Patent ID: 8359719
Filing Date: 2013-01-29
Classification: A01K,F16B,Y10T

Abstract:
1. A snap ring for coupling a purse line to a purse seine, comprising: a frame having a first end connected to the purse seine and a second end through which the purse line passes; a plurality of rollers rotatably provided in the frame at positions at which the purse line is brought into contact with the frame; a frame opening formed in one side part of opposite side parts of the frame to open the frame; and a locking unit coupled to the frame to openably close the frame opening, wherein the locking unit comprises: a first cylinder coupled at a first end thereof to a part of the frame by a hinge, the part of the frame corresponding to a first end of the frame opening, the first cylinder being disposed at a second end thereof in the frame at a position corresponding to a second end of the frame opening, so that the frame opening is opened or closed by the locking unit depending on a rotation of the first cylinder around the hinge, wherein one roller selected from the plurality of rollers is provided in at least one side part of the opposite side parts of the frame, and another roller is disposed to span the opposite side parts of the frame, wherein a mounting notch is formed in the frame to receive the one roller selected from the plurality of rollers therein, wherein the plurality of rollers comprises: a first roller and a second roller respectively provided in the opposite side parts of the frame; and a third roller provided to span the opposite side parts of the frame, the third roller being disposed such that both ends thereof respectively face the first roller and the second roller, wherein in the frame, the first roller is provided in a first mounting notch, and the second roller is provided in a second mounting notch, and the first, second and third rollers respectively have first, second and third shafts functioning as rotating axes for the corresponding rollers, wherein first ends of the first and second shafts are inserted into corresponding ends of the first and second mounting notches, and second ends of the first and second shafts respectively engage with both ends of the third shaft, wherein an insert depression is formed in the end of the first mounting notch so that the first end of the first shaft is disposed in the insert depression, a hollow space is formed in the insert depression to allow the first end of the first shaft to move in a longitudinal direction thereof, and a cut is formed in the third shaft so that the second end of the first shaft is fitted into the cut, wherein when the first shaft is moved into the hollow space of the insert depression, the second end of the first shaft is removed from the cut of the third shaft, wherein a mounting opening is formed in the insert depression of the first mounting notch to allow the first end of the first shaft to be removed from the insert depression therethrough, the mounting opening being openably closed by a stopper, wherein the stopper is held in the mounting opening by a fastening member which passes through the frame, the first shaft and the mounting opening in order.