Patent ID: 9687970
Date: 2017-06-27
CPC Classifications: B25B

Claim:
1. An oil core wrench comprising: a oneway control unit, a wrench unit and a rotation handle; wherein: the wrench unit includes: the base member is provided with a receiving recess and two passages; the receiving recess of the base member has a first side provided with a resting wall and a second side provided with a receiving space; the clamping member has two distal ends extending through the two passages of the base member and secured to the adjusting member; the oneway control unit is received in the receiving recess of the base member and mounted on the first end of the threaded rod; the rotation handle is secured on a second end of the threaded rod; the oneway control unit includes: the control member has a top provided with a push portion abutting an inner top edge of the toothed member; the oneway control unit further includes a mandrel extending through the toothed member and the control member; the control member is provided with a transverse hole; the toothed member is provided with a through aperture; and the mandrel extends through the through aperture of the toothed member and the transverse hole of the control member so that the toothed member is pivotally mounted on the control member.