vent passageway between the closure and the container body, after which venting the gasket redeflects to reseat and seal against the container body to prevent any subsequent leakage of fluid from the container body. As a result, the gasket serves not only as a closue seal, but also as a one-way check value for release of pressure, for example, during the disinfection process so that the alternative sealing and venting by the gasket are performed repeatedly.
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Ciba Vision Corporation
Giangiorgi R. A.
Johnston Jill
Warden Robert J.
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