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. 09, 2013
Filed:
Oct. 13, 2009
Hiroki Kitagawa, Hitachinaka, JP;
Masashi Nishida, Hitachinaka, JP;
Tetsuhito Shige, Hitachinaka, JP;
Kousuke Akutsu, Hitachinaka, JP;
Masaya Nagao, Hitachinaka, JP;
Shouichi Hirai, Hitachinaka, JP;
Hiroki Kitagawa, Hitachinaka, JP;
Masashi Nishida, Hitachinaka, JP;
Tetsuhito Shige, Hitachinaka, JP;
Kousuke Akutsu, Hitachinaka, JP;
Masaya Nagao, Hitachinaka, JP;
Shouichi Hirai, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
The nailing machine () comprises an air passage () allowing communication between a cylinder () and a return air chamber () in which compressed air for returning a piston () to the initial position is accumulated. The air passage () is provided with a control valve () controlling entry of compressed air into the return air chamber () from the cylinder (). The control valve () opens the air passageand allows entry of compressed air into the return air chamber () in the case wherein the nailed object produces a small reaction force upon driving the nail, namely when the upward moving distance of the body () relative to the push lever () is smaller than a predetermined distance. The compressed air that has entered the return air chamber () further enters a below-the-piston chamber and serves as air damper, reducing excess energy absorbed by a piston bumper ().