Patent ID: 7118355
Filing Date: 2006-10-10
Classification: F04D

Abstract:
1. In an electric motor driven blower assembly having a motor shaft mounted blower positioned in a surrounding blower housing having a central axis and an open side closed by the attachment of a separate motor holding cover to said blower housing at a generally planar peripheral rim, a cooling duct for the motor that forms an integral part of both the blower housing and the motor cover, comprising, a cooling tube integrally formed with the blower housing, and extending generally parallel to the central axis, axially beyond the peripheral rim to an upper end, an open trough integrally formed with said motor cover and extending radially past said peripheral rim to an outer end, an elastomer gasket located on and surrounding said peripheral rim and having a projection overlaying the outer end of said open trough, with a window sized to tightly receive the upper end of said cooling tube, whereby, when said motor cover is attached with the gasket window and cooling tube in circumferential registration, the end of the cooling tube is inserted closely through the gasket projection window, thereby completing a cooling air duct from the blower housing into the motor cover.