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Bruce S Wisner, 63106 Algonquin Trl, Ashland, MA 01721
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106 Algonquin Trl, Ashland, MA 01721 508-3097690
589 Concord Rd, Sudbury, MA 01776 508-4436338 978-4436338
Belmont, MA
1228 Hill Rd #1, Boxborough, MA 01719
Northampton, MA
Watertown, MA
Arlington, MA
Medford, MA
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Us Patents
Variable Flow Dispensing Device
US Patent:
4458831, Jul 10, 1984
Filed:
Jul 19, 1982
Appl. No.:
6/399541
Inventors:
Peter M. Holleran - Concord MA
Bruce H. Wisner - Malden MA
Bruce H. Wisner - Malden MA
Assignee:
W. R. Grace & Co. - Cambridge MA
International Classification:
B05B 712
US Classification:
222134
Abstract:
A dispensing device for mixing and dispensing multi-component liquid mixtures is described. The dispensing device comprises valve assemblies including a tapered valve plug and a correspondingly tapered valve seat and, downstream from the valve assemblies, respective orifices which provide access to a mixing and dispensing nozzle. The cross-sectional area of the orifices is about 1. 7. times. 10. sup. -4 to 2. times. 10. sup. -3 sq. in. and the ratio of the cross-sectional area of the valve opening at any level of operation to the cross-sectional area of its respective downstream orifice is less than about 3. The device generally is configured as a dispensing "gun" and provides a capability for controlled variation in the flow rate of the liquid components and mixing of the components at a consistent volume ratio.
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