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:
Mar. 18, 1986
Filed:
Jan. 23, 1985
Tadashi Takimoto, Fuchu, JP;
Hirotsugu Oishibashi, Musashino, JP;
Katsuyoshi Ueyama, Musashino, JP;
Muneyuki Ohara, Musashino, JP;
Akio Kobayashi, Hachiohji, JP;
Keiichi Aoki, Tokyo, JP;
Mitsuo Nakamura, Higashi-Kurume, JP;
Kenzo Hagiwara, Hachiohji, JP;
Japanese National Railways, Tokyo, JP;
Hakusan Seisakusho Co., Ltd., Tokyo, JP;
Abstract
A gas pressure welding machine comprises a movable clamp means for clamping one of reinforcing rods to be joined together, a stationary clamp means for clamping the other reinforcing rod, a punching die for punching-shearing a bulge being formed around a joint portion of the reinforcing rods, and a key connection mechanism for detachably connecting the movable clamp means and the punching die, whereby the reinforcing rods are subjected to pressure butt welding to form a bulge around a joint portion thereof and the bulge is immediately punching-sheared under red heat by the punching die.