Dense phase powder pump with single ended flow and purge

Details Dense phase powder pump with single ended flow and purge Dense phase powder pump with single ended flow and purge

2011-08-16

2011-08-16

Kramer, Devon C (Department: 3746)

Pumps

One fluid pumped by contact or entrainment with another

Diverse pumps

C417S065000

Reexamination Certificate

active

07997878

ABSTRACT:
A dense phase pump for particulate material includes a pump chamber wherein material flows into the pump chamber under negative pressure and flows out of the pump chamber under positive pressure. A plurality of pinch valves are provided to control flow of material into and out of the pump chamber. The pinch valves are operated independent of each other and of the pump cycle rate. A modular design of the pump is provided.

REFERENCES:
patent: 3260285 (1966-07-01), Vogt
patent: 3552712 (1971-01-01), Whitlock
patent: 3951572 (1976-04-01), Ray, Jr. et al.
patent: 4116589 (1978-09-01), Rishton
patent: 4268005 (1981-05-01), Raftis et al.
patent: 5273406 (1993-12-01), Feygin
patent: 6102361 (2000-08-01), Riikonen
patent: 6227768 (2001-05-01), Higuchi et al.
patent: 6325572 (2001-12-01), Dietrich
patent: 6508610 (2003-01-01), Dietrich
patent: 6722822 (2004-04-01), Pfeiffer et al.
patent: 6908048 (2005-06-01), Di Gioia et al.
patent: 6959843 (2005-11-01), Kondo
patent: 7150585 (2006-12-01), Kleineidam et al.
patent: 7163359 (2007-01-01), Moser
patent: 2002/0079330 (2002-06-01), Kondo
patent: 1 087 520 (1960-08-01), None
patent: 4300832 (1994-07-01), None
patent: 19736703 (1999-03-01), None
patent: 1 689 531 (2009-06-01), None
patent: 57-11948 (1982-03-01), None
patent: 61-090917 (1986-09-01), None
patent: 08-073034 (1996-03-01), None
patent: 09-71325 (1997-03-01), None
patent: 09-071325 (1997-03-01), None
patent: 09-236246 (1997-09-01), None
patent: 10-024255 (1998-01-01), None
patent: 2003-275855 (2003-09-01), None
patent: 03/024612 (2003-03-01), None
patent: WO03/024612 (2003-03-01), None
patent: 03/083335 (2003-10-01), None
patent: 2004/087331 (2004-10-01), None
patent: 2005/005060 (2005-01-01), None
European Search Report dated Sep. 9, 2009, for European patent application No. 09161262.2.
International Search Report dated May 3, 2005, for International Application No. PCT/US2004/039078.
Written Opinion dated May 3, 2005, for International Application No. PCT/US2004/039078.
Communication dated Sep. 20, 2007, for European Patent Application No. 04811742.8.
Response dated Jan. 29, 2008, submitted in response to Official Communication dated Sep. 20, 2007, for European Patent Application No. 04811742.8.
Communication dated Nov. 14, 2008, for European Patent Application No. 04811742.8.
Communication dated Sep. 23, 2009, for European Patent Application No. 09161262.2.
Opposition to EP 1 689 531 B1 filed with European Patent Office on Mar. 3, 2010.
Communication dated Mar. 9, 2010, for European Patent Application No. 04811742.8.
Response to Opposition/Communications dated Sep. 3, 2010 and Sep. 4, 2010 filed with the European Patent Office on Aug. 2, 2010, in response to Opposition to EP 1 689 531 B1.
Office Action for Japanese Patent Application No. 2006-541591 dated Oct. 27, 2010. See p. 2, Regarding Reason 3.
English translation of Response to Office Action for Japanese Patent Application No. 2006-541591. See Remarks directed to Reason 3, Oct. 27, 2010.

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