Sta-rite Industries Inc.

Giorgio Domenichini

Cleo D Mathis

Robert A Miller

Francesco Bottoni

Cesare Bolboni

A high-efficiency motor/pump system ( ) for jetted baths/spas includes a pump assembly ( ) removably secured to a motor assembly ( ). The motor assembly ( ) includes a motor ( ) having a conventional laminated stator ( ), a front housing ( ) at the forward end of the motor ( ), a rear housing ( ) at the back end of the motor ( ), and a ventilation plate ( ) at the end of the rear housing ( ). An armature-mounted internal fan ( ) draws ambient air through openings in a ventilation plate ( ) and forces the air through annular channels ( ) in the rear housing ( ) to effect cooling of the motor ( ). The motor ( ) is of the permanent split-capacitor type to eliminate the centrifugal switch commonly used in capacitor-start induction motors to thereby improve reliability. Additionally, telescoping structures on the forward end of the motor assembly and the rearward end of the pump assembly facilitate self-aligning assembly of the components.

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Ferrara, Italy

Giorgio Domenichini