Patent ID: 6148698
Filing Date: 2000-11-21
Classification: B25G,Y10T

Abstract:
An angle-adjustable box end wrench comprising a handle, said handle comprising a front coupling block, a box end pivoted to the front coupling block of said handle, said box end comprising a box, a substantially U-shaped web area, two axle holes extended through two distal ends of said U-shaped web area and pivotally connected to the front coupling block of said handle at two opposite sides, a first toothed portion and a second toothed portion respectively formed on the periphery of the two distal ends of said U-shaped web area, pivot means mounted in the axle holes on the two distal ends of said U-shaped web area and installed in the front coupling block of said handle for enabling said box end to be turned within 180.degree. relative to said handle, and a locking mechanism mounted in said handle and controlled to engage the toothed portions at said U-shaped web area and to lock said box end, wherein said handle comprises a transverse receiving open chamber disposed adjacent to said front coupling block for holding said locking mechamism; said locking mechanism comprises a long rod member moved in and out of said transverse receiving open chamber at one end, said long rod member comprising a toothed portion raised around the periphery thereof for engagement with the first toothed portion at said U-shaped web area of said box end, a short rod member moved with said long rod member in and out of said transverse receiving open chamber at an opposite end, said short rod member comprising a toothed portion raised around the periphery thereof for engagement with the second toothed portion at said U-shaped web area of said box end, a fastening element fastened to said short rod member and said long rod member to fix said short rod member and said long rod member together, and spring means mounted around said long rod member and stopped between the toothed portion at said long rod member and a step inside the receiving open chamber in said handle to force the toothed portion of said long rod member and the toothed portion of said short rod member into engagement with the first toothed portion and second toothed portion at said web area of said box end.