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.:

US 8302447 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 06, 2012

Filed:

Apr. 24, 2007
Applicants:

Ernst-peter Schmitz, Abtsgmuend, DE;

Peter Kolbe, Aalen, DE;

Inventors:

Ernst-Peter Schmitz, Abtsgmuend, DE;

Peter Kolbe, Aalen, DE;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21K 1/42 (2006.01); B21D 53/26 (2006.01);
U.S. Cl.
CPC ...
Abstract

A device and method are provided for forging sleeve-shaped parts such as pistons. The device includes a form with: an upper form mandrel (C); an outer form ring (A); a lower form mandrel (B); an ejector device with an upper ejector (G) for ejection through the upper form mandrel (C); a lower ejector (H) for ejection through the lower form mandrel (B). Optional support devices for the form include a lower reinforcement ring (D) for the lower region of the outer form ring (A), a form mandrel housing (F) for the upper region of the outer form ring (A), and a clamping base (E) to support the lower form mandrel (B), by means of which the lower ejector (H) may be operated. The device and method advantageously facilitates the manufacture of pistons having a long skirt length and a minimal wall thickness.


Find Patent Forward Citations

Schmitz, Ernst-Peter. (2012). Device for forging bush-shaped objects and a forged part produced therewith (U.S. Patent No. 8302447). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8302447

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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