1
Sun Kwang Joo: Paddy land levelling device capable of levelling the land after rotor work by forming rotor on the back surface of auxiliary land levelling device. Sun Kwang Joo, October 13, 2004: KR1020030021089 (2 worldwide citation)

PURPOSE: A paddy land levelling device is provided to level the land after a rotor work by forming a rotor on the back surface of auxiliary land levelling device formed at both sides of the paddy land levelling device. CONSTITUTION: The device comprises: a horizontal adjusting portion having a conne ...


2
Sun Kwang Joo: Paddy land levelling device capable of levelling the land after a rotor work by forming rotor on the back surface of auxiliary land levelling device. Sun Kwang Joo, October 13, 2004: KR1020030021090

PURPOSE: A paddy land levelling device is provided to level the land after a rotor work by forming a rotor on the back surface of auxiliary land levelling devices formed at both sides of the paddy land levelling device. CONSTITUTION: The device comprises: a horizontal adjusting portion having a conn ...


3
Sun Kwang Joo: Arrangement for fixing rotavator blades. Sun Kwang Joo, July 30, 2004: KR1020030004651

PURPOSE: An arrangement for fixing rotavator blades is provided to improve the fixing force of blades and to bear generated load during rotating them by inclining the hilling blades at defined angle to the rotating direction and by surface-contacting them with the fixing flange, and to improve the p ...


4
Sun Kwang Joo: Harrow for tractor. Sun Kwang Joo, July 30, 2004: KR1020030004640

PURPOSE: A harrow for tractor is provided to prevent the wrong operation and the accident by folded-staking auxiliary harrow plate in a linked manner with hydraulic cylinder and in an inclined manner to tractor, and to smoothly regulate the fine angle of harrow. CONSTITUTION: The harrow for tractor ...


5
Sun Kwang Joo: Rotavator. Sun Kwang Joo, May 31, 1999: KR1019970046009

PURPOSE: A rotavator is provided to eliminate the length limitation of the rotavator by allowing the rotavator to be folded using a hydraulic cylinder, thereby being improved the working efficiency of the rotavator. CONSTITUTION: A frame(2) having a heeler(7), a heeler cover(9), a driving shaft(5) i ...