Patent ID: 7311186
Filing Date: 2007-12-25
Classification: B25B,F16D

Abstract:
1. A ratchet tool comprising: a cartridge for attaching to a tool handle, including a chamber formed therein, and including two channels formed therein and communicating with said chamber thereof, a barrel rotatably engaged into said chamber of said cartridge, and including a gear provided thereon, two pawls slidably received in said channels of said cartridge respectively, and each including a base plane and a side plane, and each including a curved surface formed therein and having at least one first tooth and at least one second tooth formed therein, in which said at least one second tooth is located farther away from said base plane of said pawl as compared with said at least one first tooth, means for biasing said at least one first tooth and said at least one second tooth of said pawls to selectively engage with said gear of said barrel, and a control ferrule rotatably attached onto said cartridge, for controlling an engagement of said pawls with said gear of said barrel, wherein said at least one first tooth and said at least one second tooth of said pawls each includes a first tooth surface and a second tooth surface formed therein, said first tooth surface of said at least one first tooth is inclined relative to said base plane of said pawl and includes an included angle (α