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:
Jul. 07, 2015
Filed:
Jun. 13, 2012
Hajime Mori, Yokohama, JP;
Kunihiko Kinugasa, Yokohama, JP;
Yuusuke Watanabe, Tokyo, JP;
Jun Suzuki, Yokohama, JP;
Yoshiki Ishizaki, Yokohama, JP;
Yasuo Morishima, Yokohama, JP;
Hajime Mori, Yokohama, JP;
Kunihiko Kinugasa, Yokohama, JP;
Yuusuke Watanabe, Tokyo, JP;
Jun Suzuki, Yokohama, JP;
Yoshiki Ishizaki, Yokohama, JP;
Yasuo Morishima, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
A jet pump including a riser as a coolant supply tube, an inlet mixer forming a turn-around path for the coolant, a diffuser, and a jet pump beam provided with a bolt fixing device is disclosed. The bolt fixing device includes: a head bolt of a jet pump beam for pushing and supporting the inlet mixer from an upper side of the riser, the head bolt being provided with a polygonal head portion; a lock cap provided on the polygonal head portion of the head bolt; a body housing disposed on an upper surface of the jet pump beam and adapted to accommodate the lock pin; a plurality of tapered external teeth formed on an outer peripheral side surface of the lock cap; and a plurality of internal tooth-shaped grooves formed to the body housing to fix the head bolt of the jet pump beam.