Nalge Nunc International Corporation

Nalge Company

Mark Giverc

Richard A Leoncavallo

Ravinder C Mehra

Peter Kevin Baird

Ravi Mehra

A filtering unit including an upper container for receiving fluid to be filtered, a lower container for receiving the fluid from the upper container and an intermediate filter cassette. The filter cassette includes a support member connected with a flat filter member, such as a membrane filter, and can be removed with respect to each of the upper and lower containers. The filter cassette may be inserted within the upper container with sealing engagement between the support member and the internal wall of the upper container. The various disclosed embodiments include the ability to serially connect multiple filter cassettes generally between the liquid contained in the upper container and the lower container.

Filtering unit having separately attachable filter cassette, filter cassette, and method of filtering

A dispensing container including a receptacle portion for holding liquids and an upper opening having a closure device. The closure device is embodied in threaded cap which closes a relatively large opening in the top of the receptacle portion for filling purposes. The closure device includes a spout connected to the threaded cap for sliding movement between open and closed positions. The spout includes a plug member having a resilient static sealing element. A tubular closure element is secured to the threaded cap and includes a plug bore which receives the plug member and further defines a fluid flow path. A resilient dynamic sealing element is disposed on an outer surface of the tubular closure element and the dynamic sealing element is in continuous contact with an inner surface of the spout during sliding movement thereof. The tubular closure element further includes an upper sealing surface adapted to engage the static sealing element and apply axial compression thereto when the spout is in a closed position. A flip-top protective cover is connected to the threaded cap and, in a closed position, the protective cover maintains the static sealing element in axial compression against the sealing surface.

Squeeze bottle and leakproof closure device

Bike bottle

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Palmyra, NY, United States of America

Mark Giverc