초록 ▼

A battery operated grease gun includes a pump mechanism that employs a speed reducing and torque increasing planetary gearing transmission which rotates a final driver that is a part of the transmission, and a sliding yoke that is reciprocated by the final driver and is coupled to a plunger that dis

A battery operated grease gun includes a pump mechanism that employs a speed reducing and torque increasing planetary gearing transmission which rotates a final driver that is a part of the transmission, and a sliding yoke that is reciprocated by the final driver and is coupled to a plunger that dispenses the grease under pressure where the plunger is mounted to the yoke for relative movement therebetween.

대표청구항 ▼

[ What is claimed:] [11.] A pump mechanism for a liquid dispenser, the pump mechanism comprising:a housing having an interior annular collar;a plunger mounted in the housing for reciprocating movement of the plunger in the housing;a final driver having a cylindrical exterior surface, mounted in the

[ What is claimed:] [11.] A pump mechanism for a liquid dispenser, the pump mechanism comprising:a housing having an interior annular collar;a plunger mounted in the housing for reciprocating movement of the plunger in the housing;a final driver having a cylindrical exterior surface, mounted in the annular collar for rotation of the final driver in the annular collar, the cylindrical outer surface of the final driver being spaced from the interior annular collar by a bearing assembly, the final driver being operatively connected to the plunger to cause the plunger to reciprocate in the housing in response to rotation of the final driver; and,a motor in the housing operatively connected to the final driver to rotate the final driver.