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:
Mar. 17, 2015
Filed:
Dec. 16, 2010
Bruce J. Lentner, Wilmington, NC (US);
Michael S. Defilippis, Wilmington, NC (US);
Khaled M. Ewida, Garland, TX (US);
Robin D. Sprague, Wilmington, NC (US);
Luke A. Davis, Salem, VA (US);
Bruce J. Lentner, Wilmington, NC (US);
Michael S. Defilippis, Wilmington, NC (US);
Khaled M. Ewida, Garland, TX (US);
Robin D. Sprague, Wilmington, NC (US);
Luke A. Davis, Salem, VA (US);
GE-Hitachi Nuclear Energy Americas LLC, Wilmington, NC (US);
Abstract
A method and apparatus for repairing and/or reinforcing a Boiling Water Reactor (BWR) jet pump riser pipe. The repair includes attaching two collars to the riser pipe using match drilling to drill holes through the collars and the riser pipe and plugging the holes with expandable plugs. Support columns are attached to the collars. Brace supports are slideably attached to the support columns. Gaps between each brace support and its respective collar are then narrowed as ratchet bolts may apply a force that pulls downward on an upper collar and pulls upward on a lower collar, thereby exerting a compression force on the riser pipe. A clamp assembly may also be located between the two collars that applies a hoop force on the riser pipe.