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:
Apr. 17, 1984
Filed:
Dec. 14, 1981
Applicant:
Inventor:
Douglas D Hall, Houston, TX (US);
Assignee:
Armco Inc., Middletown, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63C / ; E21B / ;
U.S. Cl.
CPC ...
405190 ; 166340 ; 166342 ; 294 8615 ;
Abstract
Remotely operated tool for performing functions at underwater installations. Tools according to the invention are especially useful for remote retrieval and installation of wireline bushings in hollow guide posts. Particularly advantageous embodiments of the tool are fluid pressure operated, include means for performing at least two functions, successively, and respond to a single pressure fluid input rather than requiring successive inputs.