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:
Oct. 06, 2015
Filed:
Jun. 21, 2012
Hiroyuki Kawadu, Tokyo, JP;
Ichiro Yamaguchi, Tokyo, JP;
Shuji Hagiwara, Tomoika, JP;
Shoji Endo, Tokyo, JP;
Tokuichiro Ojima, Tokyo, JP;
Hiroyuki Kawadu, Tokyo, JP;
Ichiro Yamaguchi, Tokyo, JP;
Shuji Hagiwara, Tomoika, JP;
Shoji Endo, Tokyo, JP;
Tokuichiro Ojima, Tokyo, JP;
IHI AEROSPACE CO., LTD., Tokyo, JP;
Abstract
A pulse rocket motor has a hollow cylinder-like first grain situated in a rear section of a pressure vessel; a first igniter for igniting the first grain; a hollow cylinder-like second grain situated in a front section of the pressure vessel; a second igniter for igniting the second grain; and a dividing sheet member that covers the second grain within the pressure vessel. The dividing sheet member includes a dividing sheet expanding at least along the inner circumferential surface of the second grain and holders formed integrally with the dividing sheet at both ends of the dividing sheet by cure adhesion and attached to the pressure vessel. The dividing sheet includes a brittle portion that expands along the inner circumferential surface of the second grain through a rear end face of the second grain and is more brittle than other portions.