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. 13, 1999
Filed:
Dec. 15, 1997
Klaus Fink, Northfield, OH (US);
Moen Incorporated, North Olmsted, OH (US);
Abstract
A procedure for making zinc particles of a size, shape and composition such that the particles can be subsequently used in a process for manufacturing zinc parts from such particles in either molten or powder form includes the initial step of heating zinc to a temperature at least as high as 720.degree. C. The molten zinc is passed through a screen having small openings, on the order of about 1/4'.times.1/4' into a cooling region formed by a movable surface which is at a temperature of on the order of about -200.degree. C. The zinc forms small particles as it passes through the openings in the screen and essentially instantaneously solidifies as it contacts the movable surface. Thereafter, the solidified zinc particles are subjected to a grinding process to reduce their size to a powder having a surface area in the range of 2 mm.sup.2 to 20 mm.sup.2.