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:
May. 16, 2000
Filed:
Jul. 17, 1998
Kazuo Sakamaki, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An underwater inspection/repair apparatus comprises a sealing device provided around an opening portion of a watertight vessel, a pushing mechanism provided to the watertight vessel, a water discharge pump provided to the watertight vessel for discharging water in an inside of the watertight vessel, and a compressed air supplying device for supplying a compressed air into the inside of the watertight vessel. A top end of the sealing device is pushed against an inner wall surface of the reactor vessel by a reaction force generated when the pushing member of the pushing mechanism is pushed against the reactor internal structure, so that the inside of the watertight vessel can be isolated in a watertight manner. The pneumatic water discharge pump includes a pneumatic pressure cylinder driven by a pneumatic pressure, and a water discharge cylinder cooperated with the pneumatic pressure cylinder. Accordingly, there can be provided an underwater inspection/repair apparatus which is able to conduct inspection/repair operations without a discharge of a core water from a reactor vessel.