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. 04, 1991
Filed:
Jun. 30, 1989
Applicant:
Inventor:
Wilhelm Strasser, Bergisch-Gladbach, DE;
Assignee:
Leybold Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29890035 ; 29890054 ; 228184 ;
Abstract
The invention is directed to a method for manufacturing a cylindrical refrigerator housing (2) of a refrigerator cold head composed of a plurality of parts to be connected to one another. To simplify the manufacturing method and reduce the deterioration of the efficiency of the refrigerator due to the application of heat via the refrigerator housing, it is proposed that at least the housing section (1) of the refrigerator housing (2) that encompasses the cylinder wall is manufactured by a cold-working process, for example by ironing, stretching pressure rolling or deep-drawing.