Patent ID: 7331109

Claim:
An electric cutting device, comprising: a housing, with a power supply unit disposed in a lower portion of the housing so as to provide power to a motor; said motor, disposed in the housing and connected with a speed reduction gear set, wherein a transmission gear is connected with an output shaft of the speed reduction gear set and is engaged with a driving gear, and wherein a threaded rod is fixedly connected with the driving gear and a thread pattern of a front portion of the threaded rod is a mirror image to a thread pattern of a rear portion of the threaded rod; an activation button, extending out of the housing and connected with a control circuit; said control circuit, disposed in the housing and connected with the motor for activating the motor to rotate in a first direction or a second/reversed direction when receiving a signal from the activation button; a separation plate, with a front end disposed between the front portion and the rear portion of the threaded rod; a first assembly, threaded onto the rear portion of the threaded rod; a second assembly, threaded onto the front portion of the threaded rod; two supporting rods, pivotally connected with the first assembly; two connecting rods, with a bent portion provided near a front portion of either connecting rod, wherein a rear end of the either connecting rod is connected with a front end of a corresponding supporting rod and the bent portion is pivotally connected with the second assembly; and a cutting assembly, comprising a first cutting member and a second cutting member, wherein two blades of the cutting assembly extend out of the housing and a rear end of either cutting member is connected with a front end of a corresponding connecting rod.