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:
Aug. 08, 2000
Filed:
Mar. 31, 1998
Applicant:
Inventors:
Masaki Tsuchiya, Yokkaichi, JP;
Takao Shimizu, Nagoya, JP;
Assignee:
Daido Tokushuko Kabushiki Kaisha, Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; B23K / ; B21D / ; B25B / ;
U.S. Cl.
CPC ...
228 445 ; 2281734 ; 2281735 ; 228193 ; 228212 ; 228 493 ; 269156 ; 269239 ; 269268 ; 279-412 ; 279106 ;
Abstract
A diffusion bonding apparatus for pipes that are supplied downward from above comprising a lower block for holding a lower pipe and an upper block for holding and pressing an upper pipe against the lower pipe. In the apparatus, three or more hydrraulic cylinders are provided in a lifting member of the upper block about a joint where the upper pipe is held in such manner that the cylinders are located in a circumference of a circle.