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:
May. 25, 1976
Filed:
Jan. 31, 1974
Applicant:
Inventors:
Carl Herbert Petersen, Vaerlose, DK;
Marius Gunnergaard, Lyngby, DK;
Assignee:
Dansk Industri Syndikat A/S, Herlev, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D / ; B22D / ;
U.S. Cl.
CPC ...
164131 ; 164344 ; 164404 ;
Abstract
For the purpose of separating castings from the sand or similar material forming a string of moulds, each of the castings proper together with a lump of heat damaged mould material totally surrounding the castings is separated from the mould string. After having been subjected to an appropriate degree of cooling, the castings are separated from the lump material which, after sufficient regeneration, may be re-used together with the non-damaged material of the moulds.