Patent ID: 8387490
Filing Date: 2013-03-05
Classification: B25G

Abstract:
1. A tool comprising: a head member having a passage defined transversely therethrough and a first recess defined axially therein, a first driving head connected to the head member; a first rod slidably passing through the passage and a first end of the first rod having a first pivotal portion which has a U slot, a first hole defined through the first pivotal portion and communicating with the U slot, a first restriction portion partially protruding from a periphery of a second end of the first rod, the first rod having a second recess defined in the first end thereof, the second recess communicating with the U slot; a second rod slidably passing through the passage and a first end of the second rod having a second pivotal portion which has a second hole, the second hole of the second pivotal portion pivotably connected to the first hole of the first pivotal portion by extending a pin therethrough, a second restriction portion partially protruding from a periphery of a second end of the second rod, the second pivotal portion having multiple notches defined along an outer surface thereof and the notches located around an axis of the second hole, the second recess being located in alignment with one of the notches; a first spring and a first member located in the first recess and the first member being pushed by the first spring to protrude into the passage; a second spring and a second member located in the second recess and the second member being pushed by the second spring to engage with one of the notches, and the second rod being pivotable about the pin and relative to the first rod when the first and second pivotal portions are located outside of the head member.