Patent ID: 7004357
Filing Date: 2006-02-28
Classification: B25F,F16N,G01F,Y10T

Abstract:
1. A grease gun, comprising: a housing defining an interior chamber and having at least one air inlet aperture and at least one air outlet aperture for placing the interior chamber in communication with the atmosphere, the housing including; an electric motor disposed in the handle portion of the housing, the motor comprising: a wall integral with the handle portion of the housing and extending inwardly into the interior chamber, the wall engaging the body of the motor housing between the first end wall and the openings in the body so that the interior chamber is divided into a first air intake portion wherein the openings in the first end wall are in fluid communication with the atmosphere through the at least one air inlet aperture and a second exhaust air portion wherein the openings in the body and the second end wall are in fluid communication with the atmosphere through the at least one air outlet aperture, the wall providing a barrier to minimize air flow between the intake air portion of the interior chamber and the exhaust air portion; a grease supply cylinder sealingly secured to the head portion so that the bore is in fluid communication with the grease in the supply cylinder, the supply cylinder extending laterally from the head portion such that the longitudinal axis of the supply cylinder is substantially parallel to the longitudinal axis of the handle; and a battery received within the handle portion for energizing the motor, wherein the fan induces air flow from the atmosphere through the at least one air inlet aperture in the handle portion and into the motor housing through the openings in the first end wall and from the exhaust air portion of the interior chamber into the motor housing through the openings in the second end wall and discharges the air out of the openings in the body.