BALL BEARING TENSION SYSTEM FOR A SHEAR

摘要

The present invention is a device for cutting hair In one embodiment, the device comprises a first blade member comprising an inner surface haying a nde-on portion, an outer surface having a recessed portion disposed opposite the ride-on portion, and a thru-hole The device further comprises a second blade member comprising an inner surface having a ride-on portion in contact with the ride-on portion of the first blade member, an outer surface having a recessed portion disposed opposite the nde-on portion, and a thru-hole aligned with the thru-hole of the first blade member The device further comprises first and second ball bearing units disposed in the recessed portions of the first and second blade members, respectively. Each of the ball bearing units comprise an inner sleeve and an outer sleeve engaged with the recessed portions of the first and second blade members, respectively.