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:
Dec. 14, 1993
Filed:
Nov. 30, 1992
Franz Dirauf, Ebensfeld, DE;
Roland Gottfried, Langensendelbach, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A nuclear power plant includes a primary loop having a vessel with a connection piece. A manipulator for working in the vicinity of the connection piece, especially for non-destructive testing, includes two trolleys being moveable circumferentially of the connection piece. A jointed-shank arm disposed on the trolleys has two shanks each having first and second ends. Hinged supports are each disposed on a respective one of the trolleys and each support the first end of a respective one of the shanks. A crown hinge joins the second ends of the shanks together. A support for a tool or a test head is mounted on the crown hinge. A process for carrying out work in the connection-piece region with a maneuvering unit includes adjusting a position of each of the trolleys with a respective drive motor, pressing the tool or test head against a wall of the vessel with spring means acting upon the shanks, such as pneumatic or hydraulic cylinders, and maneuvering the crown hinge into a predetermined position and/or over a predetermined path by varying the position of at least one of the trolleys with a control device acting upon the drive motors.