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:
Feb. 24, 1987
Filed:
Nov. 13, 1984
John M Matusz, Plum Boro, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A steam generator wrapper closure and a method of installing the same includes a plug member (108) which includes a large diameter portion (110) and a small diameter portion (112) with an annular shoulder portion (114) defined therebetween. A locking pawl (124) is rotatably mounted upon the plug (108) through means of its shaft (122). A pawl shaft extension rod (154) and a handle (150) are utilized to manipulate the pawl (124) and the plug (108) from a position external to the steam generator outer shell (16). The axis of the pawl shaft (122) is radially offset with repect to the axis of the plug (108), and the diametrical extent of the pawl (124) is less than that of the small diameter portion (112) of the plug (108). In this manner, when the pawl (124) is rotated to a first position within which the pawl (124) is disposed within the circumferential boundary of the small diameter portion (112) of the plug (108), the pawl (124) and small diameter plug portion (112) may be inserted within the wrapper penetration (104) until the shoulder portion (114) of the plug (108) engages the exterior surface (118) of the wrapper (46). The pawl (124) may then be rotated to a diametrically opposite position within which the pawl (124) engages the interior surface (138) of the wrapper (46) thereby lockingly retaining the plug member (108) within the wrapper penetration (104).