Power Network Industry Co., Ltd. Patent applications |
Patent application number | Title | Published |
20140144657 | OPERATION MODE SWITCHING MECHANISM - An operation mode switching mechanism for use with a power tool disclosed in the present invention includes a torsion unit, a switching unit, a clutch member, a power output member and an output shaft, where the switching unit can be switched between three rotating positions and one impact position. When the switching unit is at one of the rotating positions (screw symbols), the output shaft is driven to rotate by a carrier plate; and when switching unit is switched to the impact position (impact symbol), the output shaft is pushed by the clutch member so as to disengage from the carrier plate and is driven by a planet plate. The clutch member also restricts the direction of motion of the output shaft in the impact position, so the output shaft moves back and forward to generate reciprocating impact output. | 05-29-2014 |
20110053728 | MULTI-GEAR MECHANISM FOR POWER TOOLS - A multi-gear mechanism includes first and second gear sets, an output set, multiple first planet gears pivotably connected between the first and second gear sets, a first gear ring having internal teeth and external teeth, multiple second planet gears cooperated with the internal teeth of the first gear ring, a second gear ring having internal teeth and side teeth, an operation gear ring and a motor gear. The motor gear extends through two central holes of the first and second gear sets, and the first and second planet gears are engaged with the motor gear. The operation gear ring is connected with the second gear ring which drives the operation gear ring to move axially. The motor gear drives the output set at low speed, constant speed or high speed when the operation gear ring and the second gear ring are operated to engage with different gears. | 03-03-2011 |
20100034617 | LOCKING DEVICE - A locking device includes an outer ring and a locking disk is located on a first side of the outer ring and has a shaft which extends through the outer ring. An annular ring, a needle roller bearing, a first washer, a second washer, and a transmission disk are mounted to the shaft, respectively. The first washer is co-rotated with the shaft and the second washer is co-rotated with the outer ring. The transmission disk is freely mounted to the shaft by a clamp and includes first recesses and second recesses which are shallower than the first recesses. Balls are located between the first and second washers and movably engaged with the first recesses or the second recesses so as to control the movement of the transmission disk to be engaged with a rotatable part such as a grinding wheel of a sand wheel machine. | 02-11-2010 |