Liquid purification or separation – With repair or assembling means
Reexamination Certificate
2007-09-04
2007-09-04
Lithgow, Thomas M. (Department: 1724)
Liquid purification or separation
With repair or assembling means
C210S440000, C210S450000, C222S146200, C222S330000, C222S504000
Reexamination Certificate
active
10831016
ABSTRACT:
A spring-biased filter assembly for a liquid dispenser is disclosed that permits ready removal of a filter assembly from a filter housing. The filter housing includes a liquid inlet, a liquid outlet, and a liquid passageway therebetween. The filter housing also has an opening in communication with the liquid passageway. The filter assembly comprises a closure element positioned in the opening and releasably coupled to the filter housing through movement between connected and disconnected positions with respect to the filter housing. A filter element is positioned in the liquid passageway and coupled to the closure element. A biasing member is coupled to the closure element and the filter element and biases the closure element into the connected position.
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patent: 2003/0080155 (2003-05-01), Jeter
patent: 2003/0192292 (2003-10-01), Seedorf
Gould Mark A.
Jones Kenneth
Lithgow Thomas M.
Nordson Corporation
Wood Herron & Evans L.L.P.
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