Double-action fluid weighing and dispensing process and system

Dispensing – Processes of dispensing

Reexamination Certificate

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Details

C222S055000, C222S077000, C222S334000

Reexamination Certificate

active

07963422

ABSTRACT:
Apparatus and process for dispensing fluids, such as chemical concrete admixtures, using an air-operated pump and load cell for supporting and measuring at least substantially 100% of the weight of the pump and fluid dispensed through the pump. A double-action, dual piston design of the air-operated pump allows positive air pressure to be used during both fluid-filling and fluid-expelling phases.

REFERENCES:
patent: 2287829 (1942-06-01), Bryan
patent: 3756456 (1973-09-01), Georgi
patent: 4010769 (1977-03-01), De Lorenzo et al.
patent: 4188978 (1980-02-01), De Lorenzo
patent: 4320855 (1982-03-01), Ricciardi et al.
patent: 4475665 (1984-10-01), Norton
patent: 4519753 (1985-05-01), Kitsnik
patent: 4830230 (1989-05-01), Powers
patent: 5038973 (1991-08-01), Gmur
patent: 5224626 (1993-07-01), Hernandez
patent: 5224627 (1993-07-01), Weag
patent: 5377868 (1995-01-01), Hernandez et al.
patent: 5713486 (1998-02-01), Beech
patent: 6224250 (2001-05-01), Kreinheder et al.
patent: 6541063 (2003-04-01), Prentice et al.
patent: 6814810 (2004-11-01), Prentice et al.
patent: 2005/0232797 (2005-10-01), Riney
patent: 2006/0207316 (2006-09-01), Tyrell
Plast-O-Matic Valves, Inc., “Air-Operated Chemical Metering Pumps”, http://www.plastomatic.com/vpa.html, printed Jul. 11, 2007, 6 pages.
Plast-O-Matic Valves, Inc., “‘Plast-O-Matic’ Chemical Metering Pumps Are Explosion-Proof and Self-Priming. They Are Designed to Deliver Exact Quantities of Highly Corrosive or Ultra-Pure Liquids Such As Sulphuric Acid, Hydrochloric Acid, Chlorine, Caustics, and Demineralized Water”, Jul. 11, 2007, 3 pages.
Plast-O-Matic Valves, Inc., “Series ‘VPA’ Air Operated Filling and Metering Pumps Installation Instructions”, dated Jan. 2006, 2 pages.
Plast-O-Matic Valves, Inc., “Plast-O-Matic VPA Metering Pump—A Case History”, printed Jul. 11, 2007, 2 pages.
Form PCT/ISA/210 and 237, International Search Report and Written Opinion for PCT/US2008/070161 dated Oct. 8, 2008, 8 pages.

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