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:
Apr. 27, 2010
Filed:
Aug. 07, 2006
Junichi Tamura, Tokyo, JP;
Katsuhiko Murayama, Tokyo, JP;
Junichi Tamura, Tokyo, JP;
Katsuhiko Murayama, Tokyo, JP;
Max Co., Ltd., Tokyo, JP;
Abstract
When a movable sleeveon a cylinder moves upward, a combustion chamberin a sealed state is formed. Mixed gas is explosively burnt within the combustion chamberso as to drive a fastener out. A lock cylinderis disposed beneath the movable sleeve. A lock pistonis housed within the lock cylinderso as to be movable in an up/down direction. The upper end of the lock pistonis capable of being engaged with a holding memberwhich is interlocked with the movable sleeve. The lower portion of the lock cylinder is coupled to the combustion chamber via a gas tube. The gas tubeis provided with a check valve. The lock cylinderis provided with an electromagnetic valve. The electromagnetic valveopens upon the lapse of a predetermined time period after the combustion within the combustion chamber.