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:
Jun. 15, 1999
Filed:
Nov. 20, 1997
Applicant:
Inventor:
Thomas J Roberts, Sandusky, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 464 ; 264 466 ; 264129 ; 264220 ; 264255 ; 264313 ;
Abstract
A method of producing artificial rock formations such as rocks and waterfalls by (a) forming a flexible mold of latex, silicone or urethane from a master model; (b) forming a sectional fiberglass cradle to support the flexible mold; and (c) coating the flexible mold with layers of lacquer, non-foaming polyurethanepolyisocyanate, and foaming polyurethane-polyisocyanate; and (d) demolding and coating the final rock formation product with paint or a stain.