Abstract: A blower has a blower housing of clamshell construction, including two housing members having a scroll back wall molded with radial draft, an impeller and a motor within the housing, and a static tap connected to the housing. The impeller has a backplate with a backplate back surface region of substantially the same radially converging shape as that of a front surface region of the scroll back wall formed by the radial draft, providing a substantially uniform axial gap between the backplate back surface region and the scroll back wall. The impeller has a ring connected by a skirt to the back plate to define a stepped area behind the ring. The impeller includes impeller blades extending forwardly from the impeller backplate and the ring and back fins extending rearwardly from the ring. The blower has a scroll width of about twice an impeller exhaust width.

Abstract: A blower has a blower housing of clamshell construction, including two housing members having a scroll back wall molded with radial draft, an impeller and a motor within the housing, and a static tap connected to the housing. The impeller has a backplate with a backplate back surface region of substantially the same radially converging shape as that of a front surface region of the scroll back wall formed by the radial draft, providing a substantially uniform axial gap between the backplate back surface region and the scroll back wall. The impeller has a ring connected by a skirt to the back plate to define a stepped area behind the ring. The impeller includes impeller blades extending forwardly from the impeller backplate and the ring and back fins extending rearwardly from the ring. The blower has a scroll width of about twice an impeller exhaust width.

Abstract: A blower has a blower housing of clamshell construction, including two housing members having a scroll back wall molded with radial draft, an impeller and a motor within the housing, and a static tap connected to the housing. The impeller has a backplate with a backplate back surface region of substantially the same radially converging shape as that of a front surface region of the scroll back wall formed by the radial draft, providing a substantially uniform axial gap between the backplate back surface region and the scroll back wall. The impeller has a ring connected by a skirt to the back plate to define a stepped area behind the ring. The impeller includes impeller blades extending forwardly from the impeller backplate and the ring and back fins extending rearwardly from the ring. The blower has a scroll width of about twice an impeller exhaust width.

Abstract: A blower has a blower housing of clamshell construction, including two housing members having a scroll back wall molded with radial draft, an impeller and a motor within the housing, and a static tap connected to the housing. The impeller has a backplate with a backplate back surface region of substantially the same radially converging shape as that of a front surface region of the scroll back wall formed by the radial draft, providing a substantially uniform axial gap between the backplate back surface region and the scroll back wall. The impeller has a ring connected by a skirt to the back plate to define a stepped area behind the ring. The impeller includes impeller blades extending forwardly from the impeller backplate and the ring and back fins extending rearwardly from the ring. The blower has a scroll width of about twice an impeller exhaust width.

Abstract: A stator assembly for use in an axial flux electric motor includes a plurality of circumferentially-spaced tooth assemblies that each includes a tooth portion and a base portion. The stator assembly also includes a plurality of circumferentially-spaced bridge members that are each configured to engage a pair of circumferentially adjacent base portions.

Abstract: A stator assembly for use in an axial flux electric motor includes a plurality of circumferentially-spaced tooth assemblies that each includes a tooth portion and a base portion. The stator assembly also includes a plurality of circumferentially-spaced bridge members that are each configured to engage a pair of circumferentially adjacent base portions.

Abstract: A non-dilution air water heater blower for use in expelling exhaust gases from a water heater. The water heater blower includes a one piece blower housing defined by an outer wall having an upper section and a lower section. An inlet plate is positioned between the upper section and the lower section of the blower housing to define an upper chamber and a lower chamber. The lower chamber of the blower housing surrounds the exhaust flue from the water heater. A blower motor is attached to the outside surface of the blower housing. A rotating impeller coupled to the blower motor and positioned in the upper chamber draws exhaust gases from the water heater into the lower chamber through an inlet aperture formed in the inlet plate and out of an exhaust outlet formed in the upper chamber.