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. 16, 1990
Filed:
Mar. 24, 1989
Antoine Gemma, Meudon, FR;
Electricite de France (Service National), Paris, FR;
Abstract
A machine (3) for cleaning tapped holes (2) distributed around the periphery of an opening (1), e.g., those tapped holes used for peripherally bolting on a cover for an armhole or an eyehole in a steam generator of a nuclear power station. The machine comprises a grip (4) for centering and clamping the machine on the opening, thereby enabling it to be positioned on the axis (12) of the opening and to be held in position by abutment against the wall (10) of the opening; and a brush (13) disposed at a fixed radial distance from the axis of the opening. The brush is movable both in rotation about the axis (12) of the opening so that the trajectory of the brush describes a circle intersecting the axes of the various tapped holes distributed around the periphery of the opening, thereby enabling the brush to be selectively positioned over each of the tapped holes; and in axial translation along an axis coinciding with the axis of a tapped hole so as to enable the brush to be inserted into and withdrawn from the tapped hole.