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:
Apr. 23, 1981
Applicant:
Inventors:
Joseph J Schneider, Kanata, CA;
Robert A Kaucic, Newark, DE (US);
Assignee:
AMCA International Corporation, Hanover, NH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21J / ;
U.S. Cl.
CPC ...
72478 ; 72482 ; 72367 ; 72369 ; 405136 ; 405137 ; 405178 ; 254359 ; 254312 ; 269 481 ;
Abstract
This invention relates to improved apparatus and process for manufacture of tunnel modules and tunnel sections used to build underwater tunnel tubes. A collapsible fixture is situated to roll up flat steel plate into a circular shell for the tunnel modules. A hydraulic cylinder is utilized to adjust the diameter of the fixture without collapsing it, in order to close any gaps between the ends of the plate when it is rolled into a shell.
Schneider, Joseph. (1983). Apparatus and process for improved manufacture of shells for tunnel tubes (U.S. Patent No. 4406150). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4406150
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile