The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 1984
Filed:
Jul. 19, 1982
Peter M Holleran, Concord, MA (US);
Bruce H Wisner, Malden, MA (US);
W. R. Grace & Co., Cambridge, MA (US);
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 2.0.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 3.0. 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.