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:
Aug. 20, 1991
Filed:
Dec. 10, 1990
Applicant:
Inventor:
Charles W Neefe, Angel Fire, NM (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264115 ; 264 37 ; 264122 ; 264D / ;
Abstract
A method of making useful objects by coating grains of sand with a thin film of styrene. The styrene coating is made by making styrofoam into styrofoam fluff by providing a plurality of tearing members around a cylinder. Rotating the cylinder and tearing members and subjecting the surface of the styrofoam to the rotating tearing members. The moving tearing members rupture the styrofoam surface and tear away pieces of the styrofoam, forming styrofoam fluff. The fluff has a sectional density less than the styrofoam from which the styrofoam fluff was made. The styrofoam fluff is mixed with sand, the mixture heated, the styrofoam fluff melts and forms a coating on the sand particles.