Patent ID: 7032713
Filing Date: 2006-04-25
Classification: F16N

Abstract:
1. A battery operated grease gun comprising: a housing having a handle; a motor drive assembly mounted in the housing and comprising a gear housing mounted in the housing and having a top, a bottom, a top recess defined through the top of the gear housing, a bottom recess defined through the bottom of the gear housing, a countersunk through hole communicating with the top recess and the bottom recess and a bearing mounted in the countersunk through hole; a planetary gear assembly mounted in the bottom recess of the gear housing and coupled to the drive shaft of the motor to reduce angular speed and torque of the drive shaft; a pump assembly mounted in the housing and comprising a plunger attached to the sliding block and having an outside end attached to the sliding block and an inside end passing through and being held in the grease passage; and a cylindrical lubricant reservoir attached to the cylindrical skirt for lubricant will enter the grease passage.