Abstract: A mechanism and a method for framing a low-distortion flexible dielectric substrate during subsequent flex circuit processing. The processing method comprising the following steps: making a flexible dielectric substrate having an outer periphery; joining a continuous portion of the flexible dielectric substrate near the outer periphery to a rigid open frame, the flexible dielectric substrate being in a state other than a state of substantially uniform tension as a result of the joinder; causing the joined flexible dielectric substrate to undergo a change to the state of substantially uniform tension; and printing an electrical conductor on the flexible dielectric substrate while the flexible dielectric substrate is joined to the frame and in the state of substantially uniform tension. The frame is in the shape of a polygon (e.g., a rectangle) with rounded vertices.

Abstract: A machine comprises: a rotor comprising (a) axially extending coils, each coil extending into an endwinding region, (b) a plurality of cavities between the coils in the endwinding region, and (c) a plurality of spacers situated between the coils. Ventilation grooves having an inlet and an outlet are defined in the rotor with at least some of the coils including at least one of the ventilation grooves. The ventilation grooves provide at least one path for gas flow from at least one first cavity to at least one of (i) a second cavity or (ii) a different portion of the first cavity.

Abstract: A mechanism and a method for framing a low-distortion flexible dielectric substrate during subsequent flex circuit processing. The processing method comprising the following steps: making a flexible dielectric substrate having an outer periphery; joining a continuous portion of the flexible dielectric substrate near the outer periphery to a rigid open frame, the flexible dielectric substrate being in a state other than a state of substantially uniform tension as a result of the joinder; causing the joined flexible dielectric substrate to undergo a change to the state of substantially uniform tension; and printing an electrical conductor on the flexible dielectric substrate while the flexible dielectric substrate is joined to the frame and in the state of substantially uniform tension. The frame is in the shape of a polygon (e.g., a rectangle) with rounded vertices.