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:
Sep. 11, 1984
Filed:
Feb. 24, 1983
Akira Asari, Osaka, JP;
Fuminori Kaneko, Kobe, JP;
Takashige Yamamura, Kobe, JP;
Satoshi Matsumoto, Osaka, JP;
Takayoshi Dohsai, Hyogo, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
An upsetter mechanism including a die set having a plurality of juxtaposed forming sections, first and second punches extractably protrudable into the respective forming section of the die set, and a punch drive mechanism for driving the punches through a hydraulic cushioning mechanism, the hydraulic cushioning mechanism including a hydraulic cylinder having a maximum diameter corresponding to the total load of the punches; a main pressurizing ram slidably fitted in the hydraulic cylinder; a punch attached to the hydraulic cylinder; and a movable pressurizing ram slidably fitted in a cylinder formed in the hydraulic cylinder of maximum diameter to cope with the load of the first punch and having a second punch attached to the fore end thereof, the movable pressurizing ram being operable independently of the main pressurizing ram.