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:
Jun. 19, 1990
Filed:
May. 05, 1989
Antoine Gemma, Meudon, FR;
Electricite de France, Paris, FR;
Abstract
The invention relates to a device for brushing the gasket face of a manhole for gaining access to the inside of a vessel. The invention comprises a main frame (100), a secondary frame (200) mounted to rotate relative to the main frame (100) about an axis (101) which is coaxial with the manhole, and a brushing mount (300) supported by the secondary frame (200) and capable of oscillating about a second axis (102) transversal to the axis (101). Motor means (105 and 205) separately rotate the secondary frame (200) and the brush (301), thereby enabling effective tangential brushing to be performed. The device also includes a continuous suction passage (500) passing through the inside of the secondary frame (200) and through the oscillating brushing mount (300), and opening out into the brushing zone. The invention is particularly applicable to brushing the gasket face of a manhole in a steam generator or pressurizer of a nuclear power station.