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:
Oct. 22, 1985
Filed:
Apr. 01, 1981
Joseph N Orban, Scotch Plains, NJ (US);
Other;
Abstract
A stud drive tool for threading and unthreading a stud in a head of a vessel, such as a reactor, including a base plate adapted to rest on a flange on the head of vessel. The tool includes means for inserting the stud into a hole in the vessel and to thread and unthread the stud therein. The base plate effectively absorbs any counter-torque produced by the turning of the stud while it is being driven because handles, which serve as reaction rods and guides, are rotatable and rest against the outside of the flange. The tool for threading and unthreading the stud means includes a moveable jaw clamp insertable into a threaded hole in the top of the stud and moveable into a position to clasp the stud and pneumatic means in which the pressure is manually regulated to equalize the weight of the stud as it is being threaded into or unthreaded out of the vessel, and an air motor which turns the stud.