Liquid purification or separation – With repair or assembling means
Reexamination Certificate
2011-08-30
2011-08-30
Lithgow, Thomas M (Department: 1778)
Liquid purification or separation
With repair or assembling means
C210S444000
Reexamination Certificate
active
08007669
ABSTRACT:
A housing has a cylindrical side wall with lower and upper ends. The housing has a cylindrical chamber with an enlarged upper region. A basket is positioned within the chamber supported at the lower end of the housing. A filter has a central cylinder and outwardly extending filtering surfaces. The central cylinder is provided coaxial with the side wall. A stationary cap is attached to the upper end of the housing. The stationary cap has an upper end with a threaded aperture. The stationary cap has input and exit passages. A filter cap has a threaded exterior surface removably received in the threaded aperture. A flow discharge passage has a lower end positioned within the filter. The flow discharge passage has an upper end coupled to the exit passage. An annular flow cavity is provided between the flow discharge passage and the exit passage.
REFERENCES:
patent: 4367144 (1983-01-01), Peters et al.
patent: 5006235 (1991-04-01), Cooper
patent: 5670042 (1997-09-01), Clausen et al.
patent: 5858227 (1999-01-01), Stone et al.
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