Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid current controlled cyclic system
Reexamination Certificate
2008-03-05
2009-12-15
Popovics, Robert James (Department: 1797)
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid current controlled cyclic system
C210S136000, C210S167020, C210S167040, C210S252000, C210S258000, C210S424000, C210S428000, C123S1960AB
Reexamination Certificate
active
07632398
ABSTRACT:
A filter including a first chamber; a second chamber; a piston having a head portion disposed in the first chamber and a rod portion disposed in the second chamber; a third chamber containing a filter medium, having an inlet communicating with the second chamber and an outlet; first and second conduits supplying fluid under pressure to the first and second chambers, respectively; and a valve in the first conduit operable to direct fluid under pressure to opposite sides of the piston head portion to reciprocate the piston and correspondingly eject fluid in the second chamber through the third chamber.
REFERENCES:
patent: 3278031 (1966-10-01), Rosaen
patent: 3283903 (1966-11-01), Muller
patent: 3374052 (1968-03-01), Fan et al.
patent: 3572507 (1971-03-01), Juskevic
patent: 3598238 (1971-08-01), Collins, Jr.,
patent: 3608722 (1971-09-01), Picard
patent: 3717252 (1973-02-01), Picard
patent: 3850802 (1974-11-01), Berger
patent: 3944488 (1976-03-01), Moatti
patent: 4022694 (1977-05-01), Fruman
patent: 4061575 (1977-12-01), Randle
patent: 4770771 (1988-09-01), Buckminster
patent: 4776962 (1988-10-01), Wakeman
patent: 4812230 (1989-03-01), Gerulis
patent: 4897186 (1990-01-01), Gerulis
patent: 6354790 (2002-03-01), Cummings et al.
patent: 2005/0211608 (2005-09-01), Lockwood
patent: 2006/0131220 (2006-06-01), Lockwood
patent: 2009/0223905 (2009-09-01), Cummings
United States Patent & Trademark Office Class 210 Schedule—Class 210 Liquid Purification or Separation, Oct. 2006, 14 Pages.
United States Patent & Trademark Office Class 210 Definitions—Class 210 Liquid Purification or Separation, Oct. 2006, 129 Pages.
Cummings David C.
Novak Druce & Quigg LLP
Popovics Robert James
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