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. 27, 1983
Filed:
Oct. 20, 1981
Shinji Akita, Yokohama, JP;
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Abstract
A roll changing apparatus for rolling mills which is adapted for use in the manufacture of seamless steel pipes. The apparatus comprises a pair of sliding bases each mounted on a base block and movable parallel to each other, a plurality of roll carriages each containing a set of rolls, and means for moving the roll carriages, wherein two or more of the roll carriages are placed on each of the sliding bases and at least one of the roll carriages on each sliding base is moved forward to form a roll mill. When the roll carriages are to be changed, the forwardly moved roll carriages are moved back onto the sliding bases and then the other roll carriages are moved forward, thus automatically accomplishing the roll carriage changing in a short period of time.