Patent ID: 6655238
Filing Date: 2003-12-02
Classification: B25B

Abstract:
A ratchet tool comprising:a head with a hole defined therethrough and a side hole defined from a side of the head and communicating with the hole; an engaging ring rotatably received in the hole and having first teeth defined in an outer periphery thereof, each of said teeth being defined by two faces intersection at an apex, a pawl biased by a spring and movably received the side hole, second teeth defined in a side of the pawl and engaged with the first teeth of the engaging ring, an adjust angle â€œaâ€  which is 2 to 4 degrees being defined between a center of the engaging ring and apices of two adjacent first teeth of the engaging ring, an angle â€œbâ€  between two adjacent faces of two adjacent second teeth being larger than an angle â€œcâ€  between said two faces of any first teeth, a height â€œDâ€  of any of the first teeth being not less than a height â€œdâ€  of any of the second teeth.