主权项 |
1. A coupler for connecting a first bar and a second bar comprising:
a first hollow sleeve formed with a first inner threaded portion and a first tapered face respectively on each end of the inner face, the inner diameter of the first tapered face increasing toward the first inner threaded portion; a plurality of tapered clamps, an outer face of each tapered clamp formed with a second tapered face contacting the first tapered face, the plurality of tapered clamps and having a plurality of teeth therewithin; and a second hollow sleeve formed with a first outer threaded portion on one end of the outer face and a second inner threaded portion on the inner face, the first outer threaded portion and the first inner threaded being in conformity, wherein the tapered clamps are surrounded by the first hollow sleeve and the second hollow sleeve, and the tapered clamps are detachably connected to the first hollow sleeve and the second hollow sleeve, wherein the first hollow sleeve and the second hollow sleeve directly contact the tapered clamps. |