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:
Jan. 09, 1996
Filed:
Dec. 22, 1994
Applicant:
Inventor:
Marc R Sauerhoefer, Chicopee, MA (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264401 ; 264156 ; 264232 ; 264233 ; 264340 ; 264500 ; 264572 ; 264494 ; 264442 ;
Abstract
A method of evacuating uncured resin from internal passages of semi-hollow stereolithographically produced objects includes, subjecting the object to air flow for between about 0.5 hours and about 2 hours, at a temperature greater than about 75.degree. F.; externally cleaning the object with alcohol; submerging the object in a bath of alcohol, wherein the bath is internally agitated; removing the object from the bath and repeating the above steps to displace any residual resin, wherein total object exposure time to alcohol does not exceed three hours.