| 摘要 |
This is a fully-rotating open-end wrench with two ratchets that are linked together by a tie-bar so that the ratchets remain in synchronization while they are applying torque against a center circumferentially notched gear. The center gear has an internal hexagonally shaped opening that is used to engage a standard nut or bolt. As the center notched gear turns, one, the other or both of the ratchets are engaged in the notches on the periphery of the gear. A spring loaded plunger keeps pressure on the tie-bar so that torque can be applied in either a clockwise or a counterclockwise direction against the gear. The direction of rotation of the ratchets can be quickly reversed by putting pressure on the edge of the tie-bar thus forcing the v-shaped protrusion on the tie bar past the v-shaped nose of the spring-loaded plunger.
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