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:
Aug. 22, 2006
Filed:
Aug. 06, 2004
Takuma Saito, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Jyunichi Toukairin, Hitachinaka, JP;
Kenji Kataoka, Hitachinaka, JP;
Kazuhide Ohzeki, Hitachinaka, JP;
Shigeru Ishikawa, Hitachinaka, JP;
Hideki Watanabe, Hitachinaka, JP;
Takuma Saito, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Jyunichi Toukairin, Hitachinaka, JP;
Kenji Kataoka, Hitachinaka, JP;
Kazuhide Ohzeki, Hitachinaka, JP;
Shigeru Ishikawa, Hitachinaka, JP;
Hideki Watanabe, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
An impact drill minimizing transmission of vibration to a handle gripped by a user's hand. A spindle extends through a main frame and is movable in its axial direction and rotatable about its axis. A first ratchet is rotatable and axially movable together with the spindle. A second ratchet is axially movable but unrotatable. In an impact drilling mode, the first ratchet is brought into abutment with the second ratchet so that the spindle is reciprocally moved in the axial direction.