B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
81/78
B25B 13/12 (2006.01)
Patent
CA 1252316
ABSTRACT OF THE DISCLOSURE The present invention relates to an adjustable wrench having a movable claw which is driven and rotated by an adjusting rod. The specification discloses a wrench having an adjustable claw comprising a hollow handle, the handle having an open mouth; a first fan- shaped gear mounted in the handle and fronting the mouth, and a gear axle. A second fan-shaped gear is in meshing engagement with the first fan-shaped gear, being axially mounted for rotation on the gear axle. A screw gear is mounted on the gear axle. A movable claw has a bottom portion thereof mounted in a track in the handle, the bottom portion having a geared surface which is in meshing engagement with the screw gear, the bottom portion fronting the top portion of the mouth. There is a hollow adjusting rod rotatingly coupled to the handle and a rotary shaft extending from the base of the adjusting rod to the base of the first fan-shaped gear. There are means for rotatably setting said first fan-shaped gear in operative position in the handles, said first gear having means for cooperating with and receiving said setting means.
498150
Gowling Lafleur Henderson Llp
Yang Tai-Her
LandOfFree
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