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:
Jul. 04, 1989
Filed:
Dec. 23, 1987
Applicant:
Inventors:
Emil Ripberger, Remseck, DE;
Hanspeter Wieland, Ditzingen, DE;
Assignee:
Mahle GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
2915 / ; 92172 ;
Abstract
A process for the production of a cast piston upper part of a two-part piston comprising the steps of casting a piston head and a ring section having a collar of tab-type segments, wherein the tab-type segments have tapered ends; and bending over the tab-type segments in the direction towards the middle of the piston to form a lower closure serving as an annular cooling oil space.