Liquid purification or separation – With repair or assembling means
Reexamination Certificate
2009-03-09
2009-12-29
Lithgow, Thomas M (Department: 1797)
Liquid purification or separation
With repair or assembling means
C210S234000, C210S235000, C210S444000
Reexamination Certificate
active
07638046
ABSTRACT:
The invention relates to a filter device comprising a hydraulic block (1) receiving a removable filter (2) that is screwed into a first internal thread (8) of the hydraulic block. The hydraulic block receives a retaining member (101) suitable for retaining the filter axially when the filter is screwed to the hydraulic block, the hydraulic block including a second internal thread (8) that is on the same axis as the first internal thread and that receives a fastener member (102) for fastening the retaining member to the hydraulic block, the fastener member being screwed into the second internal thread with toque that is sufficient to prevent the retaining member escaping in service.
REFERENCES:
patent: 2878936 (1959-03-01), Scavuzzo et al.
patent: 2932400 (1960-04-01), Scavuzzo
patent: 3080972 (1963-03-01), Smith
patent: 3283907 (1966-11-01), Whiting
patent: 5711872 (1998-01-01), Jones et al.
patent: 2004/0217045 (2004-11-01), Gruca et al.
Lithgow Thomas M
Messier-Bugatti
Sughrue & Mion, PLLC
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