▪ US Patent No. 9,551,151 (Lee et al.)
- 발명의 명칭: Apparatus for coupling reinforcing bar using hydraulic pressure
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1. An apparatus for coupling reinforcing bars by using hydraulic pressure, the apparatus comprising: first and second bodies (100 and 250) into which reinforcing bars are inserted to pass through the inside of the first and second bodies (100 and 250); conical members (400 and 401) that are inserted into receiving holes (105 and 106) of the first body (100) and receiving holes (252 and 253) of the second body (250) respectively, wherein the receiving holes (105 and 106) of the first body (100) correspond to the receiving holes (252 and 253) of the second body (250); a plurality of reinforcing bar securing members (204, 205, 206, 207, 208, and 209) inserted into the first and second bodies (100 and 250) in such a way that the plurality of reinforcing bar securing members are spaced from outer surfaces of the inserted reinforcing bars, with reinforcing bar locking ridges (204b, 205b, 206b, 207b, 208b, and 209b) provided on inner surfaces of the reinforcing bar securing members; a hydraulic pressure applying unit for inserting the conical members (400 and 401) into the first and second bodies (100 and 250) through the receiving holes (105, 106, 252, and 253) of the first and second bodies (100 and 200); and a pair of external force dispersion medium members (600 and 601) facing each other, wherein first surfaces of the medium members are in contact with the conical members (400 and 401), and second surfaces of the medium members are in contact with butt end surfaces of the reinforcing bar securing members (204, 205, 206, 207, 208, and 209), wherein when tension is applied to the reinforcing bars, the reinforcing bar securing members (204, 205, 206, 207, 208, and 209) compress the reinforcing bars and push jaw elements (D5, D6, D7, and D8) of inner surfaces of the first and second bodies (100 and 200), thereby preventing movement of the reinforcing bars, wherein edges of the first surfaces of the external force dispersion medium members (600 and 601) are provided with indentations (600a, 600b, 601a, and 601b) corresponding to curved surfaces (400a and 401a) of the conical members (400 and 401), so that when the conical members (400 and 401) are inserted into the first and second bodies (100 and 250), the conical members (400 and 401) come in contact with the indentations (600a, 600b, 601a, and 601b) (by pressing and inserting the conical members into the first and second bodies), and subsequent contact forces (F11, F21, F31, and F41) are carried to the external force dispersion medium members (600 and 601), and to the reinforcing bar securing members (204, 205, 206, 207, 208, and 209) that are in contact with circumferences of the second surfaces of the external force dispersion medium members (600 and 601).
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▪ US Patent No. 9,333,626 (Kyoung jo Kim)
- 발명의 명칭: Apparatus for forming shot ball
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- 대표 독립항:
1. An apparatus for forming a shot ball that includes: a tank for receiving cut-off pieces finely cut from a steel wire and dropping the cut-off pieces through a conveying channel formed at a side; a forming chamber disposed under the tank, communicating with the conveying channel, and including a projection side disposed on a first side therein and an impeller rounding cut-off pieces by projecting the cut-off pieces dropping through the conveying channel to the projection side using high-speed airflow; a conveyer having a first side disposed at a lower portion of the forming chamber and a second side communicating with an upper portion of the tank to convey cut-off pieces, which drop after hitting against the projection side, to the tank; and a dust collector communicating with the forming chamber and collecting dust by absorbing dust and fragments produced in the forming chamber, the apparatus comprising a vibrator that is composed of: a supply channel formed at a second side of the tank and carrying cut-off pieces that are finished being machined; a cylindrical body communicating with the supply channel at an upper portion and receiving cut-off pieces that drop; a plurality of insertion spaces formed with regular intervals in a depth direction of the body; sorting units separably inserted in the insertion spaces, respectively, and sorting cut-off pieces in accordance with diameters thereof; discharge ports formed between the insertion spaces to discharge the sorted cut-off pieces; and a vibrating unit disposed at a side of the body and vibrating the sorting units.
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▪ US Design Patent No. D508,725 (Jung-Kyu Park)
- 디자인 명칭: Mat for training golf swing
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