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. 27, 2002
Filed:
Apr. 23, 1998
Applicant:
Inventor:
Jacobus Cornelis Wijsman, Rijnsburg, NL;
Assignee:
Allseas Group S.A., , CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 1/16 ; F16L 1/26 ; B25B 1/328 ;
U.S. Cl.
CPC ...
F16L 1/16 ; F16L 1/26 ; B25B 1/328 ;
Abstract
A method and apparatus for connecting two pieces of pipe having flanges when the pipe pieces are located deep under a water surface. A movable bolt wrench is provided which has a number of wrenches mounted in a frame corresponding to the bolt holes on the flanges of the pipe pieces. Bolts located in the bolt wrenches are aligned with the bolt holes of the flanges and inserted into the bolt holes. A nut wrench is also provided containing nuts which, when aligned, are threaded onto the ends of the bolts associated with the bolt wrench. After the bolt and nut connections are made, these bolts and nuts are tightened by the operation of the bolt and nut wrenches.