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:
Dec. 30, 2003
Filed:
Jul. 23, 2002
Applicant:
Inventor:
Jan Bechmann Johansen, Humlebæk, DK;
Assignee:
Disa Industries A/S, Herlev, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C 9/03 ; B22C 9/20 ; B22C 1/524 ;
U.S. Cl.
CPC ...
B22C 9/03 ; B22C 9/20 ; B22C 1/524 ;
Abstract
In a mould forming machine comprising a moulding chamber, a movable squeeze plate and a pattern, the filling of selected parts of the pattern with compressible mould material is improved by applying vacuum to said selected parts. By applying the vacuum separately to different parts of the pattern at different periods, of time during the filling step, the vacuum application can be applied during shorter periods only when needed, thereby reducing the drying out of the mould material and reducing the amounts of air to be removed by the vacuum system.